What is FICA Tax?
FICA stands for the Federal Insurance Contributions Act. It's a United States federal payroll tax that funds Social Security and Medicare programs. These programs provide benefits to retirees, disabled individuals, and children of deceased workers.
FICA taxes are automatically deducted from employee paychecks and matched by employers. Self-employed individuals pay both the employee and employer portions, known as the Self-Employment Tax (SE Tax).
Key Point
FICA taxes are mandatory for nearly all U.S. workers. In 2024, the combined FICA tax rate is 15.3% (7.65% employee + 7.65% employer), which includes 12.4% for Social Security and 2.9% for Medicare.
FICA Tax Components
1. Social Security Tax (OASDI)
Social Security, officially called Old-Age, Survivors, and Disability Insurance (OASDI), provides:
- Retirement benefits for workers aged 62 and older
- Disability benefits for workers who become disabled
- Survivor benefits for families of deceased workers
| Category | Employee Rate | Employer Rate | Total Rate |
|---|---|---|---|
| W-2 Employee | 6.2% | 6.2% | 12.4% |
| Self-Employed | 12.4% (pays both) | 12.4% | |
Social Security Wage Base Limits
Social Security tax only applies up to a certain income level each year, called the wage base limit:
| Tax Year | Wage Base Limit | Max SS Tax (Employee) | Max SS Tax (Self-Employed) |
|---|---|---|---|
| 2024 | $168,600 | $10,453.20 | $20,906.40 |
| 2023 | $160,200 | $9,932.40 | $19,864.80 |
| 2022 | $147,000 | $9,114.00 | $18,228.00 |
| 2021 | $142,800 | $8,853.60 | $17,707.20 |
2. Medicare Tax (HI)
Medicare, also called Hospital Insurance (HI), provides health insurance for people aged 65 and older, and for some younger people with disabilities.
Key differences from Social Security:
- No wage base limit - all earned income is subject to Medicare tax
- Lower base rate (1.45% each for employee and employer)
- Additional 0.9% tax on high earners (employee only)
3. Additional Medicare Tax
Since 2013, high-income earners pay an additional 0.9% Medicare tax on wages exceeding certain thresholds:
| Filing Status | Threshold |
|---|---|
| Single | $200,000 |
| Married Filing Jointly | $250,000 |
| Married Filing Separately | $125,000 |
| Head of Household | $200,000 |
Important Note
The Additional Medicare Tax is paid only by employees - employers do not match this tax. Also, employers must begin withholding when wages exceed $200,000, regardless of filing status. Any adjustment is made when you file your tax return.
How to Calculate FICA Tax
For W-2 Employees
For Self-Employed Individuals
Employee vs. Self-Employed FICA Comparison
| Tax Component | W-2 Employee | Self-Employed |
|---|---|---|
| Social Security | 6.2% (employer pays another 6.2%) | 12.4% (pays both portions) |
| Medicare | 1.45% (employer pays another 1.45%) | 2.9% (pays both portions) |
| Additional Medicare | 0.9% on income over threshold | 0.9% on income over threshold |
| Total Rate (base) | 7.65% | 15.3% |
| Tax Deduction | None | 50% of SE tax is deductible |
| Income Adjustment | None needed | 92.35% of net earnings |
FICA Tax Exemptions
While most workers pay FICA taxes, some exemptions exist:
- Religious exemptions: Members of certain religious groups opposed to insurance may be exempt
- Student workers: Students employed by their school may be exempt under specific conditions
- Foreign government employees: Workers for foreign governments or international organizations
- Nonresident aliens: Certain visa holders (F-1, J-1, M-1, Q-1) may be exempt
- State/local government employees: Those covered by equivalent retirement systems
When are FICA Taxes Due?
For Employees
FICA taxes are withheld from each paycheck throughout the year. Your employer handles the calculation, withholding, and payment to the IRS.
For Self-Employed
Self-employed individuals must make quarterly estimated tax payments:
- Q1 (Jan-Mar): Due April 15
- Q2 (Apr-May): Due June 15
- Q3 (Jun-Aug): Due September 15
- Q4 (Sep-Dec): Due January 15 of following year
Tips for Managing FICA Taxes
- Review your pay stubs: Verify that the correct amounts are being withheld
- Track the wage base: Once you hit the Social Security wage base, withholdings should stop
- Consider S-Corp election: Self-employed individuals may reduce SE tax through S-Corp structuring
- Claim the SE deduction: Don't forget to deduct 50% of self-employment tax
- Plan for Additional Medicare Tax: High earners should plan for the extra 0.9%
Frequently Asked Questions
Is FICA the same as Social Security?
No, FICA includes both Social Security (6.2%) and Medicare (1.45%) taxes. Social Security is the larger component but FICA encompasses both programs.
Do I get a refund if I overpay FICA?
If you work multiple jobs and your combined wages exceed the Social Security wage base, you may have paid excess Social Security tax. You can claim this excess as a credit on your tax return.
Does FICA apply to all income?
FICA only applies to earned income (wages, salaries, self-employment income). It does not apply to investment income, rental income, pensions, or most other non-earned income.
Why do self-employed people pay more?
Self-employed individuals pay both the employee and employer portions because they are essentially both. However, they can deduct half of the SE tax from their gross income, partially offsetting this burden.
Will FICA rates change?
FICA rates have remained relatively stable for decades. However, the Social Security wage base increases annually based on wage growth. Congress could change rates through legislation, but this is rare.