Handbook / Self-employment tax and 1099s

The self-employment tax deduction for the 2026 tax year, explained

Tax-year note: Tax information on this page applies to the 2026 tax year (returns filed in 2027), from IRS pages checked in November 2026. Figures and dates are labelled with their tax year where they appear. Check current IRS pages before you rely on them.

Self-employment tax is one of the biggest surprises for new freelancers and business owners. The good news is that part of it is deductible. This guide explains the self-employment tax deduction for the 2026 tax year: what it is, why it exists, how it is figured and what it does and does not reduce.

Why the deduction exists

When you are an employee, Social Security and Medicare taxes are split: you pay half through withholding, and your employer pays the other half. Your employer can deduct its share as a business expense.

When you are self-employed, you pay both halves through self-employment tax. To put you in a position similar to an employer, the tax rules let you deduct the employer-equivalent portion. The IRS says you can deduct the employer-equivalent portion of your SE tax when calculating your adjusted gross income, and that wage earners cannot deduct Social Security and Medicare taxes.

The 2026 figures behind it

The IRS explains:

• the self-employment tax rate is 15.3%
• this is made up of 12.4% for Social Security and 2.9% for Medicare
• for 2026, the first $184,500 of combined wages, tips and net earnings is subject to the Social Security part
• the Medicare part applies to all net earnings

Earlier guides on this site explain that Schedule SE generally starts from 92.35% of your net profit, and that you usually owe SE tax only if net earnings from self-employment are $400 or more. See Schedule SE for the line-by-line calculation.

How the deduction is figured

You do not calculate the deduction separately from scratch. Schedule SE works out your total self-employment tax on line 12 and then the deduction on line 13, which is 50% of line 12. The 2026 Schedule SE tells you to enter the line 13 amount on Schedule 1 (Form 1040), line 15, in the adjustments to income section.

In outline:

1. Figure your net profit on Schedule C.
2. Complete Schedule SE to find your SE tax.
3. Take the deduction amount from Schedule SE, which is half of the SE tax.
4. Enter it on Schedule 1 as an adjustment to income.

Tax software does this automatically, but it helps to know where the number comes from.

What it reduces, and what it does not

The deduction lowers your adjusted gross income, which reduces the income tax you owe. It can also affect other calculations that depend on AGI.

It does not reduce:

• your self-employment tax, which is figured on Schedule SE before this deduction
• your Schedule C net profit

Because it is an adjustment to income, you can claim it whether you take the standard deduction or itemize.

A plain example without numbers

Imagine two people with the same total earnings: one is an employee and one is self-employed. The employee pays half of Social Security and Medicare through withholding; the employer pays the other half and deducts it. The self-employed person pays both halves through SE tax, then deducts half when figuring AGI. That deduction is what narrows the gap between them for income tax purposes.

Where the Social Security cap fits

If you also have wages, the Social Security part of SE tax applies only to the extent your combined wages and net earnings are below the 2026 limit of $184,500. The IRS explains that if wages and tips subject to Social Security tax total at least that amount, you do not pay the 12.4% Social Security part on self-employment earnings. Schedule SE handles this, and your deduction reflects the SE tax actually figured.

Additional Medicare Tax is different

The deduction applies to self-employment tax. Additional Medicare Tax on higher earnings is a separate calculation. See additional Medicare tax.

Planning your estimated payments

When you estimate your 2026 tax, include both your SE tax and the effect of the deduction on income tax. The guide to how much to set aside and Form 1040-ES explain how to plan payments.

Records

Keep your Schedule SE, Schedule C and supporting records with your return. If you use tax software, check that the deduction appears on Schedule 1.

For the 2026 tax year, self-employed people deduct the employer-equivalent half of their SE tax, figured on Schedule SE, as an adjustment to income on Schedule 1; it lowers income tax and AGI but not the SE tax itself.