Should You Adjust Your W-4 in 2026? How the New OBBBA Deductions Change Your Withholding

If you earn tips or overtime, yes, you likely should check your W-4 in 2026, since your employer’s default withholding was not automatically built around the new no-tax-on-tips and no-tax-on-overtime deductions. Left unchecked, you could be over-withheld all year and owed a bigger refund than necessary, or in some cases still under-withheld depending on your full income picture.

Why Does OBBBA Affect Your Withholding?

The 2025 tax law (OBBBA) created new federal deductions for qualified tips and qualified overtime pay, which reduce your taxable income and, for most people, your total tax bill. But payroll withholding tables are a separate system from your actual tax return, and they update on their own schedule. If your employer’s payroll system hasn’t fully incorporated the new deduction into its default withholding calculation, you may have too much withheld from every paycheck relative to what you’ll actually owe once you file and claim the deduction.

Over-withholding isn’t dangerous, you get the money back as a bigger refund, but it means you’re giving the IRS an interest-free loan all year instead of having that money in your paycheck now. For many tipped and overtime workers living paycheck to paycheck, that extra take-home pay each month matters more than a larger refund next spring.

How Do You Check If You Need to Adjust?

• Use the IRS Tax Withholding Estimator at IRS.gov. It walks you through your income, filing status, and expected deductions, including tips and overtime, and tells you whether your current withholding is on track, too high, or too low.
• Have your most recent pay stub handy, along with an estimate of your annual tips or overtime, to get an accurate result.
• Check your state situation too. If you live in a state that hasn’t adopted the federal deduction, your state withholding may need to stay higher even while your federal withholding could reasonably drop.

How Do You Actually Change Your Withholding?

Submit a new Form W-4 to your employer, not the IRS directly. The current W-4 uses a straightforward, step-based format rather than the old “allowances” system:

• Step 1: Your basic filing status and personal information.
• Step 2: Multiple jobs or a working spouse, which affects how much should be withheld across all your income sources combined.
• Step 3: Claim dependents, including the Child Tax Credit if applicable.
• Step 4: Other adjustments, including extra income, deductions beyond the standard deduction, or an extra flat amount you want withheld each pay period.

You can submit a new W-4 at any time, not just when starting a job, and most employers let you update it through an online payroll portal in a few minutes.

What Happens If You Do Nothing?

Nothing bad happens immediately, you’ll simply get whatever difference is owed to you as part of your refund when you file. The main cost is cash flow: if you’re over-withheld, that money sits with the IRS all year rather than in your pocket. If you’d rather have more in each paycheck now instead of a bigger lump sum at tax time, adjusting your W-4 is the tool for that, not something you’re required to do.

Could You End Up Under-Withheld Instead?

It’s possible if your full financial picture doesn’t neatly fit the standard withholding assumptions, for example, if you also have significant side income, invest heavily, or your household has multiple jobs. The IRS Tax Withholding Estimator accounts for these scenarios better than guessing on your own, and running it once a year, or after any major income change, is the safest way to avoid a surprise balance due. If you do end up owing more than expected, see our guide on what to do if you can’t pay your tax bill.

Should You Check This Even Without Tips or Overtime?

It’s still a good yearly habit, since any income change, like a raise, a new job, a second job, or a big life event, changes what withholding actually fits your situation. Tipped and overtime workers are simply the group with the clearest, most immediate reason to check given the new 2026 deduction, but the estimator is useful for anyone whose paycheck feels consistently too high or too low relative to what they expect to owe.

FAQ

Do I need to change my W-4 if I get tips or overtime?

Not required, but it’s worth checking. Your employer’s default withholding may not fully reflect the new federal tips and overtime deduction, which could mean you’re over-withheld until you adjust it or get the difference back as a refund.

How often can I update my W-4?

As often as you need to. There’s no limit, and most employers allow updates any time through payroll, not just at the start of a new job.

Will adjusting my W-4 affect my state withholding too?

Usually not automatically. Federal Form W-4 only controls federal withholding. Check whether your state has a separate state withholding form if you also want to adjust that.

What tool should I use to figure out my ideal withholding?

The IRS Tax Withholding Estimator at IRS.gov is the most accurate free option, since it accounts for your specific income, deductions, and credits rather than a generic rule of thumb.

Bottom Line

Tipped and overtime workers in particular should run the IRS Tax Withholding Estimator in 2026, since standard payroll withholding may not fully reflect the new OBBBA deductions yet. A quick W-4 update can put more money in your paycheck now instead of waiting for a larger refund next year.

A quick note: withholding is about cash flow timing, not how much tax you ultimately owe, and the right adjustment depends on your full financial picture. If your situation is more complex, a CPA can help make sure you land close to accurate rather than over- or under-withheld.