How to Calculate Paycheck Taxes 2026 — Step by Step Guide
February 24, 2026 · 8 min read
Understanding your paycheck taxes helps you budget better, spot errors, and find ways to legally reduce what you owe. Here's the exact process used to calculate every deduction on your pay stub — with a real $75,000 salary example throughout.
Start With Gross Pay
Gross pay is your total earnings before any deductions. For salaried workers: Annual salary ÷ pay periods. For hourly: Hours worked × hourly rate.
Subtract Pre-Tax Deductions
Pre-tax deductions reduce your taxable income. Common ones: 401(k) contributions, HSA contributions, health insurance premiums (if employer-sponsored), dental/vision premiums, FSA contributions.
Calculate Federal Income Tax
Federal income tax uses progressive brackets — you only pay the higher rate on income above each threshold. For 2026 single filers, the standard deduction is $15,000.
Calculate FICA Taxes
FICA is calculated on gross wages (before 401k, but usually after health insurance). Social Security: 6.2% up to $184,500. Medicare: 1.45% on all wages.
Calculate State Income Tax
State tax varies by state — from 0% (Texas, Florida) to 13.3% (California top rate). Most states use taxable income after the federal standard deduction.
Add Post-Tax Deductions
Some deductions come out after tax: Roth 401(k), life insurance (some amounts), wage garnishments, union dues.
2026 Federal Tax Brackets (Single Filer)
Complete $75,000 Example Summary
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