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Self-Employment Tax Calculator 2026: See Your Exact Tax by Business Structure

Enter your net business income to see SE tax under three structures: sole proprietor, LLC (default), and LLC with S-Corp election. Updated for 2026 rates and $184,500 Social Security wage base.

SE Tax Comparison Calculator - 2026
$
Salary: $48,750 (65%) | Distributions: $26,250
Sole Proprietor
$10,597
Schedule C, 15.3% on net profit
LLC (Default)
$10,597
Disregarded entity = identical to sole prop
LLC + S-Corp
$7,459
SE tax on $48,750 salary only
S-Corp Net Benefit at $75,000 income
SE tax saved: $3,138 | Compliance cost: -$2,000 | Net: +$1,138/yr
S-Corp election likely worth it at this income level. Consult a CPA to confirm salary is reasonable.

2026 Self-Employment Tax Rates Explained

12.4%
Social Security rate
On first $184,500 of net SE earnings
2.9%
Medicare rate
On all net SE earnings, no cap
0.9%
Additional Medicare
On SE earnings above $200k (single)
15.3%
Total combined
Below $184,500 wage base

The 92.35% rule: You do not pay SE tax on 100% of your net profit. You multiply net profit by 0.9235 first. This is because you can deduct the employer-equivalent half of SE tax (7.65%) before calculating. On $75,000 net profit, the SE tax base is $75,000 x 0.9235 = $69,263.

SE Tax at Key Income Levels - 2026

SE tax only. Add federal income tax on top of these figures.

Net ProfitSE TaxQuarterly PaymentSEP-IRA MaxSolo 401k Max
$30,000$4,239~$1,060$5,609$7,500
$50,000$7,065~$2,700$9,348$12,500
$75,000$10,598~$4,650$14,022$18,750
$100,000$14,130~$7,100$18,696$25,000
$150,000$21,195~$11,600$28,044$23,500
$200,000$25,737~$16,500$37,392$23,500

Quarterly payments are estimates including income tax. SEP-IRA max is 25% of net self-employment income (after SE tax deduction). Solo 401k limited to $23,500 in employee contributions in 2026.

How to Reduce Self-Employment Tax Legally

S-Corp Election
High at $60k+ net profit

Only pay SE tax on your salary, not distributions. Saves roughly $1.53 per $10 shifted to distributions. Requires payroll setup and separate tax return.

SEP-IRA Contributions
Moderate

Contribute up to 25% of net self-employment income (max $69,000 in 2026). Reduces AGI but not SE tax directly. Excellent for retirement savings.

Solo 401(k)
Moderate to High

Employee contribution up to $23,500 (2026), plus 25% employer contribution. Reduces AGI, which reduces income tax. Does not reduce SE tax directly.

Health Insurance Deduction
Low to Moderate

Deduct 100% of health insurance premiums for you and your family. Reduces adjusted gross income but not SE tax. Still valuable - reduces total federal tax burden.

Maximize Business Deductions
Varies

Every dollar of legitimate business expense reduces net profit, which reduces BOTH SE tax and income tax. Home office, vehicle, software, professional development - all reduce the SE tax base.

Quarterly Estimated Tax Payments: 2026 Due Dates

If you expect to owe $1,000 or more in taxes, you must make quarterly payments. Missing them triggers an underpayment penalty of approximately 7% annually on the amount owed.

Q1
Jan 1 - Mar 31
April 15, 2026
Q2
Apr 1 - May 31
June 16, 2026
Q3
Jun 1 - Aug 31
September 15, 2026
Q4
Sep 1 - Dec 31
January 15, 2027

Safe harbor rule: To avoid underpayment penalties, pay either 100% of your prior year tax liability or 90% of your current year liability (whichever is smaller). If your prior year AGI exceeded $150,000, the safe harbor is 110% of prior year liability.

Frequently Asked Questions

What is the self-employment tax rate for 2026?
The 2026 self-employment tax rate is 15.3%: 12.4% Social Security on earnings up to $184,500, plus 2.9% Medicare on all net earnings. An additional 0.9% Medicare surtax applies above $200,000 (single filers). You calculate SE tax on 92.35% of net profit, not 100%, because you deduct the employer-equivalent portion.
How do quarterly estimated tax payments work for self-employed people?
Self-employed individuals must pay estimated taxes four times per year if they expect to owe $1,000 or more. 2026 due dates: April 15, June 16, September 15, and January 15, 2027. Calculate payments by dividing your expected annual tax liability by 4, or use the prior year safe harbor (pay 100% of prior year tax, or 110% if AGI exceeded $150,000). Underpayment penalty is approximately 7% annually.
How can I reduce self-employment tax?
Legal ways to reduce SE tax: (1) S-Corp election if net profit exceeds $40,000-$60,000 - only pay SE tax on the salary portion; (2) Maximize SEP-IRA contributions (up to 25% of net profit or $69,000 in 2026); (3) Solo 401(k) contributions (up to $23,500 employee + 25% employer); (4) Health insurance premiums reduce SE income; (5) Maximize all legitimate business deductions to reduce net profit. All of these apply equally to sole proprietors and single-member LLCs.
What is the Social Security wage base for 2026?
The 2026 Social Security wage base is $184,500. You pay the 12.4% Social Security portion of self-employment tax only on the first $184,500 of net earnings. The 2.9% Medicare tax applies to all net earnings with no cap. The additional 0.9% Medicare surtax applies to earnings above $200,000 for single filers.
Can I deduct health insurance premiums as a self-employed person?
Yes. Self-employed individuals can deduct 100% of health insurance premiums for themselves and their family on Form 1040. This deduction reduces your adjusted gross income (and income tax) but does not reduce self-employment tax directly. The premiums must be for a plan established under your business, and you cannot claim the deduction for months when you were eligible for employer-sponsored coverage.
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