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Side Hustle Tax Calculator

2025
Your Details
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Side Hustle Tax Impact

Side Hustle Profit

$17,000

Total Additional Tax

$7,408

Net Side Hustle Income

$9,592

Detailed Breakdown
W-2 Income$70,000
Side Hustle Income$20,000
Side Hustle Expenses-$3,000
Side Hustle Profit$17,000
Self-Employment Tax$2,402
Additional Income Tax$5,006
Total Additional Tax$7,408
Net Side Hustle Income$9,592
Effective Rate on Side Hustle43.6%
More Information
Understanding Side Hustle Taxes

Do I have to pay tax on side hustle income?

Yes. All side hustle income is taxable. If your net self-employment earnings are $400 or more, you must file Schedule SE and pay self-employment tax (15.3%). The income is also subject to federal and state income taxes at your marginal rate. Your W-2 income affects which tax bracket your side hustle income falls into.

When does the $400 threshold apply?

If your net self-employment income (side hustle revenue minus business expenses) is $400 or more, you are required to pay self-employment tax and file Schedule SE. Even if below $400, you still must report the income on your tax return -- the $400 threshold only applies to SE tax filing.

How does my W-2 income affect side hustle taxes?

Your W-2 income determines the starting tax bracket for your side hustle income. Since side hustle income is added on top, it is taxed at your marginal rate. For Social Security, if your W-2 wages are already above the SS wage base ($176,100 in 2025), you will not owe the SS portion of SE tax on side hustle income, only the Medicare portion.

IRS-Aligned: This calculator uses 2025 IRS tax rates and considers the interaction between W-2 and self-employment income. Consult a tax professional for complex multi-income situations.

Disclaimer: This calculator provides estimates based on current IRS rates and thresholds for the 2025 tax year. It does not constitute professional tax, financial, or legal advice. Your actual liability may differ depending on your filing status, state of residence, deductions, and individual circumstances. Always consult a qualified tax professional or CPA before making financial decisions. Read our terms

Sources & References
2025

This calculator uses official rates and thresholds from:

Last verified: March 2026 · Tax year 2025. Results are indicative — consult a qualified accountant for personalised advice.