What determines whether your refund grows or shrinks

Your 2026 refund depends almost entirely on your own tax situation—your income, deductions, withholding, and life changes—not on IRS policy shifts. The IRS does not decide who gets larger refunds; you do, through the choices you make about how much tax to have withheld from your paychecks or paid in quarterly installments. If you want a bigger refund in 2026, you need to have more tax withheld than you actually owe, or pay more in estimated taxes than required.

That said, a few external factors could push refunds up or down across the board. Tax brackets adjust yearly for inflation, which typically means slightly lower tax bills. Some tax credits and deductions change by law or expire. And if Congress passes new tax legislation before 2026, that could reshape refunds for millions of people—but as of now, no major changes are scheduled.

Key Takeaways

  • Your refund size is determined by how much tax you had withheld versus how much you actually owe, not by IRS decisions or policy.
  • Tax brackets increase slightly each year for inflation, which typically results in slightly lower tax bills and smaller refunds if withholding stays the same.
  • Life changes—marriage, divorce, new job, home purchase, child birth—can increase or decrease your refund more than any IRS change will.
  • To get a larger refund in 2026, you can increase withholding on your W-4 form or pay more in estimated quarterly taxes.
  • The current tax law expires at the end of 2025, so Congress may pass new legislation that affects 2026 refunds, but nothing is certain yet.

How inflation adjustments affect your refund

Each January, the IRS raises tax brackets, the standard deduction, and most tax credits to account for inflation from the previous year. For 2025, the standard deduction rose to $14,600 for single filers and $29,200 for married couples filing jointly. These increases mean you can earn more money before owing the same amount of tax.

If your income stays flat and your withholding stays the same, a bracket adjustment usually means a smaller refund—because you owe less tax overall, but you had the same amount withheld. The opposite is also true: if your income grows faster than inflation, you may owe more tax and get a smaller refund unless you increase withholding. The 2026 adjustments will follow the same pattern, but the exact percentages depend on inflation data the IRS will not finalize until late 2025.

Tax law changes that could reshape 2026 refunds

The Tax Cuts and Jobs Act, which lowered tax rates and raised the standard deduction, is set to expire on December 31, 2025. If Congress does not extend it, tax rates will revert to their pre-2017 levels starting January 1, 2026—a change that would increase tax bills and potentially increase refunds if withholding does not adjust. However, Congress has extended this law before, and may do so again. No extension has been passed yet.

Several tax credits also have expiration dates. The Child Tax Credit, currently $2,000 per child, is scheduled to drop to $1,000 in 2026 unless extended. The Earned Income Tax Credit and other credits may also change. These are legislative decisions, not IRS decisions, and they remain uncertain until Congress acts. If you have children or expect your income to fall into a lower bracket, watch for news about these credits in late 2025.

How your own life changes matter more than IRS policy

Marriage, divorce, a new job, a promotion, a side business, a home purchase, or the birth of a child will affect your 2026 refund far more than any tax law change. Each of these events changes your filing status, income, deductions, or credits. A marriage might let you file jointly and use a wider bracket. A home purchase opens the mortgage interest deduction. A new child adds a $2,000 credit (if the law extends it). A job loss or income drop shrinks your tax bill.

If you know a major life change is coming in 2026, you can adjust your W-4 form now to change your withholding. The IRS W-4 tool on IRS.gov lets you estimate your tax and set withholding to match. This is the most direct way to control your refund size.

Why increasing withholding now is the fastest way to a bigger 2026 refund

If you received a large refund in 2025 and want a smaller one in 2026—or vice versa—you do not have to wait for the IRS to change anything. You can change your W-4 form at your employer right now. Claiming fewer allowances or entering a dollar amount in the "extra withholding" line will increase the tax taken from each paycheck, which grows your refund. Claiming more allowances does the opposite.

The W-4 form is free and takes minutes to file with your payroll department. You can change it as many times as you want during the year. If you are self-employed or pay estimated taxes quarterly, you can adjust your quarterly payment amounts the same way. This is the only lever you fully control; everything else depends on Congress, inflation, or your personal circumstances.

What to watch for in late 2025

By October or November 2025, Congress will likely signal whether it plans to extend the expiring tax law. If an extension passes, your 2026 refund will follow the same basic rules as 2025. If it does not, tax rates will rise and refunds could shift significantly. The IRS will also publish the 2026 tax brackets and standard deduction amounts in late 2025, which will give you a clearer picture of your own tax bill.

The IRS typically updates its withholding calculator and publishes guidance in December, before the new tax year begins. If you want to plan ahead, check IRS.gov in November or December 2025 for the final numbers and use the W-4 calculator to see how your withholding should change.

Frequently Asked Questions

Will the IRS automatically adjust my withholding for 2026?

No. The IRS does not change your withholding automatically. You must update your W-4 form yourself if you want to change how much tax is taken from your paychecks. Your employer will not know about tax law changes unless you tell them by filing a new W-4.

If Congress extends the tax law, will my refund stay the same as 2025?

Not necessarily. Even if tax rates stay the same, your refund depends on your income, deductions, and withholding in 2026. A raise, a new deduction, or a change in family status will shift your refund regardless of whether the law extends.

Can I get a refund increase by doing something now?

Yes. You can increase your W-4 withholding now, which will grow your 2026 refund. You can also open a side business, buy a home, or make other life changes that create new deductions or credits. The fastest and most direct option is adjusting your W-4.

What if I owe taxes in 2025—will I owe more in 2026?

Not automatically. If you owed taxes in 2025, it means you had too little withheld. To avoid owing in 2026, increase your W-4 withholding or make larger estimated tax payments. Your tax bill itself depends on your 2026 income and deductions, which may be different from 2025.