Side Hustle Tax Calculator
Self-employment & freelance income · 2026
Your Income
$
Gross revenue before any expenses
$
Your regular employment income (if any)
Business Expenses (Deductions)
$
$
$
$
$
$
Retirement Contributions
$
Up to 25% of net SE income (max $69,000 in 2026)
Enter your side hustle income and any business expenses to estimate your tax liability.
Total Estimated Tax Owed
$0
SE tax + federal income tax
Income BreakdownAmount
Gross side hustle income—
Total business deductions—
Net self-employment income—
SE tax deduction (50%)—
Retirement contribution deduction—
Self-Employment Tax (15.3%)Amount
Social Security (12.4% on first $176,100)—
Medicare (2.9% unlimited)—
Total SE tax—
Federal Income TaxAmount
Total taxable income—
Standard deduction—
Federal income tax (marginal rate)—
Effective federal rate—
Total tax liability—
What to Set AsideRate
Set aside from each payment—
Quarterly estimated payment—
2026 Quarterly Payment Dates
Q1 (Jan 1 – Mar 31)
Due: Apr 15, 2026
—
Q2 (Apr 1 – May 31)
Due: Jun 16, 2026
—
Q3 (Jun 1 – Aug 31)
Due: Sep 15, 2026
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Q4 (Sep 1 – Dec 31)
Due: Jan 15, 2027
—
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How Side Hustle Taxes Work
When you earn money through freelancing, gig work, or any self-employment, you are responsible for paying taxes that would normally be split between you and an employer. The most significant difference is self-employment (SE) tax — 15.3% on your net self-employment income, covering Social Security (12.4%) and Medicare (2.9%). This is double what an employee pays because you cover both the employee and employer portions.
The good news: half of your SE tax is deductible from your income taxes, reducing your federal income tax bill. Business expenses also reduce your net SE income, lowering both your SE tax and income tax simultaneously. Tracking every legitimate business expense is the single most important thing a freelancer can do to reduce their tax burden.
Self-Employment Tax Rate
SE tax is 15.3% on net self-employment income (after business expenses) up to $176,100 (2026 Social Security wage base). Above that, only Medicare's 2.9% applies. High earners (above $200K single / $250K MFJ) also owe 0.9% Additional Medicare Tax on earnings above those thresholds.
Quarterly Estimated Taxes
If you expect to owe $1,000+ in taxes from your side hustle, the IRS requires quarterly estimated payments. Failing to pay can result in underpayment penalties. The safe harbor rule: pay either 100% of last year's tax liability (110% if AGI >$150K) or 90% of current year's expected liability to avoid penalties.
Top Deductible Expenses
Home office (exclusive business use only), mileage at $0.70/mile (2026 rate), equipment and technology, software and subscriptions, professional development and courses, marketing and advertising, business insurance, health insurance premiums (self-employed), legal and accounting fees, business portion of phone/internet.
Retirement Tax Savings
SEP-IRA: contribute up to 25% of net SE income, max $69,000 (2026). Solo 401(k): up to $23,500 employee contribution + 25% employer contribution = $69,000 combined max. Simple IRA: $16,500 max. Every dollar contributed to these accounts reduces your taxable income dollar-for-dollar, cutting both SE tax (through reduced net income) and federal income tax.
This calculator estimates federal taxes only. State income taxes, local taxes, and the Additional Medicare Tax (0.9% above $200K single/$250K MFJ) are not included. Consult a tax professional or CPA for your specific situation.
Frequently Asked Questions
Do I have to pay taxes on side hustle income?+
Yes. All self-employment income is taxable, regardless of whether you receive a 1099 form. The IRS requires you to report any net self-employment income above $400 per year. You must pay self-employment tax (15.3%) on your net earnings AND federal income tax at your marginal rate. If you earned more than $600 from a single client or platform, they should send you a 1099-NEC. But even income below $600 (or if no 1099 is sent) is legally taxable and must be reported on Schedule C of your tax return.
What is self-employment tax and how is it calculated?+
Self-employment tax is 15.3% of your net self-employment income (gross income minus business expenses). It consists of: Social Security tax at 12.4% (on income up to $176,100 in 2026) and Medicare tax at 2.9% (unlimited income). When you work as an employee, your employer pays half (7.65%) and you pay half. As a self-employed person, you pay the full 15.3%. The calculation uses 92.35% of your net SE income (multiplying by 0.9235 first) to account for the deduction of the "employer" portion. You can then deduct 50% of the SE tax from your gross income when calculating your income tax.
