2026 IRS Rates · Self-Employment Tax · Quarterly Payments

Side Hustle Tax Calculator

Estimate the taxes on your freelance, gig, or self-employment income. Calculates self-employment tax, federal income tax, quarterly estimated payments, and how much to set aside from every payment.

Last updated · 2026 brackets, wage base, 1099 thresholds and mileage rates checked against IRS and SSA

2026 SE Tax 15.3%
Quarterly Payment Schedule
Common Deductions
Set-Aside % Per Payment
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Side Hustle Tax Calculator
Self-employment & freelance income · 2026
Your Income
$
Gross revenue before any expenses
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Your regular employment income (if any)
Business Expenses (Deductions)
$
$
$
$
$
$
Retirement Contributions
$
Up to 20% of net SE earnings (max $72,000 in 2026)
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Enter your side hustle income and any business expenses to estimate your tax liability.

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How Side Hustle Taxes Work

Side hustle profit is taxed twice at the federal level: about 14.1% self-employment tax plus income tax at your top bracket. With a $60,000 day job, $25,000 of side profit adds about $6,972 of federal tax in 2026, or 27.9% of profit. Enter your income and expenses above to get your own set-aside rate and quarterly payments.

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 $184,500 (2026 Social Security wage base, shared with any W-2 wages). 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 72.5 cents a mile to 30 June 2026 and 76 cents from 1 July, 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: a sole proprietor can contribute about 20% of net SE earnings (after the half SE tax deduction), max $72,000 in 2026. Solo 401(k): up to $24,500 as the employee ($32,500 if 50+) plus the same 20% as the employer, $72,000 combined max before catch-up. SIMPLE IRA: $17,000. Contributions lower your federal income tax dollar for dollar, but they do not reduce self-employment tax, which is figured before them.

Federal Tax on Side Profit by Day-Job Income

Single filer, 2026, standard deduction and the 20% QBI deduction, no retirement contributions. The tax shown is only the extra tax the side profit causes.

Side profitNo day job$60,000 day job$120,000 day job
$5,000$706 (14.1%)$1,153 (23.1%)$1,563 (31.3%)
$10,000$1,413 (14.1%)$2,399 (24.0%)$3,161 (31.6%)
$25,000$4,103 (16.4%)$6,972 (27.9%)$7,957 (31.8%)
$50,000$9,732 (19.5%)$14,593 (29.2%)$15,951 (31.9%)

Without a day job, the standard deduction absorbs small profits, so only self-employment tax is due. With a job, every side dollar lands in your top bracket. In the 22% bracket each extra dollar of profit costs about 14.1 cents of SE tax and 16.4 cents of income tax, roughly 30.5 cents before state tax.

2026 Filing and Reporting Thresholds

Rule2026 figure
Schedule SE and self-employment taxNet SE earnings of $400 or more
Form 1099-NEC from a clientPayments of $2,000 or more (was $600 through 2025)
Form 1099-K from a payment app or marketplaceOver $20,000 and over 200 transactions
Estimated tax paymentsExpected to owe $1,000 or more after withholding
Standard mileage rate72.5 cents a mile January to June, 76 cents from July 1
Home office, simplified method$5 per square foot, up to 300 square feet ($1,500)

The 1099 thresholds only decide whether a form is sent. All side income is taxable and belongs on Schedule C, form or no form.

The QBI Deduction Most Side Hustlers Miss

A sole proprietor can deduct up to 20% of qualified business income, meaning profit minus the deductible half of SE tax and retirement contributions for yourself. The deduction is capped at 20% of taxable income and is taken whether or not you itemize. In 2026 it is available in full to most side businesses below $201,750 of taxable income ($403,500 joint).

Example: $25,000 of profit next to a $60,000 job. Half of SE tax is $1,766, so QBI is $23,234 and the deduction is $4,647. All of it comes out of the 22% bracket, a saving of about $1,022. It does not reduce self-employment tax. The calculator above now includes it.

Paying the Tax: Withholding or Quarterly Payments

If you have a job, the easiest route is extra withholding. Put the yearly amount divided by your remaining paychecks in Step 4(c) of a new W-4: $6,972 over 26 biweekly checks is about $268 a check. Withholding counts as paid evenly through the year, even if you start late.

Otherwise pay with Form 1040-ES: April 15, June 15 and September 15, 2026, and January 15, 2027. For the example above that is about $1,743 a quarter. You avoid a penalty if you pay at least 90% of this year's tax or 100% of last year's (110% if last year's AGI was over $150,000).

Full-time freelancers can see the whole Schedule SE breakdown in the self-employment tax calculator.

Method and sources. SE tax is net profit × 92.35% × 15.3%, with the 12.4% part limited to the 2026 wage base left after W-2 wages. Income tax is the tax on wages plus profit, after half of SE tax, the standard deduction and the QBI deduction, minus the tax on the wages alone, using 2026 brackets. Every figure above was computed that way. Sources: IRS Schedule SE and Schedule C instructions, IRS Revenue Procedure 2025-32, IRS Form 1099-NEC/1099-MISC and 1099-K guidance after the One Big Beautiful Bill Act, IRS 2026 standard mileage rates (Internal Revenue Bulletin 2026-29), Social Security Administration wage base. State tax and the Additional Medicare Tax are not included.
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

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 a single client pays you $2,000 or more in 2026 (the threshold was $600 through 2025), they should send you a 1099-NEC. But even income below that (or if no 1099 is sent) is legally taxable and must be reported on Schedule C of your tax return.

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 combined wages and SE income up to $184,500 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.

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 15. 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.

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, each extra dollar of profit costs about 14.1 cents of SE tax plus about 16.4 cents of income tax after the half SE tax and 20% QBI deductions, roughly 30.5% in total. Add your state rate on top and adjust once you know your actual liability.

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: 72.5 cents a mile for January to June 2026 and 76 cents from July 1, 2026 (IRS standard rate, raised mid-year). 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.

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.

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.

A SEP-IRA (Simplified Employee Pension) lets a sole proprietor contribute about 20% of net self-employment earnings (net profit minus half of the SE tax), with a maximum of $72,000 in 2026. The contribution is deducted from income for federal income tax, but it does not lower self-employment tax. Example: $50,000 net SE income means about $7,065 of SE tax, so the SEP base is about $46,468 and the maximum contribution is about $9,290. In the 22% bracket that saves roughly $2,040 of federal income tax, plus any state income tax. SEP-IRAs can be opened and funded up to the tax filing deadline (April 15, plus extensions).

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.

A 1099-K is issued by payment processors (PayPal, Venmo, Stripe, Square, Amazon, Etsy, etc.) for business transactions. The One Big Beautiful Bill Act restored the old threshold: platforms only have to send a 1099-K when your payments exceed $20,000 and 200 transactions in a year. 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.

Only above the thresholds. A business client sends a Form 1099-NEC if it pays you $2,000 or more in 2026, and payment apps or marketplaces send a Form 1099-K only if you receive over $20,000 across more than 200 transactions. Below those, you usually get no form, but the income is still taxable and must be reported.

Yes, for business driving. The IRS standard rate is 72.5 cents a mile for January to June 2026 and 76 cents from July 1. Driving between clients or to pick up supplies counts; commuting from home to a regular job does not. Keep a log with the date, destination, purpose and miles for every trip.
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