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Pay & Tax

Overtime Calculator

Time-and-a-half, double time and weighted average rates.

What it does. Overtime is normally the regular rate multiplied by a premium — 1.5× is the common statutory minimum, 2× applies in some contracts and jurisdictions. The complication is what counts as the regular rate: in the US it includes non-discretionary bonuses and shift differentials, not just the base hourly rate.
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How to use Overtime Calculator

  1. Enter your regular rate and hours.
  2. Add overtime hours at each applicable multiplier.
  3. Check the weighted average if you work at more than one rate.

The regular rate is not always the base rate

This is where overtime is most often underpaid, and usually not deliberately.

Under the US Fair Labor Standards Act the "regular rate" used to compute overtime includes non-discretionary bonuses, shift differentials and most commissions — not merely the hourly base. A production bonus therefore raises the overtime rate for the period it covers.

Discretionary bonuses, genuine gifts and paid time off are excluded. The distinction is whether the payment was promised or expected in advance; if it was, it belongs in the regular rate.

When overtime is owed

  • US federal: over 40 hours in a workweek, at 1.5×. There is no federal daily overtime.
  • California and some other states: also over 8 hours in a day, and 2× beyond 12.
  • UK: no statutory overtime premium — it is contractual, though average pay must not fall below minimum wage.
  • EU: the Working Time Directive caps average weekly hours at 48; premiums are national or contractual.
  • Exempt employees are excluded, and exemption depends on duties and salary level, not job title.

"Exempt" being about duties rather than title matters: giving someone a manager title does not remove overtime entitlement if the actual work does not meet the test.

Two rates in one week

If you work at two different rates, overtime is not simply computed at whichever rate you happened to be on.

The weighted average method applies: total straight-time earnings divided by total hours gives the regular rate, and the overtime premium is calculated from that.

So a week of 30 hours at $20 and 20 hours at $25 gives a regular rate of $22 — and the ten overtime hours attract a premium based on $22, not on whichever rate the 41st hour fell under.

Frequently asked questions

What is time and a half?

1.5 times the regular rate — the standard US federal overtime premium for hours over 40 in a workweek.

Does a bonus affect my overtime rate?

A non-discretionary one does, under US rules. Production bonuses, shift differentials and most commissions raise the regular rate used to compute overtime for the period they cover. Genuinely discretionary bonuses do not.

Is there daily overtime?

Not under US federal law, which counts hours over 40 in a week. California and some other states add daily overtime over 8 hours and double time beyond 12.

Does the UK have statutory overtime pay?

No. There is no legal requirement for a premium — it is contractual. Average pay across the period must still not fall below the minimum wage.

How is overtime calculated at two different rates?

By weighted average: total straight-time pay divided by total hours gives the regular rate, and the premium comes from that — not from whichever rate the overtime hours happened to fall under.