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W2 + Side Hustle? Here's Why Your Withholding Is Probably Wrong

SieyantJuly 21, 20261 min read

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Try It Yourself

W-4 Withholding Checkup

$70,000

Leave deductions at $0 if you'll take the standard deduction — most people do.

Estimated Tax Owed

$6,570

for the full year

On Track to Withhold

$9,100

at this rate, 26× a year

You're on track for a refund

$2,530

To even this out, adjust Step 4(c) "Extra withholding" on your W-4 by about $97 per paycheck less, and give it to your employer's payroll/HR.

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This is an educational estimate, not tax advice, and covers one job only — it does not account for a second job or a working spouse's income (Step 2 of the W-4), itemized deductions beyond the number you enter, credits other than the Child Tax Credit, self-employment income, or state withholding. The IRS's own Tax Withholding Estimator at irs.gov can give you exact numbers for your specific W-4. Consult with a tax professional before making changes.

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The information provided on this site is for general informational purposes only and does not constitute tax, legal, or financial advice. Every situation is different — consult a qualified professional regarding your specific circumstances before making any financial or tax decisions.