Overtime Cost Calculator
Overtime Doesn't Just Cost More Per Hour — It Compounds Fast
A department that looks fine on its base labor budget can still blow past projections entirely on overtime, because the premium isn't a small surcharge — it's a straight multiplier stacked on top of an already-budgeted hourly rate. A handful of employees working consistent overtime at time-and-a-half adds up to a meaningfully different labor cost than the base staffing plan assumed.
The Formula
Overtime Cost = Overtime Hours × Overtime Pay Rate
In the United States, the Fair Labor Standards Act requires covered non-exempt employees to be paid at least 1.5× their regular rate for hours worked beyond 40 in a workweek — the standard "time-and-a-half" multiplier this calculator defaults to. Some employers, union contracts, or holiday-work policies apply a higher multiplier, such as double time.
Why Overtime Cost Needs Its Own Line Item
- Labor budget accuracy — treating overtime as a rounding error rather than calculating it explicitly is one of the most common ways a department's actual labor spend diverges from its planned budget.
- Staffing vs. overtime tradeoff — comparing the projected cost of consistent overtime against the cost of hiring an additional employee is a standard workforce planning decision this number feeds directly into.
- Compliance exposure — miscalculating overtime pay, or misclassifying employees as exempt when they should receive overtime, is a frequent source of wage-and-hour compliance risk.
- Peak-season forecasting — retail, hospitality, and seasonal operations rely on overtime cost projections to budget accurately for predictable demand spikes rather than being surprised by them after the fact.
Overtime Cost by Multiplier
| Multiplier | OT Pay Rate | Cost for 10 OT Hours |
|---|---|---|
| 1.5× (time-and-a-half) | $37.50/hr | $375.00 |
| 2.0× (double time) | $50.00/hr | $500.00 |
Computed directly from the formula above for a fixed $25/hour base rate and 10 overtime hours.
How to Use This Calculator
- Enter Overtime Hours worked.
- Enter the Regular Hourly Rate ($).
- Optionally enter the Overtime Multiplier; it defaults to 1.5 if left blank.
- Select Calculate to see the overtime pay rate and total overtime cost.
Related Calculations
Fold overtime into a full compensation picture with the Employee Cost Calculator, or check whether current staffing levels are adequate with the Headcount Planning Calculator.