When do I need to make quarterly estimated tax payments?+
You must pay quarterly estimated taxes if you expect to owe at least $1,000 in federal taxes after withholding and refundable credits. 2026 due dates: Q1 (Jan-Mar): April 15. Q2 (Apr-May): June 16. Q3 (Jun-Aug): September 15. Q4 (Sep-Dec): January 15, 2027. To avoid an underpayment penalty, pay either 90% of your current year tax liability or 100% of your prior year's total tax (110% if your prior year AGI exceeded $150,000). If you have a W-2 job, you can increase withholding from that job instead of making separate quarterly payments.
What percentage of my side hustle income should I set aside for taxes?+
A common rule of thumb is 25-30% for federal taxes (SE tax + income tax) for most freelancers with moderate income. The exact amount depends on your total income including W-2 wages. If you have a day job and a modest side hustle, the side income is taxed at your marginal rate PLUS 15.3% SE tax. For someone in the 22% federal bracket: 22% + ~14% SE tax (after the 50% SE deduction) = roughly 36% effective rate on side income. Always set aside at least 30% and adjust based on your actual calculated liability.
What business expenses can I deduct from freelance income?+
Deductible business expenses must be "ordinary and necessary" for your business. Common deductions: Home office (must be used exclusively and regularly for business — simplified method: $5/sq ft up to 300 sq ft = $1,500 max). Mileage: $0.70/mile (2026 standard rate). Equipment and technology directly used for work. Software and subscriptions. Professional development and courses. Marketing and advertising. Professional memberships. Health insurance premiums (if not eligible for employer coverage). Portion of phone and internet used for business. Legal and accounting fees. Self-employed retirement contributions.
Can I deduct my home office if I work from home?+
Yes, if you use the space exclusively and regularly for your business — and it's your principal place of business. The key requirement is "exclusive use": a desk in your bedroom where you also watch TV doesn't qualify, but a spare room used only for work does. Two methods: (1) Simplified: $5 per square foot, maximum 300 sq ft = $1,500 maximum deduction. (2) Regular method: calculate the percentage of your home used for business and deduct that percentage of rent/mortgage interest, utilities, and repairs. The regular method requires more recordkeeping but often yields a larger deduction for those with high housing costs.
Should I form an LLC or S-Corp for my side hustle?+
For most side hustles earning under $40,000-$50,000 net profit, operating as a sole proprietor (Schedule C) is simplest and usually fine. The main benefit of an S-Corp election becomes significant above roughly $40,000-$80,000 in net profit: you can pay yourself a reasonable salary (subject to SE tax) and take the rest as distributions (not subject to SE tax), potentially saving thousands. Example: $100,000 net profit as S-Corp, $60,000 salary, $40,000 distribution. SE tax applies only to the $60,000 salary. Single-member LLCs are taxed as sole proprietors by default (no SE tax savings). Consult a CPA when net profit consistently exceeds $40,000-$50,000.
How does a SEP-IRA reduce my taxes?+
A SEP-IRA (Simplified Employee Pension) allows self-employed people to contribute up to 25% of net self-employment income (after the SE tax deduction), with a maximum of $69,000 in 2026. Every dollar contributed is deducted from your taxable income. Example: $50,000 net SE income, $12,500 SEP-IRA contribution (25%). That $12,500 reduces your taxable income by $12,500, saving you approximately $12,500 x (marginal rate + ~14% SE equivalent) in taxes. For a 22% bracket taxpayer, that's about $4,500 in tax savings. SEP-IRAs can be opened and funded up to the tax filing deadline (April 15, plus extensions).
What records should I keep for my side hustle?+
Maintain records for at least 3 years (7 years if you claim a bad debt or worthless securities). Keep: all 1099-NEC and 1099-K forms received, bank statements for your business account, receipts for all business expenses, mileage log (date, destination, business purpose, miles), home office measurements and utility bills, invoices sent to clients, contracts with clients, any asset purchases (equipment, etc.). Recommended practice: open a separate business bank account and credit card to keep business finances separate from personal. Use accounting software (QuickBooks, Wave, FreshBooks) or spreadsheets to categorize income and expenses throughout the year, not all at once in April.
What is a 1099-K and do I need to report it?+
A 1099-K is issued by payment processors (PayPal, Venmo, Stripe, Square, Amazon, Etsy, etc.) for business transactions. The reporting threshold has changed significantly: for 2026, the IRS threshold is $600 in annual payments through these platforms (originally meant to phase in from the $20,000/200-transaction rule). Important: 1099-K shows gross payments and may include personal reimbursements (splitting dinner) which are NOT income. You must reconcile your 1099-K against your actual business income. Report all actual income regardless of whether you receive a 1099-K. The burden of proof is on you if the IRS questions the difference between your 1099-K total and reported income.