1099 & Self-Employment Tax Calculator 2026

How Self-Employment Tax Works in 2026

If you're a freelancer, independent contractor, gig worker, or sole proprietor who received 1099 income, you're responsible for paying self-employment (SE) tax in addition to regular federal and state income taxes. The SE tax covers Social Security and Medicare contributions that would normally be split between you and an employer.

2026 Self-Employment Tax Rate

The self-employment tax rate is 15.3% — made up of 12.4% for Social Security and 2.9% for Medicare. This is calculated on 92.35% of your net self-employment earnings. For 2026, the Social Security wage base is $176,100, meaning you only pay the 12.4% Social Security portion on earnings up to that amount. The 2.9% Medicare tax applies to all earnings with no cap, and an additional 0.9% Medicare surtax applies to earnings above $200,000 (single) or $250,000 (married filing jointly).

Key Deductions for Self-Employed Workers

Self-employed individuals can deduct half of their SE tax from their adjusted gross income, which reduces their income tax. Other important deductions include the standard mileage deduction ($0.70/mile for 2026), home office deduction (simplified method: $5/sq ft up to 300 sq ft), self-employed health insurance premiums, and retirement contributions to SEP-IRAs or Solo 401(k) plans. The Qualified Business Income (QBI) deduction allows eligible self-employed workers to deduct up to 20% of their qualified business income.

Quarterly Estimated Tax Payments

Since no employer withholds taxes from your 1099 income, you're generally required to make quarterly estimated tax payments to the IRS using Form 1040-ES. Missing these payments may result in underpayment penalties. The quarterly due dates for the 2026 tax year are April 15, June 15, September 15, and January 15 (2027).