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| Meta Title | What Is the Tax Cuts and Jobs Act (TCJA)? |
| Meta Description | Learn what the Tax Cuts and Jobs Act is, when it was passed, the major tax changes it introduced, and how it continues to affect individuals and businesses. |
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| Boilerpipe Text | Key Takeaways
The Tax Cuts and Jobs Act (TCJA) was the most significant tax code overhaul in three decades, creating a single flat corporate tax rate of 21%.
Many tax benefits that helped individuals and families were initially set to expire in 2025.
The One Big Beautiful Bill Act (OBBBA, 2025) permanently establishes many individual provisions, such as lower tax brackets, a bigger standard deduction, and a Qualified Business Income (QBI) deduction.
OBBBA also raises the SALT deduction cap, boosts the Child Tax Credit, and permanently enhances the standard deduction.
New provisions include special reliefs—like deductions for tips, overtime pay, and U.S. auto-loan interest—while maintaining TCJA’s broad corporate reforms.
The Tax Cuts and Jobs Act (TCJA) was a major overhaul of the tax code, signed into law by President Donald Trump in his first term on Jan. 1, 2018. The Senate passed it on Dec. 2, 2017, by a party-line vote of 51 to 49.
1
The House passed its version by a vote of 224 to 201. No House Democrats supported the bill, and 12 Republicans voted against it.
2
The reform impacted
taxpayers
and
business owners
, particularly through tax cuts. Many of the benefits for individuals were set to expire in 2025.
3
However, passage of the "One Big Beautiful Bill Act" legislative package in July 2025 extended or made many of its provisions permanent.
Effects on Individuals
TCJA impacted taxpayers based on their income level, filing status, and deductions. It permanently removed the mandate requiring people to buy health insurance, a key provision of the Affordable Care Act (ACA).
3
The highest earners were expected to benefit most from the law, while the lowest and middle earners were expected to pay more in taxes if the individual tax provisions were extended past 2025.
4
Here are the key provisions affecting individuals:
5
Income tax rates
: The law kept the seven individual income tax brackets. The top rate fell from 39.6% to 37%, while the 33% bracket dropped to 32%, the 28% bracket to 24%, the 25% bracket to 22%, and the 15% bracket to 12%. The lowest bracket remained at 10%, and the 35% was unchanged.
Standard deduction
: TCJA raised the standard deduction for all filers.
Personal exemption
:
The law suspended the personal exemption through 2025.
Health coverage mandate
: TCJA ended the individual mandate, a provision of the ACA that penalized people who didn't get
health insurance
coverage.
Child tax credit
: The law raised the child tax credit and created a nonrefundable credit for non-child dependents. It can only be claimed if the taxpayer provides the child's Social Security number (SSN), who must be younger than 17. These changes were set to expire in 2025.
Estate tax
: The law temporarily raised theÂ
estate tax
 exemption. This change is expected to be reversed after 2025.
Student loans
: It lets 529 plans fund K through 12 private school tuition—up to $10,000 per year, per child. Under the SECURE Act of 2019, the benefits of 529 plans were expanded, allowing plan holders to withdraw a maximum lifetime amount of $10,000 per beneficiary penalty-free to pay down qualified
student debt
.
6
Retirement savings
: The law repealed the ability to retroactively designate a
Roth
contribution as a traditional
IRA
or vice-versa. The SECURE Act lets people contribute to IRAs after age 70½.
HSAs
weren't affected by the law.
6
Alternative Minimum Tax (AMT)
: The law temporarily raised the exemption amount and exemption phase-out threshold for the AMT, which was intended to curb tax avoidance among high earners.
Mortgage interest
: TCJA limits the
mortgage
interest deduction for married couples filing jointly to $750,000. The change was set to expire after 2025, but was extended as part of the OBBBA.
7
Pease limitation
: The law repealed the Pease limitation on itemized deductions and gradually reduced their value when adjusted gross income exceeds a certain threshold.
8
Miscellaneous itemized deductions
: The suspended miscellaneous itemized deductions include deductions for moving expenses, except for active-duty military personnel, and union dues through 2025.
Important
The law cut
corporate tax rates
permanently and individual tax rates temporarily, except for those extended or made permanent by the OBBBA.
7
5
State and Local Tax (SALT)
The law capped the tax
deduction for state and local taxes
at $10,000 through the 2025 tax year, but this generally affects only taxpayers who live in states with notably high tax rates and who itemize their deductions rather than claim the standard deduction.
5
The cap was raised to $40,000 for tax years 2025 to 2028 under the OBBA, but will revert to $10,000 after 2028.
7
The deduction covers property and income taxes or sales taxes, but not both. Taxpayers must choose between deducting one type of tax or the other. The TCJA further limited this deduction for those who are married but file separate returns.
5
Businesses and the TCJA
Here are the key provisions affecting businesses:
5
Corporate Tax Rate
: The law created a single corporate tax rate of 21% and repealed the corporate AMT. These provisions do not expire. Supporters argued that lowering the corporate tax rate would reduce the need for companies to move their taxes to low- or no-tax countries, often through mergers with foreign firms.
Immediate Expensing
: TCJA allows full expensing of short-lived capital investments rather than requiring them to be depreciated over time. The section 179 deduction cap doubles to $1 million, and the phaseout begins after $2.5 million of equipment spending, up from the previous $2 million.
Pass-Through Income
: Owners of pass-through businesses, which include sole proprietorships, partnerships, and S corporations, gained a 20% deduction for pass-through income. To discourage high earners from recharacterizing regular wages as pass-through income, the deduction is capped at 50% of wage income or 25% of wage income plus 2.5% of the cost of qualifying property.
