FICA Tax Calculator: Social Security & Medicare 2026

What Is the FICA Tax Calculator?

The FICA Tax Calculator estimates your 2026 Federal Insurance Contributions Act taxes in seconds. Enter your annual wages or net self-employment income, select whether you are a W-2 employee or self-employed, choose your filing status, and the calculator instantly returns Social Security tax, Medicare tax, the Additional Medicare Tax for high earners, your employer’s matching contribution, and — for self-employed individuals — the deductible half of the self-employment tax.

FICA taxes fund two of the largest federal benefit programs in the country. Social Security covers retirement income, disability payments, and survivor benefits, while Medicare provides hospital and medical insurance for people 65 and older and qualifying individuals with disabilities. Together, they consume a predictable share of every dollar earned — a share that can surprise workers who have never added up all the individual lines on their pay stub.

For employees, understanding FICA is important for paycheck planning and spotting withholding errors. For freelancers and independent contractors, it is even more critical: the self-employment tax is often the largest single tax obligation for a new business owner, and the deduction for half of that tax can meaningfully reduce adjusted gross income. If you are calculating your total take-home pay, the Payroll Tax Calculator includes income tax withholding alongside FICA in one combined estimate.

This calculator helps you:

• See every component separately: Break down Social Security, Medicare, and the Additional Medicare Tax in one view.
• Compare employee vs. self-employed: Understand how the same income creates different tax obligations depending on employment type.
• Find your SE deduction: Self-employed users see the exact deductible amount that reduces their AGI.
• Understand the employer cost: Employees see how much their employer pays in FICA on top of their salary.

How to Use the FICA Tax Calculator

Step 1 — Enter Annual Wages. For W-2 employees, enter your gross annual wages before any deductions. For self-employed individuals, enter your net self-employment income — gross revenue from the business minus ordinary business expenses but before any FICA-related deductions. If you are not sure what your annual income will be, the Annual Income Calculator can help you build a reliable full-year estimate from hourly rates or pay stubs.

Step 2 — Select Employment Type. Choose W-2 Employee if your employer issues a W-2 and withholds payroll taxes on your behalf. Choose Self-Employed if you receive 1099 income, run a sole proprietorship, or operate a single-member LLC taxed as a disregarded entity. The employment type determines whether you pay only the employee half of FICA or both halves as self-employment tax.

Step 3 — Select Filing Status. Your filing status affects the Additional Medicare Tax threshold. Single filers and heads of household cross the threshold at $200,000 of income. Married couples filing jointly have a combined threshold of $250,000. Married couples filing separately face a lower threshold of $125,000, which can make the Additional Medicare Tax a significant planning consideration.

Reading the Results. The primary output — Total FICA / SE Tax — shows your full obligation. Below that, each component is itemized. For employees, Employer SS Match and Employer Medicare Match reveal the amount your employer pays on your behalf beyond your salary. For self-employed individuals, SE Tax Deduction shows the amount you can subtract from gross income on Schedule 1 of Form 1040 before computing your regular income tax.

Understanding FICA Taxes

FICA has its origins in the Social Security Act of 1935, which established the payroll tax mechanism to fund the new retirement program. Medicare was added in 1965 as part of the Social Security Amendments, funded by a separate payroll tax imposed on the same wage base. The Social Security Administration notes that the structure was intentional: a dedicated payroll tax rather than general revenue funding was chosen to create a contributory insurance program where workers would have a clear claim to their earned benefits.

The 2026 Social Security wage base is $184,500, as published by the Social Security Administration. The wage base adjusts each year based on changes in average national wages indexed by the SSA. Since 1990, the Medicare tax has had no wage base cap at all — every dollar of wages is subject to the 1.45% rate, and high earners pay an additional 0.9% on income above the filing-status threshold established by the Affordable Care Act.

For self-employed individuals, the economics are slightly different from those of employees but the burden is equivalent. An employee earning $75,000 pays $5,737.50 in FICA, while the employer pays another $5,737.50. A self-employed person earning $75,000 pays the combined $11,475, but applies it to only 92.35% of gross earnings and deducts half of the base SE tax from gross income. The net effect is broadly similar in terms of total dollars flowing to the government per dollar of labor, which is the policy intent.

The Additional Medicare Tax, introduced for tax years beginning in 2013, is a targeted surtax on high-income earners. According to IRS guidance on the Additional Medicare Tax, employers begin withholding once wages from that employer exceed $200,000 regardless of filing status, but the final tax liability is determined by filing status on the annual return. A married couple filing jointly does not owe the tax until their combined wages and self-employment income exceed $250,000, which may mean overwithholding or underwithholding during the year that gets corrected at filing time.

For residents of states that levy their own income tax on top of FICA, the combined burden can be substantial. For example, the Pennsylvania Income Tax Calculator shows how Pennsylvania’s flat 3.07% state rate, local Earned Income Tax, and Unemployment Compensation contribution stack on top of federal FICA obligations.

