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Self Employment Tax Calculator for 2026

Estimate the Social Security and Medicare tax on your business or 1099 income.

QBQuick Bookkeeping & Tax ServicesAccounting & tax team, Ashburn, VA Updated ·Free tool

If you work for yourself, you pay both the employee and employer share of Social Security and Medicare. Enter your numbers below for a quick 2026 estimate.

Calculate your self employment tax

Income minus business expenses, from your Schedule C or K-1.
Only affects the 0.9% Medicare tax for high earners.
Self employment tax only. This estimate covers Social Security and Medicare. It does not include federal or Virginia income tax, which you will owe on top of this.
Net earnings subject to tax (92.35%)$0
Social Security portion (12.4%)$0
Medicare portion (2.9%)$0
Estimated self employment tax$0
Additional Medicare tax (high earners only)$0
Quarterly set aside for these taxes$0
Deduction for half of self employment tax$0

Enter your net profit to see your estimate. Uses 2026 rates and the $184,500 Social Security wage base.

How self employment tax works

  • Self employment tax is 15.3% of net earnings: 12.4% for Social Security and 2.9% for Medicare
  • It applies to 92.35% of your net profit, which mirrors the employer half of payroll tax
  • Social Security tax stops at the 2026 wage base of $184,500, which includes any W-2 wages
  • An extra 0.9% Medicare tax applies above $200,000 for single and head of household filers, $250,000 for joint filers and $125,000 for married filing separately. It is figured separately on Form 8959
  • You can deduct half of your self employment tax when figuring income tax
  • You generally owe it once net earnings reach $400

Ways to lower it

  • Make sure every legitimate business expense is recorded, since the tax is based on profit
  • If your profit is steady and high enough, an S corp election can reduce self employment tax
  • Retirement contributions do not reduce self employment tax, but they do lower income tax

Read our guide to LLC vs S corp in Virginia for an example.

Paying it during the year

Self employment tax is paid along with income tax through quarterly estimated payments. This calculator does not include federal or Virginia income tax, so your total payments will be higher.

About this calculator

This is an estimate for planning only and is not tax advice. Your actual tax depends on your full return.

This article is general information and not tax advice for your situation. Tax rules change, so talk with a qualified professional before making decisions.