The FICA Social Security Calculator shows your employee, employer, and total payroll tax for Social Security and Medicare. It uses IRS and SSA rules for wage caps, Additional Medicare thresholds, and self-employment situations so you can budget confidently.
FICA & Social Security Calculator
What Is a FICA Social Security Calculator?
It estimates payroll taxes for Social Security and Medicare using current FICA rates, wage limits, and your pay details. FICA covers retirement, disability, survivor benefits, and Medicare. Employers match employee withholding, while self-employed workers pay both halves.
What Taxes Make Up FICA
| FICA Tax | What It Funds | Employee Rate | Employer Rate |
|---|---|---|---|
| Social Security (OASDI) | Retirement, disability, survivor benefits | 6.2% | 6.2% |
| Medicare | Hospital and medical insurance | 1.45% | 1.45% |
| Total | — | 7.65% | 7.65% |
Who Pays and How FICA Is Split
| Worker Type | Who Pays | Total FICA Rate |
|---|---|---|
| Employee | You pay 7.65% and your employer matches 7.65% | 15.3% |
| Self-employed | You pay both halves via self-employment tax | 15.3% |
How the Calculator Works
- Enter gross pay (hourly, weekly, monthly, or annual) and choose pay frequency.
- Select employment type (employee or self-employed) so the right split is applied.
- The calculator applies Social Security rates up to the wage base, Medicare to all wages, and Additional Medicare above thresholds.
- See employee withholding, employer share, total FICA, and estimated net pay after FICA.
Calculations follow IRS Publication 15 payroll rules and SSA wage base guidance.
Current FICA Rates and Wage Limits
| Tax Type | Rate | Wage Limit |
|---|---|---|
| Social Security | 6.2% employee / 6.2% employer | Applies up to the annual wage base |
| Medicare | 1.45% employee / 1.45% employer | No limit |
| Additional Medicare | 0.9% employee | Income over IRS thresholds (e.g., $200,000 single) |
How the Social Security Wage Base Affects Paychecks
Social Security tax stops once you reach the annual wage base set by the SSA, so higher earners may see take-home pay rise later in the year. Medicare continues on all wages, and Additional Medicare can apply above the threshold even after Social Security stops.
Medicare and Additional Medicare Tax
Medicare is 1.45% on all earnings with no cap. An extra 0.9% applies above IRS income thresholds (such as $200,000 for single filers). Employers withhold the extra amount when your wages cross the threshold, regardless of your final filing status.
Example FICA Calculations
| Annual Income | Social Security Tax | Medicare Tax | Total Employee FICA |
|---|---|---|---|
| $40,000 | $2,480 | $580 | $3,060 |
| $75,000 | $4,650 | $1,087.50 | $5,737.50 |
| $120,000 | $7,440 | $1,740 | $9,180 |
Social Security stops at the wage base; Medicare continues with Additional Medicare above thresholds.
Hourly vs Salaried Workers
| Category | Pay Calculation | FICA Considerations |
|---|---|---|
| Hourly | Rate × hours worked | Withholding varies with overtime and extra shifts |
| Salaried | Annual salary ÷ pay periods | Withholding is steadier; wage base can be reached faster for high earners |
FICA for Self-Employed Workers
| Tax Component | Rate | Who Pays |
|---|---|---|
| Social Security | 12.4% | Self-employed pays both halves |
| Medicare | 2.9% | Self-employed pays both halves |
| Total | 15.3% | Half is deductible when figuring AGI |
Common Mistakes to Avoid
- Assuming FICA stops entirely at the wage base (only Social Security stops; Medicare continues).
- Forgetting employers match the employee share.
- Ignoring the 0.9% Additional Medicare tax for high earners.
- Overlooking the self-employment tax deduction when you pay both halves.
- Guessing amounts instead of using current IRS and SSA limits.
Why Use a FICA Social Security Calculator
Manual math is slow and error-prone. This tool applies current rates, wage caps, and thresholds instantly, showing employee and employer shares plus net pay after FICA so you can plan take-home pay, quarterly estimates, and budgets.
FAQs
What does FICA stand for?
FICA stands for the Federal Insurance Contributions Act. It is the payroll tax that funds Social Security and Medicare, withheld from employee paychecks and matched by employers.
How much is taken out for FICA taxes?
Employees pay 6.2% for Social Security up to the annual wage base and 1.45% for Medicare on all wages, for a total of 7.65%. Employers match the same amount.
Is Social Security tax capped?
Yes. Social Security withholding stops after you reach the annual wage base set by the Social Security Administration. Medicare continues with no cap, and high earners may owe an additional 0.9% Medicare tax.
Do self-employed workers pay FICA taxes?
Self-employed workers pay both the employee and employer portions as self-employment tax. The combined rate is 15.3%, and half is deductible when figuring adjusted gross income.
Does the calculator include Medicare tax?
Yes. It includes the standard 1.45% Medicare tax, applies the 0.9% Additional Medicare tax above IRS thresholds, and stops Social Security withholding once the wage base is reached.
Conclusion
FICA affects every paycheck, but it does not have to be confusing. Use this calculator to see Social Security and Medicare withholding, understand when the wage base cuts off, and plan for self-employment tax if you work for yourself.
Methodology & assumptions
Last updated: May 2025
- Uses current IRS Publication 15 rates for Social Security, Medicare, and Additional Medicare withholding.
- Applies the SSA annual wage base; Social Security stops after the cap, Medicare continues with no cap.
- Self-employment scenarios apply the full 15.3% rate with a deduction for the employer portion.
- Results are estimates and may vary by pay period rounding and employer implementation.