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S-Corp Tax Calculator

Compare payroll tax savings from splitting income between a reasonable salary and distributions.

Result

Estimated Payroll Tax Savings vs. Sole Proprietor
$8,954.33
Salary Payroll Tax (employee + employer)
$12,240.00
Distributions (not subject to payroll tax)
$70,000.00
Estimated Income Tax
$25,442.50
Total Estimated Tax
$37,682.50

The IRS requires S-Corp owner-employees to take a 'reasonable' salary for services performed - distributions alone can trigger an audit.

$40K$30K$20K$10K$0Tax on Salary Portion: $21KTax on Salary Portion: $12KSole Proprietor SE TaxS-Corp Payroll Tax

About the S-Corp Tax Calculator

Electing S-Corp status is one of the most common tax strategies for profitable small business owners - the appeal is that only your 'reasonable salary' is subject to payroll tax, while the rest of the profit can be taken as distributions that avoid it. Our S-Corp Tax Calculator estimates how much that split could save.

How It Works

The calculator splits your net business profit into a salary (subject to FICA payroll tax, both employee and employer shares since you effectively pay both as the owner) and distributions (not subject to payroll tax). It compares the resulting payroll tax against what you'd owe as a sole proprietor paying full self-employment tax on all of it, showing the estimated savings.

Payroll tax = FICA on salary × 2 (employee + employer share) Savings = self-employment tax on full profit − payroll tax on salary alone

Formula & Methodology

The tax mechanics behind an S-Corp election come down to a single distinction the IRS draws between wages and distributions. Wages paid to an owner-employee are subject to FICA payroll tax exactly like any other employee's paycheck (with the S-Corp itself paying the employer half, though economically that cost still comes from the same business). Distributions of remaining profit to a shareholder, by contrast, are not wages at all under the tax code and so never touch FICA. The entire strategy hinges on legitimately splitting profit into a reasonable salary (taxed) and distributions (not taxed for payroll purposes) rather than taking it all as one lump sum the way a sole proprietor must.

Step-by-Step: Calculating It By Hand

  1. 1Determine total net business profit for the year.
  2. 2Set a reasonable salary for the owner's role, based on what a similar employee would be paid in the market.
  3. 3Calculate FICA payroll tax on that salary, doubled to represent both the employee and employer shares (both ultimately come from the business).
  4. 4The remainder of profit after salary is taken as distributions, which avoid payroll tax entirely.
  5. 5Compare total payroll tax under the S-Corp split against what self-employment tax would have been on the full profit as a sole proprietor, to see the estimated savings.

Examples

Meaningful savings

$150,000 net profit with an $80,000 reasonable salary → payroll tax applies only to the $80,000, while $70,000 in distributions avoids it, saving several thousand dollars versus paying self-employment tax on the full $150,000.

Salary set too low

Setting salary far below what's 'reasonable' for the work performed increases the tax savings shown here, but also increases audit risk - the IRS specifically scrutinizes unreasonably low S-Corp salaries.

Advantages

  • Quantifies the actual dollar savings of an S-Corp election, not just a general claim that it 'saves money'
  • Separately shows payroll tax on salary and untaxed distribution income
  • Helps evaluate whether profit is high enough to justify the added S-Corp administrative cost and complexity
  • Uses accurate FICA math including both employee and employer shares

Common Mistakes

  • Setting an unreasonably low salary purely to maximize distributions - this is a well-known IRS audit trigger
  • Forgetting S-Corps have real added costs: separate tax filings, payroll processing, and often a CPA
  • Assuming S-Corp election helps at low profit levels - the administrative overhead can exceed the tax savings
  • Not researching what a 'reasonable salary' looks like for your specific role and industry

Edge Cases to Watch For

  • The IRS actively audits S-Corps with salaries that look artificially low relative to the work performed - 'reasonable compensation' is a real legal requirement, not an optional guideline.
  • S-Corps require running actual payroll, filing a separate corporate tax return, and often more bookkeeping than sole-proprietor taxation, all of which cost money that should be weighed against the payroll tax savings.
  • At low profit levels, the administrative overhead of an S-Corp can exceed any tax savings, making the election net-negative.
  • Distributions are still subject to regular federal income tax - the savings here are specifically payroll/self-employment tax, not income tax as a whole.

Common Use Cases

  • Deciding whether an S-Corp election is worth the added complexity for your business
  • Setting a defensible reasonable-salary figure
  • Estimating payroll tax savings compared to sole proprietor or default LLC taxation
  • Planning owner compensation structure for a profitable small business
Written & fact-checked by the Calculateus TeamLast updated August 5, 2026How we verify our formulas

Frequently asked questions

What counts as a 'reasonable salary' for an S-Corp owner?

The IRS looks at what similar businesses pay for similar work in your industry and region - there's no fixed formula. Setting salary too low relative to distributions is one of the most common S-Corp audit triggers.

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Conclusion

S-Corp elections can genuinely save real money once profit is high enough, but the 'reasonable salary' requirement is not optional - the IRS actively audits S-Corps with implausibly low owner salaries. Use this estimate as a starting point for a conversation with a CPA, who can help you set a defensible salary and confirm an S-Corp election makes sense for your numbers.

References