FICA Tax Calculator 2025
Calculate your Social Security and Medicare taxes for 2025. Includes updated wage base limits, additional Medicare tax, and self-employment tax calculations.
Enter YTD earnings to calculate remaining SS tax
FICA Tax Summary
Per Annual Breakdown
Understanding FICA Taxes
How FICA Tax Works
FICA taxes are mandatory payroll taxes split equally between employees and employers. The 7.65% employee portion (6.2% Social Security + 1.45% Medicare) is matched by employers, totaling 15.3% going to the government. Social Security tax has a wage base limit that increases annually, while Medicare tax has no limit. High earners pay an additional 0.9% Medicare tax on income above certain thresholds, which employers don't match.
Benefits Funded
Your FICA taxes fund critical social insurance programs. Social Security provides retirement benefits (based on your 35 highest-earning years), disability insurance, and survivor benefits. Medicare provides health insurance for Americans 65 and older and certain younger people with disabilities. These programs form the foundation of America's social safety net, with current workers' contributions funding current beneficiaries.
Maximizing Your Benefits
While FICA taxes are mandatory, understanding them helps with financial planning. Earning up to the Social Security wage base for 35 years maximizes your retirement benefits. The self-employed can deduct the employer portion, reducing taxable income. High earners should plan for additional Medicare tax through increased withholding or estimated payments. Consider that FICA taxes stop on income above the SS wage base, effectively giving high earners a raise late in the year.
Common Misconceptions
Many believe FICA taxes go into personal accounts, but they fund current beneficiaries in a pay-as-you-go system. The Social Security wage base applies per employer, not per individual, so job changers might overpay. Additional Medicare tax has no employer match, unlike regular Medicare tax. Self-employed individuals don't pay double tax - they pay the combined employee and employer portions, with deductions offsetting some cost.
Frequently Asked Questions
What's the difference between FICA and federal income tax?
FICA taxes (7.65% for employees) fund specific programs - Social Security and Medicare. Federal income tax funds general government operations and varies based on income, deductions, and credits. FICA has fixed rates with a wage cap for Social Security, while income tax uses progressive brackets.
Do I stop paying Social Security tax after reaching the wage base?
Yes, Social Security tax (6.2%) stops once you earn $176,100 in 2025. However, Medicare tax (1.45%) continues on all wages with no limit, and high earners pay an additional 0.9% Medicare tax on income above certain thresholds.
Can I get a refund if I overpaid Social Security tax?
Yes, if you had multiple employers and total Social Security tax withheld exceeds the maximum ($10,918.20 for 2025), you can claim the excess as a credit on your tax return. This commonly happens when changing jobs mid-year.
How is self-employment tax different from regular FICA?
Self-employed individuals pay both employee and employer portions (15.3% total) on 92.35% of net self-employment income. However, you can deduct half of self-employment tax when calculating adjusted gross income, partially offsetting the higher rate.
When does Additional Medicare Tax apply?
The 0.9% Additional Medicare Tax applies to wages above $200,000 (single), $250,000 (married filing jointly), or $125,000 (married filing separately). Employers must withhold it once wages exceed $200,000, regardless of filing status. There's no employer match for this additional tax.
About This Calculator
Calculate 2025 FICA taxes including Social Security (6.2% up to $168,600) and Medicare (1.45% plus 0.9% Additional Medicare Tax). Compare employer and employee contributions.
Frequently Asked Questions
What is FICA tax and how much is it in 2025?
FICA (Federal Insurance Contributions Act) tax consists of two components: Social Security tax (6.2% on wages up to $176,100) and Medicare tax (1.45% on all wages, no limit). Total FICA tax = 7.65% for most employees. Example: $80,000 salary = $4,960 Social Security ($80,000 脳 6.2%) + $1,160 Medicare ($80,000 脳 1.45%) = $6,120 total FICA tax. Your employer matches this dollar-for-dollar, contributing another $6,120, making total FICA contributions $12,240. Self-employed individuals pay both halves (15.3% total) but can deduct the employer-equivalent portion (7.65%) as a business expense.
What is the Social Security wage base for 2025?
The 2025 Social Security wage base is $176,100, up from $168,600 in 2024 (4.5% increase). Only the first $176,100 of your combined wages and self-employment income is subject to the 12.4% Social Security tax (6.2% employee + 6.2% employer). Maximum Social Security tax = $176,100 脳 6.2% = $10,918 per person. Medicare has no wage base鈥攖he 2.9% tax applies to all earnings. If you have multiple jobs, total wages from all employers count toward the $176,100 limit. Excess Social Security tax withheld can be claimed as a credit on your tax return (Form 1040, Schedule 3, Line 11).
What is Additional Medicare Tax and when does it apply?
Additional Medicare Tax is a 0.9% surtax on wages exceeding: $200,000 (single/head of household), $250,000 (married filing jointly), or $125,000 (married filing separately). Unlike regular Medicare (1.45%), there is NO employer match for this additional tax鈥攅mployees pay the full 0.9%. Example: Single filer earning $220,000 pays regular Medicare ($220,000 脳 1.45% = $3,190) plus Additional Medicare (($220,000 - $200,000) 脳 0.9% = $180) = $3,370 total Medicare tax. Employers withhold Additional Medicare once wages exceed $200,000 in a year, regardless of filing status. If married filing jointly with combined income over $250,000, you may owe additional tax when filing (use Form 8959).
How is FICA tax different for self-employed individuals?
Self-employed individuals pay both the employee and employer portions of FICA, totaling 15.3% (12.4% Social Security + 2.9% Medicare) on 92.35% of net self-employment income. This is called Self-Employment (SE) tax. Example: $60,000 net profit 鈫?$60,000 脳 0.9235 = $55,410 脳 0.153 = $8,478 SE tax. However, you can deduct half of SE tax ($4,239) as an above-the-line deduction (reduces adjusted gross income). The Social Security portion still caps at the wage base ($176,100 脳 0.9235 = $162,626 max taxable SE income). If you also have W-2 wages, they count toward the Social Security wage base limit.
Can I get a refund if too much FICA tax is withheld?
Yes, but only for Social Security tax鈥擬edicare tax has no wage base limit, so there's no such thing as "too much" Medicare withholding. Excess Social Security occurs when: (1) You have multiple employers and combined wages exceed $176,100, or (2) A single employer withheld incorrectly. Example: Job A withholds $10,918 on $176,100, Job B withholds $3,000 on additional $50,000 = $13,918 total vs $10,918 maximum = $3,000 refundable. Claim the excess on Form 1040, Schedule 3, Line 11 as a credit against income tax owed. Employers cannot refund Social Security tax鈥攐nly the IRS can via your tax return.
Do bonuses and commissions have FICA tax withheld?
Yes, bonuses, commissions, and all other forms of compensation are subject to FICA tax at the same rates as regular wages. However, they may push you over thresholds: (1) Social Security wage base ($176,100)鈥攁mounts above this are exempt from the 6.2% Social Security tax, or (2) Additional Medicare threshold ($200k single/$250k married)鈥攁mounts above trigger 0.9% additional tax. Example: $150,000 salary + $60,000 bonus = $210,000 total. Social Security tax applies to first $176,100 ($10,918), Medicare applies to all $210,000 ($3,045), Additional Medicare applies to $10,000 over threshold ($90). Total FICA on bonus = $3,720 Social Security + $870 Medicare + $90 Additional = $4,680 (21.9% effective rate on $60k bonus).