Estimate your quarterly tax payments as a freelancer, gig worker, or independent contractor. This calculator accounts for self-employment tax (15.3%), federal income tax, and shows your safe harbor amount to avoid underpayment penalties. Perfect for Uber, DoorDash, Etsy sellers, and any 1099 workers.
If you earn $400 or more in self-employment income in a year — freelance writing, ride-share driving, Etsy sales, side consulting, or any 1099 work — the IRS expects you to pay estimated taxes quarterly throughout the year, not just once at filing time. Unlike W-2 employees who have taxes automatically withheld from each paycheck, self-employed workers are responsible for setting aside and remitting taxes themselves. Missing the quarterly payments triggers underpayment penalties, often equivalent to 8%+ annualized on the underpaid amount.
The tax bill on self-employment income comes in two parts. First, self-employment tax (15.3% on net earnings up to the Social Security wage base, then 2.9% for Medicare above that). This covers both the employer and employee portions of FICA that W-2 workers split with their employer — you pay both because you're both the employer and the employee. Second, federal income tax on your business profit (revenue minus deductible expenses), added to any other income at your marginal rate.
This calculator estimates your annual self-employment + federal income tax liability based on your projected freelance income, deductible business expenses, filing status, and any W-2 income (which has its own withholding). It also shows the recommended quarterly payment amount and the "safe harbor" threshold — the payment level that protects you from underpayment penalties even if your final tax bill comes in higher than expected. State and local income tax are not included; add your applicable state rate on top.
Annual freelance income: $75,000. Business expenses: $8,000. Net SE Income: $67,000 SE Tax: $67,000 × 0.9235 × 0.153 = $9,469 Deductible half: $4,734 Standard deduction: $15,000 (2025 single) Taxable income: $67,000 − $15,000 − $4,734 = $47,266 Federal income tax: ~$5,654 Total tax: $9,469 + $5,654 = $15,123 Quarterly: ~$3,781 Roughly 20% of gross income owed in federal tax. Add state income tax (5%) and total tax burden is around 25%. Plan accordingly.
W-2 day job: $65,000 (tax already withheld). Plus side gig: $15,000 with $2,000 expenses. Side gig net: $13,000 SE Tax on side gig: $13,000 × 0.9235 × 0.153 = $1,837 Deductible half: $919 Total taxable income: $65,000 + $13,000 − $15,000 − $919 = $62,081 Federal income tax on total: ~$9,300 W-2 withholding already covers ~$7,300. Additional owed: $9,300 − $7,300 = $2,000 (income tax) + $1,837 (SE tax) = $3,837 owed. Quarterly payment for the side gig: ~$960. The side gig's tax bill is roughly 26% of its gross — higher than the marginal rate would suggest because SE tax stacks on top of income tax. Common surprise for moonlighters.
Annual Etsy sales: $25,000. Cost of goods sold: $8,000. Other expenses (fees, shipping): $4,000. Net business income: $25,000 − $8,000 − $4,000 = $13,000 SE Tax: $13,000 × 0.9235 × 0.153 = $1,837 Deductible half: $919 Standard deduction: $15,000 (single) Taxable income: $13,000 − $15,000 − $919 = -$2,919 (no income tax owed) Total tax: $1,837 (SE tax only) Quarterly: ~$460 For small-scale freelancers/sellers, SE tax is the primary tax bill. Federal income tax is zero because the standard deduction wipes out the small profit.
Use this calculator if you have any 1099 / self-employment income — full-time freelancers, side-hustlers, gig economy workers (Uber, Lyft, DoorDash, Instacart), Etsy and eBay sellers, small business owners, freelance designers/writers/developers, real estate agents (typically 1099), and consultants.
Calculate at the start of the year (using last year's actual numbers as a baseline) and re-run mid-year if income or expenses come in different from expectations. The estimated tax safe harbor is forgiving — paying 100% of last year's tax (110% if AGI > $150K) protects you regardless of how much more you earn this year. This is often the easiest path.
Pair this with the self-employment-tax calculator (more detailed SE tax breakdown), the income-tax-estimator (for federal income tax detail), the side-hustle-income calculator (for projecting net side-gig income after taxes), and the budget calculator (since taxes need to be planned into cash flow).
A few critical operational notes: 1. **Open a separate savings account for tax money.** Move 25–35% of every payment received into it immediately. Don't touch it until quarterly due dates. This is the single most effective behavioral practice for freelancers. 2. **Use IRS Direct Pay or EFTPS for quarterly payments.** Both are free, traceable, and provide instant confirmation. Mailing checks invites loss and timing issues. 3. **Keep receipts and mileage logs.** Tax-deductible business expenses reduce both your SE tax and your income tax — the actual tax savings on every legitimate deduction is roughly 30% for typical freelancers (SE tax + marginal income tax). 4. **Consider an LLC or S-corp structure** if your net SE income exceeds ~$60K/year. S-corp election can save thousands annually by allowing you to pay yourself a reasonable salary (subject to SE tax) and take additional profit as distributions (not subject to SE tax). Talk to a CPA — the savings can be significant, but the administrative burden is real.
State tax handling varies. Most states require their own quarterly payments at similar deadlines; some (FL, TX, WA, TN, NV, SD, WY, AK) have no income tax. Always check your state's specific rules — being on top of federal but late on state still triggers penalties.
Calculate self-employment tax (Schedule SE) including Social Security and Medicare.
Estimate your federal income tax using current brackets and deductions.
Calculate your actual take-home pay from a side hustle after self-employment and income taxes.
Calculate take-home pay after federal, state, and FICA taxes.
Calculate sales tax on any purchase amount.
Convert annual salary to hourly rate and see all pay period breakdowns.
Total 1099 income before expenses
Deductible expenses (supplies, mileage, home office, etc.)
Income from a regular job (taxes already withheld)
Quarterly Payment
$2,312.07
110% of This Estimate (cushion)
$2,543.28
Self-Employment Tax
$6,358.30
Federal Income Tax
$2,890.00
Total Annual Tax
$9,248.30
Monthly Set-Aside
$770.69