Understanding FICA also matters for long-term retirement planning. The Social Security benefits you eventually receive are based on your 35 highest-earning years of Social Security-covered wages. Higher covered earnings in your working years translate to higher monthly Social Security checks in retirement. This connection between the tax and the benefit makes the FICA wage base especially significant for workers who are close to, at, or above the cap.

How the Formula Works

The FICA calculation follows a clear structure defined in IRS Publication 15 (Circular E) for employees and IRS Publication 334 for the self-employed.

For W-2 Employees:

Social Security Tax = min(Annual Wages, $184,500) × 6.2%
Medicare Tax = Annual Wages × 1.45%
Additional Medicare Tax = max(0, Annual Wages − Threshold) × 0.9%
Total Employee FICA = SS Tax + Medicare Tax + Additional Medicare Tax

Threshold by Filing Status:

Filing Status	Additional Medicare Threshold
Single	$200,000
Married Filing Jointly	$250,000
Married Filing Separately	$125,000
Head of Household	$200,000

For example, a single employee earning $250,000:

SS Tax     = $184,500 × 6.2% = $11,439.00
Medicare   = $250,000 × 1.45% = $3,625.00
Add'l Med  = ($250,000 − $200,000) × 0.9% = $450.00
Total FICA = $15,514.00

For Self-Employed Individuals:

Net Earnings = Gross SE Income × 92.35%
SE SS Tax = min(Net Earnings, $184,500) × 12.4%
SE Medicare Tax = Net Earnings × 2.9%
Additional Medicare Tax = max(0, Net Earnings − Threshold) × 0.9%
Total SE Tax = SE SS Tax + SE Medicare Tax + Additional Medicare Tax
SE Tax Deduction = (SE SS Tax + SE Medicare Tax) ÷ 2

The 92.35% factor reflects the IRS rule that self-employed individuals compute SE tax on a slightly reduced base to account for the fact that the employer half of payroll tax would not itself be taxable if you were a W-2 employee. Applied to $60,000 gross SE income:

Net Earnings = $60,000 × 92.35% = $55,410
SE SS Tax    = $55,410 × 12.4% = $6,870.84
SE Medicare  = $55,410 × 2.9% = $1,606.89
Total SE Tax = $8,477.73
SE Deduction = ($6,870.84 + $1,606.89) ÷ 2 = $4,238.87

The deduction is taken above the line on Schedule 1, reducing adjusted gross income before calculating regular income tax. This is why self-employed tax planning — especially optimizing retirement contributions, health insurance deductions, and the SE deduction together — can meaningfully reduce the total tax bill.

FICA Tax Examples

Example 1: Average W-2 employee

Maria earns $75,000 per year as a salaried employee. She files as single.

SS Tax    = $75,000 × 6.2%  = $4,650.00
Medicare  = $75,000 × 1.45% = $1,087.50
Add'l Med = $0 (below $200k threshold)
Total     = $5,737.50

Maria’s employer pays a matching $5,737.50, making the full payroll tax burden on her employment $11,475. Maria’s effective FICA rate on her wages is 7.65%. Because she is well below the Additional Medicare Tax threshold, her FICA is simply a flat percentage of wages.

Example 2: Freelancer with moderate self-employment income

David earns $60,000 net from freelance work and files single.

Net Earnings = $60,000 × 92.35% = $55,410
SE SS Tax    = $55,410 × 12.4% = $6,870.84
SE Medicare  = $55,410 × 2.9%  = $1,606.89
Add'l Med    = $0
Total SE Tax = $8,477.73
SE Deduction = $4,238.87

David deducts $4,238.87 from gross income on Schedule 1, which reduces his AGI — and therefore his federal income tax base — before he even applies standard deductions or other adjustments. Tracking how this deduction interacts with other income adjustments is easier when you start from the AGI Calculator.

Example 3: High-earning employee who exceeds the wage base

Sarah earns $200,000 per year as a W-2 employee, filing single.

SS Tax    = $184,500 × 6.2%           = $11,439.00
Medicare  = $200,000 × 1.45%          = $2,900.00
Add'l Med = $0 (exactly at threshold)
Total     = $14,339.00

Sarah’s employer pays a matching $22,878 in SS plus $2,900 in Medicare for a total employer FICA cost of $25,778 — on top of her $200,000 salary. The Social Security tax stops at the wage base, but Medicare continues on the full amount. At this income level, her effective employee FICA rate drops below 7.65% because the Social Security cap limits additional contributions on income above $184,500.

Example 4: Self-employed consultant crossing the Additional Medicare threshold

Kevin runs a consulting practice and reports $280,000 net SE income, filing single.

