Free FICA Tax Calculator (2026)

IRS 1040 tax forms with handwritten 'Tax Time!' note for filing reminder.

Our free FICA tax calculator helps employees, employers, payroll teams, and business owners estimate Social Security and Medicare taxes for 2026. FICA stands for the Federal Insurance Contributions Act, which funds Social Security and Medicare through payroll taxes. Employees pay 6.2% for Social Security and 1.45% for Medicare, while employers match those same amounts. Use this free FICA tax calculator to see your employee FICA withholding, employer payroll tax match, combined payroll tax cost, and an optional estimate of take-home pay after federal income tax.

Free FICA Tax Calculator

Enter your gross pay and pay frequency to calculate Social Security tax, Medicare tax, employer match, and combined FICA payroll taxes for 2026.






Traditional 401k contributions usually reduce federal income tax but do not reduce FICA taxes. Section 125 cafeteria plan deductions, health premiums, and many HSA/FSA contributions often do reduce FICA wages.

How This Free FICA Tax Calculator Works

This free FICA tax calculator estimates payroll taxes using the official 2026 Social Security and Medicare rates. Here is how to use it:

Step 1 — Enter Gross Pay and Frequency

Enter your gross pay and select how often you receive that amount. The calculator annualizes your wages to determine whether your income reaches the 2026 Social Security wage base of $168,600. Social Security tax applies only up to that wage base, while Medicare tax applies to all eligible wages.

Step 2 — Enter Any FICA-Exempt Deductions

Enter any deductions that reduce FICA wages, such as Section 125 cafeteria plan health premiums or certain HSA/FSA contributions. These deductions lower the wages subject to Social Security and Medicare taxes. Traditional 401k contributions usually do not reduce FICA wages, so this free FICA tax calculator keeps 401k separate from FICA-exempt deductions.

Step 3 — Review Employee, Employer, and Combined Tax

The calculator shows the employee share of FICA, the employer match, and the combined payroll tax burden. If you enter a 401k percentage, it also estimates your federal income tax and shows an approximate take-home pay after both FICA and federal income tax are applied.

Frequently Asked Questions

What is FICA tax?

FICA tax stands for the Federal Insurance Contributions Act tax. It includes two separate payroll taxes: Social Security tax and Medicare tax. Employees pay 6.2% Social Security tax on wages up to the annual wage base and 1.45% Medicare tax on all eligible wages. Employers pay an equal matching amount, so the total combined FICA rate is 15.3% on wages below the Social Security cap. This free FICA tax calculator shows both sides of the calculation.

What are the 2026 FICA tax rates?

For 2026, the employee Social Security tax rate is 6.2% on wages up to $168,600, and the employee Medicare tax rate is 1.45% on all wages. Employers match both amounts, meaning employers also pay 6.2% Social Security and 1.45% Medicare. This free FICA tax calculator uses those exact 2026 rates.

Does a 401k contribution reduce FICA taxes?

No, traditional 401k contributions usually do not reduce FICA taxes. They lower federal income tax withholding, but Social Security and Medicare are generally still calculated on the full wage amount before the 401k deduction. This is one of the most common payroll tax misunderstandings. If you want to see how 401k contributions affect federal withholding and take-home pay, use our free take home pay after 401k calculator.

What deductions reduce FICA wages?

Certain Section 125 cafeteria plan deductions, pre-tax health insurance premiums, and many HSA/FSA contributions can reduce wages subject to FICA tax. These deductions are taken out before Social Security and Medicare taxes are calculated. Because plan design matters, payroll departments should confirm whether a deduction is FICA-exempt before relying on it. This free FICA tax calculator lets you enter FICA-exempt deductions separately for this reason.

What happens when I exceed the Social Security wage base?

Once your wages exceed the annual Social Security wage base of $168,600 in 2026, you stop paying the 6.2% Social Security tax on wages above that amount. Medicare tax at 1.45% continues on all eligible wages. This means high-income earners see their payroll withholding drop slightly later in the year after reaching the cap. This free FICA tax calculator shows how much of your income is subject to Social Security and how much is above the cap.

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Understanding FICA Taxes and Payroll Withholding

Why FICA Exists and What It Funds

FICA payroll taxes fund two major federal programs: Social Security retirement, disability, and survivor benefits, and Medicare health coverage for seniors and certain disabled individuals. Unlike federal income tax, which is withheld based on your filing status and tax bracket, FICA is a payroll tax tied directly to wages. Every employee pays the same baseline Social Security and Medicare rates up to the Social Security wage base. Employers match those amounts dollar for dollar, doubling the total payroll tax flowing into the system. This is why FICA is one of the most predictable taxes on a paycheck — and one of the first payroll taxes both employers and employees need to understand.

How Employers and Employees Share the FICA Burden

Employees often notice only the employee share of FICA on their pay stub, but employers pay the exact same amount on top of wages. That means a worker earning $100,000 in 2026 pays $7,650 in employee FICA, and the employer also pays $7,650, for a combined payroll tax cost of $15,300. For business owners, understanding both sides of the equation is essential for budgeting labor costs. For employees, understanding the employer share helps explain why payroll taxes matter even when they are not all visible on the paycheck. The IRS explains payroll tax withholding and employer responsibilities in detail in IRS Publication 15. The Social Security Administration publishes the annual contribution and benefit base, including the 2026 wage cap, at the SSA contribution and benefit base page.

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