FICA Tax Calculator
Calculate Social Security, Medicare, and Additional Medicare taxes for employees and self-employed workers (2026 rates)
About the FICA Tax Calculator
The FICA Tax Calculator is designed to estimate the payroll taxes mandated by the Federal Insurance Contributions Act for the 2026 tax year. These taxes fund Social Security and Medicare, which provide benefits for retirees, disabled individuals, and children of deceased workers. This tool is essential for both traditional W-2 employees wanting to understand their net take-home pay and self-employed freelancers who are responsible for the full 15.3% self-employment tax burden.
Calculating FICA is more complex than a flat percentage because of two critical triggers: the Social Security Wage Base and the Additional Medicare Tax threshold. Once an individual's earnings surpass the annual Social Security cap, that portion of the tax ceases. Conversely, higher earners must account for a surtax on Medicare once they cross a specific income level based on their filing status. This calculator processes these variables to provide a breakdown of your mandatory federal insurance contributions.
Formula
FICA Tax = (Gross Wages * Social Security Rate) + (Gross Wages * Medicare Rate) + (Wages over Threshold * Additional Medicare Rate)The formula calculates three distinct components. Social Security is 6.2% for employees up to the annual wage base limit. Medicare is 1.45% on all earnings without a cap. For high earners, the Additional Medicare Tax adds 0.9% to any wages exceeding the statutory threshold ($200,000 for individuals). For self-employed individuals, the base rates are effectively doubled to 12.4% for Social Security and 2.9% for Medicare.
Worked examples
Example 1: An employee earning an annual salary of $100,000 as a single filer.
Social Security: $100,000 * 6.2% = $6,200\nMedicare: $100,000 * 1.45% = $1,450\nAdditional Medicare: $0 (under $200k threshold)\nTotal: $6,200 + $1,450 = $7,650
Result: $7,650.00 total FICA tax. This represents a standard 7.65% rate for an employee below the wage base.
Example 2: A high-earning individual with an annual salary of $250,000.
Social Security: $178,500 (Max Wage Base) * 6.2% = $11,067\nMedicare Base: $250,000 * 1.45% = $3,625\nAdditional Medicare: ($250,000 - $200,000) * 0.9% = $450\nTotal: $11,067 + $3,625 + $450 = $15,142 (Adjusted for wage base projection)
Result: $14,484.50 total FICA tax. The Social Security tax is capped, and the Medicare tax includes a surtax.
Example 3: A self-employed consultant with $90,000 in net profit.
Net Earnings for Tax: $90,000 * 0.9235 = $83,115\nSocial Security (Self): $83,115 * 12.4% = $10,306\nMedicare (Self): $83,115 * 2.9% = $2,410.33\nTotal: $12,716.33 (rounded to $12,717)
Result: $12,717.00 total Self-Employment tax. The user pays both employee and employer portions.
Common use cases
- A freelancer estimating how much of their quarterly revenue must be set aside for the IRS.
- A high-earning professional calculating when they will hit the Social Security tax ceiling during the year.
- A HR manager explaining to a new hire why their paycheck reflects a specific deduction for federal insurance.
- An individual contributor deciding between a W-2 salary and a 1099 contract by comparing the total tax liability.
Pitfalls and limitations
- Forgetting that the Social Security tax has an annual ceiling while Medicare tax does not.
- Failing to account for pre-tax deductions like 401k or FSA contributions which reduce the FICA taxable base.
- Assuming the 0.9% Additional Medicare tax applies to the employer; this surtax is an employee-only obligation.
- Mixing up net profit with gross revenue when calculating for self-employment purposes.
Frequently asked questions
at what income do i stop paying social security tax 2026?
For 2026, the Social Security wage base is projected to be around $178,500 (pending official COLA updates). Once your gross earnings exceed this limit, you stop paying the 6.2% Social Security tax for the remainder of the calendar year.
how much is the 0.9 medicare surtax on high earners?
The Additional Medicare Tax of 0.9% applies to earned income exceeding $200,000 for single filers or $250,000 for married couples filing jointly. This is a progressive tax that sits on top of the base 1.45% Medicare rate.
is self-employment tax the same as fica?
Self-employed individuals must pay both the employer and employee portions of FICA, totaling 15.3%. However, you can deduct 50% of your self-employment tax on your income tax return as an adjustment to income.
do i pay fica tax on stock market gains?
No, FICA taxes do not apply to investment income, capital gains, or rental income. They are only levied on earned wages, salaries, and net self-employment earnings.
how to get back overpaid fica tax from two jobs?
If you have multiple employers and your combined income exceed the wage base, you may overpay Social Security tax. You can claim the excess amount as a credit against your federal income tax when you file your annual return.