Free FICA Tax Calculator

Understanding FICA Taxes

The Federal Insurance Contributions Act (FICA) establishes the payroll taxes that fund the Social Security and Medicare programs in the United States. This free online FICA tax calculator serves as a comprehensive Social Security tax calculator, Medicare tax calculator, and payroll tax calculator, helping employees, employers, and self-employed individuals estimate the exact amount owed for a given tax year—especially for 2026 planning. By entering annual wages and filing status, users can quickly see both the employee and employer shares or the full self‑employment liability.

FICA taxes consist of two distinct components:

• Social Security tax – provides retirement, disability, and survivor benefits.
• Medicare tax – funds healthcare for seniors and certain younger people with disabilities.

For employees, the total tax is split equally between worker and employer; for self‑employed individuals, the entire burden falls on the sole proprietor.

Social Security Tax Rates and Wage Base

The Social Security portion is levied at a flat rate of 6.2 % on both the employee and the employer (combined 12.4 % for self‑employed persons). However, the tax applies only to earnings up to an annual ceiling called the Social Security wage base limit. This limit is adjusted each year to reflect changes in national average wages.

The table below lists the wage base limits for recent tax years:

Tax Year	Wage Base Limit
2021	$142,800
2022	$147,000
2023	$160,200
2024	$168,600
2025	$176,100
2026	$184,500

Income above the wage base is not subject to Social Security tax for that year.

Medicare Tax and the Additional Medicare Surcharge

The Medicare component is assessed at 1.45 % for both employee and employer (2.9 % total for self‑employed individuals). Unlike Social Security, there is no income cap for the basic Medicare tax—every dollar of wages is taxed.

High‑income earners must also pay an Additional Medicare Tax of 0.9 % on earnings that exceed certain thresholds. This extra tax is paid only by the employee (or the self‑employed individual), not by the employer. The threshold depends on the filer’s tax return status, as shown below:

Filing Status	Threshold for Additional Medicare Tax
Head of household	$200,000
Married filing jointly	$250,000
Married filing separate	$125,000
Single	$200,000

Total FICA Tax Liability

The total FICA tax for an employee is the sum of the Social Security tax (up to the wage base) and the Medicare tax (on all wages), plus the Additional Medicare Tax if applicable. Employers match the employee’s regular Social Security and Medicare portions but do not contribute to the additional surcharge.

For self‑employed workers, the combined rate is 15.3 % (12.4 % Social Security + 2.9 % Medicare) on net earnings, up to the same wage base limit for Social Security. The Additional Medicare Tax also applies when net income exceeds the appropriate threshold.

Step‑by‑Step Calculation Example

To illustrate, consider a single filer earning $220,000 in 2026.

1. Social Security tax – apply the 6.2 % rate only to the first $184,500 of income (the 2026 wage base). $$\text{Social Security tax} = \$184{,}500 \times 6.2\% = \$11{,}439$$
2. Medicare tax – apply the 1.45 % rate to the full $220,000. $$\text{Medicare tax} = \$220{,}000 \times 1.45\% = \$3{,}190$$
3. Additional Medicare tax – apply 0.9 % to earnings above $200,000. $$\text{Additional Medicare tax} = (\$220{,}000 - \$200{,}000) \times 0.9\% = \$180$$
4. Total FICA tax – sum the three components. $$\text{Total FICA tax} = \$11{,}439 + \$3{,}190 + \$180 = \$14{,}809$$

This total represents the employee’s share only; the employer would pay an additional $11,439 +$3,190 = $14,629 (matching the Social Security and regular Medicare portions). A self‑employed person earning the same amount would owe both shares, totaling$29,418 before any adjustments.

Why Rates and Limits Change

FICA tax parameters are updated periodically by the IRS to keep pace with inflation and wage growth. While the core rates (6.2 % and 1.45 %) have remained stable for years, the wage base limit and the additional Medicare thresholds are revised annually. Always verify the current year’s figures or consult a tax professional before filing.

This FICA tax calculator incorporates the latest 2026 rules, making it a reliable self‑employment tax calculator as well as a standard payroll tax calculator. Whether you are an employee reviewing your pay stub or a freelancer setting aside quarterly estimates, the tool delivers precise, up‑to‑date results.