1. The Main Sections of a Pay Stub
Every pay stub — whether paper or digital through an HR portal — covers the same core information, even if the layout and labels differ between employers. Before reading individual lines, understand the overall structure:
- Employee and employer information — your name, address, employee ID, employer name and EIN (Employer Identification Number)
- Pay period and pay date — the dates this stub covers and when money was deposited
- Earnings section — all sources of gross income this period
- Deductions section — taxes withheld and benefit contributions deducted
- Year-to-date (YTD) totals — cumulative amounts since January 1st
- Net pay — the final amount deposited to your account
Here is an annotated example pay stub to reference throughout this guide:
2. Earnings Section — Gross Pay Explained
The earnings section lists every source of income for the pay period before any deductions. Common line items:
Your base pay for normal hours worked. For hourly employees: hours worked multiplied by your hourly rate. For salaried employees: your annual salary divided by the number of pay periods per year (26 for bi-weekly, 24 for semi-monthly, 12 for monthly). For a $60,000 salary paid bi-weekly: $60,000 / 26 = $2,307.69 per pay stub.
Hours worked beyond 40 in a workweek, paid at 1.5x your regular rate under FLSA (Fair Labor Standards Act). Some states (California, for example) also require daily overtime for hours beyond 8 in a single day. Always verify: overtime rate = regular hourly rate × 1.5. Use our overtime calculator to verify any overtime amount on your stub.
Supplemental wages — taxed differently from regular pay. The IRS allows employers to use the flat rate method (22% federal withholding on supplemental wages up to $1 million) or the aggregate method (withheld at your marginal rate). A bonus appearing unexpectedly smaller than expected after tax is often simply correct — 22% federal plus state tax plus FICA can take 35-40% of a bonus depending on your location.
The sum of all earnings lines before any deductions. This is the number that appears on loan applications and income verifications. It is your total compensation before taxes — not what you take home. Always negotiate salaries and communicate compensation in gross terms.
3. Tax Withholding — Federal, State and Local
Tax withholding is money your employer takes from each paycheck and sends to tax authorities on your behalf. It is an advance payment toward your annual tax liability — not a separate tax. At year-end your W-2 shows total withholding; if it exceeds your actual tax liability you receive a refund, if it falls short you owe the difference.
Calculated based on your taxable wages (gross minus pre-tax deductions), your filing status (Single, Married Filing Jointly, etc.) and your W-4 elections. The amount withheld per period approximates your annual federal tax liability divided by the number of pay periods. If you received a large refund last year, your withholding is too high — update your W-4 to get more money each paycheck instead of waiting for April. If you owed a large amount, increase withholding.
Varies dramatically by state. Nine states have no state income tax (Texas, Florida, Nevada, Washington, Wyoming, Alaska, South Dakota, Tennessee, New Hampshire). Other states range from a flat 3% (North Dakota) to over 13% at California's top rate. The withholding method mirrors federal — it approximates your annual state liability across pay periods.
Some cities and localities impose their own income taxes — New York City, Philadelphia, Detroit, and several others. These appear as separate lines and range from under 1% to over 3%. If you live in a different city from where you work, you may see withholding for both jurisdictions — with a credit in your resident city for taxes paid to your work city.
4. FICA — Social Security and Medicare
FICA (Federal Insurance Contributions Act) taxes fund Social Security and Medicare. Unlike income tax, FICA rates are fixed regardless of your W-4 elections — you cannot change how much is withheld.
| FICA Tax | Your Rate | Employer Also Pays | Wage Base (2025) | Calculation |
|---|---|---|---|---|
| Social Security | 6.2% | 6.2% | $168,600 | Stops once YTD wages hit $168,600 |
| Medicare | 1.45% | 1.45% | No limit | Applied to every dollar earned |
| Additional Medicare | 0.9% | None | Over $200K single | Only on wages above $200,000 |
| Total FICA | 7.65% | 7.65% | — | Combined employee rate |
To verify Social Security on your stub: multiply gross pay by 0.062. If your YTD wages have not yet exceeded $168,600, this should match the stub exactly. Once YTD wages hit $168,600, Social Security tax stops for the remainder of the year — you will see it disappear from subsequent stubs. Medicare continues at 1.45% with no cap. Use our net pay calculator to verify your full deduction breakdown against what appears on your stub.
5. Pre-Tax and Post-Tax Deductions
This distinction matters significantly because pre-tax deductions reduce your taxable income before federal and state taxes are calculated — making them worth more than their face value.
Reduces your federal and most state taxable income dollar-for-dollar. A $200 traditional 401k contribution reduces your federal taxable wages by $200, saving approximately $44-$54 in federal tax for someone in the 22-27% marginal bracket. The net cost to your take-home pay is only $146-$156, not $200. FICA is still calculated on gross wages — 401k contributions do not reduce FICA.
