Self-Employment Tax Rate (2026): 15.3% Explained
Self-employment tax rate is 15.3% in 2026: 12.4% Social Security + 2.9% Medicare. The Social Security portion caps at the $184,500 wage base; the Medicare portion is uncapped. High earners pay an extra 0.9% Additional Medicare on income above $200,000 single / $250,000 MFJ. This guide breaks down what the rate actually means, how to compute it, and how to legally reduce it.
The 15.3% breakdown
- Social Security (12.4%): on net SE income up to $184,500 wage base (TY 2026)
- Medicare (2.9%): on all net SE income, no cap
- Additional Medicare (0.9%): on net SE income above $200k single / $250k MFJ / $200k HoH per IRC §1401(b)(2)
The 0.9235 SE factor
Self-employed taxpayers don't pay SE tax on 100% of their net SE income — they pay it on 92.35%. The 7.65% exclusion mirrors the FICA employer match a W-2 employer would pay on a wage. Per IRC §1402(a)(12), the math is:
SE tax = (net SE × 0.9235) × 15.3%
Concrete example: $50,000 net SE income, single
- Taxable SE base: $50,000 × 0.9235 = $46,175
- Social Security portion: $46,175 × 12.4% = $5,726
- Medicare portion: $46,175 × 2.9% = $1,339
- Additional Medicare: $0 (under $200k threshold)
- Total SE tax: $7,065
- Half-SE deduction: $3,532 (above-the-line, reduces AGI)
SE tax vs FICA — same rate, different label
A W-2 employee pays 7.65% FICA from their paycheck (6.2% SS + 1.45% Medicare); the employer pays a matching 7.65% on the employee's behalf. Combined: 15.3% — identical to SE tax.
The IRS treats self-employed taxpayers as both employer and employee, so you pay both halves. The 0.9235 SE factor is the only adjustment: it excludes the "employer match" amount from the SE base (because as an employer, you don't include your own match in your own taxable wage).
The half-SE deduction
You can deduct 50% of your SE tax as an above-the-line adjustment to AGI on Form 1040 Line 15. This reduces:
- Federal income tax (the deduction lowers your taxable income)
- Most states' income tax (states that conform to federal AGI — most do; PA + NJ don't)
- QBI threshold positioning (lower AGI = more likely to fall under the QBI phase-in cutoff)
- IRA contribution eligibility, education credit phase-outs, and other AGI-driven phase-outs
It does NOT reduce the SE tax itself — you still owe the full 15.3% on net SE income. The deduction shifts other taxes only.
2026 boundary cases
- Net SE income at or below $400: no SE tax owed (per IRC §1402(b))
- Net SE income exactly at $184,500 wage base: SS portion = $184,500 × 0.9235 × 12.4% = $21,121; Medicare adds 2.9%
- Net SE income above $184,500 but below $200k: only 2.9% Medicare on the excess (no Additional Medicare yet)
- Net SE income at $200,000 single (Additional Medicare threshold): 0% Additional Medicare exactly at threshold
- Net SE income at $250,000 single: Additional Medicare = ($250,000 − $200,000) × 0.9% = $450
Three legal ways to reduce SE tax
1. Maximize business deductions (the biggest lever)
SE tax applies to NET SE income — gross minus business expenses. Every legitimate deduction reduces both federal income tax AND SE tax. For each $1,000 of deductions, you save:
- $153 in SE tax (15.3%)
- + federal income tax at your marginal rate (10-37%)
- + state income tax (varies)
Combined savings: typically 25-50% of the deduction. Freelancer deductions checklist.
2. Elect S-corp status (the next-biggest lever, at higher income)
S-corp shareholders only pay payroll tax on the "reasonable salary" portion of their profit; the rest is distributions and escapes the 15.3%. Example with $150,000 profit:
- Sole prop: 15.3% × 0.9235 × $150,000 = $21,200 SE tax
- S-corp ($80,000 salary, $70,000 distribution): 15.3% × $80,000 = $12,240 payroll tax
- Annual savings: ~$9,000
Trade-offs: extra accounting cost ($1-2k/yr), separate corp tax return (Form 1120-S), reasonable-salary IRS scrutiny. Generally worth it above $80-100k profit. Full S-corp guide.
3. Above-the-line retirement deductions
Solo 401(k) and SEP-IRA contributions reduce AGI but DON'T reduce SE tax (because the SE-tax base is computed before AGI adjustments). Net effect: federal + state income tax savings, but the 15.3% SE tax still applies to the full pre-retirement net SE income.
Exception: a SEP-IRA contribution at the individual level (not through the corp) reduces SS coverage — not directly SE tax — but matters for high earners maxing the SS wage base.
What SE tax doesn't apply to
- W-2 wages (FICA already covered by withholding)
- S-corp distributions (only salary is subject)
- C-corp dividends
- Rental income (Schedule E — usually passive, not subject to SE tax; exception: real-estate professionals)
- Investment income (dividends, capital gains, interest) — subject to NIIT instead, not SE tax
- Royalties (typically Schedule E unless you're a writer/inventor in the trade)
- Net SE income under $400 (de minimis exemption)
- Some K-1 distributive shares (LLCs taxed as partnerships have nuanced rules)
SE tax vs payroll tax — quick comparison table
| Aspect | SE tax (sole prop / Schedule C) | Payroll tax (S-corp salary / W-2) |
|---|---|---|
| Combined rate | 15.3% on 92.35% of net SE | 15.3% on 100% of wage |
| Effective rate on raw $ | 14.13% (15.3% × 0.9235) | 15.3% |
| SS wage base 2026 | $184,500 | $184,500 |
| Half-of-tax deduction | Yes (above the line) | No |
| Distributions exempt? | Doesn't apply | Yes — only salary subject |
| Form filed | Schedule SE (with Form 1040) | Form 941 quarterly + W-2 annual |
Related guides + tools
- SE tax explained — full mechanics + examples
- S-corp election guide
- Schedule C basics for freelancers
- Deductions checklist (reduce SE base)
- QBI 20% deduction (separate from SE tax)
- Payroll tax calculator (S-corp salary planning)
- Tax estimator (homepage calculator)
Estimates only — not tax, legal, or financial advice. Sources: IRC §1401, §1402(a)(12), §1402(b), IRS Schedule SE instructions (TY 2026), IRS Notice 2025-67 (TY 2026 wage base $184,500), IRS Publication 334 (Tax Guide for Small Business). For decisions affecting your finances, consult a licensed CPA or enrolled agent.