How this instrument works
An overtime paycheck estimate answers a question a plain wage calculation cannot: not just what a worker earned by the hour, but what actually lands in the bank once the extra hours and the tax bite are both counted. The formula runs in two stages on purpose. First it prices two kinds of hours separately — regular hours at the straight rate and overtime hours at the rate times a multiplier — and adds them into gross pay. Only then does it apply a single withholding percentage to that gross figure, because take-home pay is the number a worker actually holds, not the number printed at the top of the stub.
This is built for a single pay period, not a year. Someone who picked up a run of overtime shifts — a warehouse packer working a holiday surge, a nurse covering an extra shift, a line cook staying late through a rush — wants to know before payday roughly how much of that overtime actually shows up as cash, since a bigger gross number does not translate dollar for dollar into a bigger deposit. A manager sanity-checking an hourly offer that includes routine overtime reaches for the same two-step arithmetic.
The withholding percentage is a stand-in, not a computed tax bill. A real paycheck applies progressive federal brackets, a state rate that varies by location, and FICA, then layers on pre-tax deductions such as a 401(k) contribution or a health premium — all folded here into one flat percentage the user supplies. The instrument also assumes the two kinds of hours are already sorted; it does not decide whether a worker crossed a 40-hour weekly threshold or a state's daily-overtime rule, since those thresholds vary and some states set stricter rules than the federal one.
- Enter Hourly rate, $ — the straight-time rate before any overtime premium.
- Set Regular hours (up to 40) to the hours worked at the standard rate.
- Set Overtime hours (beyond 40) to the hours worked past that point.
- Confirm Overtime multiplier — 1.5 for standard time-and-a-half, higher if a contract or holiday rate applies.
- Set Combined tax withholding, % to the share of gross pay withheld for federal, state, and payroll tax together, then read Gross pay, $ and Net (take-home) pay, $.
Worked example — a 50-hour week at $20 an hour
Set Hourly rate, $ to 20, Regular hours (up to 40) to 40, Overtime hours (beyond 40) to 10, and Overtime multiplier to 1.5 — a worker who logged ten hours of overtime on top of a full standard week. Regular hours contribute 40 times 20, or $800.00; overtime hours contribute 10 times 20 times 1.5, or $300.00. Gross pay adds the two lines to $1,100.00.
With Combined tax withholding, % set to 22 — a rough stand-in for federal, state, and FICA withholding together — Net (take-home) pay, $ comes to $1,100.00 times 0.78, which is $858.00. The overtime hours alone added $300 to gross pay, but roughly $66 of that never reaches the bank, since withholding runs at the same 22% across the whole check, not just the regular portion.
Questions
Does the overtime multiplier apply to the whole paycheck?
No — it applies only to the hours entered in Overtime hours (beyond 40). Regular hours (up to 40) are still priced at the plain Hourly rate, $, so a 1.5 multiplier lifts only the overtime slice of gross pay, not the standard 40 hours sitting underneath it.
What should I put in Combined tax withholding, %?
Add together the share of a paycheck typically withheld for federal income tax, state income tax where it applies, and FICA (Social Security and Medicare), then enter that combined figure. A recent pay stub is the most reliable source — divide the total withheld by gross pay from the same period to back into a realistic percentage.
How is this different from a calculator that projects a full year's pay with overtime?
This instrument prices one pay period and stops at withholding, not an annual total. A year-long projection multiplies a typical week by weeks worked to estimate gross salary, but it has no withholding step and answers a different question — what a schedule is worth over twelve months, not what a specific check pays out after tax.
Does this apply California's daily overtime rule?
No. The instrument takes Regular hours (up to 40) and Overtime hours (beyond 40) exactly as entered — it does not compute which hours count as overtime under any state's law. California and a few other states pay a premium once a single day passes eight hours, even in a week that never reaches 40; sort hours according to the rule that actually covers the job before entering them here.
Why might my real paycheck differ from Net (take-home) pay, $ here?
Because Combined tax withholding, % is a single flat percentage standing in for a stack of separate deductions. A real stub applies progressive tax brackets rather than one flat rate, and it may subtract pre-tax items such as a 401(k) contribution or a health insurance premium before tax is even calculated — neither of which this simplified two-step formula can see.
References
- U.S. Department of Labor — Overtime pay requirements (FLSA)
- IRS — Estimate your paycheck withholding
Read this first: This instrument shows arithmetic, not advice. Real offers add fees, taxes and terms that vary by lender and place — verify the figures against your actual paperwork before deciding anything.