Interest
: The net interest deduction is capped at 30% of earnings before interest and taxes (EBIT).
Cash Accounting
: Businesses with up to $25 million in average annual gross receipts over the preceding three years can use
cash accounting
—up from the old tax code's $5 million.
Net Operating Losses
: The law scrapped net operating loss (NOL) carrybacks and caps carryforwards at 90% of taxable income, falling to 80%.
Section 199
: The law eliminated the section 199 (domestic production activities) deduction for businesses that engage in domestic manufacturing and other production work.
Foreign Earnings
: The law introduced a territorial tax system under which only domestic earnings are subject to tax. Companies with over $500 million in annual gross receipts are subject to the base erosion anti-abuse tax, designed to counteract base erosion and profit shifting, a tax-planning strategy that involves moving taxable profits from one country to another with low or no taxes. BEAT is calculated by subtracting a company's regular corporate tax liability from 10% of its taxable income, ignoring base-eroding payments.
9
Intangible Property
TCJA altered the treatment of intangible property held abroad, such as patents, trademarks, and copyrights.
5
For example, Nike's (
NKE
) Swoosh trademark is house in an untaxed Dutch subsidiary.
10
Â
When the foreign tax rate on foreign earnings above a 10% standard rate of return is below 13.125%, the law taxes these excess returns at 21%, after a 50% deduction and a deduction worth 37.5% of FDII. This excess income, which the law assumes to be derived from intangible assets, is called global intangible low-taxed income (GILTI). Credits can offset up to 80% of GILTI liability.
Foreign-derived intangible income is from the export of intangibles held domestically, which is taxed at a 13.125% effective rate, rising to 16.406% after 2025.
5
Projected Economic Growth
Former Treasury Secretary Steven Mnuchin claimed that the Republican tax plan would spur sufficient economic growth to pay for itself and more.
11
On Dec. 11, 2017, the Treasury released a one-page analysis claiming that the law would increase revenues by $1.8 trillion over 10 years.
12
The
Federal Reserve
projected growth of 2.5% in 2018, 2.1% in 2019, 2.0% in 2020, and 1.8% over the longer run.
12
Real GDP data for the years after the TCJA showed the following growth rates:
13
0.6% in 2018
2.8% in 2019
4.6% in 2020
7.0% in 2021
2.8% in 2022
3.4% in 2023
1.9% in 2024
Who Benefited From TCJA?
The TCJA cut the corporate tax rate to benefit shareholders, who tend to be higher earners. It only originally cut individuals' taxes for a limited period, though the OBBA extended or made permanent many of the cuts. It scaled back the AMT and estate tax and reduced the taxes levied on pass-through income. It did not close the
carried interest
loophole, which benefited professional investors.
The Tax Policy Center originally estimated that the majority of taxpayers (53.4%) would face a tax increase when the individual tax cuts were set to expire after 2025, while 69.7% of those in the middle quintile (40th to 60th percentile) were expected to pay more, compared to just 8% of the highest-earning 0.1%.
14
Change in after-tax income by income percentile
Updates Under the One Big Beautiful Bill Act (2025)
The OBBBA, signed into law on July 4, 2025, changes the outlook for taxpayers by making permanent many TCJA provisions as well as adding several new benefits:
7
Permanent lower individual tax rates:
Keeps the seven-bracket system (10%, 12%, 22%, 24%, 32%, 35%, 37%) beyond 2025, adjusted for inflation.
Standard deduction increase and permanence:
$15,750 for single filers and $31,500 for married couples filing jointly in 2025; indexed for inflation.
Child Tax Credit raised and permanent:
Increased to $2,200 per child, with inflation adjustments and stronger refundability.
SALT deduction cap raised:
From $10,000 to $40,000 (married filing jointly) for 2025 to 2028, phasing out for high earners; scheduled to revert afterward.
Qualified Business Income (QBI) deduction:
Made permanent, providing certainty for small business owners and pass-through entities.
New targeted deductions:
No tax on tips
(up to an annual threshold).
No tax on the overtime pay portion of wages.
Auto-loan interest deduction for qualifying U.S.-assembled vehicles.
