How to Read Your Pay Stub: A Complete Guide
Your pay stub is one of the most important financial documents you receive on a regular basis — yet most people glance at the net pay figure and ignore everything else. This guide will teach you how to read every line of your pay stub so you can catch errors, understand your tax situation, and make smarter financial decisions.
Why You Should Read Your Pay Stub Carefully
Payroll errors are more common than most people realize. According to the American Payroll Association, payroll errors affect roughly 1 in 3 workers at some point in their careers. These errors can include incorrect pay rates, miscalculated overtime, wrong withholding amounts, or benefits not being deducted properly.
Beyond catching errors, understanding your pay stub helps you plan your budget accurately, maximize your tax-advantaged benefits, verify your W-2 at tax time, and make informed decisions when comparing job offers or negotiating raises.
Start with Gross Pay
The first number to find is your gross pay — your total earnings before any deductions. For salaried employees, this should be your annual salary divided by your number of pay periods. If you earn $75,000 per year and are paid biweekly (26 times per year), your gross pay per stub should be exactly $2,884.62.
If your gross pay looks wrong, check whether your employer has correctly applied any raise that was supposed to take effect, whether overtime was calculated correctly (1.5x for hours over 40 per week under federal law), and whether any bonuses or commissions were included in the right period.
Understanding the Tax Withholding Lines
Federal Income Tax
This is the amount withheld for federal income tax based on your W-4 and the IRS withholding tables. The amount varies depending on your gross pay, filing status, and any additional withholding you requested. If you think too much or too little is being withheld, use the IRS Tax Withholding Estimator and then update your W-4 with your employer's HR department.
State Income Tax
State tax withholding appears as a separate line. The rate varies significantly: California's top rate is 13.3%, while Florida, Texas, and seven other states charge no state income tax at all. If you moved states during the year, verify that your employer updated your state withholding promptly to avoid underpayment.
Social Security (OASDI)
Social Security tax is 6.2% of your gross wages up to the annual wage base ($176,100 in 2026). Once your YTD earnings exceed this threshold, Social Security withholding stops for the rest of the calendar year, and you'll see a slight increase in your net pay.
Medicare
Medicare tax is 1.45% of all wages with no wage base cap. High earners — those with wages above $200,000 individually — also pay an Additional Medicare Tax of 0.9%, bringing their total Medicare rate to 2.35% on income above that threshold.
Pre-Tax vs. Post-Tax Deductions
This distinction has a direct impact on how much federal and state tax you pay, and it's frequently misunderstood.
Pre-Tax Deductions
Reduce your taxable income before taxes are calculated. Examples:
- Traditional 401(k) contributions
- Health insurance premiums (employer plan)
- HSA contributions
- FSA contributions
- Dental and vision insurance
- Commuter benefits
Post-Tax Deductions
Taken out after taxes are calculated. Examples:
- Roth 401(k) contributions
- Life insurance (above $50,000 coverage)
- Wage garnishments
- After-tax disability insurance
- Union dues (in some cases)
- Charitable payroll deductions
If you contribute 6% of your $75,000 salary to a traditional 401(k), that's $4,500 per year — or $173.08 per biweekly paycheck — that reduces your federal taxable income. At a 22% federal marginal rate, you save about $990 in federal taxes annually just from this one benefit.
Reading the YTD Column
The Year-to-Date column is your running tally from January 1st through the current pay stub. Use it to:
- Track your 401(k) contributions to ensure you're on pace to hit the annual limit ($23,500 in 2026)
- Monitor your Social Security wages to know when withholding will stop for the year
- Verify your W-2 in January by comparing YTD gross pay and withholding to W-2 Box amounts
- Project your full-year taxes by multiplying current-period amounts by remaining pay periods
How to Verify Your Pay Stub Is Correct
Verify gross pay
Annual salary ÷ pay periods = expected gross. For hourly, multiply hours × rate.
Check FICA percentages
Social Security should be 6.2% of gross. Medicare should be 1.45% of gross. These are fixed rates — if the numbers are off, flag it immediately.
Confirm benefit deductions
Review each benefit deduction against your benefits enrollment confirmation.
Compare to last stub
Unless your pay changed, this period's amounts should closely match the previous one.
Add it up
Gross Pay − All Deductions should equal Net Pay. If it doesn't, there's a math error somewhere.
What to Do If You Find an Error
Don't wait — payroll errors are much easier to correct in the same or next pay period. Contact your HR or payroll department promptly with the specific line item that looks incorrect and why. In most cases, legitimate errors will be corrected in the next paycheck, sometimes accompanied by a makeup payment or credit.
Keep records of your communications. If an error persists for more than two pay periods, escalate to your HR manager or, for wage violations, contact your state's Department of Labor.
Calculate Your Expected Net Pay
Use our paycheck calculator to estimate what your net pay should be based on your salary, state, and filing status. If the result differs substantially from your actual pay stub, it may indicate a withholding issue worth investigating.