Every line on your pay stub explained — gross pay, federal tax, FICA, state tax, pre-tax deductions, and net pay. Know exactly where your money goes, and how to catch errors before they cost you.
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⚡ Quick Summary
- Gross pay = what you earned. Net pay = what you keep
- Federal income tax, Social Security (6.2%), and Medicare (1.45%) hit every paycheck
- Pre-tax 401(k) and health insurance deductions reduce your taxable income — costing less than they look
- Check your YTD Social Security column — withholding stops at $176,100
Most people glance at the deposit amount and ignore the rest. That's a mistake. Your pay stub is a live financial dashboard — it shows you exactly what you're paying in taxes, what you could be paying less, and whether your employer is making errors.
Gross Pay vs. Net Pay
Gross pay is what you earned before anything is deducted. If you earn $25/hour and worked 80 hours this pay period, your gross pay is $2,000.
Net pay — also called take-home pay — is what actually lands in your bank account after all deductions. It's typically 20–35% less than gross pay.
📊 Key Number
On a $75,000 salary, the typical take-home is $54,000–$58,000/year depending on your state. That's $4,500–$4,800/month — not $6,250.
Federal Income Tax Withholding
This is usually the biggest deduction. How much is withheld depends on three things: your salary, your filing status (Single vs. Married), and what you put on your W-4 form when you were hired.
Federal income tax is progressive — higher income means higher rates on the amounts above each bracket. But you never pay the top rate on your full salary. Only the portion above each threshold gets taxed at that rate.
💡 Action Tip
If you get a large refund every year (over $1,000), your withholding is too high. Update your W-4 with your employer — increase the number of allowances or claim additional deductions. You'll get that money in your paycheck all year instead of waiting for a refund.
FICA: Social Security & Medicare
FICA stands for the Federal Insurance Contributions Act. Two taxes roll up into this line:
| Tax | Rate | Wage Cap (2025) | On a $75k Salary |
|---|---|---|---|
| Social Security | 6.2% | $176,100 | $4,650/year |
| Medicare | 1.45% | No cap | $1,088/year |
| Total FICA | 7.65% | — | $5,738/year |
Your employer secretly matches every dollar of FICA you pay. They send 15.3% of your wages to the government — half from you, half from them. You only see your 7.65% on your stub.
State Income Tax
Depends entirely on where you work. Nine states charge zero:
No state income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming.
If you live in one of these states, this line will say $0. Workers in California or New York can see 5–10% of their paycheck disappear here on top of federal taxes.
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Pre-Tax Deductions — The Hidden Benefit
These come out before taxes are calculated, which means they reduce your taxable income. A $500/month 401(k) contribution doesn't cost you $500 in take-home pay — it costs you less, because you're also paying less tax.
| Deduction Type | Tax Treatment | What It Covers |
|---|---|---|
| Traditional 401(k) / 403(b) | Pre-tax federal & state | Retirement savings (up to $23,000/year in 2025) |
| Health insurance premiums | Pre-tax | Your share of employer health coverage |
| HSA contributions | Pre-tax | Health Savings Account (requires high-deductible plan) |
| FSA / Dependent Care FSA | Pre-tax | Medical or childcare expenses |
| Roth 401(k) | Post-tax (taxed now) | Tax-free in retirement |
💡 Action Tip — 401(k) Math
Contributing $200/paycheck (biweekly) to a 401(k) on a $75k salary costs you only about $154 in actual take-home — because you're also paying ~$46 less in taxes. And if your employer matches, it costs you even less relative to what you're building. Contribute at least enough to get the full match.
Year-to-Date (YTD) Totals
The YTD column shows cumulative totals from January 1 to this paycheck. Use it to:
Track Social Security withholding. Once your YTD wages hit $176,100, Social Security withholding stops for the rest of the year. High earners should watch this — your take-home jumps in the back half of the year.
Estimate your tax situation. If your YTD federal withholding seems way off from what you'd expect to owe, adjust your W-4 now rather than scrambling in April.
Verify 401(k) contributions. Confirm your YTD contributions are on pace for your annual target and haven't been miscalculated.
What to Check Every Pay Period
1. Hours and rate. Hourly workers: verify every hour is accounted for, including overtime (1.5× after 40 hours/week under federal law). Errors in hours are the most common paycheck mistake.
2. Benefit deductions. Make sure health insurance, 401(k), and FSA deductions match what you enrolled for. A missing 401(k) deduction means you're losing retirement money silently.
3. Social Security cap. If you're a high earner and your YTD wages just crossed $176,100 — Social Security withholding should stop on the next check. If it doesn't, flag HR immediately.
4. Your effective rate. Divide total taxes by gross pay. If that number is way off from what you expect, something changed — new bracket, bonus withholding, or W-4 error.
Want to check what your paycheck should look like? Use our free paycheck calculator to run the numbers yourself — just enter your salary and state.
📋 Disclaimer
The rates and numbers in this guide reflect 2025 federal tax law. State tax rates and rules vary. We are not accountants or tax advisors. If you find a discrepancy in your paycheck, contact your HR or payroll department first — and consult a CPA for complex situations.
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