U.S. Tax Law Comparison: Pre-TCJA vs. TCJA vs. OBBBA (2025)
Provision
Pre-TCJA (2017 rules)
TCJA (2018–2024)
OBBBA (2025– )
Corporate Tax Rate
Up to 35%
Flat 21% (permanent)
21% (permanent, unchanged)
Individual Tax Brackets
7 brackets, top rate 39.6%
7 brackets, top rate 37% (set to expire 2025)
7 brackets (10%, 12%, 22%, 24%, 32%, 35%, 37%) made permanent; indexed
Standard Deduction
$6,350 (single), $12,700 (married joint)
~$12,000 (single), ~$24,000 (joint), indexed (expiring 2025)
$15,750 (single), $31,500 (joint) in 2025, indexed; permanent
Personal Exemptions
$4,050 per person
Eliminated
Remains eliminated
Child Tax Credit
$1,000 per child (partially refundable)
$2,000 per child (<17), phase-outs; scheduled to drop post-2025
$2,200 per child, indexed for inflation, permanent; refundable portion expanded
State & Local Tax (SALT) Deduction
Unlimited
Capped at $10,000 (through 2025)
Raised to $40,000 (2025–2028, phase-outs for high earners), reverts to $10,000 afterward
Mortgage Interest Deduction
Interest on up to $1M mortgage
Limited to $750k (through 2025)
Continues at $750k (no major change)
Pass-Through Business Deduction (QBI)
None
Up to 20% deduction on qualified income (expiring 2025)
Made permanent
Estate Tax Exemption
~$5.49M per person
Doubled (~$11.2M per person, expiring 2025)
Permanently extended at higher level (indexed for inflation)
Health Insurance Mandate (ACA)
Penalty for no coverage
Penalty reduced to $0 (effective 2019)
Remains $0
Depreciation / Expensing
Section 179, more limited
100% bonus depreciation (phased down 2023–2026)
Made permanent under OBBBA
New Provisions (not in TCJA)
N/A
N/A
Deductions for reported tips (limited), overtime pay, auto-loan interest (U.S. vehicles)
The Bottom Line
The Tax Cuts and Jobs Act reshaped the U.S. tax code in 2018, and many of its temporary individual provisions were due to expire at the end of 2025. With the passage of the One Big Beautiful Bill Act on July 4, 2025, however, many of those provisions are now permanent. Taxpayers can expect continued lower rates, bigger deductions, and new reliefs, though some benefits (like the expanded SALT cap) will remain temporary or revert to previous levels after 2028. |
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Table of Contents
Expand
Table of Contents
- [Effects on Individuals](https://www.investopedia.com/taxes/trumps-tax-reform-plan-explained/#toc-effects-on-individuals)
- [State and Local Tax (SALT)](https://www.investopedia.com/taxes/trumps-tax-reform-plan-explained/#toc-state-and-local-tax-salt)
- [Businesses and the TCJA](https://www.investopedia.com/taxes/trumps-tax-reform-plan-explained/#toc-businesses-and-the-tcja)
- [Intangible Property](https://www.investopedia.com/taxes/trumps-tax-reform-plan-explained/#toc-intangible-property)
- [Projected Economic Growth](https://www.investopedia.com/taxes/trumps-tax-reform-plan-explained/#toc-projected-economic-growth)
- [Who Benefited From TCJA?](https://www.investopedia.com/taxes/trumps-tax-reform-plan-explained/#toc-who-benefited-from-tcja)
- [Updates Under the One Big Beautiful Bill Act (2025)](https://www.investopedia.com/taxes/trumps-tax-reform-plan-explained/#toc-updates-under-the-one-big-beautiful-bill-act-2025)
- [The Bottom Line](https://www.investopedia.com/taxes/trumps-tax-reform-plan-explained/#toc-the-bottom-line)
# What Is the Tax Cuts and Jobs Act (TCJA)?
Trump's Tax Reform Plan Explained (Updated for 2025)
By
[David Floyd](https://www.investopedia.com/contributors/54375/)
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Updated December 11, 2025
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The Tax Cuts and Job Act prompted a significant overhaul of the tax code, affecting millions of Americans.
Nick White and Fiona Jackson-Downes / Getty Images
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### Key Takeaways
- The Tax Cuts and Jobs Act (TCJA) was the most significant tax code overhaul in three decades, creating a single flat corporate tax rate of 21%.
- Many tax benefits that helped individuals and families were initially set to expire in 2025.
- The One Big Beautiful Bill Act (OBBBA, 2025) permanently establishes many individual provisions, such as lower tax brackets, a bigger standard deduction, and a Qualified Business Income (QBI) deduction.
- OBBBA also raises the SALT deduction cap, boosts the Child Tax Credit, and permanently enhances the standard deduction.
- New provisions include special reliefs—like deductions for tips, overtime pay, and U.S. auto-loan interest—while maintaining TCJA’s broad corporate reforms.
The Tax Cuts and Jobs Act (TCJA) was a major overhaul of the tax code, signed into law by President Donald Trump in his first term on Jan. 1, 2018. The Senate passed it on Dec. 2, 2017, by a party-line vote of 51 to 49.1 The House passed its version by a vote of 224 to 201. No House Democrats supported the bill, and 12 Republicans voted against it.2
The reform impacted [taxpayers](https://www.investopedia.com/the-best-tax-software-8780098) and [business owners](https://www.investopedia.com/the-best-tax-software-for-small-business-8780637), particularly through tax cuts. Many of the benefits for individuals were set to expire in 2025.3 However, passage of the "One Big Beautiful Bill Act" legislative package in July 2025 extended or made many of its provisions permanent.
## Effects on Individuals
TCJA impacted taxpayers based on their income level, filing status, and deductions. It permanently removed the mandate requiring people to buy health insurance, a key provision of the Affordable Care Act (ACA).3 The highest earners were expected to benefit most from the law, while the lowest and middle earners were expected to pay more in taxes if the individual tax provisions were extended past 2025.4
Here are the key provisions affecting individuals:5
- **Income tax rates**: The law kept the seven individual income tax brackets. The top rate fell from 39.6% to 37%, while the 33% bracket dropped to 32%, the 28% bracket to 24%, the 25% bracket to 22%, and the 15% bracket to 12%. The lowest bracket remained at 10%, and the 35% was unchanged.
- **Standard deduction**: TCJA raised the standard deduction for all filers.
- **Personal exemption**:The law suspended the personal exemption through 2025.
- **Health coverage mandate**: TCJA ended the individual mandate, a provision of the ACA that penalized people who didn't get [health insurance](https://www.investopedia.com/the-best-health-insurance-companies-8762191) coverage.
- **Child tax credit**: The law raised the child tax credit and created a nonrefundable credit for non-child dependents. It can only be claimed if the taxpayer provides the child's Social Security number (SSN), who must be younger than 17. These changes were set to expire in 2025.
