What Is FICA Tax? Social Security and Medicare Explained

FICA Tax Rates in 2026: Complete Breakdown

FICA is actually two separate taxes running in parallel, each with its own rules, rates, and wage limits. Here's the full picture for 2026, sourced from IRS Publication 15:

Social Security Tax: 6.2% and the $176,100 Wage Cap

Social Security tax goes by its formal name — Old-Age, Survivors, and Disability Insurance, or OASDI. It funds two things: the retirement income you'll collect starting as early as age 62, and disability benefits through SSDI if you're ever unable to work before retirement.

How It Works

You pay 6.2% on every dollar of wages up to the annual wage base. In 2026, that limit is $176,100. Once your cumulative wages for the year cross $176,100, Social Security withholding stops completely for the rest of the calendar year — and your employer's matching 6.2% stops too.

What This Looks Like in Practice

For a worker earning $220,000 in 2026:

- Social Security applies to the first $176,100: $176,100 × 6.2% = $10,918

- The remaining $43,900 is exempt from Social Security entirely

- Total Social Security withheld for the year: $10,918

This is why you'll sometimes notice higher-than-normal net pay in your October or November paycheck — you've crossed the wage base and the Social Security deduction disappears. It's not an error; it's the system working exactly as designed.

How the Wage Base Is Set

The IRS adjusts the Social Security wage base annually based on the national average wage index. In 2025 it was $168,600; it jumped to $176,100 for 2026. Over the past decade, increases have averaged around $4,000–$8,000 per year. For payroll teams and high earners, tracking this number each January is part of the routine.

What Your Contributions Actually Earn You

Social Security contributions aren't lost — they build work credits. In 2026, you earn one credit for every $1,730 in covered earnings, up to four credits per year. Forty lifetime credits (10 years of work history) qualifies you for retirement benefits. Your eventual benefit amount is based on your 35 highest-earning years, inflation-adjusted. More earnings now, higher monthly benefit later.

Medicare Tax: 1.45% With No Wage Cap

Medicare tax funds federal health insurance for Americans 65 and older — and for certain people under 65 with qualifying disabilities. The key difference from Social Security: there is no wage cap. Medicare's 1.45% applies to every dollar you earn, whether you make $30,000 or $3 million.

Additional Medicare Tax for Higher Earners

The Affordable Care Act added a surcharge called the Additional Medicare Tax in 2013. This extra 0.9% kicks in on wages above:

- $200,000 for single filers

- $250,000 for married filing jointly

- $125,000 for married filing separately

Your employer is required to start withholding the extra 0.9% once your wages exceed $200,000 in a calendar year — regardless of your actual filing status. Here's where it gets nuanced: if a married couple each earn $175,000, neither employer withholds the surtax (each is below the $200,000 individual threshold). But their combined $350,000 exceeds the $250,000 MFJ threshold by $100,000, so they owe an additional $900 in Medicare tax at filing. That's a surprise for couples who don't plan for it.

Net Investment Income Tax (NIIT)

Alongside Medicare taxes, high earners also face the 3.8% Net Investment Income Tax on investment income — interest, dividends, capital gains, rents, royalties — when modified adjusted gross income exceeds the same thresholds. The NIIT isn't a payroll tax (it appears on Form 8960 at filing), but it's part of the same healthcare funding ecosystem. Something to know if you have significant investment income on top of wages.

FICA for Self-Employed Workers: The Self-Employment Tax

As a W-2 employee, you see 7.65% come out of your paycheck and your employer quietly pays another 7.65% on your behalf — you never interact with that second half. When you're self-employed, that changes. There's no employer to split the bill. You pay both sides yourself through what the IRS calls Self-Employment Tax (SE Tax): the full 15.3% rate (12.4% Social Security + 2.9% Medicare) on net self-employment income.

The Partial Deduction That Softens the Blow

Congress did include a partial offset: self-employed workers can deduct the employer-equivalent half of SE tax (7.65%) as an adjustment to gross income on Schedule 1 of Form 1040. This reduces adjusted gross income — not just taxable income — which makes it more valuable than a standard deduction. Here's what that looks like at $100,000 net SE income:

- SE tax owed: $100,000 × 15.3% = $15,300

- SE tax deduction (half): $7,650

- Tax savings on that deduction at 22% bracket: $7,650 × 22% = $1,683

- Net SE tax cost after deduction: $15,300 − $1,683 = $13,617

It doesn't eliminate the burden, but it's a meaningful reduction.

