S Corp Payroll Tax Calculator: Owner Salary & Tax Savings

This calculator compares what you'd pay in self-employment tax as a sole proprietor or single-member LLC with what you'd pay in payroll tax as an S corporation that pays you a salary. Enter your business's net income and the salary you plan to pay yourself, and it shows the payroll tax on that salary (both halves of FICA, Additional Medicare, federal and state unemployment tax), the K-1 income left over, the federal income tax under each structure, and a range of salaries to compare.

The short version: an S corporation saves money because distributions aren't subject to the 15.3% payroll tax, but the IRS requires a reasonable salary first, and the real savings are smaller than the headline number once you count the lost QBI deduction and the cost of payroll and a corporate return.

The results are estimates for informational purposes only. They include federal income tax with the standard deduction, but not state income or entity taxes, retirement contributions, or the cost of running an S corporation, all of which are covered below.

What each input does

S corp net income. The business's profit before paying you a salary: revenue minus ordinary business expenses (materials, rent, software, contract labor, depreciation). Don't subtract your own draws.

Owner salary. The W-2 wage you'll pay yourself through payroll. This is the number reasonable-compensation rules are about.

Ownership percentage. Your share of the company. Distributions are split by ownership; your salary is not.

Filing status. Sets the standard deduction, the income tax brackets, the QBI threshold, and the Additional Medicare threshold ($200,000 single or head of household, $250,000 joint, $125,000 separate).

Specified service business. Check it for health, law, accounting, consulting, financial services and similar fields. It only changes the result when taxable income is above $201,750 ($403,500 joint) for 2026, where the QBI deduction for these businesses phases out.

Your other W-2 wages. Pay from another job. It uses up your $184,500 Social Security wage base and the Additional Medicare threshold before the business does, and it raises your income tax bracket.

Other taxable income. Interest, a spouse's wages on a joint return, and similar income. It affects only the income tax brackets.

SUTA rate and wage base. Your state unemployment insurance rate and the state's taxable wage cap. New employers get a state-assigned rate; your notice from the state lists it. Some states let corporate officers opt out — leave the rate at 0 if yours does.

FUTA credit reduction. Extra federal unemployment tax in states that have not repaid federal unemployment loans. For 2025 it was 1.2% in California and 4.5% in the U.S. Virgin Islands, per the Department of Labor; the 2026 list is final only after November 10, 2026.

Industry. Used only to show a benchmark salary range. The ranges are the calculator's rules of thumb, not IRS figures — your defensible salary comes from market pay for your role.

Active participation. Flags situations where large distributions next to a small salary may draw attention, and controls the 2026 $400 minimum QBI deduction, which requires material participation.

How the math works

Sole proprietor self-employment tax (Schedule SE): net earnings = profit × 92.35%. Social Security is 12.4% of net earnings up to the $184,500 wage base for 2026 (SSA), reduced by any other W-2 wages. Medicare is 2.9% of all net earnings. One-half of the SE tax is deductible on your Form 1040 and also reduces the profit that counts for the QBI deduction.

S corp payroll tax on your salary:

• Social Security: 6.2% employee + 6.2% employer on wages up to $184,500. If other jobs already used part of the base, the extra employee share comes back as a credit on your return; the employer share does not.
• Medicare: 1.45% employee + 1.45% employer on all wages.
• Federal unemployment (FUTA): 6.0% on the first $7,000 of wages, less a credit of up to 5.4% for paying state unemployment tax — a net 0.6%, or $42 a year (IRS Topic 759), plus any credit reduction.
• State unemployment (SUTA): your rate × the state wage base.

Additional Medicare Tax of 0.9% (Form 8959) applies under both structures — on self-employment income or wages above $200,000 single / $250,000 joint, after counting your other wages first. It is not part of SE tax and is not deductible.

Income tax. The employer taxes are a business deduction, so K-1 income = profit − salary − employer taxes. The QBI deduction is 20% of the K-1 income (salary is not qualified business income) for the S corp, and 20% of profit minus half of SE tax for the sole proprietor, subject to the taxable-income cap and, above the threshold, the W-2 wage limit — where your own S corp salary counts. Both sides use the 2026 standard deduction and brackets.

Savings are shown two ways: payroll-tax savings, and total federal savings after income tax. The second number is the one to plan with.

Worked example: $150,000 profit, $75,000 salary

A single consultant with no other income expects $150,000 of profit in 2026.

Payroll tax side

Payroll tax savings: $21,194 − $11,517 = $9,677.

