FICA, FUTA, SUTA Explained: Every Payroll Tax in 2026

Open a U.S. pay stub and seven different lines come out of your wages before you ever see a dollar. Most of them are a single acronym, a percentage, and a number that does not match either of the percentages anyone has ever told you. The acronyms are real laws — FICA, FUTA, SUTA, SECA — and the percentages are real statutory rates, but the math everyone quotes ("payroll tax is 15.3%") almost never matches what an actual paycheck or 1099 actually does.

This guide takes apart every one of those lines. We cover the 2026 wage bases (Social Security jumped to $184,500 on January 1, an $8,400 increase from 2025),^[1] the rate at which each tax stops applying, the side that pays it — employee, employer, or both — and the points where the system breaks the simple math everyone learned. We also walk through what changes for self-employed filers under SECA, what employers actually owe for unemployment in California versus Texas, and what the 0.9% Additional Medicare layer means for high earners. By the end you should be able to read any pay stub or 1099 and account for every dollar.

The four payroll taxes that touch every paycheck

Federal and state law define four distinct payroll taxes that flow through every U.S. employer. Knowing which is which is the difference between reading a pay stub correctly and being confused for the rest of your career:

Two ideas to anchor everything that follows. First, FICA is the only one of these that comes out of an employee's paycheck visibly. FUTA and SUTA are employer-side taxes, paid quarterly to the IRS or state and never deducted from wages (with three narrow exceptions discussed in the SUTA section below). Most W-2 employees never see FUTA or SUTA on a pay stub and have no idea their employer pays them. Second, the 15.3% number you've heard is the sum of the two halves of FICA — 7.65% from the employee plus 7.65% from the employer — and it shows up unified on Schedule SE only for the self-employed.

The Internal Revenue Service publishes Publication 15 (the "Employer's Tax Guide") every January with that year's confirmed rates and wage bases, supplemented by Publication 15-T for federal income tax withholding tables. Together those two documents define how every paycheck is computed in 2026.^[2]

FICA — Social Security at 6.2% to $184,500

FICA is the Federal Insurance Contributions Act, codified in Internal Revenue Code §§3101 and 3111.^[3] It establishes two separate payroll taxes — Social Security at 6.2% and Medicare at 1.45% — for which the statutory burden is split evenly between employee and employer. The combined rate that flows through every paycheck is 7.65% withheld from the employee and 7.65% paid by the employer.

Social Security alone is the bigger of the two pieces. The 2026 Social Security wage base — formally the "contribution and benefit base" published annually by the Social Security Administration — is $184,500, up from $176,100 in 2025.^[1] That $8,400 increase reflects a 4.8% jump driven by the same wage-index growth that produced the 2.8% Cost-of-Living Adjustment for benefits.^[4]

The mechanic is straightforward. For every dollar of wages up to $184,500, the employer withholds 6.2% from the employee's paycheck and pays a matching 6.2% from its own funds. For every dollar above $184,500, no Social Security tax is withheld or paid by either side. The maximum employee Social Security contribution in 2026 is therefore $184,500 × 6.2% = $11,439, with an identical $11,439 employer match.

For someone earning exactly the wage base in a single job, that single calculation is the whole story. For someone earning more, the wage base creates a useful upper bound: a $300,000 wage earner pays the same $11,439 in Social Security tax as a $184,500 earner — a fact that has not gone unnoticed in the long-running debate over removing the wage base cap to extend the program's solvency.^[5]

FICA — Medicare at 1.45% with no cap

Medicare's Hospital Insurance tax is the second piece of FICA. The statutory rate is 1.45% on the employee side and 1.45% on the employer side — and unlike Social Security, there is no wage base. Every dollar of wages, from the first to the last, carries the 1.45% Medicare tax.^[6]

That single rule is the entire mechanic for almost every W-2 employee. A $50,000 earner pays $725 in Medicare withholding. A $500,000 earner pays $7,250. A $5 million earner pays $72,500. The 1.45% does not stop, which means high earners do most of the heavy lifting on the Medicare side of FICA even before the 0.9% Additional Medicare Tax kicks in.

The Medicare tax funds Medicare Part A — Hospital Insurance — which covers in-patient hospital stays, skilled nursing facility care, hospice care, and some home health care for Americans age 65 and older. Medicare Part B (outpatient medical) and Part D (prescription drugs) are funded primarily by general revenues and beneficiary premiums, not the 1.45% payroll tax.^[7]

The Additional Medicare Tax of 0.9%

Layered on top of the standard 1.45% Medicare is the Additional Medicare Tax of 0.9%, enacted by the Affordable Care Act in 2010 and codified in IRC §3101(b)(2). It applies only to the employee side — there is no employer match — and is triggered by wages above filing-status-specific thresholds:^[8]

These thresholds — like the NIIT thresholds discussed in our 2026 capital-gains guide — are not indexed for inflation. They have stood at the same nominal dollar figures since 2013, while average wages have grown roughly 35% over the same period. The share of households caught by the Additional Medicare Tax keeps expanding every year, even when the underlying wage-tax base is flat.

