Fica Tax Calculator

Report an Issue

Help us improve by telling us what went wrong.

Embed this Tool

Customize and copy the embed code for your website.

FICA Tax Calculator: Understand Your Social Security and Medicare Withholdings

The FICA Tax Calculator computes your Federal Insurance Contributions Act taxes, the Social Security and Medicare deductions that appear on every American paycheck. Enter your gross income and filing details, and the calculator breaks down exactly how much goes to Social Security, how much to Medicare, and whether the Additional Medicare Tax applies to your income level.

What Is FICA Tax?

FICA stands for the Federal Insurance Contributions Act, the law that mandates payroll taxes funding Social Security and Medicare. If you have ever looked at your pay stub and wondered why the net amount is significantly less than the gross, FICA is a major part of the answer. These are not voluntary contributions. They are mandatory deductions that fund two of the largest federal programs in the United States.

The combined FICA tax rate is 7.65% for employees: 6.2% for Social Security and 1.45% for Medicare. Employers match this amount dollar-for-dollar, making the total FICA contribution 15.3% of wages. Self-employed individuals pay both halves, the full 15.3%, though they can deduct the employer-equivalent portion on their income tax return.

Social Security Tax Details

The Social Security portion (6.2%) applies to earnings up to the wage base limit, which is adjusted annually for inflation. For 2026, this limit caps the amount of earnings subject to Social Security tax. Once your cumulative earnings for the year exceed this threshold, Social Security withholding stops for the remainder of the year. This is why high earners see a bump in take-home pay later in the year.

The FICA tax calculator applies the current wage base limit to your income, correctly stopping the Social Security calculation at the threshold. This prevents overestimation for high earners who often see incorrect figures from simpler calculators that ignore the cap.

Medicare Tax Details

Unlike Social Security, Medicare tax has no income cap. It applies to every dollar of earned income regardless of amount. The standard rate is 1.45%. However, high earners face an Additional Medicare Tax of 0.9% on earnings above $200,000 for single filers or $250,000 for married filing jointly. This surtax is the employee's responsibility alone. Employers do not match it.

The calculator accounts for this threshold, adding the 0.9% surtax only to income above the applicable filing-status threshold. This nuance is frequently missed by basic payroll calculators and can lead to unpleasant surprises at tax time for high earners who have not had enough withheld.

Who Should Use This Calculator?

Employees can verify that their employer is withholding the correct amount. Payroll errors happen more often than you would think, and catching a discrepancy early saves headaches when filing your annual return. If your pay stub shows more or less FICA withholding than the calculator predicts, it is worth asking your payroll department about it.

Self-employed individuals owe the full 15.3% as part of their self-employment tax. The calculator shows this combined amount, helping freelancers, gig workers, and small business owners estimate quarterly tax payments accurately. Underpaying estimated taxes leads to IRS penalties, so getting the FICA portion right is important.

Job seekers evaluating offers can use the calculator to understand take-home pay. A $75,000 salary sounds great, but after FICA alone takes $5,737.50 before income tax, the actual paycheck is noticeably smaller. Seeing these numbers upfront helps set realistic budget expectations.

HR professionals and bookkeepers use the tool as a quick cross-reference when setting up new employees in payroll systems or verifying withholding calculations during year-end reconciliation.

How to Use the Calculator

Enter your gross annual income or per-paycheck amount, select your employment type (W-2 employee or self-employed), and optionally specify your filing status for Additional Medicare Tax purposes. The calculator produces a complete breakdown: Social Security tax amount, Medicare tax amount, Additional Medicare Tax if applicable, total FICA, and the resulting after-FICA income.

FICA and Your Future Benefits

FICA taxes are not just deductions. They are investments in your future Social Security retirement benefits and Medicare health coverage. Your Social Security benefit amount is calculated from your 35 highest-earning years, with the taxed income serving as the basis. Understanding how much you contribute helps you plan for retirement and appreciate the scope of these federal programs.

Accurate, Private, and Free

The FICA Tax Calculator processes everything in your browser. No income data is transmitted to any server, which matters when you are entering sensitive financial information. The tool requires no account, no downloads, and delivers results instantly. Use it every pay period, every tax season, or whenever you need clarity on the largest payroll tax in America.