Quarterly Estimated Payments

Self-employed workers have no payroll withholding — which means if you do nothing, a very large bill shows up on April 15. The IRS expects quarterly estimated payments instead, due April 15, June 15, September 15, and January 15 of the following year. Underpayment triggers penalties — the 2026 IRS underpayment rate is 8% on the unpaid amount.

SE Tax Is on Net Income, Not Revenue

Self-employment tax applies to net profit — revenue minus business expenses — not gross revenue. This is why tracking every legitimate business expense matters for freelancers. Every dollar of deductible expense reduces SE tax (at 15.3%) as well as income tax.

Who Is Exempt From FICA Taxes?

FICA applies to virtually all earned income — but there are genuine exemptions that some workers qualify for.

Student FICA Exemption

Students employed by the college or university where they are enrolled are exempt from FICA on that school's wages, provided they are at least half-time enrolled. This covers on-campus jobs like tutoring, library work, and research assistantships — but not off-campus employment.

Nonresident Alien Workers on Specific Visas

Certain nonresident aliens on F-1, J-1, M-1, Q-1, and Q-2 visas are exempt from FICA during their authorized visa period. This exemption does not apply to permanent residents or workers on H-1B, O-1, or L-1 visas, who pay FICA like anyone else.

Members of Religious Orders

Members of qualified religious orders who have taken a vow of poverty may be exempt. The religious organization undergoes a separate IRS election process to exempt its members.

Certain Pre-1984 Government Employees

Some state and local government workers hired before April 1, 1984 are covered under alternative state pension systems rather than Social Security — they may not pay Social Security taxes. However, a 1986 rule change requires all government employees hired after that date to pay Medicare, even those exempt from Social Security.

Contractor Misclassification Note

One important clarification: if you're classified as an independent contractor (1099) rather than a W-2 employee, your client doesn't withhold FICA. But you're not exempt — you pay it yourself as Self-Employment Tax. Workers who believe they've been misclassified as contractors can file IRS Form SS-8 to request an official determination.

Real Dollar Impact: FICA at Different Income Levels

FICA taxes are regressive in one meaningful way: because Social Security has a wage cap, the effective FICA rate actually decreases as income rises above $176,100. A worker earning $80,000 pays 7.65% of total income in FICA. A worker earning $300,000 pays Social Security only on the first $176,100, plus Medicare on all $300,000 — and the surtax on the excess over $200,000. Their effective FICA rate ends up around 5.4% of total wages, lower than a middle-income earner's 7.65%.

Here's how FICA plays out at different income levels in 2026:

FICA vs Income Tax: How They Differ

They share real estate on your pay stub, but FICA and income tax are entirely different systems. Confusing them leads to planning mistakes.

Income Tax is Progressive; FICA is Flat

Federal income tax applies higher rates as income rises — from 10% to 37% across seven brackets. FICA is a flat percentage. A $25,000 worker and a $100,000 worker both pay exactly 7.65% of their wages in FICA. Their federal income tax rates are completely different.

Income Tax Is Reduced by Deductions; FICA Is Not

The $15,000 standard deduction, your traditional 401(k) contribution, your HSA deposit — none of these touch FICA. You pay Social Security and Medicare on your gross wages before any of those deductions come into play. This catches a lot of people off guard: pre-tax 401(k) contributions do reduce income tax (which is the main point of them), but they don't reduce your FICA bill at all.

Income Tax Funds General Government; FICA Funds Specific Programs

Federal income tax revenue flows into the general fund — it funds everything from defense to highway construction to foreign aid. FICA taxes are earmarked by law: Social Security goes into the Old-Age and Survivors Insurance (OASI) Trust Fund and the Disability Insurance (DI) Trust Fund; Medicare goes into the Hospital Insurance (HI) Trust Fund.

You Earn Benefits From FICA; Income Tax Has No Direct Return

This is the biggest difference in practical terms. Your FICA contributions establish your entitlement to Social Security retirement benefits (and disability benefits through SSDI) and Medicare coverage at 65. The more you earn and the longer you contribute, the larger your eventual benefit. Income tax payments confer no such individual benefit entitlement — they fund collective services.

Frequently Asked Questions