The employer-withholding rule has its own wrinkle. An employer must begin withholding the 0.9% as soon as wages paid to a single employee in a calendar year cross $200,000 — regardless of the employee's filing status. A married-filing-jointly employee earning $190,000 with a spouse earning $80,000 will have no withholding done on this 0.9% layer because no single employer's wages crossed $200,000. The couple's combined $270,000 puts them $20,000 above the MFJ threshold, and they owe 0.9% × $20,000 = $180 of Additional Medicare on the joint return — reconciled on Form 8959, filed with Form 1040.^[9]

The reverse case happens too. A single filer earning $225,000 from one employer triggers withholding on $25,000 of wages — but the same person filing jointly with a non-working spouse will have under-paid the Additional Medicare if they didn't change their W-4. The reconciliation again happens on Form 8959.

FUTA — federal unemployment at 0.6% effective

FUTA — the Federal Unemployment Tax Act under IRC §3301 — funds the federal share of unemployment insurance administration and the loan fund states draw on when their unemployment trust funds run dry. It is paid by employers only. No FUTA comes out of any employee's paycheck.^[10]

The statutory FUTA rate is 6.0% on the first $7,000 of each employee's annual wages. The $7,000 wage base has not changed since 1983 — over four decades of inflation has eroded the FUTA wage base down to roughly a quarter of its original real value, which is one reason FUTA collections fund a shrinking share of the unemployment system.^[11]

For most employers the headline 6.0% rate is misleading. Employers receive a credit of up to 5.4% for state unemployment taxes paid in full and on time. After the credit, the effective FUTA rate drops to 0.6%, capping the FUTA cost at $42 per employee per year. The credit is claimed on Form 940, the annual FUTA reconciliation return filed by January 31 of the following year (extended to February 10 if all deposits were made on time during the year).^[10]

The credit reduction is where things get interesting. When a state's unemployment trust fund runs out of money, the state borrows from the federal Title XII loan fund. If the loan is not repaid by November 10 of the second consecutive year of outstanding balances, the credit drops by 0.3 percentage points per year — raising the effective FUTA rate in that state. The IRS and Department of Labor publish the credit-reduction list annually in Schedule A of Form 940.

For tax year 2025 (filed in early 2026), two jurisdictions were classified as credit-reduction states: California with a 1.2% credit reduction and the U.S. Virgin Islands with a 4.5% credit reduction.^[12] California employers paid an effective FUTA rate of 1.8% (0.6% baseline + 1.2% reduction = $126 per employee), and Virgin Islands employers paid 5.1% ($357 per employee). For tax year 2026, both jurisdictions are expected to face additional 0.3-point reductions if their loans are not repaid by the November 10, 2026 deadline — projecting a California rate of 2.1% and Virgin Islands rate of 5.4% under default-path assumptions.

SUTA — state unemployment, where the variance lives

SUTA — State Unemployment Tax Act — is the employer-paid tax that actually funds state unemployment insurance benefits. Every state operates its own program with its own wage base, rate schedule, and experience-rating mechanism. There is no single "SUTA rate" — only fifty-three (counting D.C., Puerto Rico, and the U.S. Virgin Islands).^[13]

The wage-base variance alone is dramatic. For 2026:

The wage base is only half the story. Rates within each state vary widely based on the employer's experience rating — a number that reflects how much unemployment insurance has been paid to former employees of that specific employer. A brand-new employer in California faces a new-employer rate of 3.4% on the $7,000 wage base; a long-established employer with low turnover can drop below 1.0%; an employer with high turnover and frequent claims can climb above 6.0%.^[14]

Three states collect a small employee SUTA contribution in addition to the employer share: Alaska (0.5% of wages, capped at the state wage base), New Jersey (0.425% in 2026, capped at the state wage base — a number every NJ employee sees on their pay stub as "NJ SUI"), and Pennsylvania (0.07% on all wages with no cap).^[13] Employees in the other forty-seven states never see a SUTA line on their pay stub.

