Self-Employment Tax for LLCs: How It Works in 2026
Self-employment tax is not simply “15.3% of every LLC owner’s profit.” The regular tax combines 12.4% Social Security and 2.9% Medicare, but federal tax classification, partnership-member rules, W-2 wages, the Social Security cap and Additional Medicare Tax all change the result.
How much self-employment tax does an LLC owner pay in 2026?
The regular self-employment tax rate is 15.3%: 12.4% Social Security plus 2.9% Medicare. Under the regular method, net earnings from self-employment are generally 92.35% of relevant self-employment profit. For 2026, the Social Security portion is limited by the $184,500 contribution and benefit base. A separate 0.9% Additional Medicare Tax can apply above filing-status thresholds.
What Self-Employment Tax Actually Is
Self-employment tax is the federal tax used to fund Social Security and Medicare for people with net earnings from self-employment. It is separate from federal income tax. An LLC is a state-law entity, not a single federal tax category, so the answer depends on whether the LLC is disregarded, taxed as a partnership, or taxed as a corporation/S corporation.
Start with tax classification, not the LLC label. The same state-law LLC can produce different Social Security and Medicare tax results depending on federal tax treatment and owner participation.
How the 2026 Calculation Works
1. Determine SE income
Identify the income that belongs in net earnings from self-employment under the applicable sole-proprietor or partnership rules.
2. Apply 92.35%
Under the regular method, net self-employment earnings are generally 92.35% of relevant self-employment profit.
3. Apply Social Security
Apply 12.4% only to the amount that remains under the 2026 $184,500 combined wage/base limit.
4. Apply Medicare
Apply 2.9% without a wage cap, then separately test for Additional Medicare Tax.
| 2026 item | Rule |
|---|---|
| Regular SE tax rate | 15.3% = 12.4% + 2.9% |
| Regular-method adjustment | Generally 92.35% |
| Social Security wage base | $184,500 |
| Medicare | 2.9%, no cap |
| Additional Medicare Tax | 0.9% above threshold |
| Schedule SE threshold | Generally $400 of net SE earnings |
Who Owes Self-Employment Tax?
Single-member LLC taxed as a disregarded entity
A sole owner reporting business activity on Schedule C generally includes the resulting net profit in the self-employment tax calculation, subject to Schedule SE rules and exceptions.
LLC taxed as a partnership
Partners—including members of an LLC taxed as a partnership—are treated as self-employed, not employees, when performing services for the partnership. IRS guidance says that if a partner does not qualify as a limited partner, net earnings generally include the distributive share of ordinary business income or loss plus applicable guaranteed payments.
If a partner does qualify as a limited partner, the rule is narrower: generally, guaranteed payments for services enter net earnings from self-employment while the distributive share is excluded under section 1402(a)(13).
Do not turn this into “active LLC member = always full SE tax” or “passive LLC member = automatically exempt.” The limited-partner question for LLC members remains legally sensitive.
LLC taxed as an S corporation
A shareholder who performs more than minor services is generally an employee for federal employment-tax purposes and must receive appropriate reasonable compensation. Proper non-wage distributions generally are not subject to self-employment tax, but wages are subject to employment taxes and the IRS can reclassify underpaid compensation.
The 2026 Sirius Solutions Case: What It Actually Decided
On January 16, 2026, the Fifth Circuit decided Sirius Solutions, L.L.L.P. v. Commissioner. It rejected the IRS’s passive-investor test for the state-law limited partners before it and held that a “limited partner” under section 1402(a)(13) is a partner in a state-law limited partnership that has limited liability.
Critical correction: the court did not hold that LLC and LLP members are categorically excluded. Footnote 1 says the court was not discussing whether LLP or LLC members may also qualify for the limited-partner exception.
So Sirius should not be used as a blanket “yes” or blanket “no” answer for LLC members.
Rental Real Estate: General Exclusion, Important Exceptions
Rents from real estate are generally excluded from net earnings from self-employment. But the exclusion is not absolute. IRS partnership instructions pull certain rental income back into the self-employment calculation when property is held for sale to customers by a real-estate dealer or when services are rendered to occupants beyond services usually provided with rental space.
Guaranteed payments also require care: a limited partner’s guaranteed payment for services can be self-employment income, while blanket statements that every guaranteed payment of every type is always subject to SE tax are too broad.
Additional Medicare Tax Is Separate
A separate 0.9% Additional Medicare Tax applies when Medicare wages, RRTA compensation and self-employment income exceed the applicable filing-status threshold: $250,000 married filing jointly, $125,000 married filing separately, and $200,000 for other filers.
If you have both Medicare wages and self-employment income, wages reduce the threshold available to self-employment income, but not below zero.
Deduction correction: Additional Medicare Tax is computed separately on Form 8959 and cannot be included as part of the deductible one-half of self-employment tax.
Ways to Reduce or Manage the Tax Legally
Model an S corporation election
Compare reasonable salary, payroll taxes, state taxes, QBI effects, benefits and compliance costs. There is no universal $60,000–$80,000 break-even rule.
Characterize rental income correctly
Separate ordinary rental income from dealer activity and rentals involving substantial services to occupants.
Claim the deduction correctly
One-half of regular self-employment tax is generally deductible as an adjustment to income. Additional Medicare Tax is not part of that amount.
Estimated Tax Payments
Self-employed taxpayers may need estimated payments because business profit usually has no employer withholding. Standard federal installment dates are generally April 15, June 15, September 15 and January 15 of the following year, adjusted for weekends and legal holidays. See our LLC Quarterly Taxes guide.
2026 Self-Employment Tax Estimator
This estimator improves on the old calculator by accounting for your Social Security wages and Medicare wages on the return. Those inputs materially change the result for owners who also have W-2 income.
Regular SE tax: $11,304
Additional Medicare Tax: $0. Deductible half of regular SE tax: $5,652.
Assumptions: regular Schedule SE method; 2026 Social Security base $184,500; no RRTA compensation; input profit is already income that belongs in net earnings from self-employment. Additional Medicare Tax is separate and not included in the deductible-half figure.
Three Examples That Show Why the Inputs Matter
| Situation | Key effect |
|---|---|
| $80,000 SE profit, no W-2 wages | Regular method applies to 92.35% of profit; both Social Security and Medicare components apply. |
| $80,000 SE profit + $184,500 Social Security wages | No additional 12.4% Social Security SE component because the 2026 wage base is already used; Medicare still applies. |
| Single filer with $150,000 Medicare wages + $100,000 SE profit | The $200,000 Additional Medicare threshold is reduced by wages, so some SE income can face the separate 0.9% tax. |
Primary Sources & Verification
This guide was rechecked against current IRS, SSA and Fifth Circuit sources in August 2026. The calculator is educational and deliberately does not decide disputed or fact-intensive partnership-member classification questions.