Self-Employment Tax Calculator 2026: Schedule SE 15.3%
Calculate your 2025 Schedule SE tax. Enter gross income and expenses to see the Social Security and Medicare breakdown, the 92.35% adjustment, your deductible half, and the per-quarter payment estimate.
Your Self-Employment Income, 2025
Total 1099-NEC / Schedule C gross revenue
Deductible Schedule C expenses (home office, supplies, mileage, etc.)
Additional Schedule C businesses or 1099 sources
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Enter your income above to see your Schedule SE breakdown
Schedule SE Estimate, 2025
Schedule SE Calculation
Net SE Income
× 92.35% (SE adjustment)
SS base (capped at $176,100)
Social Security tax (12.4%)
Medicare tax (2.9%, no cap)
Total SE Tax
Deduction & Quarterly
SE Deduction (50% of SE tax)
Net SE income after deduction
Est. quarterly SE payment
SE tax only. Does not include federal income tax, state taxes, or credits. Consult a tax professional.
Direct Answer
This self-employment tax calculator estimates your Schedule SE tax for 2025 and 2026. Self-employment tax is 15.3% of 92.35% of net SE income, covering 12.4% Social Security on earnings up to $176,100 and 2.9% Medicare with no cap. You deduct 50% of the SE tax from gross income as an above-the-line adjustment. That deduction reduces your federal income tax but not the SE tax itself.
Key Takeaways
SE tax rate: 15.3% applied to 92.35% of net SE income. The 92.35% factor reflects the employer-equivalent FICA share.
Social Security component: 12.4% on the first $176,100 of net SE earnings for 2025. Stops at that threshold.
Medicare component: 2.9% on all net SE earnings. No cap. Continues above $176,100 without limit.
Deduct 50% of total SE tax on Schedule 1, line 15. This is an above-the-line deduction. Itemizing is not required.
Pay via quarterly estimated taxes: April 15, June 16, September 15, January 15, 2026.
If the 92.35%-adjusted SE earnings (Schedule SE Line 6) exceed $200,000 (single) or $250,000 (MFJ), the Additional Medicare Tax at 0.9% also applies. For a single filer, this threshold is reached when net SE income exceeds approximately $216,568.
Self-employment tax is the Schedule SE equivalent of FICA. W-2 employees pay 7.65% employee FICA. Their employer pays a matching 7.65%. Self-employed workers pay both halves: the combined 15.3% rate. The calculation follows four steps.
Step
Calculation
2025 Values
1. Net SE Income
Gross SE income minus deductible business expenses
Your Schedule C net profit
2. SE Tax Base
Net SE income × 92.35%
92.35% = 1 minus 7.65%
3. Social Security Tax
SE base × 12.4% (up to $176,100)
Max SS SE tax: $21,836.40
4. Medicare Tax
SE base × 2.9% (no cap)
No ceiling
Total SE Tax
SS tax + Medicare tax
Line 12 on Schedule SE
SE Deduction
Total SE tax × 50%
Schedule 1, line 15 (above-the-line)
Why 92.35%?
The 92.35% factor (which equals 1 minus 7.65%) is the IRS adjustment that reflects the employer-equivalent share of FICA. W-2 employees pay only the employee 7.65% and do not pay income tax on the employer's matching contribution. Self-employed workers pay both halves. Applying the 15.3% rate to only 92.35% of net income prevents SE tax from applying to the portion that represents the employer's share. Without this adjustment, self-employed workers would pay SE tax on the portion of earnings that would effectively represent their own employer contribution.
The Social Security Wage Base
Social Security SE tax stops once the SE tax base reaches $176,100 for 2025. If your net SE income is $200,000, the SE tax base (after 92.35% adjustment) is $184,700. Social Security tax applies on $176,100 of that: $21,836.40. Medicare tax applies on the full $184,700: $5,356.30. Total SE tax: $27,192.70.
The wage base is the same limit that applies to W-2 Social Security withholding. For self-employed workers who also have W-2 wages, the W-2 wages count first against the $176,100 limit. If W-2 wages alone exceed $176,100, no Social Security SE tax applies on the SE income. Medicare SE tax still applies on all SE earnings.
The SE Tax Deduction
You deduct 50% of total SE tax on Form 1040, Schedule 1, line 15. This deduction reduces your adjusted gross income. It does not reduce SE tax itself. It exists because employers can deduct their FICA matching payments as a business expense. The SE deduction provides parallel treatment for self-employed workers. It reduces the federal income tax you owe on your SE income. On $10,000 of SE tax, the deduction is $5,000. At a 22% income tax rate, that $5,000 deduction saves $1,100 in income tax.
