Tax Withholding Calculator — Is Your W-4 Withholding Right?
Find the right W-4 withholding to avoid owing taxes or a huge refund.
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Your Results
Estimated Amount Owed
$9,034
You are under-withholding
Ideal Per-Period Withholding
$547
Adjust W-4 to this amount
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How This Calculator Works
Ideal Withholding per Period = Total Annual Tax ÷ Pay Periods
Frequently Asked Questions
If you received a large refund last year, you over-withheld. The IRS average refund is $3,000+ — that's $250/month you could have used all year. Adjust your W-4.
Estimate your full-year tax liability. Subtract expected credits. Divide by number of pay periods. Use IRS Tax Withholding Estimator at irs.gov for precision.
If you owe more than $1,000 at filing AND didn't pay at least 90% of current year tax (or 100% of prior year), you owe an underpayment penalty (~5% annually).
New W-4 (2020+): Step 4(c) allows extra withholding per paycheck. Step 4(b) for deductions. Or use IRS withholding estimator. Submit to payroll to take effect next paycheck.
Yes — marriage changes filing status. "Married Filing Jointly" often means less withholding. But two incomes can push into higher bracket. Update W-4 for both spouses.
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Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.