SECA — the self-employed pay both halves

SECA — the Self-Employment Contributions Act under IRC §1401 — is the self-employed equivalent of FICA. It applies to net earnings from self-employment of $400 or more in a year and combines both halves of Social Security and Medicare into a single 15.3% tax paid by the self-employed worker.^[15] A Schedule C sole proprietor, a 1099 contractor, a freelancer, a side-hustler making over $400 in gig income — all owe SECA on the net profit from that activity.

The mechanic has three peculiar pieces:

1. 92.35% multiplier. Only 92.35% of net SE earnings is subject to SE tax. The reduction represents the employer-side FICA that a W-2 worker would have had paid on their behalf and never been taxed on. Net SE earnings of $100,000 are multiplied by 0.9235 to get $92,350 of taxable SE earnings before the rate is applied.
2. 15.3% combined rate up to the Social Security wage base. 12.4% Social Security + 2.9% Medicare = 15.3% combined. For 2026, the 12.4% Social Security portion applies only up to $184,500 of combined wages plus 92.35%-adjusted SE earnings; the 2.9% Medicare portion applies to all SE earnings with no cap.
3. Half is deductible. The "employer-equivalent" half of SE tax is deductible as an above-the-line adjustment on Schedule 1, Line 15. This brings the SE worker into rough parity with W-2 employees, whose employer-paid FICA is not part of their taxable income.

A worked example. Maya is a Brooklyn graphic designer with $80,000 of net Schedule C profit in 2026 (after deducting her business expenses). Her SE tax computation:

• SE-taxable base: $80,000 × 0.9235 = $73,880.
• Social Security portion: $73,880 × 12.4% = $9,161.12 (below the $184,500 wage base).
• Medicare portion: $73,880 × 2.9% = $2,142.52.
• Total SE tax: $11,303.64.
• Above-the-line deduction (half of SE tax): $5,651.82 reduces her AGI.

That $11,303.64 is on top of any federal income tax she owes on the same $80,000. SECA does not replace income tax — it stacks on top. The combined federal effective rate on $80,000 of net SE earnings is roughly 28%–30% for a single filer in the 22% bracket: 22% federal income tax (post-deduction) plus ~14% SECA after the deduction offset.

For self-employed filers with high earnings, SECA layers stack the same way W-2 wages do. Above the $184,500 Social Security wage base, the Social Security portion stops but the 2.9% Medicare portion continues. Above the $200,000 single / $250,000 MFJ thresholds, the 0.9% Additional Medicare Tax adds on top of the 2.9% — making the effective Medicare burden on high-earning SE income 3.8% rather than 2.9%. Combined with state income tax and federal income tax, a high-earning consultant in California can hit an effective marginal rate above 50%.

Federal income tax withholding — the seventh line

Federal income tax withholding is technically separate from FICA, but every pay stub includes it on the same withholding statement. Under IRC §3402, employers must withhold a portion of each employee's wages based on the employee's Form W-4 elections and the wage-bracket method or percentage method tables published in IRS Publication 15-T.^[16]

The 2026 withholding tables incorporate the inflation-adjusted brackets and standard deductions published in Revenue Procedure 2025-32 — single standard deduction $15,750, MFJ $31,500, HoH $23,625 — and the seven federal brackets running from 10% to 37%.^[17] The 2025 numbers, applicable to returns being filed this spring, came from Revenue Procedure 2024-40 and are slightly lower: standard deduction $15,000 single, $30,000 MFJ.^[18]

Unlike FICA — where withholding equals the final liability for most employees — federal income tax withholding is an estimate that gets reconciled at filing time. Over-withholding produces a refund; under-withholding produces a tax bill plus potentially a penalty under IRC §6654 if total payments were less than 90% of the year's tax or 100% of last year's tax (110% if AGI exceeded $150,000).^[19]

Two W-4 elections matter the most for matching withholding to actual liability. Step 2 (Multiple Jobs) is the line a dual-income household must complete correctly — otherwise both employers withhold as if they were the only employer, under-collecting at the household level. Step 4(c) (Extra Withholding) is the line a household uses to add a flat dollar amount per pay period to cover known under-withholding situations (a side business, capital gains, the Additional Medicare layer for a couple where neither employer crossed $200,000 alone).

Three case studies with the full math

Case 1: The single W-2 employee at $95,000

Daniel, 31, is a software developer in Atlanta. His 2026 gross wages: $95,000. Single filer. No side income. His Georgia state income tax rate for 2026 is 5.19% (post-HB 111 conformity, effective January 1, 2026).

