How to Read Your Pay Stub: Understanding Every Line

Payroll errors are more common than people assume. Incorrect withholding, missing overtime, benefit deductions that do not match what you enrolled in, misclassified employment status — all of it happens routinely, and almost none of it gets caught. A small recurring error costs hundreds or thousands of dollars over a year, quietly, in a document you receive twenty-six times and read once.

The reason it goes uncaught is straightforward. A 2023 National Payroll Institute survey found that over half of working Americans could not confidently explain the difference between gross and net pay, and fewer than 30 percent could name every deduction on their own stub. You cannot audit a document you cannot read.

Roughly 30 percent of gross pay disappears into taxes and deductions for a typical W-2 employee. This is a guide to where it goes and how to check that the number is right.

The earnings section

Formats vary by employer, but every stub has the same three parts: what you earned, what was taken, and what is left.

Gross pay. Everything before deductions. Salaried: annual salary divided by pay periods, usually 24 or 26. Hourly: hours times rate. This is the number your employer agreed to; everything below it is subtraction.

Regular hours or salary. Standard pay for the period — hours up to 40 a week and the rate, or the per-period salary amount.

Overtime. Anything past 40 hours in a week, at 1.5× your regular rate, required by federal law for non-exempt employees. This is the single most valuable line to check, because it is the one most often missing or computed wrong. Divide the OT dollars by the OT hours; if the result is not 1.5× your rate, flag it that day.

The taxes

Federal income tax. Withheld based on the W-4 you filled out at hiring. Critically, this is an estimate, not your actual tax bill. Withhold too much and you get a refund; too little and you owe in April. The amount tracks your income, filing status, and what you claimed.

State income tax. Varies enormously. Texas, Florida, and Nevada take nothing and the line will not appear at all. California and New York take somewhere between 5 and 13 percent.

Social Security (FICA-OASDI). 6.2 percent of gross, up to an annual wage cap that the SSA adjusts every year — worth looking up the current figure rather than assuming, since it moves. Your employer matches it, so 12.4 percent total goes in. This funds your own future retirement and disability benefits.

Medicare (FICA-HI). 1.45 percent of gross with no cap, matched by your employer. Single filers over $200,000 pay an extra 0.9 percent surtax on the excess.

The deductions you chose

Health insurance. Your share of the premium — most employers cover 70 to 85 percent. Usually pre-tax, which lowers your taxable income. On a high-deductible plan, the HSA contribution may sit on its own line.

401(k) or retirement. Traditional contributions are pre-tax: they cut your taxable income now, and you pay on withdrawal. Roth contributions are after-tax: no break now, tax-free later. One thing that confuses people constantly — the employer match does not appear on your stub. It goes straight into the account. Not seeing it does not mean you are not getting it, but not contributing enough to earn it means you are declining money.

Everything else. Dental, vision, life and disability insurance, FSA or HSA, union dues, transit or parking, wage garnishments. Each should be labeled separately. If something is lumped or unlabeled, ask.

On garnishments specifically: these are court-ordered — child support, unpaid taxes, defaulted student loans, judgments — and your employer is legally obligated to withhold and forward them. Federal law caps them at 25 percent of disposable income, or 50 to 65 percent for child support. If one appears that you do not recognize, that is a call to a lawyer, not to HR.

Net pay and the column nobody reads

Net pay is gross minus everything — the deposit that hits your account, typically 65 to 75 percent of gross. If your gap looks wider than that, the answer is in the lines above, and it is usually a benefit election you forgot about.

The year-to-date column is the underused one. It should match your W-2 at tax time — if it does not, there is a payroll error somewhere in the year. It also tells you when you are approaching thresholds like the Social Security cap or your FSA limit, which is information you can only act on before December.

Worth noting for budgeting: net pay is the number your life actually runs on. Building an emergency fund or a monthly plan off gross pay is how people end up short every month without understanding why.

The five-minute audit

If you find something: contact payroll or HR with the stub and a specific description of the discrepancy. Most errors get fixed on the next cycle. Keep copies of every stub for at least a year — you will want them for tax disputes, loan applications, and employment verification. If it persists across multiple requests, your state Department of Labor takes complaints.

The W-4 is a lever, not a form

Here is the reframe most people never get. A big refund is not a win. It means you overwithheld and lent the government money at zero percent for up to sixteen months. A $1,000 refund is roughly $40 to $85 per paycheck you could have had all year — money that could have been sitting in a high-yield savings account earning something.

The target is boring: owe nothing, receive nothing. Run the IRS Withholding Estimator and adjust the W-4 toward that. And update it after anything structural — marriage, a kid, a second job, or a raise you negotiated — because a stale W-4 is the most common cause of an April surprise in either direction.

None of this takes long. Five minutes a cycle, and the stub stops being a receipt you throw away and starts being what it actually is: the most detailed financial document you receive all year, about the largest transaction in your life.

This article is educational and not financial, tax, or legal advice. Pay stub formats and deduction types vary by employer and jurisdiction.