Free Estimated Tax Calculator for Freelancers

Type your numbers. The calculator estimates your self-employment tax and four equal estimated payments using the safe harbor rule. It runs in your browser only. Nothing is sent or saved.

Your numbers

Last year's total tax (federal income tax + SE tax)From last year's return. Enter 0 for your first year. Last year's adjusted gross income (AGI)Line 11 of last year's Form 1040. Your estimate of this year's income tax after credits, excluding SE taxYour own estimate (federal + state). Use Form 1040-ES or a tax professional. Social Security wage base for this yearFrom ssa.gov. Enter 0 for no cap. W-2 wages already subject to Social Security taxEnter 0 if you have no W-2 job. Net business profit for the year (income minus business expenses)

Result

Earnings subject to SE tax (profit x 92.35%)
Estimated self-employment tax
Estimated total tax this year
Required annual payment (safe harbor)
Each of the four payments

Due date	Covers income from	Amount
April 15, 2026	Jan 1 to Mar 31, 2026
June 15, 2026	Apr 1 to May 31, 2026
September 15, 2026	Jun 1 to Aug 31, 2026
January 15, 2027	Sep 1 to Dec 31, 2026

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The paid kit adds an Excel and Google Sheets workbook with a payment log, a printable step-by-step guide, and checks for the 110 percent rule and the Social Security cap.

Get the Freelancer Estimated Tax Planner ($12)

This is a rough worksheet, not tax advice. It leaves out deductions, credits, the half-SE-tax deduction and state rules. Check the current IRS Form 1040-ES instructions and your state rules before you pay. Made with AI assistance and checked by a person before release.