The 2017 Tax Cuts and Jobs Act expires on December 31, 2025

Most of the individual income tax cuts from the 2017 Tax Cuts and Jobs Act are set to end on December 31, 2025, unless Congress votes to extend them before that date. This means tax rates, standard deductions, and child tax credits will revert to what they were before 2017 unless new legislation passes.

The expiration date was written into the original law. Congress chose this approach partly for budget reasons — it made the law's cost appear smaller on paper. But it also means that without action, millions of people will see their tax bills change on January 1, 2026.

Whether Congress extends these cuts, lets them expire, or modifies them remains uncertain. That decision will happen in 2025, likely during the final months of the year.

Key Takeaways

  • Individual income tax rates, standard deductions, and most personal tax breaks expire December 31, 2025, unless Congress extends them.
  • Corporate tax rates are permanent and will not change on that date — only individual provisions sunset.
  • Congress will have to vote on an extension before the end of 2025 if it wants to keep the current tax structure in place.
  • Tax filing for 2025 income will use the current rules; changes would affect taxes filed in 2026 for 2025 income.

Which tax provisions actually expire in 2025

The income tax rate brackets themselves expire. This means the seven tax brackets (10%, 12%, 22%, 24%, 32%, 35%, and 37%) will disappear. The old pre-2017 brackets will return unless Congress acts. For most people, this means a higher percentage of income taxed at each level.

The standard deduction — the amount you can deduct without itemizing — will drop. For 2025, the standard deduction is $14,600 for single filers and $29,200 for married couples filing jointly. After 2025, these amounts will fall to lower levels adjusted for inflation from the pre-2017 law.

The Child Tax Credit drops from $2,000 per child to $1,000 per child. The credit also becomes less refundable, meaning fewer families get money back if the credit exceeds their tax bill.

Other provisions that expire include the increased deduction for pass-through business income, the expanded adoption credit, and the elimination of personal exemptions. The Alternative Minimum Tax (AMT) exemption also reverts to a lower amount.

What stays the same after 2025

The corporate tax rate of 21% is permanent. It will not change on January 1, 2026. This was one of the few parts of the 2017 law written to last indefinitely.

Estate tax changes are also permanent. The estate tax exemption will remain at the higher level set in 2017, though this is a separate issue from the individual income tax provisions.

Certain business provisions, like the ability to deduct 100% of business equipment purchases in the year acquired, have different expiration dates or are permanent. These are technical provisions that affect business owners and investors more than wage earners.

What Congress might do before the deadline

Congress could vote to extend all the expiring provisions for another period — perhaps 5 or 10 years, or permanently. This is the most common scenario discussed by lawmakers from both parties, though they disagree on which provisions to extend and for how long.

Congress could also modify the provisions — for example, extending some but not others, or changing the amounts. For instance, lawmakers might keep the higher standard deduction but lower the corporate rate, or vice versa.

Congress could let the provisions expire as written, which would raise taxes on most individual filers. This is politically difficult and rarely happens without deliberate choice, but it remains possible.

The timing of any decision is uncertain. Congress sometimes waits until late in the year to act, creating uncertainty for tax planning. In some cases, Congress has retroactively extended tax provisions after the expiration date passed.

How this affects your 2025 taxes and beyond

Your 2025 tax return, filed in early 2026, will use the current rules — the rates and deductions that are in effect through December 31, 2025. If Congress has not yet acted by the time you file, you will file under the current law.

If Congress extends the cuts after you file but before the deadline, your 2025 return does not change. The extension would affect your 2026 taxes, filed in early 2027.

If Congress lets the provisions expire without extension, your 2026 taxes (filed in early 2027) will use the old pre-2017 brackets and deductions. This would be a significant change for most households.

Tax planning for 2025 is complicated by this uncertainty. Some people try to accelerate income or deductions into 2025 to take advantage of current rates, while others wait to see what Congress does. A tax professional can help you think through your specific situation.

Why Congress built in an expiration date

The 2017 law used a budget rule called "reconciliation" to pass without needing 60 votes in the Senate. This rule has a cost limit — the law cannot add more than a certain amount to the deficit over ten years. By making individual provisions expire after 2025, the law's total cost appeared smaller, allowing it to fit under the limit.

This was a deliberate choice, not an accident. Lawmakers knew the provisions would expire unless extended. Some saw this as a way to force a future Congress to make a deliberate choice about taxes. Others criticized it as creating uncertainty for families and businesses.

The corporate tax rate was made permanent because it was considered a permanent change to business taxation. Individual provisions were treated differently, partly for budget reasons and partly because they were seen as temporary stimulus measures.

What you should do now

Monitor news about tax legislation in 2025. If Congress votes to extend the provisions, that will likely be reported widely. If you have questions about how this affects your specific situation, a tax professional or accountant can help you plan.

Do not make major financial decisions based on the assumption that current tax rates will continue indefinitely. It is reasonable to plan for the possibility that taxes could change in 2026.

If you are self-employed or own a business, pay particular attention to provisions affecting business income. The pass-through deduction and equipment depreciation rules have different expiration dates and rules than individual income tax provisions.

Frequently Asked Questions

Will my taxes definitely go up in 2026?

Not necessarily. It depends on what Congress does before the end of 2025. If Congress extends the current provisions, your tax situation will not change. If Congress lets them expire, most people will pay more in taxes, but the amount varies based on income and family situation.

Can Congress extend the tax cuts after December 31, 2025?

Yes. Congress has extended tax provisions retroactively in the past, sometimes months or even years after the expiration date. However, this creates uncertainty and is generally less predictable than extending before the deadline.

Does this affect Social Security or Medicare taxes?

No. Social Security and Medicare payroll taxes are separate from income tax and are not affected by the 2017 law's expiration. Those tax rates remain the same regardless of what Congress does with income tax provisions.

What if I have already paid taxes under the current rules for 2025?

Your 2025 return uses the current rules regardless of what Congress does later. If the law changes after you file, it does not affect your 2025 return. Changes would apply to 2026 taxes and beyond.

Should I try to do anything before the end of 2025?

That depends on your specific financial situation. Some people accelerate income or defer deductions based on expected tax changes, but this is complex and depends on your circumstances. A tax professional can advise you on whether any planning makes sense for you.