FICA Tax Calculator

Category: Other Finance
- May 06, 2025
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Calculate your Federal Insurance Contributions Act (FICA) tax deductions, including Social Security and Medicare taxes based on your income.

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About FICA Taxes

FICA (Federal Insurance Contributions Act) taxes fund Social Security and Medicare programs. These are payroll taxes that both employees and employers pay.

FICA Tax Components
  • Social Security Tax: 6.2% on earnings up to the annual wage base limit ($168,600 for 2025).
  • Medicare Tax: 1.45% on all earnings (no wage base limit).
  • Additional Medicare Tax: 0.9% on earnings above $200,000 for singles or $250,000 for married couples filing jointly.
Self-Employment Tax

Self-employed individuals pay both the employee and employer portions of FICA taxes:

  • Social Security: 12.4% (6.2% × 2) up to the wage base limit
  • Medicare: 2.9% (1.45% × 2) on all earnings
  • Additional Medicare Tax: 0.9% on earnings above threshold
  • Self-employed individuals can deduct 50% of their self-employment tax from their income taxes
FICA Tax Formula

For employees:

FICA Tax = (Eligible Income × Social Security Rate) + (Total Income × Medicare Rate)

For self-employed individuals:

Self-Employment Tax = (Eligible Income × 12.4%) + (Total Income × 2.9%)

What Is the FICA Tax Calculator?

The FICA Tax Calculator is a simple online tool that helps you estimate how much of your income will go toward Social Security and Medicare taxes. These are federal payroll taxes required under the Federal Insurance Contributions Act (FICA). Whether you’re an employee, self-employed, or working multiple jobs, this calculator provides a clear breakdown of your deductions.

It also gives you the option to explore how your tax payments change based on your filing status, income level, and pay frequency. This tool is especially useful when you're budgeting or comparing job offers, as it shows your take-home pay more accurately than gross salary figures.

FICA Tax Formula

For Employees:
FICA Tax = (Social Security Rate × Income up to wage base limit) + (Medicare Rate × Total Income)
For Self-Employed:
FICA Tax = (12.4% × Income up to wage base limit) + (2.9% × Total Income) + (0.9% × Income over threshold, if applicable)

Why Use This Calculator?

Knowing your estimated FICA tax obligations can help with:

  • Budget Planning: Understand your real take-home pay by factoring in payroll taxes.
  • Self-Employment Prep: Calculate self-employment tax and eligible deductions.
  • Tax Year Comparison: Compare how your tax rates change across years from 2022 to 2025.
  • Income Variations: See how bonuses or extra income affect your taxes.
  • Pay Period Adjustments: View how taxes are spread across weekly, bi-weekly, or monthly pay periods.

This tool is a helpful companion to Other calculators like a debt repayment tool or loan estimate tool when you're building a broader Financial plan.

How to Use the Calculator

  1. Enter your annual income.
  2. Select your filing status (Single, Married Filing Jointly, or Self-Employed).
  3. Choose your pay period to see how taxes break down per paycheck.
  4. Pick the tax year you want to calculate for.
  5. Optional: Check “Include additional earnings” to input bonuses or other compensation.
  6. Click Calculate to view results instantly.

Understanding the Results

After clicking calculate, you’ll see:

  • Total Income: Combines all inputs including bonuses.
  • Social Security Tax: 6.2% (or 12.4% if self-employed) up to the wage base limit.
  • Medicare Tax: 1.45% (or 2.9% if self-employed) on all income.
  • Additional Medicare Tax: 0.9% on income exceeding $200,000 (single) or $250,000 (married).
  • Take-Home Pay: Your income after FICA deductions.
  • Breakdown by Pay Period: See tax and take-home figures for each period.
  • Self-Employment Deduction: If applicable, 50% of your SE tax is deductible from income tax.

Frequently Asked Questions

Q: What is the Social Security wage base?
A: It's the maximum amount of earnings subject to Social Security tax. For example, in 2025 it's $168,600.

Q: Who pays FICA taxes?
A: Both employers and employees contribute. If you're self-employed, you pay both shares.

Q: Can this calculator help with other financial planning?
A: Yes. Combine it with tools like a loan payment estimator, debt payoff plan, or APY interest breakdown tool to get a complete financial picture.

Q: Does this calculator account for federal income tax?
A: No. It focuses only on payroll taxes under FICA. For full tax estimates, consider using a full Paycheck Calculator or tax estimator.

Why This Calculator Is Useful

Whether you're exploring new job offers, calculating take-home pay as a freelancer, or simply planning your budget, this tool makes it easier to:

  • Break down federal payroll tax costs quickly
  • Estimate your taxes based on real-time inputs
  • Plan how much you can save or spend per paycheck
  • Use side-by-side with a simple savings estimate or monthly loan cost tool

It’s a quick and helpful way to understand how much of your paycheck goes toward Social Security and Medicare—no guesswork needed.