- **Estate tax**: The law temporarily raised the [estate tax](https://www.investopedia.com/terms/e/estatetax.asp) exemption. This change is expected to be reversed after 2025.
- **Student loans**: It lets 529 plans fund K through 12 private school tuition—up to \$10,000 per year, per child. Under the SECURE Act of 2019, the benefits of 529 plans were expanded, allowing plan holders to withdraw a maximum lifetime amount of \$10,000 per beneficiary penalty-free to pay down qualified [student debt](https://www.investopedia.com/terms/s/student-debt.asp).6
- **Retirement savings**: The law repealed the ability to retroactively designate a [Roth](https://www.investopedia.com/the-best-roth-ira-brokers-8764132) contribution as a traditional [IRA](https://www.investopedia.com/the-best-ira-brokers-8764115) or vice-versa. The SECURE Act lets people contribute to IRAs after age 70½. [HSAs](https://www.investopedia.com/the-best-health-savings-account-providers-11687235) weren't affected by the law.6
- **Alternative Minimum Tax (AMT)**: The law temporarily raised the exemption amount and exemption phase-out threshold for the AMT, which was intended to curb tax avoidance among high earners.
- **Mortgage interest**: TCJA limits the [mortgage](https://www.investopedia.com/the-best-mortgage-lenders-11714101) interest deduction for married couples filing jointly to \$750,000. The change was set to expire after 2025, but was extended as part of the OBBBA.7
- **Pease limitation**: The law repealed the Pease limitation on itemized deductions and gradually reduced their value when adjusted gross income exceeds a certain threshold.8
- **Miscellaneous itemized deductions**: The suspended miscellaneous itemized deductions include deductions for moving expenses, except for active-duty military personnel, and union dues through 2025.
### Important
The law cut [corporate tax rates](https://www.investopedia.com/terms/c/corporatetax.asp) permanently and individual tax rates temporarily, except for those extended or made permanent by the OBBBA.75
## State and Local Tax (SALT)
The law capped the tax [deduction for state and local taxes](https://www.investopedia.com/trumps-tax-bill-makes-a-big-change-that-could-impact-high-earners-especially-those-in-new-york-and-california-11779390) at \$10,000 through the 2025 tax year, but this generally affects only taxpayers who live in states with notably high tax rates and who itemize their deductions rather than claim the standard deduction.5 The cap was raised to \$40,000 for tax years 2025 to 2028 under the OBBA, but will revert to \$10,000 after 2028.7
The deduction covers property and income taxes or sales taxes, but not both. Taxpayers must choose between deducting one type of tax or the other. The TCJA further limited this deduction for those who are married but file separate returns.5
## Businesses and the TCJA
Here are the key provisions affecting businesses:5
- **Corporate Tax Rate**: The law created a single corporate tax rate of 21% and repealed the corporate AMT. These provisions do not expire. Supporters argued that lowering the corporate tax rate would reduce the need for companies to move their taxes to low- or no-tax countries, often through mergers with foreign firms.
- **Immediate Expensing**: TCJA allows full expensing of short-lived capital investments rather than requiring them to be depreciated over time. The section 179 deduction cap doubles to \$1 million, and the phaseout begins after \$2.5 million of equipment spending, up from the previous \$2 million.
- **Pass-Through Income**: Owners of pass-through businesses, which include sole proprietorships, partnerships, and S corporations, gained a 20% deduction for pass-through income. To discourage high earners from recharacterizing regular wages as pass-through income, the deduction is capped at 50% of wage income or 25% of wage income plus 2.5% of the cost of qualifying property.
- **Interest**: The net interest deduction is capped at 30% of earnings before interest and taxes (EBIT).
- **Cash Accounting**: Businesses with up to \$25 million in average annual gross receipts over the preceding three years can use [cash accounting](https://www.investopedia.com/terms/c/cashaccounting.asp)—up from the old tax code's \$5 million.
- **Net Operating Losses**: The law scrapped net operating loss (NOL) carrybacks and caps carryforwards at 90% of taxable income, falling to 80%.
- **Section 199**: The law eliminated the section 199 (domestic production activities) deduction for businesses that engage in domestic manufacturing and other production work.
- **Foreign Earnings**: The law introduced a territorial tax system under which only domestic earnings are subject to tax. Companies with over \$500 million in annual gross receipts are subject to the base erosion anti-abuse tax, designed to counteract base erosion and profit shifting, a tax-planning strategy that involves moving taxable profits from one country to another with low or no taxes. BEAT is calculated by subtracting a company's regular corporate tax liability from 10% of its taxable income, ignoring base-eroding payments.9
## Intangible Property
TCJA altered the treatment of intangible property held abroad, such as patents, trademarks, and copyrights.5 For example, Nike's ([NKE](https://www.investopedia.com/markets/quote?tvwidgetsymbol=nke)) Swoosh trademark is house in an untaxed Dutch subsidiary.10
When the foreign tax rate on foreign earnings above a 10% standard rate of return is below 13.125%, the law taxes these excess returns at 21%, after a 50% deduction and a deduction worth 37.5% of FDII. This excess income, which the law assumes to be derived from intangible assets, is called global intangible low-taxed income (GILTI). Credits can offset up to 80% of GILTI liability.
