FICA (US)
The Federal Insurance Contributions Act tax that funds Social Security and Medicare, split equally between employer and employee at a combined rate of 15.3% of eligible wages.
What Is FICA?
Key Takeaways
- ✓FICA stands for the Federal Insurance Contributions Act, a 1935 law that requires employers and employees to each pay 7.65% of eligible wages toward Social Security and Medicare.
- ✓The 15.3% combined rate breaks down into 12.4% for Social Security (capped at $168,600 in 2024) and 2.9% for Medicare (no cap).
- ✓FICA isn't optional. It's withheld automatically from every paycheck, and employers must match the employee's contribution dollar for dollar.
- ✓Self-employed individuals pay the full 15.3% through the Self-Employment Contributions Act (SECA), though they can deduct the employer-equivalent portion on their tax return.
- ✓In fiscal year 2023, FICA taxes generated over $1.5 trillion in revenue, making it the second-largest source of federal income after individual income taxes (Treasury Department).
FICA is the payroll tax that funds two federal programs: Social Security (officially Old-Age, Survivors, and Disability Insurance, or OASDI) and Medicare (Hospital Insurance). Congress enacted it as part of the Social Security Act of 1935, during the Great Depression, to create a safety net for retirees and disabled workers. Every W-2 employee in the United States pays FICA. There are no exemptions based on income level, job title, or industry (with very narrow exceptions for certain religious groups and foreign government employees). The tax applies from the first dollar earned. For payroll teams, FICA represents a significant administrative responsibility. You must calculate it correctly every pay period, remit it on time, and report it accurately on quarterly 941 forms and annual W-2s. Getting it wrong triggers IRS penalties that escalate quickly. FICA also affects hiring costs directly. When a company offers a $100,000 salary, the true cost is $107,650 because the employer pays an additional $7,650 in FICA taxes. This 7.65% markup applies to every employee, making it one of the largest non-salary employment costs.
FICA Tax Rate Breakdown for 2024
FICA has two distinct components, each with its own rate, wage base, and rules. Understanding how they work separately is essential for accurate payroll processing.
| Component | Employee Rate | Employer Rate | Combined Rate | Wage Base Limit | Notes |
|---|---|---|---|---|---|
| Social Security (OASDI) | 6.2% | 6.2% | 12.4% | $168,600 (2024) | No tax on earnings above the cap |
| Medicare (HI) | 1.45% | 1.45% | 2.9% | No limit | Applies to all earnings |
| Additional Medicare Tax | 0.9% | 0% | 0.9% | >$200,000 (single) | Employee-only, no employer match |
| Total (under wage base) | 7.65% | 7.65% | 15.3% | $168,600 | Standard combined rate |
| Total (over wage base) | 2.35% | 1.45% | 3.8% | No limit | Only Medicare portion applies |
How to Calculate FICA Taxes
FICA calculation is straightforward for most employees, but the Social Security wage base cap and Additional Medicare Tax create edge cases that payroll teams must handle correctly.
Standard calculation example
An employee earning $80,000 annually, paid biweekly ($3,076.92 per paycheck). Social Security: $3,076.92 x 6.2% = $190.77. Medicare: $3,076.92 x 1.45% = $44.62. Total employee FICA per paycheck: $235.39. The employer matches this exactly, so total FICA per paycheck is $470.78. Over the year: $6,120 total (employee + employer combined).
When the Social Security cap applies
For an employee earning $200,000, Social Security tax stops once year-to-date earnings reach $168,600. The first $168,600 is taxed at 6.2% = $10,453.20 (employee share). Earnings from $168,601 to $200,000 ($31,400) are exempt from Social Security but still subject to Medicare. Payroll systems must track cumulative year-to-date wages and stop Social Security withholding at the cap. If an employee has two jobs and overpays Social Security, they claim a credit on their personal tax return. The employer doesn't get a refund for its share.
Additional Medicare Tax calculation
The 0.9% Additional Medicare Tax kicks in when individual wages exceed $200,000 in a calendar year ($250,000 for married filing jointly, $125,000 for married filing separately). Unlike standard Medicare, there's no employer match. Payroll systems must begin withholding the extra 0.9% once year-to-date wages pass $200,000, regardless of the employee's filing status. Filing status adjustments happen on the employee's personal tax return.
Employer FICA Obligations
Employers bear significant responsibility for FICA compliance. The IRS holds businesses personally liable for unpaid employment taxes, and this liability can extend to individual officers and directors.
Withholding and matching
Employers must withhold the employee's 7.65% share from each paycheck and pay a matching 7.65% from company funds. Both amounts must be deposited with the IRS according to a schedule based on the company's total tax liability. Most employers deposit either semi-weekly (for liabilities over $50,000) or monthly (for liabilities under $50,000). New businesses default to monthly deposits for the first year.
