Blended Rate Overtime Calculator

Blended rate versus simple overtime rate

A simple overtime calculator usually starts with one hourly rate. A blended rate calculator starts with the reality that one workweek may include several rates. The calculator totals earnings across those rates and divides by total hours to estimate a blended regular rate. It then estimates the additional overtime premium from that blended rate.

People often use the phrase blended rate because it is the practical payroll term they see on a pay stub, schedule system, or internal explanation. Weighted overtime describes the underlying math more directly. Both concepts point to the same core issue: a single overtime estimate may need to account for all rates in the workweek.

When a blended rate may be used

A blended rate estimate may be relevant when an employee works two roles at different wages, moves between departments, covers a lead assignment for part of a week, or works a mix of billable job codes. It can also help managers and workers check whether a mixed-rate week has been summarized consistently.

For U.S. federal overtime discussions, many covered nonexempt employees must receive overtime pay at not less than one and one-half times the regular rate for hours worked over 40 in a workweek. That general rule still has coverage, exemption, regular-rate, and special-rule details. This calculator only estimates the arithmetic after the user enters the rates and hours.

Blended overtime formula

If you enter a manual blended rate override, the calculator uses that rate for the premium estimate while still showing earnings before the overtime premium from the entered rows.

The override is useful when payroll has already supplied a blended rate and you want to estimate the premium from that number. Leave it blank when you want the calculator to compute the blend from the rows.

Blended regular rate = Total straight-time earnings / Total hours worked
Overtime hours = Total hours worked - Overtime threshold
Additional overtime premium = Blended regular rate x (Multiplier - 1) x Overtime hours
Estimated total pay = Straight-time earnings + Additional overtime premium

Example with two job roles

Imagine a worker spends 30 hours in a warehouse role at $20 per hour and 15 hours as a lead at $28 per hour. Straight-time earnings are $1,020 and total hours are 45, so the blended rate is $22.67. With a 40-hour threshold, five hours are overtime. At a 1.5x multiplier, the additional premium is $56.67.

How it differs from single-rate overtime

In a single-rate week, the overtime rate is usually easy to estimate: hourly rate times the overtime multiplier. In a blended-rate week, the regular rate may sit between the lowest and highest rates. Using only one role rate can make the estimate too high or too low.

This page is best for mixed-rate weeks. If your question is about a bonus affecting the regular rate, use the overtime calculator with bonus. If your question is about night or weekend differential pay, use the shift differential overtime calculator.

Limitations and review points

The calculator does not determine whether a blended-rate method is required or whether a different approved method applies. It does not decide employee classification, overtime eligibility, state overtime rules, union contract terms, or industry exceptions.

Use the result as a transparent math check. If the pay stub uses different included earnings, excludes certain payments, or allocates overtime under a written agreement, the payroll result may differ from this simple blended-rate estimate.