Foreign-derived intangible income is from the export of intangibles held domestically, which is taxed at a 13.125% effective rate, rising to 16.406% after 2025.5
## Projected Economic Growth
Former Treasury Secretary Steven Mnuchin claimed that the Republican tax plan would spur sufficient economic growth to pay for itself and more.11 On Dec. 11, 2017, the Treasury released a one-page analysis claiming that the law would increase revenues by \$1.8 trillion over 10 years.12
The [Federal Reserve](https://www.investopedia.com/terms/f/federalreservebank.asp) projected growth of 2.5% in 2018, 2.1% in 2019, 2.0% in 2020, and 1.8% over the longer run.12 Real GDP data for the years after the TCJA showed the following growth rates:13
- 0\.6% in 2018
- 2\.8% in 2019
- 4\.6% in 2020
- 7\.0% in 2021
- 2\.8% in 2022
- 3\.4% in 2023
- 1\.9% in 2024
## Who Benefited From TCJA?
The TCJA cut the corporate tax rate to benefit shareholders, who tend to be higher earners. It only originally cut individuals' taxes for a limited period, though the OBBA extended or made permanent many of the cuts. It scaled back the AMT and estate tax and reduced the taxes levied on pass-through income. It did not close the [carried interest](https://www.investopedia.com/terms/c/carriedinterest.asp) loophole, which benefited professional investors.
The Tax Policy Center originally estimated that the majority of taxpayers (53.4%) would face a tax increase when the individual tax cuts were set to expire after 2025, while 69.7% of those in the middle quintile (40th to 60th percentile) were expected to pay more, compared to just 8% of the highest-earning 0.1%.14
Change in after-tax income by income percentile
## Updates Under the One Big Beautiful Bill Act (2025)
The OBBBA, signed into law on July 4, 2025, changes the outlook for taxpayers by making permanent many TCJA provisions as well as adding several new benefits:7
- **Permanent lower individual tax rates:** Keeps the seven-bracket system (10%, 12%, 22%, 24%, 32%, 35%, 37%) beyond 2025, adjusted for inflation.
- **Standard deduction increase and permanence:** \$15,750 for single filers and \$31,500 for married couples filing jointly in 2025; indexed for inflation.
- **Child Tax Credit raised and permanent:** Increased to \$2,200 per child, with inflation adjustments and stronger refundability.
- **SALT deduction cap raised:** From \$10,000 to \$40,000 (married filing jointly) for 2025 to 2028, phasing out for high earners; scheduled to revert afterward.
- **Qualified Business Income (QBI) deduction:** Made permanent, providing certainty for small business owners and pass-through entities.
- **New targeted deductions:**
- [No tax on tips](https://www.investopedia.com/how-the-new-tax-bill-could-boost-your-refund-next-year-11830394) (up to an annual threshold).
- No tax on the overtime pay portion of wages.
- Auto-loan interest deduction for qualifying U.S.-assembled vehicles.
| U.S. Tax Law Comparison: Pre-TCJA vs. TCJA vs. OBBBA (2025) | | | |
|---|---|---|---|
| Provision | Pre-TCJA (2017 rules) | TCJA (2018–2024) | OBBBA (2025– ) |
| **Corporate Tax Rate** | Up to 35% | Flat 21% (permanent) | 21% (permanent, unchanged) |
| **Individual Tax Brackets** | 7 brackets, top rate 39.6% | 7 brackets, top rate 37% (set to expire 2025) | 7 brackets (10%, 12%, 22%, 24%, 32%, 35%, 37%) made permanent; indexed |
| **Standard Deduction** | \$6,350 (single), \$12,700 (married joint) | ~\$12,000 (single), ~\$24,000 (joint), indexed (expiring 2025) | \$15,750 (single), \$31,500 (joint) in 2025, indexed; permanent |
| **Personal Exemptions** | \$4,050 per person | Eliminated | Remains eliminated |
| **Child Tax Credit** | \$1,000 per child (partially refundable) | \$2,000 per child (\<17), phase-outs; scheduled to drop post-2025 | \$2,200 per child, indexed for inflation, permanent; refundable portion expanded |
| **State & Local Tax (SALT) Deduction** | Unlimited | Capped at \$10,000 (through 2025) | Raised to \$40,000 (2025–2028, phase-outs for high earners), reverts to \$10,000 afterward |
| **Mortgage Interest Deduction** | Interest on up to \$1M mortgage | Limited to \$750k (through 2025) | Continues at \$750k (no major change) |
| **Pass-Through Business Deduction (QBI)** | None | Up to 20% deduction on qualified income (expiring 2025) | Made permanent |
| **Estate Tax Exemption** | ~\$5.49M per person | Doubled (~\$11.2M per person, expiring 2025) | Permanently extended at higher level (indexed for inflation) |
| **Health Insurance Mandate (ACA)** | Penalty for no coverage | Penalty reduced to \$0 (effective 2019) | Remains \$0 |
| **Depreciation / Expensing** | Section 179, more limited | 100% bonus depreciation (phased down 2023–2026) | Made permanent under OBBBA |
| **New Provisions (not in TCJA)** | N/A | N/A | Deductions for reported tips (limited), overtime pay, auto-loan interest (U.S. vehicles) |
## The Bottom Line
The Tax Cuts and Jobs Act reshaped the U.S. tax code in 2018, and many of its temporary individual provisions were due to expire at the end of 2025. With the passage of the One Big Beautiful Bill Act on July 4, 2025, however, many of those provisions are now permanent. Taxpayers can expect continued lower rates, bigger deductions, and new reliefs, though some benefits (like the expanded SALT cap) will remain temporary or revert to previous levels after 2028.
Article Sources
Investopedia requires writers to use primary sources to support their work. These include white papers, government data, original reporting, and interviews with industry experts. We also reference original research from other reputable publishers where appropriate. You can learn more about the standards we follow in producing accurate, unbiased content in our [editorial policy.](https://www.investopedia.com/legal-4768893#EditorialPolicy)
1. U.S. Congress. "[H.R.1 - An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018: Actions](https://www.congress.gov/bill/115th-congress/house-bill/1/actions)."
