Why you might want a smaller refund
A large tax refund feels like information programs, but it is actually your own money that you overpaid to the IRS throughout the year. The IRS holds that money interest-free until you file your return. If you need cash now rather than waiting until tax season, or if you would rather have more money in each paycheck, lowering your refund means adjusting how much tax your employer withholds from your pay.
The goal is to get closer to zero refund — meaning you owe nothing and the IRS owes you nothing when you file. This requires changing your W-4 form, which tells your employer how much federal income tax to take out of each paycheck.
Lowering your refund does not change your total tax bill. It only changes the timing of when you pay it — spreading the cost across the year instead of getting it back in a lump sum.
Key Takeaways
- Your refund size is controlled by your W-4 form, which you can change at any time by submitting a new one to your employer's payroll department.
- The IRS W-4 worksheet or the online W-4 calculator at irs.gov helps you figure out the right number of allowances or adjustments to reduce overwithholding.
- Increasing your allowances or claiming additional income on line 4a of the W-4 reduces what your employer withholds, which shrinks your refund.
- Changes take effect on your next paycheck, usually within one to two pay periods after your employer processes the new form.
- If you reduce withholding too much, you may owe money when you file your return, so test your changes by checking your pay stub after the first paycheck.
Understanding the W-4 and how it controls your refund
Your employer uses the W-4 to calculate how much federal tax to withhold from each paycheck. The form has changed in recent years — the current version (released in 2020) no longer uses "allowances" but instead asks about dependents, other income, and deductions.
The more allowances or dependents you claim, the less tax is withheld. The less tax withheld, the smaller your refund will be. If you claimed zero allowances on an old W-4, you were likely overwithholding significantly. Moving to one or two dependents, or claiming a spouse's income, will reduce that withholding.
You can request a new W-4 from your payroll or HR department at any time. There is no penalty for changing it, and you can change it as many times as you need to get the withholding right.
Using the IRS W-4 calculator to find your target withholding
The IRS provides a free calculator at irs.gov/w4app that walks you through your situation and tells you what to enter on your W-4. You will need your most recent pay stub, your spouse's pay information if you are married, and details about any other income or deductions.
The calculator estimates how much you will owe or receive when you file. If the result shows a large refund, the calculator will tell you what to change on your W-4 to reduce it. Write down the specific numbers it recommends — these go directly into the boxes on the form.
If you do not want to use the calculator, the IRS also publishes a paper worksheet with the same questions. Both are free and take 10 to 15 minutes to complete.
How to adjust your W-4 to lower your refund
The most direct way to reduce a refund is to increase the amount you claim on line 4a of the current W-4 form. This line asks for "other income" — you can use it to tell your employer to withhold less by entering an estimated amount of income that will not be taxed.
For example, if the calculator tells you that you are overwithholding by $2,000 per year, you could enter $2,000 on line 4a. Your employer will then reduce your withholding by roughly $38 per paycheck (assuming 26 pay periods), which will shrink your refund by about $2,000.
Alternatively, if you have a spouse who works, you can claim your spouse as a dependent on your W-4, which also reduces withholding. Or you can claim dependents if you have children or other may have access to dependents — each one reduces withholding slightly.
The exact amount withheld depends on your income level, filing status, and the number of dependents. The W-4 calculator accounts for all of these and gives you the most accurate number.
What happens after you submit a new W-4
Once you hand your new W-4 to payroll, they will process it and explore the new withholding to your next paycheck. This usually happens within one to two pay periods. Check your pay stub after the first paycheck to confirm that your withholding has changed — your net pay (the amount you take home) should increase.
If you reduced withholding too aggressively and your net pay jumped more than expected, you can submit another W-4 right away to adjust it back up. There is no waiting period between changes.
Keep a copy of the W-4 you submitted for your records. If there is ever a question about your withholding, you will have proof of what you claimed.
The risk of reducing your refund too much
If you lower your withholding more than you should, you may owe money when you file your tax return instead of receiving a refund. The IRS does not charge interest on small amounts owed if you pay when you file, but you will need to have the cash available.
To avoid this, use the IRS calculator rather than guessing. The calculator is designed to get you as close to zero as possible without pushing you into owing money. If you are unsure, it is safer to aim for a small refund ($500 or less) rather than trying to hit exactly zero.
You can also check your progress during the year using the IRS's "Tax Withholding Estimator" tool, which updates based on your year-to-date pay and taxes withheld. Run it in the summer to see if you are on track, and adjust your W-4 again if needed.
When to adjust your W-4 beyond just reducing your refund
You should also update your W-4 if your life changes — marriage, divorce, a new job, a second job, or a significant change in income. Each of these affects how much you should withhold, and the IRS calculator will show you the new target.
If you work two jobs, the second job often causes underwithholding because each employer calculates withholding independently. The W-4 has a specific section (line 3) for this situation. Filling it out correctly prevents you from owing money at tax time.
Similarly, if you have investment income, rental income, or other non-wage income, you may need to adjust your W-4 or make estimated tax payments. The calculator asks about these, so use it whenever your financial situation changes.
Frequently Asked Questions
Can I change my W-4 more than once a year?
Yes. You can submit a new W-4 whenever you want, and there is no limit on how many times you can change it. Each change takes effect on your next paycheck. If you are trying to fine-tune your withholding, you can adjust it multiple times until you get it right.
What if I am self-employed or a contractor?
Self-employed people do not have an employer to withhold taxes, so you will need to make quarterly estimated tax payments to the IRS instead. The IRS Form 1040-ES shows you how to calculate these payments. A tax professional can help you set up the right amount.
Will lowering my refund affect my tax bill or my return?
No. Lowering your refund does not change how much tax you owe — it only changes when you pay it. Your total tax liability and your return will be the same whether you withhold throughout the year or pay it all back in a lump sum at tax time.
How long does it take for a W-4 change to show up in my paycheck?
Most employers process W-4 changes within one to two pay periods. You should see the difference in your net pay on your next paycheck or the one after that. If you do not see a change after two pay periods, contact your payroll department to confirm they received and processed the form.
What if I do not know my exact income for the year?
The W-4 calculator lets you estimate. If your income is variable or you are not sure, use a conservative estimate (slightly higher than you expect) to avoid underwithholding. You can always adjust again later in the year if your actual income is different.