The full federal picture

Payroll tax isn't the only thing that changes. In the S corporation, the employer taxes ($4,650 Social Security + $1,087.50 Medicare + $42 FUTA = $5,780) are a business deduction, and the QBI deduction is figured only on the K-1 profit — not on your salary. This is the comparison the calculator shows.

Real federal savings: $6,066, not $9,677. The difference is mostly the smaller QBI deduction, plus the loss of the half-SE-tax deduction. From that $6,066, subtract the cost of operating as an S corporation:

• State unemployment insurance on the owner's wages (rates vary by state and experience)
• Payroll software or a payroll service
• Preparation of Form 1120-S and the K-1, in addition to your personal return
• State entity taxes or minimums — California, for example, charges S corporations 1.5% of net income with an $800 minimum

In this example, the S corporation probably still comes out ahead by a few thousand dollars a year. At $60,000 of profit with a $36,000 salary, the calculator shows about $2,300 of federal savings before those costs — a payroll service and a second tax return can absorb most of it.

What counts as reasonable compensation?

The Internal Revenue Code doesn't set a number. The IRS says shareholder-employees must be paid reasonable compensation for the services they provide before taking distributions, and it lists factors courts use in its guidance on S corporation compensation:

• Training and experience
• Duties and responsibilities
• Time and effort devoted to the business
• Dividend history
• Payments to non-shareholder employees
• Timing and manner of paying bonuses
• What comparable businesses pay for similar services
• Compensation agreements
• Use of a formula to determine pay

In practice, the most defensible approach is a written record of what it would cost to hire someone to do your job: Bureau of Labor Statistics occupational wage data for your metro area, salary surveys, or job postings. If you spend 70% of your time doing billable work and 30% running the business, weight the two roles accordingly.

Courts have reclassified distributions as wages when the salary was clearly too low. In David E. Watson, P.C. v. United States (8th Cir. 2012), an accountant who paid himself $24,000 a year while taking distributions of roughly $175,000 to $200,000 a year had a large part of those distributions recharacterized as wages, with back payroll taxes, interest, and penalties.

Salary scenarios at $150,000 of profit

Single filer, no other income, 2026, no SUTA:

Each $10,000 you shift from salary to distribution saves about $1,530 in payroll tax. Going the other way, each extra $10,000 of salary also cuts the QBI deduction by roughly $2,150 (20% of the salary plus its employer taxes), which at a 22% or 24% marginal rate adds about $500 of income tax — that is why savings fall faster than payroll tax alone suggests. The lowest salary isn't automatically the right answer: it carries the most audit risk, and a reasonable salary is required regardless of the tax result.

Other things that change when you pay yourself a salary

Retirement contributions. A solo 401(k) employer contribution is 25% of W-2 wages from your S corporation, versus roughly 20% of net self-employment earnings as a sole proprietor. A low salary limits the employer contribution. Model both with the solo 401(k) calculator.

Health insurance. For a more-than-2% shareholder, premiums paid by the S corporation are added to W-2 box 1 wages but are not subject to Social Security or Medicare tax. You then take the self-employed health insurance deduction on your Form 1040.

Social Security benefits. Lower wages mean lower credited earnings for your future Social Security benefit. For someone far from retirement, this is a real but often modest trade-off.

Withholding and estimated taxes. Your salary has income tax withheld through payroll, which can replace some or all of your quarterly payments. Distributions don't, so you may still need estimates for the K-1 income; see how to pay quarterly estimated taxes.

Payroll filings you take on

Missed deposits carry their own penalties, so most single-owner S corporations use a payroll service from day one.

How to elect S corporation status

An LLC or corporation elects by filing Form 2553 with the IRS. The election must be filed no later than two months and 15 days after the beginning of the tax year it should take effect — March 15, 2027 for a calendar-year 2027 election — or at any time during the preceding year. If you miss the deadline, Rev. Proc. 2013-30 provides relief in many cases when you have reasonable cause.

When an S corporation usually doesn't pay off

• Profit is modest. Below a salary you'd have to pay anyway, there is nothing to shift into distributions.
• You're in a state with high entity-level costs. Some jurisdictions don't recognize S corporations at all; New York City, for example, taxes them under its general corporation tax.
• Income is volatile. A required salary is a fixed cost in a bad year.
• You expect losses. Losses are limited by your stock and debt basis, which is often less flexible than in a sole proprietorship.

Before electing, compare the full picture: run the sole-proprietor numbers through the 1099 tax calculator, then check how a lower K-1 changes your QBI deduction. Contractors in construction trades can also review the contractor tax deductions guide, since every deduction lowers the profit this calculation starts from.