• Social Security: $95,000 × 6.2% = $5,890 (below the $184,500 cap)
• Medicare: $95,000 × 1.45% = $1,377.50
• Additional Medicare: $0 (wages below $200,000)
• Federal income tax (TY2026, single, standard deduction): taxable income $95,000 − $15,750 = $79,250. Tax via bracket lookup: $11,597.50 + 22% × ($79,250 − $50,400) = $17,944.50. ≈ $17,945
• Georgia state tax: $95,000 × 5.19% ≈ $4,931
• Total federal + state + FICA: $30,143.50. Effective rate: 31.7%. Take-home: $64,856.

The employer side adds another $5,890 in Social Security match, $1,377.50 in Medicare match, $42 in effective FUTA (after credit), and roughly $189 in Georgia SUTA at the 2.7% new-employer rate on the $9,500 GA wage base. Total payroll-tax cost to Daniel's employer above and beyond his gross wage: roughly $7,498 — meaning Daniel's true cost to the firm is $102,498, of which he sees $64,856 after taxes.

Case 2: The MFJ couple at $310,000 combined, both W-2

Priya and Andrew, both 38, are dual-income in Brooklyn. Priya earns $185,000 as a marketing director; Andrew earns $125,000 as a public school principal. They file jointly.

• Priya's Social Security: $184,500 × 6.2% = $11,439 (capped at wage base; she crosses by $500 mid-December)
• Andrew's Social Security: $125,000 × 6.2% = $7,750
• Combined Medicare (1.45%): $310,000 × 1.45% = $4,495
• Additional Medicare: MFJ threshold $250,000. Excess: $60,000. Tax: $540. (Employer withholding likely under-collected this — neither employer's wages crossed $200,000 alone.)
• Federal income tax (TY2026 MFJ, standard deduction): $310,000 − $31,500 = $278,500 taxable. Tax via bracket: $32,580 + 24% × ($278,500 − $206,700) = $49,812. ≈ $49,812
• NY state income tax (TY2026 progressive brackets): roughly $17,800 at top marginal 6.85% combined with NYC personal income tax bringing combined state+city to about $24,800.
• Total federal + state + FICA: $98,876. Effective rate: 31.9%. Take-home (without NYC tax): $211,124.

The Additional Medicare under-withholding is the subtle trap. Both employers withheld 1.45% standard Medicare and stopped — the 0.9% layer only kicks in for an employer when its own wages to the employee cross $200,000. Priya's individual wages of $185,000 stop short; Andrew's $125,000 doesn't come close. They owe $540 of Additional Medicare on Form 8959 that no W-4 step covered automatically. If they did not increase Step 4(c) extra withholding by ~$45/month, this lands as a $540 tax bill in April 2027.

Case 3: The 1099 contractor at $130,000 net

Carlos, 44, is a freelance management consultant in Austin (Texas — no state income tax). 2026 net Schedule C profit after business expenses: $130,000. Filing single. No employees, sole proprietor.

• SE-taxable base: $130,000 × 0.9235 = $120,055
• Social Security portion of SE tax: $120,055 × 12.4% = $14,886.82 (below $184,500 cap)
• Medicare portion of SE tax: $120,055 × 2.9% = $3,481.60
• Total SE tax: $18,368.42
• Above-the-line deduction (half of SE tax): $9,184.21 reduces AGI
• Federal income tax (TY2026 single, standard deduction): AGI = $130,000 − $9,184.21 = $120,815.79. Taxable = $120,815.79 − $15,750 = $105,065.79. Tax via bracket: $17,168.50 + 24% × ($105,065.79 − $103,350) = $17,580.30
• Texas state tax: $0
• Total federal + SE tax: $35,948.72. Effective rate on $130,000: 27.7%. Take-home: $94,051.28.

The single biggest difference between Carlos and a W-2 worker earning the same $130,000 — without state income tax confounding the comparison — is that Carlos pays the full $18,368.42 of SE tax himself. A W-2 worker would have paid only $9,945 of FICA, with the employer covering the other $9,945. Carlos absorbs the "employer half" of FICA out of his consulting rate. Done correctly, his consulting rate should be roughly 7.65% higher than the equivalent W-2 wage to keep him whole — a calculation many newer freelancers do not make explicitly when negotiating their first 1099 contracts.

Carlos also owes quarterly estimated payments under IRC §6654 because he has no withholding to cover the year's tax liability. The four 2026 deadlines are April 15, 2026, June 16, 2026 (the 15th is a Sunday), September 15, 2026, and January 15, 2027. Safe harbor for him is 110% of 2025 total tax because his prior-year AGI was over $150,000. Missing an estimated payment by more than the safe harbor produces a non-deductible penalty that compounds quarterly at the federal short-term rate plus 3 percentage points.

