FICA Tax Calculator
Social Security and Medicare withholding
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Working out social Security and Medicare withholding is easier with FICA Tax Calculator, which answers as you type. Type Annual Wages ($) into FICA Tax; each keystroke re-runs the math. FICA Tax prints the result and its working. That makes FICA Tax handy for quick estimates anywhere. You can disconnect once FICA Tax has loaded; the arithmetic runs locally. Looking for fica calculator social security medicare withholding or free online fica tax calculator? FICA Tax covers both. Run FICA Tax twice to find the driving input. FICA Tax answers the next Regional question you meet.
What the defaults give
$80,000 of wages carries $6,120.00 of FICA for the year.
That is $4,960 of Social Security at 6.2% and $1,160 of Medicare at 1.45%, with no surtax because wages are below $200,000.
The formula
Social Security = 6.2% × min(wages, $176,100)
Medicare = 1.45% × wages
Additional Medicare = 0.9% × (wages − threshold), threshold $200,000 single or $250,000 joint
Total = the three added
These are the employee halves. An employer pays the same 6.2% and 1.45% on top, so the total cost of employing someone at $80,000 is $86,120 before any other payroll tax.
Worked examples
$80,000 → 4,960 + 1,160 = $6,120.00
$50,000 → 3,100 + 725 = $3,825.00
$176,100 → 10,918.20 + 2,553.45 = $13,471.65
$200,000 → 10,918.20 + 2,900 = $13,818.20
$300,000 → 10,918.20 + 4,350 + 900 = $16,168.20
$300,000 filing jointly → 10,918.20 + 4,350 + 450 = $15,718.20
The wage base is the cliff
Social Security tax stops at the wage base — $176,100 in this model — so every dollar beyond it costs only Medicare. That makes the effective rate fall as income rises above the cap: at $80,000 FICA is 7.65% of wages, at $176,100 it is 7.65%, and at $300,000 it is 5.39%. It is a regressive structure by design, since the benefit formula is also capped.
The wage base is indexed annually, which is why a figure that looks right this year will be stale in a few years. Check the current Social Security Administration number before using this for payroll, and remember the additional Medicare tax has no employer match — only the employee pays that 0.9%.
What is not in the figure
Federal income tax withholding, state payroll taxes such as unemployment insurance and disability, and any pretax deductions are all separate. Contributions to a traditional 401(k) reduce income tax withholding but not FICA, because the Social Security and Medicare bases are gross wages, not taxable income. That distinction surprises people who assume a 401(k) cuts every line on the stub.
Self-employed workers pay both halves — 12.4% for Social Security and 2.9% for Medicare — through self-employment tax, with half deductible against income tax. The calculator shows the employee share only, so double the result to compare with a contractor rate.
Frequently Asked Questions
How much FICA is withheld on $80,000?
$6,120 for the year: $4,960 of Social Security and $1,160 of Medicare, with no additional Medicare tax below $200,000.
What is the Social Security wage base?
$176,100 in this model. Wages above it are not subject to the 6.2% Social Security tax, only to Medicare.
When does the extra 0.9% Medicare tax start?
Above $200,000 for single filers and $250,000 for married filing jointly. At $300,000 single it adds $900.
Do 401(k) contributions reduce FICA?
No. They reduce income tax withholding but not Social Security or Medicare, which are calculated on gross wages.
Does the employer pay this too?
Yes, the employer matches 6.2% and 1.45%, doubling the cost of employing someone. The 0.9% additional Medicare tax has no employer match.
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