Tax

Self-Employment Tax Explained: The 15.3% You Pay When You Work for Yourself (2026)

Brian's ClearValue Lending Team · July 10, 2026 · 8 min read

TL;DR

Self-employment tax is a 15.3% federal levy — 12.4% Social Security plus 2.9% Medicare — paid entirely by freelancers, independent contractors, and sole proprietors. Unlike W-2 employees, where the employer covers half, self-employed workers pay both halves. It applies to net earnings above $400, calculated on 92.35% of net self-employment income, filed on Schedule SE. You can deduct half of SE tax above the line on Form 1040 to offset ordinary income tax.

15.3%

SE tax rate

12.4% Social Security + 2.9% Medicare — paid entirely by the self-employed worker

92.35%

Net earnings multiplier

You pay SE tax on this share of net profit, not 100%, to approximate the W-2 employer-side treatment

$400

SE tax threshold

Minimum net self-employment earnings that trigger SE tax for the year

50%

Above-the-line deduction

Half of SE tax is deductible on Form 1040, reducing ordinary taxable income

Key takeaways

Self-employment tax is 15.3% — 12.4% Social Security and 2.9% Medicare — paid fully by self-employed workers with no employer splitting the cost.
SE tax applies to net earnings of $400 or more, calculated on 92.35% of net self-employment income (not 100%) to mirror the W-2 employer-side treatment.
You can deduct exactly half of SE tax as an above-the-line adjustment on Form 1040 — this reduces your ordinary income tax even if you take the standard deduction.
Quarterly estimated tax payments (April, June, September, January) prevent the IRS underpayment penalty when SE tax plus income tax will exceed $1,000.
An S-corp election is the most effective SE tax reduction strategy once net profit consistently clears roughly $60,000–$80,000, because S-corp distributions are not subject to SE tax.

What Is Self-Employment Tax — and Why Does It Exist?

If you've worked a W-2 job, you've seen two deductions on every pay stub: Social Security and Medicare. What those stubs don't show is that your employer paid an identical amount alongside you — half from your check, half from the company's own funds.

When you work for yourself, there is no employer. You pay both halves. That is self-employment tax.

The IRS Self-Employed Individuals Tax Center defines SE tax as the combined Social Security and Medicare contribution required from anyone with net self-employment income of $400 or more in a tax year. The total rate is 15.3%:

12.4% for Social Security (up to the annual wage base)
2.9% for Medicare (no cap)

Who Pays Self-Employment Tax

SE tax applies to:

Freelancers and independent contractors receiving 1099-NEC income
Sole proprietors filing Schedule C
Single-member LLC owners not taxed as an S-corp or C-corp
Partners receiving guaranteed payments from a partnership
Gig workers (rideshare, delivery, short-term rentals) with net earnings above $400

It does not apply to:

S-corp shareholders on profit distributions (only on their salary/reasonable compensation)
Passive rental income reported on Schedule E
W-2 wages (employer already withheld payroll taxes)

How to Calculate SE Tax

The calculation has one important quirk: you don't pay 15.3% on 100% of net profit. You pay it on 92.35% of net self-employment earnings. The IRS calls this "net earnings from self-employment." The 7.65% subtraction exists because if you were a W-2 employee, the employer's share of payroll taxes wouldn't appear in your taxable wages — this arithmetic approximates the same treatment.

Step-by-step example:

A freelance consultant earns $90,000 in revenue and has $15,000 in deductible business expenses.

Net Schedule C profit: $75,000
× 92.35%: $69,263 (net earnings from self-employment)
× 15.3%: SE tax = $10,597

File Schedule SE with your annual return and carry the SE tax total to Form 1040, Schedule 2.

Social Security wage base: The 12.4% Social Security portion only applies to earnings up to an annual ceiling the Social Security Administration adjusts each year for inflation. The 2.9% Medicare portion has no cap.

The Additional Medicare Tax

High earners face an extra layer: a 0.9% Additional Medicare Tax under the Affordable Care Act, applied to earned income — including self-employment income — above:

$200,000 for single and head-of-household filers
$250,000 for married filing jointly
$125,000 for married filing separately

This surtax is calculated on total wages plus net self-employment income combined. IRS Publication 334 has the full calculation methodology in the SE tax section.

The Deduction for Half of SE Tax

Here is the relief: the IRS lets you deduct 50% of SE tax as an adjustment to income on Form 1040 (Schedule 1, Part II, Line 15). This is an above-the-line deduction — you get it whether you itemize or take the standard deduction.

