If you've ever stared at your offer letter, divided the salary by 26, and then watched a much smaller number land in your bank account, you're not alone. The gap between gross pay and take-home pay is often 25-35% — bigger than most people expect. This guide walks through the exact formula, step by step, so you can estimate your net paycheck from any salary in any state.
The Quick Formula
At its core, the calculation is straightforward subtraction. From your gross pay per period, you subtract four categories of deductions, in this order:
| Step | What's Subtracted |
|---|---|
| 1. Gross pay | Annual salary ÷ pay periods per year |
| 2. Pre-tax deductions | 401(k), HSA, health insurance premiums |
| 3. FICA taxes | Social Security (6.2%) + Medicare (1.45%) |
| 4. Federal income tax | Based on tax brackets and filing status |
| 5. State (and local) income tax | Varies by state and city |
| = Net pay | What lands in your bank account |
Order matters: pre-tax deductions reduce the income that federal and state taxes are calculated on, so they save you more than just the deduction amount.
Step-by-Step Calculation
Find your gross pay per period
Divide your annual salary by the number of pay periods. Weekly = 52, biweekly = 26, semimonthly = 24, monthly = 12. A $75,000 salary paid biweekly works out to $2,884.62 per period.
Subtract pre-tax deductions
If you contribute 5% of your salary to a 401(k) and pay $80 per period for health insurance, that's $144.23 + $80 = $224.23 off the top. Your taxable wages drop to $2,660.39.
Calculate FICA taxes
Multiply your taxable wages by 7.65% (6.2% Social Security + 1.45% Medicare). On $2,660.39 that's about $203.52. FICA is flat — same rate regardless of filing status.
Calculate federal income tax
Use the IRS tax brackets for your filing status. For a single filer earning $75,000, the effective federal rate after the standard deduction is roughly 11-12%, or about $290-$320 per biweekly check.
Calculate state income tax
Apply your state's rate to the same taxable wages. Rates range from 0% (Texas, Florida) to over 13% (California's top bracket). For a 5% state, that's about $133 per period.
Subtract everything from gross pay
Gross pay minus pre-tax deductions, FICA, federal tax, and state tax equals your net pay — the amount deposited into your account.
Worked Example: $75,000 Salary, Single Filer, Biweekly
Here's a complete breakdown for someone earning $75,000 per year, paid biweekly, single, contributing 5% to a 401(k), paying $80 per period for health insurance, and living in a state with a 5% flat income tax:
| Line Item | Per Paycheck | Annual |
|---|---|---|
| Gross Pay | $2,884.62 | $75,000.00 |
| 401(k) (5%) | -$144.23 | -$3,750.00 |
| Health Insurance | -$80.00 | -$2,080.00 |
| Social Security (6.2%) | -$164.94 | -$4,288.40 |
| Medicare (1.45%) | -$38.58 | -$1,003.20 |
| Federal Income Tax | -$305.00 | -$7,930.00 |
| State Income Tax (5%) | -$133.02 | -$3,458.50 |
| Net Take-Home Pay | $2,018.85 | $52,489.90 |
That's roughly 70% of gross becoming take-home. The other 30% is split between taxes, retirement savings, and benefits — and a big chunk of it (the 401(k) and HSA contributions) is still your money, just earmarked for later.
How Filing Status Changes the Math
Filing status affects federal income tax brackets and the standard deduction. State and FICA calculations don't change. Here's how the same $75,000 salary plays out for two common filing statuses:
A single filer earning $75,000 hits the 22% federal bracket on income above $47,150 (after the $14,600 standard deduction). Effective federal rate: about 11.4%. Estimated annual federal tax: ~$7,930.
Marriage doesn't always reduce taxes. When both spouses earn similar high incomes, the brackets can push joint filers into a "marriage penalty." The savings shown above assume a single-earner household.
State Tax Is the Biggest Variable
Federal tax and FICA are the same everywhere in the US, but state income tax can swing your take-home pay by thousands of dollars per year. Nine states have no income tax at all — your $75,000 salary nets noticeably more in Texas than in California.
To see exact numbers for your state, use one of our state-specific calculators:
Highest state tax in the US (up to 13.3%) plus SDI withholding.
TexasNo state income tax — only federal and FICA come out of your check.
New YorkProgressive state tax up to 10.9%, plus NYC city tax for residents.
FloridaNo state income tax. Only federal and FICA reduce your paycheck.
IllinoisFlat 4.95% state tax with no progressive brackets.
WashingtonNo state income tax, but a 0.58% WA Cares payroll tax applies.
Common Mistakes to Avoid
Forgetting that pre-tax deductions lower your taxable income. A $200 pre-tax 401(k) contribution doesn't just save $200 — it also reduces the income subject to federal and state tax, often saving an extra $40-$60 in tax.
Ignoring the Social Security wage base. Social Security only applies to the first $176,100 of wages (in 2026). High earners stop paying it partway through the year, which makes their later paychecks larger.
Missing the additional Medicare tax. Wages above $200,000 (single) or $250,000 (married jointly) get an extra 0.9% Medicare tax on top of the standard 1.45%.
For a deeper look at how pre-tax deductions affect your check, see our guide on pre-tax vs. post-tax deductions. And if your first paycheck still comes in lower than this calculation suggests, we cover why — the most common cause is partial-period pay or end-of-year benefit catch-ups.
Frequently Asked Questions
Skip the Math
The fastest way to get an exact number for your situation is to use a state-specific paycheck calculator that already has the federal and state tax tables built in.