Calculator

Paycheck difference calculator

Estimate the gross pay for one pay period from your hours and rate, then compare it with the gross pay on your paycheck. If the numbers differ, see which lines differ and what the arithmetic says about the gap. Everything is calculated on this page, in your browser: nothing you enter is sent anywhere or saved.

Your pay period

Your estimate

Totals for exactly the pay period on the paycheck. Work out overtime week by week first: the overtime calculator splits a week’s hours, and the work hours calculator adds up shifts and breaks.

Before taxes, in US dollars. If you leave it empty, hours and tips are still compared, but the gross pay can’t be.

Paid hours after unpaid breaks, like 40, 37.75 or 37:45. Leave overtime empty if there was none.

Overtime multiplier

Only tips and bonuses paid through payroll, which appear in gross pay. Leave empty if none.

Your paycheck

The total before taxes and deductions, not your take-home pay.

Optional. Copy these exactly as printed, decimals included: 38.50 is compared at two decimal places, 38.5 at one. Lines you leave empty aren’t compared.

Example

Paycheck compared with your estimate

↓ Paycheck lower

−$69.00

The paycheck’s gross pay is lower than your estimate.

Your estimate, gross
$1,127.00
Paycheck, gross
$1,058.00
Difference (paycheck − estimate)
−$69.00

What the lines show

  • Possible contributor Overtime hours: 2 fewer on the paycheck (4 vs 6 in your estimate). −2 h × $34.50 = −⁠$69.00. Accounts for the full difference.

Your estimate

LineAmount
Regular pay40h 00m × $23.00$920.00
Overtime pay6h 00m × $34.50 ($23.00 × 1.5)$207.00
Estimated gross pay$1,127.00

Line by line

LineYour estimatePaycheckDifferenceResult
Gross pay$1,127.00$1,058.00−$69.00≠ Differs
Regular hours40.00 h——Not entered
Overtime hours6 h4 h−2 h≠ Differs
Tips$0.00——Not entered

Difference is paycheck minus estimate: a minus sign means the paycheck shows less. Hours are compared at the decimal places you typed from the paycheck, with your hours rounded to the same places. Bonus is part of the estimated gross pay but isn’t compared as a line of its own.

How to check a paycheck against your hours

  1. Use the pay period printed on the paycheck and the hours you worked in exactly that period.
  2. Split regular and overtime hours week by week. Under the US Fair Labor Standards Act, overtime is counted per workweek and hours can’t be averaged across weeks, so in a two-week pay period work out each week first, then add the weeks.
  3. Estimate gross pay: regular hours × rate, plus overtime hours × rate × multiplier, plus any tips and bonuses paid through payroll. Round each line to the cent, then add them.
  4. Compare gross with gross, not with your take-home pay, which is after taxes and deductions.
  5. Compare the lines the paycheck shows, such as regular hours, overtime hours and tips, to see where a difference may come from.
estimated gross = regular hours × rate + overtime hours × rate × multiplier + tips + bonus

Worked example

You worked 40 regular hours and 6 overtime hours at $23.00 an hour, with overtime at time and a half. The paycheck shows $1,058.00 gross and 4 overtime hours.

Estimate and paycheck for the same pay period
LineCalculationAmount
Regular pay40h × $23.00$920.00
Overtime pay6h × $34.50 ($23.00 × 1.5)$207.00
Estimated gross$1,127.00
Paycheck gross$1,058.00
Difference$1,058.00 − $1,127.00−$69.00

The paycheck shows 2 fewer overtime hours than your record. At $34.50 an overtime hour, 2 hours is $69.00, the same as the whole difference, so the overtime hours are a possible contributor that accounts for all of it. That’s arithmetic, not a conclusion: the next step is to find out why the hours differ, for example by comparing the dates, or by asking whether some overtime will be paid on the next paycheck.

Reading the result

Only lines that move in the same direction as the gross difference count as possible contributors. If the paycheck is lower overall but shows more regular hours, those extra hours can’t explain a lower total, so they’re listed as a line that differs, without counting toward the explanation.

Why hours are compared at the paycheck’s precision

Paychecks print hours in different ways: 38.5, 38.50 or 38.333. Your 38 hours 20 minutes is 38.3333… hours, which a paycheck may print as 38.33 or 38.3. The calculator rounds your hours to the number of decimal places you typed, half up, before comparing, so 38.33 and 38.3 both match. Typing 38.30 asks for a two-decimal comparison, which shows a 0.03-hour difference.

Common reasons a paycheck differs

For a full walkthrough with the pay stub in hand, read how to check your paycheck against your hours. If a number still doesn’t match, your payroll team, the U.S. Department of Labor’s Wage and Hour Division or your state labor department can explain the rules that apply to you.

What this calculator doesn’t do

Questions

Should I compare gross pay or net pay?

Gross pay. It’s what your hours, rate, overtime, tips and bonuses add up to before taxes and deductions. Net pay depends on withholding and deductions this calculator doesn’t estimate.

What if my paycheck covers two weeks?

Enter the totals for both weeks, but work out the overtime hours week by week first: 46 hours one week and 34 the next is 6 overtime hours, not zero, even though the two weeks average 40.

Why isn’t a difference in hours given a dollar amount?

An hours difference is priced only when all of that kind of time has one hourly amount. If your estimate has no overtime hours, for example, there’s nothing to price extra overtime hours at, so they’re shown as a line that differs without an amount. The same goes when there’s no rate.

Why is my bonus not compared as its own line?

Paychecks name bonuses in many different ways, so the bonus is included in your estimated gross pay but not compared separately. If a bonus is missing from the paycheck, it shows up in the gross difference.

Does a difference mean I was paid wrong?

Not necessarily. The paycheck may cover a slightly different period, include pay from an earlier week, or use rules your estimate doesn’t. The calculator shows where the numbers differ so you know what to ask about.

Are my numbers stored or sent anywhere?

No. The calculation runs on this page, in your browser. Nothing you type is sent to a server or saved, and reloading the page clears it. This website sets no cookies and has no analytics.

Sources

Checked October 24, 2026. This calculator and page explain common calculations. They aren’t legal, tax or financial advice.