In the example above: half of $10,597 = $5,299 reduction in gross income, directly lowering your income tax bill. The deduction doesn't reduce SE tax itself, but it offsets part of the sting.

When You Pay SE Tax

SE tax and income tax follow the same payment schedule. For most self-employed workers, that means quarterly estimated payments — not one annual payment in April.

The IRS assesses an underpayment penalty if you owe more than $1,000 when you file and haven't made sufficient quarterly payments throughout the year. The safe-harbor thresholds: pay either 90% of the current year's total tax or 100% of last year's total tax (110% if prior-year AGI exceeded $150,000).

Quarterly due dates: April 15, June 16, September 15, and January 15 of the following year. See Quarterly Estimated Taxes in 2026: Deadlines, Safe Harbors, and How to Pay for the full payment mechanics.

Three Legal Ways to Reduce SE Tax

1. Maximize business deductions. SE tax is computed on net Schedule C profit. Every legitimate deduction — the home office deduction, business vehicle use, equipment, software subscriptions, professional development — reduces the base. A $5,000 deduction at a 15.3% SE tax rate saves $765 in SE tax alone, before the income tax benefit.

2. Fund a self-employed retirement plan. SEP-IRA, Solo 401(k), and SIMPLE IRA contributions reduce ordinary income tax, though they don't directly reduce SE tax (contributions come from income after SE tax is calculated). They are still a powerful tax shelter for high-income self-employed workers. See Retirement Plans for the Self-Employed: SEP-IRA, Solo 401(k), and SIMPLE IRA for 2026 contribution limits.

3. Elect S-corp taxation. Once net profit consistently exceeds roughly $60,000–$80,000 per year, electing S-corp status for an LLC (or forming an S-corp) lets you split income into salary (subject to payroll taxes) and distributions (not subject to SE tax). The trade-off is payroll complexity and added filing costs. The break-even math depends on your SE tax savings versus the cost of running payroll and filing a corporate return. See How to Form an S-Corp: What It Costs and What It Does to Your Funding Applications for a practical breakdown.

For a broader look at how your business structure and tax picture interact with lender underwriting, Sole Proprietorship Taxes for Funding Applications walks through how bank statement underwriting reads Schedule C income and SE tax obligations.

This article is educational. For tax advice specific to your situation, consult a licensed CPA or enrolled agent.

Sources & citations

IRS Self-Employed Individuals Tax Center — Authoritative IRS landing page for SE tax obligations, Schedule SE filing, and estimated payment guidance
IRS Schedule SE (Form 1040) — The official form and instructions for calculating self-employment tax
IRS Publication 334 — Tax Guide for Small Business — Covers SE tax calculation, the half-of-SE-tax deduction, and Additional Medicare Tax rules
SSA Contribution and Benefit Base — Annual Social Security wage base used for the 12.4% SE tax cap — updated each fall

Frequently asked

Questions readers ask

Do I owe self-employment tax if I only earned $300 freelancing this year? +

No. The threshold is $400 in net self-employment earnings for the year. If your net income from freelancing or contracting — after business expenses — is below $400, SE tax does not apply for that tax year.

Does rental income count as self-employment income? +

Generally no. Rental income reported on Schedule E is not subject to self-employment tax unless you provide substantial services to tenants — like a hotel, bed-and-breakfast, or short-term rental operation where you actively manage cleaning, meals, or concierge services. Standard landlord activities are passive income.

Can I deduct self-employed health insurance premiums to reduce my SE tax? +

Self-employed health insurance premiums reduce your adjusted gross income as an above-the-line deduction, lowering your ordinary income tax. However, they do not reduce the SE tax calculation itself — SE tax is computed from Schedule C net profit before the health insurance deduction is applied.

If I form an LLC, do I still pay self-employment tax? +

Yes, for a single-member LLC taxed as a disregarded entity (the IRS default). The IRS treats your LLC income as sole-proprietor income on Schedule C, fully subject to SE tax. To change the treatment, you would need to elect S-corp or C-corp taxation, which shifts some income out of the SE tax base.

What is the Social Security wage base for self-employment tax? +

The Social Security portion of SE tax (12.4%) only applies up to an annual earnings cap that the Social Security Administration adjusts each year for inflation. The Medicare portion (2.9%) has no cap. Visit the SSA wage base page at ssa.gov to confirm the current year's ceiling.

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