cpa-tax
FICA vs. Self-Employment Tax Calculator (2025) — W-2 Employee vs. 1099 Contractor
W-2 employees pay 7.65% in FICA (Social Security + Medicare) — the other 7.65% is paid by the employer and invisible to the worker. Self-employed 1099 contractors pay both halves: 15.3% on 92.35% of net earnings. On $80,000 of income, that's roughly $3,000 more in payroll taxes. Half of SE tax is deductible above-the-line, which helps — but doesn't fully close the gap. This calculator shows the exact dollar difference and the SE tax deduction benefit.
Educational estimate using current-year projections — not tax advice. Verify with a CPA against your full return before filing or acting on this output.
How it works
Methodology
Inputs
- Annual income
- Gross W-2 wages OR net Schedule C profit before SE tax deduction.
- Income type toggle
- W-2 employee or self-employed (1099). Determines which formula applies.
Formula
W-2 employee (employee side only): SS tax = min(income, $184,500) × 6.2% Medicare tax = income × 1.45% Additional Medicare = max(0, income − $200,000) × 0.9% Total FICA = SS + Medicare + Additional Medicare Self-employed: SE basis = income × 92.35% SS portion = min(SE basis, $184,500) × 12.4% Medicare portion = SE basis × 2.9% Additional Medicare = max(0, SE basis − $200,000) × 0.9% Gross SE tax = SS + Medicare + Additional Medicare SE deduction = gross SE tax × 50% (above-the-line AGI reduction) Delta = gross SE tax − W-2 total FICA
Assumptions
- W-2 calculation shows employee-side FICA only (employer matches another 7.65% — not included).
- Additional Medicare Tax threshold: $200,000 for single filers (this calculator uses single-filer threshold for both scenarios — MFJ threshold is $250,000).
- 2026 Social Security wage base: $184,500 (SSA official announcement).
- SE deduction (50% of SE tax) is shown as an income-tax benefit — it does not reduce SE tax itself.
- Federal payroll tax only — no state unemployment tax, state disability insurance, or workers compensation.
Worked examples
Rideshare driver — $60K net Schedule C profit
- Annual income
- $60,000
- Income type
- Self-employed (1099)
SE basis $55,410. SE tax ~$8,478 (12.4% SS + 2.9% Medicare). SE deduction ~$4,239 above-the-line. W-2 equivalent would be $4,590 in employee FICA. Extra payroll cost of self-employment: ~$3,888.
Freelancer crossing the SS wage base — $200K
- Annual income
- $200,000
- Income type
- Self-employed (1099)
SE basis $184,700. SS portion capped at $184,500 wage base = $22,878. Medicare full = $5,356. Gross SE tax ~$28,234. W-2 employee side: ~$14,339. Delta ~$13,895 more for self-employed.
Frequently asked
Questions readers ask
Why do self-employed workers pay 15.3% when W-2 employees only pay 7.65%? +
W-2 employees only see half of FICA — their employer matches the other 7.65% as an invisible payroll cost. Self-employed workers are both employer and employee, so they owe both halves: 12.4% Social Security + 2.9% Medicare = 15.3%. This is computed on 92.35% of net SE earnings (not 100%) because the IRS allows you to deduct the employer-equivalent half before calculating the SE tax base — the 92.35% factor is simply 1 minus 7.65%. Source: IRS Schedule SE.
What is the Social Security wage base for 2026? +
The 2026 Social Security wage base is $184,500 — income above this threshold is not subject to the 12.4% Social Security portion of payroll tax, for either W-2 employees or self-employed workers. Only the 2.9% Medicare portion (and the 0.9% Additional Medicare Tax for high earners) applies above that limit. The wage base adjusts annually with the National Average Wage Index; the SSA announces the next year's figure each October.
What is the SE tax deduction and how does it work? +
Self-employed workers can deduct 50% of their SE tax as an above-the-line deduction on Schedule 1 — it reduces Adjusted Gross Income before you reach the standard deduction. This deduction doesn't reduce SE tax itself, but it does lower your federal (and sometimes state) income tax. At a 22% marginal rate, deducting half of a $12,238 SE tax bill saves ~$1,346 in income tax — partially offsetting the extra payroll tax burden vs. W-2.
What is the Additional Medicare Tax? +
The Additional Medicare Tax (ACA, effective 2013) imposes an extra 0.9% Medicare surcharge on wages, self-employment income, and railroad retirement above $200,000 (single filers) or $250,000 (married filing jointly). It's not split with an employer — the employee or self-employed worker pays the full 0.9%. Source: IRS Topic 560.
If I become an S-corp, do I avoid SE tax? +
Partially. S-corp owner-employees pay SE tax only on their W-2 salary (not on distributions from the S-corp). Because the S-corp pays half of FICA on the salary, the owner saves SE tax on the distribution portion — but only at 15.3% up to the wage base. The savings only make economic sense above roughly $60-80K profit after accounting for S-corp overhead (~$2,500/year in payroll + tax return costs). See the S-Corp vs. LLC Calculator for the full net-savings math.
This tool is for educational purposes only and is not an offer, approval, financial, legal, or tax advice. Tax outputs depend on your full return — consult a CPA before filing. ClearValue Lending is a funding platform.
https://clearvaluelending.com/tools/fica-vs-se-tax-calculator