2. U.S. House of Representatives, Office of the Clerk. "[Roll Call 699 \| Bill Number: H. R. 1](https://clerk.house.gov/Votes/2017699)."
3. U.S. Congress. "[H.R.1 - An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018: Summary](https://www.congress.gov/bill/115th-congress/house-bill/1)."
4. The Tax Policy Center. "[Unpacking the TCJA: Who Benefits and Who Loses from Extending Major Provisions](https://taxpolicycenter.org/taxvox/unpacking-tcja-who-benefits-and-who-loses-extending-major-provisions)."
5. U.S. Congress. "[H.R.1 - An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018](https://www.congress.gov/bill/115th-congress/house-bill/1/text)."
6. U.S. Congress. "[H.R.1994 - Setting Every Community Up for Retirement Enhancement Act of 2019](https://www.congress.gov/bill/116th-congress/house-bill/1994/text)."
7. U.S. Congress. "[H.R.1 - One Big Beautiful Bill Act](https://www.congress.gov/bill/119th-congress/house-bill/1/text)."
8. Urban Institute & Brookings Institution. "[Effects of The Tax Cuts and Jobs Act: A Preliminary Analysis](https://www.brookings.edu/wp-content/uploads/2018/06/ES_20180608_tcja_summary_paper_final.pdf)." Page 3.
9. The Tax Foundation. "[Base Erosion and Anti-Abuse Tax (BEAT)](https://taxfoundation.org/taxedu/glossary/base-erosion-anti-abuse-tax-beat/)."
10. Reuters. "[Nike Urges Court to Throw Out EU Probe Into Dutch Tax Deal](https://www.reuters.com/business/nike-urges-court-throw-out-eu-probe-into-dutch-tax-deal-2021-01-25/)."
11. NBC News. "[Mnuchin Says FEMA Doing 'A Terrific Job' in Puerto Rico](https://www.nbcnews.com/politics/politics-news/mnuchin-says-fema-doing-terrific-job-puerto-rico-n806356)."
12. U.S. Department of the Treasury. "[Analysis of Growth and Revenue Estimates Based on the U.S. Senate Committee on Finance Tax Reform Plan, December 11, 2017](https://www.crapo.senate.gov/imo/media/doc/2017DEC_TreasuryGrowthMemo.pdf)."
13. Federal Reserve Bank of St. Louis, FRED. "[Real Gross Domestic Product (Percent Change From Preceding Period)](https://fred.stlouisfed.org/series/A191RL1Q225SBEA#0)." Adjust for Annual and End of Period.
14. The Tax Policy Center. "[Distributional Analysis of the Conference Agreement for the Tax Cuts and Jobs Act](https://taxpolicycenter.org/sites/default/files/publication/150816/2001641_distributional_analysis_of_the_conference_agreement_for_the_tax_cuts_and_jobs_act_0.pdf)." Page 8.
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| Readable Markdown | ### Key Takeaways
- The Tax Cuts and Jobs Act (TCJA) was the most significant tax code overhaul in three decades, creating a single flat corporate tax rate of 21%.
- Many tax benefits that helped individuals and families were initially set to expire in 2025.
- The One Big Beautiful Bill Act (OBBBA, 2025) permanently establishes many individual provisions, such as lower tax brackets, a bigger standard deduction, and a Qualified Business Income (QBI) deduction.
- OBBBA also raises the SALT deduction cap, boosts the Child Tax Credit, and permanently enhances the standard deduction.
- New provisions include special reliefs—like deductions for tips, overtime pay, and U.S. auto-loan interest—while maintaining TCJA’s broad corporate reforms.
The Tax Cuts and Jobs Act (TCJA) was a major overhaul of the tax code, signed into law by President Donald Trump in his first term on Jan. 1, 2018. The Senate passed it on Dec. 2, 2017, by a party-line vote of 51 to 49.1 The House passed its version by a vote of 224 to 201. No House Democrats supported the bill, and 12 Republicans voted against it.2
The reform impacted [taxpayers](https://www.investopedia.com/the-best-tax-software-8780098) and [business owners](https://www.investopedia.com/the-best-tax-software-for-small-business-8780637), particularly through tax cuts. Many of the benefits for individuals were set to expire in 2025.3 However, passage of the "One Big Beautiful Bill Act" legislative package in July 2025 extended or made many of its provisions permanent.
## Effects on Individuals
TCJA impacted taxpayers based on their income level, filing status, and deductions. It permanently removed the mandate requiring people to buy health insurance, a key provision of the Affordable Care Act (ACA).3 The highest earners were expected to benefit most from the law, while the lowest and middle earners were expected to pay more in taxes if the individual tax provisions were extended past 2025.4
Here are the key provisions affecting individuals:5
- **Income tax rates**: The law kept the seven individual income tax brackets. The top rate fell from 39.6% to 37%, while the 33% bracket dropped to 32%, the 28% bracket to 24%, the 25% bracket to 22%, and the 15% bracket to 12%. The lowest bracket remained at 10%, and the 35% was unchanged.
- **Standard deduction**: TCJA raised the standard deduction for all filers.
- **Personal exemption**:The law suspended the personal exemption through 2025.
- **Health coverage mandate**: TCJA ended the individual mandate, a provision of the ACA that penalized people who didn't get [health insurance](https://www.investopedia.com/the-best-health-insurance-companies-8762191) coverage.
