How to Calculate Time and a Half: Step-by-Step Guide

How to Calculate Time and a Half Overtime Pay by Hand in 2026

Understanding how to calculate time and a half pay manually helps you verify your paycheck and know your rights. While our Time and a Half Calculator does the math instantly, walking through the steps yourself builds confidence. This guide covers everything from the basic formula to real-world examples.

What You'll Need

• Your regular hourly rate (e.g., $20/hour)
• Your pay stub or time sheet showing regular and overtime hours
• A calculator or pen and paper
• Knowledge of your workweek definition (usually 40 hours in the U.S.)

Step-by-Step Instructions

1. Determine your regular hourly rate. This is the amount you earn per normal hour before any overtime. For example, if you earn $800 for a 40-hour week, your regular rate is $20.
2. Identify overtime hours. Overtime is typically any hours worked beyond 40 in a workweek under the FLSA. Check your records for hours above this threshold.
3. Calculate regular pay. Multiply your regular hours by your hourly rate: Regular Pay = Regular Hours × Hourly Rate. Example: 40 hours × $20 = $800.
4. Find the overtime rate. Multiply your regular hourly rate by 1.5: Overtime Rate = Hourly Rate × 1.5. For $20/hour, that's $20 × 1.5 = $30/hour.
5. Calculate overtime pay. Multiply overtime hours by the overtime rate: Overtime Pay = Overtime Hours × Overtime Rate. Example: 10 hours × $30 = $300.
6. Add regular and overtime pay. Your total gross pay is the sum: Total Gross Pay = Regular Pay + Overtime Pay. In the example, $800 + $300 = $1,100.
7. (Optional) Account for taxes. Multiply total gross pay by your tax rate (e.g., 22%) to find the tax amount, then subtract to get net pay. Net Pay = Total Gross Pay – (Total Gross Pay × Tax Rate). For $1,100 at 22% tax: $1,100 × 0.22 = $242 tax; $1,100 – $242 = $858 net.

For a deeper dive into the formula itself, see our Time and a Half Formula page, which breaks down each component.

Worked Example 1: Standard Week

Scenario: Maria works 40 regular hours and 12 overtime hours at an hourly rate of $18.50.

• Regular pay: 40 × $18.50 = $740
• Overtime rate: $18.50 × 1.5 = $27.75
• Overtime pay: 12 × $27.75 = $333
• Total gross pay: $740 + $333 = $1,073

If Maria's tax rate is 20%, her net pay would be $1,073 – ($1,073 × 0.20) = $858.40.

Worked Example 2: Part-Time with Overtime

Scenario: John works only 30 regular hours but also 8 overtime hours (still beyond 40? Actually, if his regular workweek is defined as 30, overtime may start after 30 unless FLSA applies. For this example, assume the standard 40-hour threshold: his 30 regular hours plus 8 overtime means he worked 38 total, so no overtime pay. But to illustrate, we'll use an employer policy that pays overtime after 8 hours in a day. Let's keep it simple: John's regular rate is $25/hour, he worked 45 hours total (35 regular + 10 overtime).

• Regular pay: 35 × $25 = $875
• Overtime rate: $25 × 1.5 = $37.50
• Overtime pay: 10 × $37.50 = $375
• Total gross pay: $875 + $375 = $1,250

After 22% taxes: $1,250 × 0.22 = $275 tax; net pay = $975.

Common Pitfalls to Avoid

• Mixing up regular and overtime hours. Always separate hours correctly. Use your time sheet to track exactly which hours are overtime.
• Forgetting to multiply by 1.5. The overtime rate is not the same as your regular rate. Calculate it carefully.
• Ignoring state laws. Some states require overtime after 8 hours per day, not just after 40 per week. Check local regulations. Our page on Time and a Half for Non-Exempt Employees covers these nuances.
• Using gross pay for tax calculation incorrectly. Remember that tax is applied to total gross pay before deductions.
• Rounding errors. Keep your numbers precise with two decimal places throughout, then round at the end.

If you want to quickly check your manual calculations, use our Time and a Half Calculator for instant results. For a complete definition, visit What Is Time and a Half?.