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//// Tax · Side Income

Side Hustle Tax Calculator

Your side income stacks on top of your W-2 and hits your highest tax bracket — plus 15.3% SE tax. See your total additional tax, effective rate on side income, and quarterly payment.

401(k) Limit 2024$23,000
Roth IRA Limit$7,000
S&P 500 Avg Return~10%/yr

Additional tax owed on side hustle

$4,320

33.2% effective rate on side income · $1,080/quarter

You owe SE tax even if you don't get a 1099

Self-employment tax applies to all net self-employment income above $400 — regardless of whether a 1099 was issued. The 1099-K threshold only affects reporting requirements, not your tax obligation. You must report and pay taxes on all business income.

Your numbers

Your gross wages before any deductions

$

Total revenue before expenses (Etsy, freelance, tutoring, etc.)

$

Software, supplies, home office, mileage — deductible costs

$

SE Tax

$1,837

15.3% SS + Medicare

Federal Tax

$2,483

22% marginal

State Tax

$0

no state tax

You Keep

$8,680

after all taxes

Why side hustle income feels heavily taxed

Your W-2 income already fills the lower tax brackets. Side hustle income stacks on top and gets taxed at your 22% marginal rate — not your average/effective rate. Add 15.3% SE tax on top, and the combined rate on side income is 33.2%. You benefit from no state income tax.

Tax breakdown

Side hustle gross$15,000
Business expenses$2,000
Net side income$13,000
Self-employment tax (15.3%)$1,837
Additional federal income tax$2,483
Total additional tax$4,320
Net side income you keep$8,680

Quarterly estimated payment

$1,080/quarter

Pay by Apr 15 · Jun 16 · Sep 15 · Jan 15 to avoid underpayment penalties.

Tax rate on side income

33.2%

SE tax 14.1% + federal 22% marginal

Estimates only — not tax advice. State rates are approximate marginal rates; actual liability depends on your full state return. Consult a CPA for your actual tax obligation.