- **Child tax credit**: The law raised the child tax credit and created a nonrefundable credit for non-child dependents. It can only be claimed if the taxpayer provides the child's Social Security number (SSN), who must be younger than 17. These changes were set to expire in 2025.
- **Estate tax**: The law temporarily raised the [estate tax](https://www.investopedia.com/terms/e/estatetax.asp) exemption. This change is expected to be reversed after 2025.
- **Student loans**: It lets 529 plans fund K through 12 private school tuition—up to \$10,000 per year, per child. Under the SECURE Act of 2019, the benefits of 529 plans were expanded, allowing plan holders to withdraw a maximum lifetime amount of \$10,000 per beneficiary penalty-free to pay down qualified [student debt](https://www.investopedia.com/terms/s/student-debt.asp).6
- **Retirement savings**: The law repealed the ability to retroactively designate a [Roth](https://www.investopedia.com/the-best-roth-ira-brokers-8764132) contribution as a traditional [IRA](https://www.investopedia.com/the-best-ira-brokers-8764115) or vice-versa. The SECURE Act lets people contribute to IRAs after age 70½. [HSAs](https://www.investopedia.com/the-best-health-savings-account-providers-11687235) weren't affected by the law.6
- **Alternative Minimum Tax (AMT)**: The law temporarily raised the exemption amount and exemption phase-out threshold for the AMT, which was intended to curb tax avoidance among high earners.
- **Mortgage interest**: TCJA limits the [mortgage](https://www.investopedia.com/the-best-mortgage-lenders-11714101) interest deduction for married couples filing jointly to \$750,000. The change was set to expire after 2025, but was extended as part of the OBBBA.7
- **Pease limitation**: The law repealed the Pease limitation on itemized deductions and gradually reduced their value when adjusted gross income exceeds a certain threshold.8
- **Miscellaneous itemized deductions**: The suspended miscellaneous itemized deductions include deductions for moving expenses, except for active-duty military personnel, and union dues through 2025.
### Important
The law cut [corporate tax rates](https://www.investopedia.com/terms/c/corporatetax.asp) permanently and individual tax rates temporarily, except for those extended or made permanent by the OBBBA.75
## State and Local Tax (SALT)
The law capped the tax [deduction for state and local taxes](https://www.investopedia.com/trumps-tax-bill-makes-a-big-change-that-could-impact-high-earners-especially-those-in-new-york-and-california-11779390) at \$10,000 through the 2025 tax year, but this generally affects only taxpayers who live in states with notably high tax rates and who itemize their deductions rather than claim the standard deduction.5 The cap was raised to \$40,000 for tax years 2025 to 2028 under the OBBA, but will revert to \$10,000 after 2028.7
The deduction covers property and income taxes or sales taxes, but not both. Taxpayers must choose between deducting one type of tax or the other. The TCJA further limited this deduction for those who are married but file separate returns.5
## Businesses and the TCJA
Here are the key provisions affecting businesses:5
- **Corporate Tax Rate**: The law created a single corporate tax rate of 21% and repealed the corporate AMT. These provisions do not expire. Supporters argued that lowering the corporate tax rate would reduce the need for companies to move their taxes to low- or no-tax countries, often through mergers with foreign firms.
- **Immediate Expensing**: TCJA allows full expensing of short-lived capital investments rather than requiring them to be depreciated over time. The section 179 deduction cap doubles to \$1 million, and the phaseout begins after \$2.5 million of equipment spending, up from the previous \$2 million.
- **Pass-Through Income**: Owners of pass-through businesses, which include sole proprietorships, partnerships, and S corporations, gained a 20% deduction for pass-through income. To discourage high earners from recharacterizing regular wages as pass-through income, the deduction is capped at 50% of wage income or 25% of wage income plus 2.5% of the cost of qualifying property.
- **Interest**: The net interest deduction is capped at 30% of earnings before interest and taxes (EBIT).
- **Cash Accounting**: Businesses with up to \$25 million in average annual gross receipts over the preceding three years can use [cash accounting](https://www.investopedia.com/terms/c/cashaccounting.asp)—up from the old tax code's \$5 million.
- **Net Operating Losses**: The law scrapped net operating loss (NOL) carrybacks and caps carryforwards at 90% of taxable income, falling to 80%.
- **Section 199**: The law eliminated the section 199 (domestic production activities) deduction for businesses that engage in domestic manufacturing and other production work.
- **Foreign Earnings**: The law introduced a territorial tax system under which only domestic earnings are subject to tax. Companies with over \$500 million in annual gross receipts are subject to the base erosion anti-abuse tax, designed to counteract base erosion and profit shifting, a tax-planning strategy that involves moving taxable profits from one country to another with low or no taxes. BEAT is calculated by subtracting a company's regular corporate tax liability from 10% of its taxable income, ignoring base-eroding payments.9
## Intangible Property
TCJA altered the treatment of intangible property held abroad, such as patents, trademarks, and copyrights.5 For example, Nike's ([NKE](https://www.investopedia.com/markets/quote?tvwidgetsymbol=nke)) Swoosh trademark is house in an untaxed Dutch subsidiary.10
When the foreign tax rate on foreign earnings above a 10% standard rate of return is below 13.125%, the law taxes these excess returns at 21%, after a 50% deduction and a deduction worth 37.5% of FDII. This excess income, which the law assumes to be derived from intangible assets, is called global intangible low-taxed income (GILTI). Credits can offset up to 80% of GILTI liability.