Five common payroll-tax mistakes

1. Forgetting Step 2 of the W-4 in a dual-income household

The W-4's Step 2 (Multiple Jobs) is the most-skipped section on the form, and it is the single most common cause of under-withholding for married couples. Without Step 2, each spouse's employer withholds as if their wage was the only household wage — applying the MFJ standard deduction and lower brackets to each independently. The result is consistently under-collected federal income tax that lands as an April surprise. Use the IRS's online withholding estimator at irs.gov/W4App to compute the correct Step 4(c) extra-withholding amount.^[20]

2. Counting on the employer to handle Additional Medicare

The 0.9% Additional Medicare layer is only automatically withheld when a single employer's wages to a single employee cross $200,000 in a year. A dual-income MFJ household where neither spouse alone hits $200,000 will owe Additional Medicare on the joint return without any employer having pre-collected it. Form 8959 reconciles, but if the under-payment is large enough to trigger IRC §6654, a non-deductible penalty applies.

3. Misclassifying 1099 contractors who should be W-2 employees

Employers who misclassify workers as 1099 contractors when they should be W-2 employees avoid the 7.65% employer FICA match, FUTA, SUTA, and (in most states) workers' compensation. The IRS uses a "common law" three-factor test — behavioral control, financial control, and relationship — to determine the correct classification. Penalties for misclassification under IRC §3509 include retroactive payroll tax, plus 100% of the unwithheld employee FICA. The Department of Labor and state agencies have aggressively expanded enforcement since 2023, particularly in gig-economy and creative industries.^[21]

4. Ignoring the Schedule H requirement for household employers

Paying a nanny, regular house cleaner, or in-home senior caregiver $2,800 or more in 2026 triggers Schedule H — the household employer return filed with Form 1040. The $2,800 threshold is per household per individual employee; pay two nannies $1,500 each and Schedule H does not apply. The 7.65% FICA withholding plus 7.65% employer match plus 0.6% FUTA plus state SUTA all flow through Schedule H. The IRS estimates that fewer than 20% of household employers comply — a quiet but expensive area of non-compliance when caught.^[22]

5. Forgetting to claim excess Social Security from multiple jobs

If you worked two or more jobs in 2026 and your combined wages exceeded $184,500, you over-paid Social Security. The credit is claimed on Schedule 3, Line 11 of Form 1040 — the IRS will not return it automatically. The 2025 dollar-for-dollar limit was $176,100 × 6.2% = $10,918.20; the 2026 limit is $184,500 × 6.2% = $11,439. Any employee Social Security withheld above $11,439 across multiple employers is recoverable on the return — but only if you remember to claim it.

An action checklist for this week

1. Pull your most recent pay stub. Confirm the four lines: Federal Income Tax (FIT), Social Security (FICA-SS or OASDI), Medicare (FICA-Med), and State Income Tax. Verify Medicare is 1.45% of gross and Social Security is 6.2% of gross-up-to-$184,500. If either is off by more than a few cents, ask payroll why.
2. If you switched jobs in 2026, run the Social Security over-withholding check. Add all employer-side Social Security withholdings across jobs. If the total exceeds $11,439, the excess is recoverable on Schedule 3, Line 11.
3. If you are married, both work, and combined wages exceed $250,000, model the Additional Medicare layer. The 0.9% on combined wages above $250,000 is rarely pre-withheld at the right amount. Use Form 8959 to estimate now and adjust Step 4(c) of your W-4 to cover.
4. If you have any 1099 income, separately compute SECA on Schedule SE. Net SE earnings × 0.9235 × 15.3% (capped at $184,500 Social Security base; 2.9% Medicare continues above). Half is deductible above-the-line.
5. If you owe more than $1,000 of unwithheld 2026 tax, make a quarterly estimated payment. The April 15, June 16, September 15, and January 15 deadlines are the IRC §6654 safe-harbor checkpoints. Pay via IRS Direct Pay (irs.gov/directpay) or EFTPS.
6. If you are an employer, audit your FUTA credit reduction exposure. California employers should budget an effective FUTA rate of 1.8% for 2026 (potentially rising to 2.1% if California's Title XII loan remains outstanding by November 10, 2026). Virgin Islands employers should budget 5.1%+. Every other state is at the standard 0.6%.
7. If you employ a household worker paid $2,800+ annually, prepare Schedule H. The household-employer FICA, FUTA, and federal income tax flow through Schedule H, filed with Form 1040 by April 15, 2027.
8. Plug your numbers into the CalcLeap paycheck calculator. Confirm gross-to-net matches your pay stub line by line.

Frequently asked questions