LLC vs S Corp Calculator

• LLCs can be taxed different ways

  An LLC may be taxed as a sole proprietorship, partnership, C corporation, or S corporation depending on elections and structure. This calculator models a default pass-through sole proprietor LLC baseline.

• S corporation pass-through model

  The S corporation path splits profit between owner W-2 salary (FICA) and distributions (not subject to self-employment tax in this simplified model).

• After-tax value comparison

  Estimated after-tax value shows what remains after federal taxes and, for the S corporation path, user-entered compliance costs.

• Not entity election advice

  Higher estimated after-tax value under these inputs does not mean forming an LLC, electing S status, or changing structure is appropriate for you.

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• Pass-through net profit

  Default LLC treatment in this model taxes net business profit on the owner’s personal return with self-employment tax under Schedule SE.

• Self-employment tax on full profit

  Unlike the S corporation salary split, the full LLC net profit amount modeled here is subject to self-employment tax before federal income tax.

• No separate payroll layer

  This LLC baseline does not include owner W-2 salary or employer payroll tax unless you model an S corporation separately.

• Simplified baseline only

  Multi-member LLCs, partnership returns, and corporate classifications are not fully modeled in this comparison.

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• Profit split

  S corporation business profit equals owner salary plus estimated distribution in this calculator.

• Payroll tax on salary

  Owner salary runs through employee and employer FICA. Employer FICA is treated as a business cost in the S corporation path.

• Distributions in this model

  Estimated distributions are not subject to self-employment tax in this simplified federal comparison.

• Salary is your assumption

  Enter the owner salary you want to test. This tool does not calculate or recommend reasonable compensation.

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• IRS officer compensation rules

  S corporation owner-employees are generally expected to receive reasonable W-2 wages for services before taking distributions.

• Facts and circumstances

  Reasonable compensation depends on role, industry, profit, and other factors. TaxChecker does not determine whether your entered salary is reasonable.

• User-entered salary only

  Model different salary levels to see federal tax effects, then review compensation with a CPA or tax attorney.

• Not a compliance test

  This calculator does not evaluate IRS reasonable compensation audits or state payroll rules.

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• Parallel federal paths

  The LLC path uses sole proprietor self-employment tax treatment. The S corporation path uses payroll tax on salary plus pass-through income tax and compliance costs.

• Estimated difference metric

  Estimated difference equals LLC after-tax value minus S corporation after-tax value based on your inputs—not a recommendation to choose either structure.

• Break-even profit

  Break-even profit estimates the business profit where S corporation after-tax value matches the LLC baseline, holding salary and compliance costs constant.

• Known exclusions

  State entity taxes, QBI deduction, legal liability differences, and operating agreement complexity are not fully modeled.

Estimates only — not tax advice, legal advice, or financial advice. TaxChecker is not affiliated with the IRS. Consult a qualified tax professional for your situation.

Read the full TaxChecker methodology