Real-World Examples, 2025 Rates
Example 1: Freelancer at $60,000 Net SE Income
Net SE income: $60,000. SE base: $60,000 × 92.35% = $55,410
Social Security tax: $55,410 × 12.4% = $6,870.84
Medicare tax: $55,410 × 2.9% = $1,606.89
Total SE tax: $8,477.73
SE deduction (50%): $4,238.87
Estimated quarterly SE payment: $2,119.43
Example 2: Consultant Above the SS Wage Base
Net SE income: $210,000. SE base: $210,000 × 92.35% = $193,935
Social Security tax: $176,100 × 12.4% = $21,836.40 (capped)
Medicare tax: $193,935 × 2.9% = $5,624.12
Total SE tax: $27,460.52
SE deduction (50%): $13,730.26
Additional Medicare Tax: $0. The AMT threshold applies to the 92.35%-adjusted SE base (Schedule SE Line 6), not raw net income. At $210,000 net income, the adjusted base is $193,935, which is below the $200,000 single threshold. AMT triggers for a single filer when net SE income exceeds approximately $216,568.
Example 3: W-2 Wages Plus SE Income
W-2 wages: $130,000. Net SE income: $50,000.
W-2 wages count first against the $176,100 SS wage base. Remaining SS base for SE: $176,100 minus $130,000 = $46,100.
SE base: $50,000 × 92.35% = $46,175
Social Security SE tax: $46,100 × 12.4% = $5,716.40 (limited to remaining wage base)
Medicare SE tax: $46,175 × 2.9% = $1,339.08
Total SE tax: $7,055.48
The interaction between W-2 Social Security wages and SE income is handled on Schedule SE. The calculator above estimates SE tax on SE income alone. If you have significant W-2 wages, the actual SS SE tax may be lower due to the combined wage base limit.
LMN Tax Inc. — Client Pattern
The most common SE tax planning mistake we see at LMN Tax Inc is treating the quarterly SE payment as a single line item rather than separating the SE tax portion from the income tax portion. The calculator above outputs SE tax only. Your actual quarterly estimated payment must also include an income tax estimate based on your projected taxable income, filing status, and applicable deductions.
For clients with volatile income (project-based work, seasonal businesses), the safe harbor approach is almost always the right strategy: pay 100% of the prior year total tax (110% if AGI exceeded $150,000) in four equal installments. This eliminates the Form 2210 penalty regardless of what the current year income turns out to be. It removes the guesswork and lets you focus on cash flow rather than tax projections.
The SE deduction is frequently overlooked. At $15,000 of SE tax, the 50% deduction is $7,500. For a client in the 22% bracket, that saves $1,650 in income tax. It is automatic and above-the-line. It does not require itemizing. Make sure it is on Schedule 1, line 15 of your return.
How This Calculator Differs From the 1099 Tax Calculator
This calculator focuses on Schedule SE only: the SE tax calculation, the 92.35% adjustment, the Social Security and Medicare components, the deductible half, and the quarterly SE tax estimate. It does not estimate federal income tax brackets or total annual tax liability.
The 1099 Tax Calculator is broader. It combines SE tax with estimated federal income tax and outputs a total tax liability figure, including the standard deduction and approximate income tax bracket. Use the 1099 calculator when you want a full tax estimate. Use this calculator when you want to understand specifically what Schedule SE generates.
If you are weighing W-2 employment against 1099 work, the W-2 vs 1099 Tax Calculator shows the federal tax gap side by side for the same gross income. That comparison includes FICA, the SE deduction effect on income tax, and effective rates for both scenarios.
To estimate how much you can shelter from income tax through a retirement plan, use the SEP IRA vs Solo 401(k) Calculator. It uses your net SE income and the SE deduction from this calculator as inputs to show the maximum contribution for each plan and the estimated federal tax savings.
For the complete self-employment tax framework including quarterly planning strategy, safe harbor rules, and deductible business expenses, see the Self-Employment Tax Guide.
When This Estimate May Not Apply
W-2 wages plus SE income: If you also have W-2 wages, your W-2 Social Security withholding counts first against the $176,100 wage base. The actual Social Security SE tax may be lower than this calculator shows. Use Schedule SE to calculate the combined result at filing.
Additional Medicare Tax threshold: If the 92.35%-adjusted SE base exceeds $200,000 (single) or $250,000 (MFJ), an additional 0.9% Medicare surtax applies. This calculator does not include the AMT in its results.
Partners with guaranteed payments: Guaranteed payments from a partnership are subject to SE tax. This calculator accepts the net amount but does not model K-1 guaranteed payment scenarios directly.
S-corp election: S-corp owners who pay themselves a reasonable salary avoid SE tax on distributions above salary. If you are considering an S-corp election, the W-2 vs 1099 calculator may not reflect the full SE tax savings. Use the LLC vs S-Corp Calculator for that comparison.
Retirement plan contributions: SEP IRA and Solo 401(k) contributions reduce federal taxable income but do not reduce SE tax. The SE tax calculation is based on net SE income before retirement plan deductions.
