Smart calculators for independent professionals
Calculate how much to pay in quarterly estimated taxes as a freelancer or self-employed worker.
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The IRS expects freelancers to pay taxes quarterly — not just at tax time. Miss a payment or underpay, and you'll owe penalties plus interest. This calculator shows your total annual tax liability and divides it into four equal quarterly payments so you can set up auto-transfers and never worry about it.
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Quarterly estimates work best when you stop treating them like a separate tax season. The simplest system is to skim 25-35% from each payment into a tax account, reconcile books monthly, and then compare the reserve to your current estimate before each deadline. If you do that consistently, April, June, September, and January become routine instead of stressful.
Safe-harbor rules matter because perfect forecasting is not required. If your income is stable, paying 100% of prior-year tax or 90% of current-year tax usually keeps penalties away, which is often good enough for a growing freelancer. If income is lumpy, it may be worth discussing the annualized income method with a tax professional so you are not overpaying early quarters just to stay safe.
Operational discipline matters more than payment mechanics. IRS Direct Pay, EFTPS, and state portals all work, but none of them solve the real problem if the cash is not there when the deadline arrives. A dedicated tax reserve and a recurring calendar reminder do more for most freelancers than any spreadsheet model ever will.
For the 2026 tax year: Q1 (Jan–Mar) due April 15, 2026; Q2 (Apr–May) due June 15, 2026; Q3 (Jun–Aug) due September 15, 2026; Q4 (Sep–Dec) due January 15, 2027. These dates shift to the next business day if they fall on a weekend or holiday.
The IRS offers several methods: IRS Direct Pay (free, from your bank account), EFTPS (Electronic Federal Tax Payment System), credit/debit card (fees apply), or mail a check with Form 1040-ES. Direct Pay at irs.gov is the easiest — no enrollment required.
The IRS charges an underpayment penalty calculated on the amount and days late. As of 2026, the underpayment penalty rate is approximately 8% annually. The penalty applies quarter-by-quarter, so even paying late is better than not paying at all. You can avoid all penalties by paying 100% of prior-year tax or 90% of current-year tax.
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Disclaimer
This calculator provides estimates for planning purposes only. It uses projected 2026 federal tax brackets and standard deductions. State tax is approximated using a flat rate. Your actual tax obligations depend on your specific situation, deductions, credits, and jurisdiction. Consult a tax professional for personalized advice.