Payroll Tax Estimator (Flat Rate)

Frequently Asked Questions

What payroll taxes does an employer pay?

Employer-side taxes (2025): Social Security 6.2% (up to $168,600 wage base), Medicare 1.45%, FUTA 0.6% (federal unemployment), state unemployment (varies 0.5-6%). Total ~8-15% on top of salary. Employees pay matching SS/Medicare separately.

What's the true cost of an employee?

Budget 1.25x to 1.4x the base salary as the fully loaded cost. The overhead breaks down roughly as follows: FICA taxes add 7.65% (6.2% Social Security plus 1.45% Medicare), employer-sponsored health insurance runs $8,000-$15,000 per year depending on coverage tier, a 401(k) match of 3-6% adds another layer, and workers compensation insurance typically adds 1-3% depending on the job category. Factor in PTO accrual, equipment, software licenses, and shared office overhead and the multiplier reaches 1.4x for knowledge workers in high-cost markets.

Are payroll taxes deductible?

Yes - employer-paid payroll taxes are deductible business expenses. Employee-paid payroll taxes are NOT deductible (they reduce gross-to-net pay but not employer taxable income). 1099 contractors pay both halves themselves (15.3% self-employment tax).

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This calculator provides estimates for informational purposes only. Business results vary by industry, market conditions, and execution. Not a substitute for professional business consulting, accounting, or legal advice. Consult qualified professionals before making business decisions.

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How This Calculator Works

This computes both sides of a paycheck. On the employee side it applies your federal rate, FICA rate (default 7.65%), and state rate to gross salary, sums them as total deductions, and returns net (take-home) pay annually and monthly. On the employer side it adds the costs a salary figure hides: a 7.65% FICA match plus 0.6% FUTA unemployment, producing the true total cost of employment. The headline insight: an employee's gross salary is not what they cost you.

The FICA Wedge: One Tax, Paid Twice

FICA is 15.3% total - 6.2% Social Security + 1.45% Medicare = 7.65% withheld from the employee, and an identical 7.65% paid again by the employer. That match is the single biggest reason a $60,000 employee costs well over $60,000. Social Security caps at an annual wage base (it stops applying above ~$168,600, indexed yearly); Medicare has no cap and adds 0.9% extra employee-only above $200,000. This tool uses flat rates, so it slightly overstates SS tax for high earners past the wage base - a known simplification.

Employer vs. Employee: Who Pays What

Employee-only: federal & state income tax withholding (this is their money; you just remit it).

Shared 50/50: FICA - 7.65% each side.

Employer-only: FUTA (federal unemployment, ~0.6% net of state credit on the first $7,000) and SUTA (state unemployment, experience-rated and varies widely).

Hidden but real: workers' comp, benefits, and admin push fully-loaded cost to roughly 1.25–1.4× base salary - more than this tool's ~8.25% employer add alone.

Withholding Is an Estimate, Not the Final Bill

Flat-rate withholding here approximates a paycheck, but actual employee tax liability is determined at filing via the W-4, progressive brackets, deductions, and credits - over- or under-withholding settles as a refund or balance due. For the business, the non-negotiable rule is trust-fund taxes: withheld income and the employee FICA share are the government's money held in trust. Missing a payroll-tax deposit triggers steep penalties and personal liability for owners/officers (the Trust Fund Recovery Penalty) - it pierces the corporate veil. Deposit on schedule, every time.

Common Mistakes

Budgeting only the salary - employer FICA, FUTA/SUTA, and benefits add 25–40% on top.

Ignoring the Social Security wage base - flat rates overstate tax on high earners past the cap.

Misclassifying employees as contractors - dodging employer FICA this way is a top audit trigger with back-tax and penalty exposure.

Spending withheld trust-fund taxes as cash flow - it isn't your money; the personal-liability penalty is severe.

Payroll Tax Estimator (Flat Rate)

Frequently Asked Questions

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