Deposit schedules and deadlines
Semi-weekly depositors must deposit taxes from Wednesday through Friday paydays by the following Wednesday, and taxes from Saturday through Tuesday paydays by the following Friday. Monthly depositors must deposit by the 15th of the following month. All deposits must be made electronically through the Electronic Federal Tax Payment System (EFTPS). The IRS doesn't accept paper checks for employment tax deposits.
Reporting requirements
Employers file Form 941 (Employer's Quarterly Federal Tax Return) four times per year, reporting total wages paid, FICA taxes withheld, and deposits made. Small employers with annual tax liability of $1,000 or less can file Form 944 annually instead. At year-end, FICA amounts must appear on each employee's W-2 in Boxes 4 (Social Security tax withheld) and 6 (Medicare tax withheld). Box 5 shows Medicare wages, and Box 3 shows Social Security wages (capped at $168,600).
FICA Penalties for Non-Compliance
The IRS takes employment tax violations seriously. Penalties escalate based on the type and duration of the failure.
| Violation | Penalty | Additional Consequences |
|---|---|---|
| Late deposit (1-5 days) | 2% of undeposited amount | Interest accrues from due date |
| Late deposit (6-15 days) | 5% of undeposited amount | IRS may assign a revenue officer |
| Late deposit (16+ days) | 10% of undeposited amount | Trust Fund Recovery Penalty risk |
| Deposit made by paper check | 10% penalty | EFTPS is mandatory for all employers |
| Failure to file Form 941 | 5% per month, up to 25% | Criminal prosecution possible for willful failure |
| Willful failure to pay (Trust Fund Recovery Penalty) | 100% of unpaid tax | Personal liability for responsible individuals |
Who Is Exempt from FICA?
Most workers pay FICA. The exemptions are narrow and specific.
Student workers (FICA student exemption)
Students enrolled at least half-time at a college or university who work for that same institution are exempt from FICA on those wages. The exemption doesn't apply to full-time employees who happen to take a class, or to students working for a different employer. The IRS applies a facts-and-circumstances test, and this exemption is one of the most audited areas of employment tax.
Religious exemptions
Members of recognized religious sects that oppose Social Security and Medicare benefits can apply for exemption by filing Form 4029. This is rare and requires proof of continuous membership and that the sect provides for its dependent members. Amish and Old Order Mennonite communities are the most common groups using this exemption.
Foreign government employees and nonresident aliens
Employees of foreign governments working in the US are exempt from FICA. Nonresident aliens on certain visa types (F-1, J-1, M-1, Q-1) are exempt during their student or exchange visitor status period. Once they become resident aliens for tax purposes, FICA applies normally.
Independent contractors
1099 independent contractors don't pay FICA. Instead, they pay the equivalent through SECA (Self-Employment Contributions Act) at the full 15.3% rate. This is why worker misclassification is a major IRS enforcement priority: every misclassified contractor represents lost employer FICA contributions.
FICA vs Federal Income Tax
FICA and federal income tax are both withheld from paychecks, but they're fundamentally different taxes with different rules.
| Feature | FICA Tax | Federal Income Tax |
|---|---|---|
| Purpose | Funds Social Security and Medicare | Funds general government operations |
| Rate | Flat 7.65% (employee share) | Progressive brackets: 10% to 37% |
| Employer contribution | Yes, matches employee's 7.65% | No employer contribution |
| Wage base cap | Social Security capped at $168,600 | No cap, but brackets change |
| Deductions/exemptions affect it? | No, FICA applies to gross wages | Yes, W-4 elections and deductions reduce it |
| Refundable? | Only for overpayment above wage base | Yes, through tax return filing |
FICA Statistics and Data [2026]
Key figures that put FICA's scale and impact into perspective for HR and payroll professionals.
FICA Compliance Best Practices for HR Teams
Practical steps to keep your FICA processing accurate and penalty-free.
- Track year-to-date wages against the Social Security wage base in real time. Don't rely on end-of-year corrections. Your payroll system should automatically stop Social Security withholding at the cap.
- Set up EFTPS well before your first payroll run. Account activation takes 5-7 business days, and missing your first deposit deadline because the account isn't ready triggers penalties.
- Reconcile Form 941 quarterly totals against your payroll register before filing. Discrepancies between reported and deposited amounts are one of the most common audit triggers.
- Monitor the Additional Medicare Tax threshold for high earners. The $200,000 trigger is per employer, not per employee's total household income, so you must begin withholding regardless of the employee's filing status.
- Keep a deposit calendar with reminders. Semi-weekly depositors have multiple deadlines each week, and one missed deposit can cascade into escalating penalties.
- Review worker classifications annually. The IRS specifically targets 1099 misclassification because it costs the government both the employer's FICA match and the simpler withholding mechanism.
Frequently Asked Questions
What does FICA stand for?
Do employers pay FICA on top of the employee's salary?
Can I get a refund if I overpaid FICA?
Are bonuses subject to FICA?
What happens if my employer doesn't pay FICA?
Is FICA the same as Social Security tax?
Written by Adithyan RK