State SE tax treatment: Some states impose additional taxes on self-employment income or do not conform to the federal SE deduction. This calculator covers federal SE tax only.
Net operating losses: Prior-year Schedule C net operating losses that carry forward can reduce current-year net SE income. This calculator does not model NOL carryforwards.
Frequently Asked Questions
What is the self-employment tax rate for 2025?
The self-employment tax rate for 2025 is 15.3% on the SE tax base. The 15.3% breaks into two components: 12.4% for Social Security on net SE earnings up to $176,100, and 2.9% for Medicare on all net SE earnings with no cap. The rate applies to 92.35% of net self-employment income, not the full gross amount. Source: IRS Publication 334 (2025).
Why is SE tax calculated on 92.35% of income, not 100%?
The 92.35% factor (which equals 1 minus 7.65%) is an IRS adjustment that mirrors the employer-equivalent FICA share. W-2 employees pay 7.65% employee FICA. Their employer pays a matching 7.65% from employer funds. Self-employed workers pay both halves. The 92.35% adjustment prevents SE tax from applying to the portion of earnings representing the employer's share. Without it, self-employed workers would effectively pay SE tax on money they are paying as their own employer.
Can I deduct half of my self-employment tax?
Yes. You can deduct 50% of total SE tax as an above-the-line deduction on Form 1040, Schedule 1, line 15. This deduction reduces your adjusted gross income. It does not affect the SE tax calculation itself. You do not need to itemize to claim it. The deduction reflects the fact that employers deduct their FICA matching payments as a business expense.
How do I pay self-employment tax during the year?
SE tax is paid through quarterly estimated tax payments. The 2025 due dates are April 15, June 16, September 15, and January 15, 2026. Each payment covers approximately one-fourth of the estimated annual SE tax and income tax combined. The safe harbor rule: pay at least 100% of last year's total tax (110% if prior year AGI exceeded $150,000) to avoid the underpayment penalty on Form 2210.
Does SE tax apply above the Social Security wage base?
Partially. Social Security SE tax (12.4%) stops once net SE earnings reach $176,100 for 2025. Medicare SE tax (2.9%) continues on all net SE earnings above that amount with no ceiling. The Additional Medicare Tax (0.9%) applies if the 92.35%-adjusted SE base (Schedule SE Line 6) exceeds $200,000 for single filers or $250,000 for married filing jointly. Because the threshold applies to the adjusted base, net SE income must exceed approximately $216,568 (single) before AMT triggers. The surtax is calculated separately on Form 8959.
What is the difference between this calculator and the 1099 tax calculator?
This calculator focuses specifically on Schedule SE: the SE tax itself, the 92.35% adjustment, the deductible half, and your quarterly SE tax estimate. The 1099 Tax Calculator is broader: it estimates total tax liability including SE tax, federal income tax, and combined quarterly payments. Use this calculator to understand the SE tax mechanism. Use the 1099 calculator for a full year tax estimate.
Is self-employment tax the same as income tax?
No. Self-employment tax is a separate federal tax covering Social Security and Medicare, analogous to FICA withholding for W-2 employees. Income tax is calculated separately based on taxable income and filing status. Both are owed by self-employed workers. SE tax is calculated on Schedule SE. Income tax is calculated on Form 1040. Both are paid through quarterly estimated payments or as a balance due at filing.
Does the OBBBA No Tax on Tips deduction reduce self-employment tax?
No. The OBBBA deduction under IRC section 224 applies only to tip income reported on a W-2 by an employer in a qualifying industry. It is a federal income tax deduction for W-2 employees, not a self-employment tax deduction. SE tax on Schedule SE is not reduced by any OBBBA deduction. Source: IRS.gov OBBBA guidance.
What To Do Next
Next Steps
Use the SE tax total from this calculator as one input to your quarterly payment planning. To calculate your actual quarterly payment amounts with safe harbor analysis and due dates, use the Quarterly Tax Calculator. For total tax liability including income tax, run the 1099 Tax Calculator. If you missed or underpaid quarterly estimates and want to estimate what you will owe at filing, use our IRS underpayment penalty calculator. If you are setting a contract rate or transitioning from W-2 to 1099, the 1099 Contractor Rate Calculator shows the minimum hourly rate needed to cover your full cost stack.
For the Medicare component in detail including the Additional Medicare Tax above $200,000, see the Medicare Tax Explained guide. For the Social Security component including the wage base interaction with W-2 income, see the Social Security Tax Explained guide.
Disclaimer: This calculator provides estimates for educational purposes only and does not constitute tax or legal advice. Results are based on 2025 IRS Publication 334 rates. Actual tax liability depends on total income, deductions, credits, and filing circumstances. Consult a qualified tax professional before making financial decisions.