Contributed from after-tax wages — reduces your take-home dollar-for-dollar with no tax benefit today. The benefit comes later: Roth withdrawals in retirement are completely tax-free, including all the growth. If you expect to be in a higher tax bracket in retirement than today, Roth contributions are mathematically superior. Both appear on your pay stub as separate lines.
Employer-sponsored health insurance premiums paid through payroll are typically pre-tax under a Section 125 Cafeteria Plan. This means your medical premium reduces both your income tax and your FICA — unlike 401k contributions. A $100/month medical premium costs approximately $75 in take-home pay for a middle-income earner when accounting for tax savings.
Health Savings Account contributions through payroll are pre-tax for income tax AND FICA — making them the most tax-efficient savings vehicle available. Unlike FSA, unused HSA funds roll over indefinitely. HSA contributions invested grow tax-free; withdrawals for qualified medical expenses are also tax-free. Triple tax advantage in a single account.
6. Year-to-Date (YTD) Columns
Most pay stubs show both current-period amounts and YTD totals. YTD columns show cumulative figures from January 1st through the current pay date. They are useful for tracking your annual earnings, verifying you are on track with 401k contribution limits, and confirming Social Security tax stops at the correct point in the year. Your W-2 at year end will match your final December pay stub's YTD totals — reconciling these is how you catch errors before filing taxes.
7. Net Pay — Your Actual Take-Home Amount
Net pay = Gross pay minus all taxes withheld minus all deductions. It is the amount deposited to your bank account or written on your paper check. The formula:
Net Pay = Gross Pay − Pre-Tax Deductions − All Taxes − Post-Tax Deductions
Using the example stub above: $2,481.08 − $238.36 (pre-tax) − $557.81 (taxes) − $24.81 (post-tax) = $1,660.10. The example shows $1,850.20 — the difference reflects exact tax calculations versus rounded estimates used here. Our paycheck calculator computes your exact net pay per period, and our salary calculator converts your annual salary to per-paycheck net amounts across any pay frequency.
8. How to Spot Errors on Your Pay Stub
Payroll errors are more common than most employees realise — studies suggest 33% of employers make payroll errors in a given year. Most underpayments go unchallenged simply because employees do not check their stubs. Here is what to verify every pay period:
- Gross pay matches expected: hours × rate for hourly; salary / pay periods for salaried. Any discrepancy needs explanation.
- Social Security is 6.2% of gross: multiply your gross pay by 0.062 and compare to the stub. After YTD wages exceed $168,600 it should stop entirely.
- Medicare is 1.45% of gross: multiply gross by 0.0145 and compare.
- Pre-tax deduction amounts match your elections: if you elected 6% 401k contribution, verify the dollar amount is 6% of gross pay.
- YTD totals are consistent: current period amount × number of pay periods to date should approximately equal the YTD total.
- Overtime calculation is correct: OT hours × (regular rate × 1.5). Short OT pay is one of the most common payroll errors.
Report payroll discrepancies to your HR or payroll department in writing (email creates a record). Employers are legally required to correct underpayments. Keep copies of your pay stubs — ideally every one you receive. Payroll records can be critical for loan applications, tax disputes and legal employment matters years after the fact.
9. W-4 and Adjusting Your Withholding
Your W-4 form on file with your employer controls how much federal income tax is withheld from each paycheck. The post-2020 W-4 redesign removed the old allowances system in favour of direct dollar entries. Key situations that warrant updating your W-4:
- You got married or divorced
- You had a child or dependent
- You started a second job or your spouse started working
- You received a large tax refund last year (over-withheld — update to get more each paycheck)
- You owed a significant amount last April (under-withheld — increase withholding)
- You have significant investment income or deductions outside your salary
The IRS Tax Withholding Estimator at IRS.gov walks through your full tax picture and tells you exactly what to enter on your W-4. You can submit an updated W-4 to your employer at any time — it takes effect within one or two pay periods.
10. Verify Your Numbers with Our Calculators
Understanding your pay stub means you can verify every number before accepting it. Our suite of payroll calculators lets you cross-check your employer's calculations independently. Use our net pay calculator to estimate your full breakdown — gross to net — for any salary and state. Use our hourly to annual calculator to verify that your hourly rate translates correctly to your expected annual salary. Use our tax calculator to estimate your full annual federal and state tax liability, then compare it to your YTD withholding to project whether you will receive a refund or owe in April.
Verify Your Pay Stub Numbers
Calculate your expected gross-to-net breakdown and compare it to your actual pay stub to make sure every line is correct.
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