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HOW-TO GUIDE
2026 TAX YEAR
IRS-ACCURATE

How to Calculate Self-Employment Tax in 2026 (Step-by-Step with Examples)

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Table of Contents

What is self-employment tax?

Self-employment (SE) tax is how the IRS collects Social Security and Medicare contributions from people who work for themselves. When you’re an employee, your employer pays half of these taxes on your behalf. When you’re self-employed — freelancer, contractor, gig worker, sole proprietor — you pay both halves yourself.

 

The combined rate is 15.3%: 12.4% for Social Security (up to the wage base) and 2.9% for Medicare on all net earnings. That’s the top-level number. The actual calculation has four steps — and a couple of quirks that lower your bill if you know about them.

 

ComponentRate2026 Limit
Social Security12.4%Up to $184,500
Medicare2.9%No limit
Additional Medicare0.9%Over $200k (single filers)
Total SE rate15.3%—
Net earnings factor92.35%—
Minimum income threshold—$400

Do you owe SE tax?

If your net self-employment income is $400 or more in 2026, you are required to calculate and pay SE tax by filing Schedule SE with your Form 1040. This applies even if you also hold a W-2 job.

Learn what you owe in 1 minute

Step 1 - Calculate your net earnings (revenue minus deductible expenses)

Net Earnings = Gross Revenue − Deductible Business Expenses

Self-employment tax is calculated on your net profit, not your gross income. Every dollar of legitimate business expense you subtract reduces both your SE tax and your income tax.

Net Earnings = Gross Revenue − Business Expenses

Common deductible expenses to capture:

  • Home office (dedicated space, proportional rent or mortgage interest)
  • Internet and phone - business-use portion
  • Software subscriptions (Figma, Notion, QuickBooks, Adobe CC, etc.)
  • Mileage & vehicle expenses (67 cents/mile for 2024 carryover; track every trip)
  • Equipment and hardware you bought for work
  • Professional development, courses, and books
  • Advertising, marketing, and contractor fees you paid out
  • Health insurance premiums (if not eligible for employer coverage)
  • Bank fees and payment processing fees on business accounts

Keep receipts. The IRS expects documentation for everything you deduct – a shoebox of photos on your phone counts as long as they’re legible and dated.

Step 2 - Apply the 92.35% adjustment

Here’s the quirk most freelancers don’t know about. The IRS does not apply the 15.3% rate to 100% of your net earnings. You multiply by 92.35% first. Why?

 

When you’re self-employed, you’re both the employee and the employer. An employer’s share of FICA (7.65%) is tax-deductible as a business expense. Since you don’t have a separate employer paying that, the IRS lets you deduct half of SE tax as a proxy. The 92.35% adjustment (i.e., 100% − 7.65%) is just the math shortcut that achieves the same result on Schedule SE — you’re essentially backing out the employer-equivalent portion before calculating the base.

Net SE Earnings = Net Earnings × 0.9235

Example: $80,000 net × 0.9235 = $73,880 taxable SE base

Dont't wanna waste time? Try our calculator

Step 3 - Apply the 15.3% rate (with the Social Security wage cap in mind)

SE Tax = Net SE Earnings × 15.3% (up to $184,500 SS wage base)

Apply 15.3% to the number from Step 2. Most freelancers and contractors stop here – this is their full SE tax bill.

 SE Tax = Net SE Earnings × 0.153

The Social Security wage cap matters if you earn above $184,500. For 2026, the Social Security wage base is $184,500. Social Security tax (12.4%) only applies up to that amount. Medicare (2.9%) applies to all earnings without a cap. And if your net income exceeds $200,000 (single filer) or $250,000 (married filing jointly), an additional 0.9% Medicare surtax kicks in on the excess.

Earnings range (single)Rate applied
$0 – $184,50015.3% (SS + Medicare)
$184,501 – $200,0002.9% (Medicare only)
Over $200,0003.8% (2.9% + 0.9% Additional Medicare)

Step 4 - Claim the 50% SE tax deduction to reduce your income tax

Once you know your SE tax, you get to deduct half of it from your gross income when calculating your federal income tax. This deduction is taken on Form 1040 as an “above-the-line” deduction – meaning it lowers your Adjusted Gross Income (AGI) whether you itemize or take the standard deduction.

SE Tax Deduction = SE Tax ÷ 2

Example: $11,304 SE tax ÷ 2 = $5,652 deduction off your AGI

This won’t eliminate your SE tax – it simply reduces the income tax you owe on top of it. Think of it as the IRS acknowledging that you paid both sides of FICA and giving you partial credit for the employer half.

3 Worked examples (2026 Rates)

Here are three scenarios that cover the most common income ranges for self-employed workers. All figures use 2026 IRS rates and the Social Security wage base of $184,500.

Example 1 · Gig Worker

$30,000 gross gig income (DoorDash / Uber driver)

Gross gig income
$30,000
Less: business expenses (phone, mileage, etc.)
− $4,200
Step 1 – Net earnings
$25,800
Step 2 – × 92.35%
$23,826
Step 3 – × 15.3%
$3,645
✦ Self-employment tax owed
$3,645
Step 4 – 50% deduction off AGI
– $1,823

This driver’s effective SE tax rate on gross gig income is about 12.2% – expenses and the 92.35% adjustment make a real difference

Example 2 · Freelancer

$75,000 gross freelance income (consultant / designer)

Gross freelance income
$75,000
Less: business expenses (software, home office, etc.)
− $8,500
Step 1 – Net earnings
$66,500
Step 2 – × 92.35%
$61,413
Step 3 – × 15.3%
$9,396
✦ Self-employment tax owed
$9,396
Step 4 – 50% deduction off AGI

− $4,698

A SEP-IRA contribution here (up to ~$12,500 of net SE income) could further reduce income tax owed on top of SE tax.

Example 3 · Sole Proprietor

$120,000 gross sole proprietor income

Gross business income
$120,000
Less: business expenses (salaries paid, supplies, office)

– $22,000

Step 1 – Net earnings
$98,000
Step 2 – × 92.35%
$75,000
Step 3 – × 15.3%
$13,847
✦ Self-employment tax owed
$13,847
Step 4 – 50% deduction off AGI

– $6,924

Well below the $184,500 SS wage cap, so the full 15.3% applies to all net SE earnings. The 50% deduction saves roughly $1,800–$2,200 in income tax depending on filing status.

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