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

Worked SE-tax examples at common income levels

Three scenarios using 2026 figures (single filer, before deductions):

$30,000 net SE income (side hustle / part-time).

• Taxable SE base: $30,000 × 0.9235 = $27,705
• SS portion: $27,705 × 0.124 = $3,435
• Medicare portion: $27,705 × 0.029 = $803
• Total SE tax: $4,238
• Half-SE deduction (reduces AGI): $2,119

$80,000 net SE income (typical full-time freelancer).

• Taxable SE base: $80,000 × 0.9235 = $73,880
• SS portion: $73,880 × 0.124 = $9,161 (under wage base cap)
• Medicare portion: $73,880 × 0.029 = $2,143
• Total SE tax: $11,304
• Half-SE deduction: $5,652

$220,000 net SE income (above SS wage base).

• Taxable SE base: $220,000 × 0.9235 = $203,170
• SS portion: $184,500 × 0.124 = $22,878 (capped at wage base)
• Medicare portion: $203,170 × 0.029 = $5,892
• Additional Medicare: ($203,170 - $200,000) × 0.009 = $29
• Total SE tax: $28,799
• Half-SE deduction: $14,400 (only the regular SE tax half; Additional Medicare doesn't get the deduction)

Notice how the effective rate drops as income exceeds the SS wage base — beyond $184,500 net SE base, only the 2.9% Medicare portion applies. This is why high earners often consider S-corp election: at low-to-moderate income, the SE-tax savings are smaller; at high income above the wage base, the savings opportunity is concentrated in the Medicare-only portion (less leverage).

Second example — $80k single, line-by-line Schedule SE walkthrough

The aggregated $80k numbers above abstract over the actual Schedule SE form. Here's the same scenario walked through line by line as the IRS form will compute it, so you can match each figure to a specific line on the return:

• Schedule SE Line 2: Net SE earnings carried over from Schedule C Line 31 → $80,000
• Schedule SE Line 4a: Line 2 × 0.9235 (the SE-factor adjustment) → $73,880 taxable SE income
• Schedule SE Line 10: Social Security portion = $73,880 × 0.124 = $9,161 (under the $184,500 wage base, so the full amount is subject to SS)
• Schedule SE Line 11: Medicare portion = $73,880 × 0.029 = $2,143
• Schedule SE Line 12: Total SE tax (Line 10 + Line 11) = $11,304 — flows to Schedule 2 Line 4 of Form 1040
• Schedule SE Line 13 / Schedule 1 Line 15: Half-SE deduction = $11,304 ÷ 2 = $5,652, taken above the line so it reduces AGI directly

Net cost analysis: the raw SE tax bill is $11,304, but the half-SE deduction lowers AGI by $5,652. At the 22% federal bracket that single filers hit on income in this range, the AGI reduction trims federal income tax by roughly $1,243. The true after-deduction cost of SE tax on $80,000 net SE income is therefore approximately $10,061 — about 12.6% of net SE profit, not the headline 15.3%. State income tax adjustments (if your state conforms to federal AGI) typically shave another $150-400 off depending on the bracket.

Frequently asked questions

I have W-2 income AND 1099 income. How does the SS wage base cap work?
Your W-2 wages count first against the $184,500 cap. If your W-2 already maxed it, your SE income owes ONLY the Medicare portion (2.9% on full SE base, plus 0.9% Additional Medicare over $200k). Schedule SE Part II handles the coordination — it asks for your W-2 SS wages and reduces the SE wage-base-cap accordingly.

Do I owe SE tax in the year I file an extension?
Yes — extensions only extend the FILING deadline, not the PAYMENT deadline. SE tax is owed by April 15 regardless of when you file Form 1040. Interest accrues on unpaid SE tax from April 15 forward, even with a valid extension.

What if I overpaid SE tax via excess quarterly estimates?
Overpayment reconciles on Form 1040 — your total tax liability (income tax + SE tax + Additional Medicare) gets compared to your total payments (withholding + quarterlies). Excess generates a refund or rolls forward to next year's first quarterly payment.

Does SE tax apply to passive rental income?
Generally no. Rental real estate income on Schedule E is NOT subject to SE tax (unless you're a "real estate professional" providing substantial services to tenants, like a hotel-style short-term rental with daily cleaning, breakfast, concierge — which then gets reclassified). Most landlords escape SE tax entirely on rental income.

Can I "elect out" of SE tax if I don't want SS benefits?
No, with rare exceptions. Members of certain religious sects (Amish, Mennonite) can file Form 4029 to opt out. Ministers can file Form 4361 for ministerial earnings. Beyond those narrow cases, SE tax is mandatory for self-employment earnings.

Does SE tax apply to a side-hustle Etsy shop under $400?
No. The $400 net SE income threshold is the SE-tax trigger per IRC §6017. Below $400 net, no SE tax is owed and no Schedule SE is required. The income still flows onto Schedule C if the activity is a trade or business, or onto Schedule 1 as hobby income if it isn't pursued for profit. The $400 floor catches a lot of side-hustlers off-guard — it's net, not gross, so a $1,200 Etsy year minus $850 in materials and fees lands you under it.

How does SE tax interact with the QBI deduction?
They don't directly interact, but they're computed on different bases. SE tax is on 92.35% of net SE income. QBI is up to 20% of "qualified business income" — your net SE minus the half-SE deduction, retirement contributions, and SE health insurance premiums. The half-SE deduction (above the line on Schedule 1) reduces your AGI, which then feeds into QBI's taxable-income phase-out threshold. See the QBI deduction calculator for a side-by-side estimate.

If I work a W-2 job and 1099 on the side, does SE tax stack with FICA?
Partially. Social Security caps at the wage base ($184,500 for 2026) — combined W-2 wages and SE income above that threshold don't owe additional 12.4% SS. But Medicare (2.9%) and Additional Medicare (0.9% over the status threshold) stack with no cap. Watch for an SS overpayment refund on Schedule 3 if you cross the wage base from both sources — the IRS doesn't auto-reconcile across employers and your sole-prop SE return.

Why doesn't S-corp salary reduce SE tax to zero?
It does — for the portion paid as W-2. But S-corp shareholders still pay FICA (employee + employer halves combine to 15.3%) on their W-2 salary; the only "savings" is on the K-1 distribution portion that escapes FICA entirely. So you're trading SE tax on the full net for FICA on the salary plus zero on the distribution. Net savings depends on what salary the IRS considers "reasonable" — see the S-corp savings calculator.

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.

This article is for educational purposes only. It is not personalized tax, legal, or financial advice. Quarterly1099 is published by Vincent Roy and is not a CPA, EA, or licensed tax preparer. All content is sourced from IRS publications and current tax law. Fact-checked against IRS publications and 2026 Rev. Proc. 2025-32. For your specific situation, consult a licensed CPA or Enrolled Agent. See our full disclaimer.

Make filing easier

Software that finds tax deductions automatically and saves freelancers hours.

Keeper Tax AI finds missed deductions · $1.2B uncovered · Free trial → Found Banking + tax for self-employed · Auto tax savings → FreshBooks Invoicing, expenses, and reports for freelancers → QuickBooks Self-Employed Mileage tracking, expense capture, quarterly estimates →

Affiliate links — if you sign up through these we may earn a commission, at no extra cost to you.