Net Earnings = $280,000 × 92.35% = $258,580
SE SS Tax    = $184,500 × 12.4%  = $22,878.00
SE Medicare  = $258,580 × 2.9%   = $7,498.82
Add'l Med    = ($258,580 − $200,000) × 0.9% = $527.22
Total SE Tax = $30,904.04
SE Deduction = ($22,878.00 + $7,498.82) ÷ 2 = $15,188.41

Kevin’s SE tax deduction of $15,188.41 is one of the most valuable items on his return. Combined with self-employed health insurance deductions and retirement contributions, these above-the-line deductions can substantially lower his taxable income. If Kevin also invoices clients at a day rate, the Bill Rate Calculator helps him model what hourly or daily rate fully covers both SE tax and business expenses.

Example 5: Married couple filing jointly near the threshold

Lisa and Tom each earn $140,000 per year as W-2 employees and file jointly. Their combined income is $280,000.

Lisa's FICA:
  SS     = $140,000 × 6.2%  = $8,680.00
  Med    = $140,000 × 1.45% = $2,030.00
  Add'l  = $0 (employer withholds at $200k; Lisa is below that from her employer)
  Total  = $10,710.00

Tom's FICA:
  Same   = $10,710.00

Combined employee FICA = $21,420.00

Because each employer independently withholds Additional Medicare Tax only when that one employer’s wages exceed $200,000, neither Lisa nor Tom will have the 0.9% withheld during the year. However, their combined income of $280,000 is above the $250,000 MFJ threshold, so they will owe $270 in Additional Medicare Tax (0.9% × $30,000 excess) when they file Form 8959. They may want to make an estimated payment to avoid underpayment penalties. Understanding this gap between payroll withholding and the final return obligation is one of the key reasons the Bonus Paycheck Calculator includes the filing-status threshold when modeling bonus withholding.

Common FICA Planning Situations

Quarterly Estimated Taxes for the Self-Employed. The IRS expects self-employed individuals to pay estimated taxes on FICA and income tax four times per year. Because SE tax can easily run $10,000–$30,000 or more on a moderate income, failing to set aside money throughout the year can create a painful lump-sum obligation in April. Calculate your expected SE tax early in the year and divide by four to build a quarterly payment schedule.

Multiple Jobs and the Wage Base. If you work two jobs simultaneously, each employer independently withholds Social Security up to the wage base without knowing what the other employer is withholding. If your combined wages exceed $184,500 across both employers, you will have overpaid Social Security taxes. The excess is refundable — claim it as a credit on your Form 1040. This situation is more common than many workers realize, especially in salaried-plus-freelance arrangements.

Benefits Cliffs Near the Additional Medicare Threshold. For single filers earning just over $200,000, the Additional Medicare Tax begins immediately. There is no phase-in, and the threshold is not adjusted for inflation. Workers negotiating compensation near that figure should understand exactly what the new 0.9% means on their incremental income, combined with any phase-outs of income-based deductions that also begin at that range.

S-Corporation Salary Planning. Self-employed owners who elect S-corporation status can split their income between a reasonable salary (subject to FICA) and pass-through distributions (not subject to SE tax). The IRS requires that the salary be reasonable for the work performed, but optimizing the split is a legitimate tax strategy. FICA calculations on the salary portion are the same as for any W-2 employee.

Retirement Plan Contributions and FICA. Contributions to 401(k), SEP-IRA, and SIMPLE IRA plans reduce federal income tax but do not reduce FICA taxes for employees. Pre-tax retirement deferrals lower the wages subject to income tax withholding, but Social Security and Medicare are still calculated on the full gross wage. Self-employed individuals compute SE tax on net earnings before retirement plan deductions, which is another reason FICA can feel disproportionately large relative to the income tax bill in early self-employment years.

Tips for Accurate FICA Calculations

Use gross wages, not net pay. FICA is computed on pre-tax gross wages. Using take-home pay or post-deduction income will understate your Social Security and Medicare contributions.

Check your W-2 for accuracy. Box 3 and Box 5 of your W-2 show Social Security wages and Medicare wages, respectively. These should match your gross wages unless you have pre-tax benefits like employer-sponsored retirement contributions or health insurance premiums paid on a pre-tax basis. Discrepancies can sometimes indicate a payroll error that is worth following up with your employer.

Self-employed? Track expenses carefully. Because SE tax applies to net self-employment income, every legitimate business deduction reduces the base on which both SE tax and income tax are calculated. Well-documented deductions have a multiplier effect on the total tax bill.

Plan for the Additional Medicare Tax if you are near the threshold. The 0.9% rate is modest, but the surprise of owing a tax that your employer did not withhold can be jarring. If you expect your combined household income to exceed the threshold for your filing status, consider making extra estimated payments in the fourth quarter.

Verify the wage base each year. The Social Security wage base changes annually. The figures in this calculator reflect 2026 guidelines. If you are planning for future years, check the SSA wage base table for the most current figure before making multi-year projections.