Foreign-derived intangible income is from the export of intangibles held domestically, which is taxed at a 13.125% effective rate, rising to 16.406% after 2025.5
## Projected Economic Growth
Former Treasury Secretary Steven Mnuchin claimed that the Republican tax plan would spur sufficient economic growth to pay for itself and more.11 On Dec. 11, 2017, the Treasury released a one-page analysis claiming that the law would increase revenues by \$1.8 trillion over 10 years.12
The [Federal Reserve](https://www.investopedia.com/terms/f/federalreservebank.asp) projected growth of 2.5% in 2018, 2.1% in 2019, 2.0% in 2020, and 1.8% over the longer run.12 Real GDP data for the years after the TCJA showed the following growth rates:13
- 0\.6% in 2018
- 2\.8% in 2019
- 4\.6% in 2020
- 7\.0% in 2021
- 2\.8% in 2022
- 3\.4% in 2023
- 1\.9% in 2024
## Who Benefited From TCJA?
The TCJA cut the corporate tax rate to benefit shareholders, who tend to be higher earners. It only originally cut individuals' taxes for a limited period, though the OBBA extended or made permanent many of the cuts. It scaled back the AMT and estate tax and reduced the taxes levied on pass-through income. It did not close the [carried interest](https://www.investopedia.com/terms/c/carriedinterest.asp) loophole, which benefited professional investors.
The Tax Policy Center originally estimated that the majority of taxpayers (53.4%) would face a tax increase when the individual tax cuts were set to expire after 2025, while 69.7% of those in the middle quintile (40th to 60th percentile) were expected to pay more, compared to just 8% of the highest-earning 0.1%.14
Change in after-tax income by income percentile
## Updates Under the One Big Beautiful Bill Act (2025)
The OBBBA, signed into law on July 4, 2025, changes the outlook for taxpayers by making permanent many TCJA provisions as well as adding several new benefits:7
- **Permanent lower individual tax rates:** Keeps the seven-bracket system (10%, 12%, 22%, 24%, 32%, 35%, 37%) beyond 2025, adjusted for inflation.
- **Standard deduction increase and permanence:** \$15,750 for single filers and \$31,500 for married couples filing jointly in 2025; indexed for inflation.
- **Child Tax Credit raised and permanent:** Increased to \$2,200 per child, with inflation adjustments and stronger refundability.
- **SALT deduction cap raised:** From \$10,000 to \$40,000 (married filing jointly) for 2025 to 2028, phasing out for high earners; scheduled to revert afterward.
- **Qualified Business Income (QBI) deduction:** Made permanent, providing certainty for small business owners and pass-through entities.
- **New targeted deductions:**
- [No tax on tips](https://www.investopedia.com/how-the-new-tax-bill-could-boost-your-refund-next-year-11830394) (up to an annual threshold).
- No tax on the overtime pay portion of wages.
- Auto-loan interest deduction for qualifying U.S.-assembled vehicles.
| U.S. Tax Law Comparison: Pre-TCJA vs. TCJA vs. OBBBA (2025) | | | |
|---|---|---|---|
| Provision | Pre-TCJA (2017 rules) | TCJA (2018–2024) | OBBBA (2025– ) |
| **Corporate Tax Rate** | Up to 35% | Flat 21% (permanent) | 21% (permanent, unchanged) |
| **Individual Tax Brackets** | 7 brackets, top rate 39.6% | 7 brackets, top rate 37% (set to expire 2025) | 7 brackets (10%, 12%, 22%, 24%, 32%, 35%, 37%) made permanent; indexed |
| **Standard Deduction** | \$6,350 (single), \$12,700 (married joint) | ~\$12,000 (single), ~\$24,000 (joint), indexed (expiring 2025) | \$15,750 (single), \$31,500 (joint) in 2025, indexed; permanent |
| **Personal Exemptions** | \$4,050 per person | Eliminated | Remains eliminated |
| **Child Tax Credit** | \$1,000 per child (partially refundable) | \$2,000 per child (\<17), phase-outs; scheduled to drop post-2025 | \$2,200 per child, indexed for inflation, permanent; refundable portion expanded |
| **State & Local Tax (SALT) Deduction** | Unlimited | Capped at \$10,000 (through 2025) | Raised to \$40,000 (2025–2028, phase-outs for high earners), reverts to \$10,000 afterward |
| **Mortgage Interest Deduction** | Interest on up to \$1M mortgage | Limited to \$750k (through 2025) | Continues at \$750k (no major change) |
| **Pass-Through Business Deduction (QBI)** | None | Up to 20% deduction on qualified income (expiring 2025) | Made permanent |
| **Estate Tax Exemption** | ~\$5.49M per person | Doubled (~\$11.2M per person, expiring 2025) | Permanently extended at higher level (indexed for inflation) |
| **Health Insurance Mandate (ACA)** | Penalty for no coverage | Penalty reduced to \$0 (effective 2019) | Remains \$0 |
| **Depreciation / Expensing** | Section 179, more limited | 100% bonus depreciation (phased down 2023–2026) | Made permanent under OBBBA |
| **New Provisions (not in TCJA)** | N/A | N/A | Deductions for reported tips (limited), overtime pay, auto-loan interest (U.S. vehicles) |
## The Bottom Line
The Tax Cuts and Jobs Act reshaped the U.S. tax code in 2018, and many of its temporary individual provisions were due to expire at the end of 2025. With the passage of the One Big Beautiful Bill Act on July 4, 2025, however, many of those provisions are now permanent. Taxpayers can expect continued lower rates, bigger deductions, and new reliefs, though some benefits (like the expanded SALT cap) will remain temporary or revert to previous levels after 2028. |
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