Overtime Premium Calculator
Standard Formula
Overtime Premium = Hourly Rate × 0.5 × Overtime Hours
Isolating the half-rate premium is helpful for tax deductions (like proposed No Tax on Overtime) or payroll accounting.
How Overtime Premium Calculator Works?
The Overtime Premium Calculator works by multiplying the hourly rate by 0.5 and by the overtime hours, isolating the extra half-time pay. The tool shows the premium, the straight-time part, and the full 1.5× total side by side.
1Enter the regular rate
Type the base wage, for example $28.00 per hour.
2Enter overtime hours
Add the hours paid at time and a half during the workweek.
3Read the premium
The tool returns rate × 0.5 × hours. 8 hours at $28.00 equals a $112.00 premium.
4Compare the 3 parts
The calculator lists the $224.00 straight-time part and the $336.00 full overtime total.
Overtime Premium Calculator Formula
The Overtime Premium Calculator formula is Overtime Premium = Hourly Rate × 0.5 × Overtime Hours.
Half-time rate
Half-Time Rate = Hourly Rate × 0.5
Overtime premium
Premium = Half-Time Rate × OT Hours
Straight-time part
Straight Part = Hourly Rate × 1.0 × OT Hours
- Hourly Rate
- Regular rate of pay in $/hr.
- 0.5
- The half-time share of the 1.5× overtime rate.
- Premium
- The extra pay above straight time for overtime hours.
Worked example: deduction-eligible premium
A worker earns $30.00 per hour and works 300 overtime hours in a year.
Premium = $30.00 × 0.5 × 300 = $4,500.00.
The $4,500.00 premium is the qualified overtime amount for the federal deduction, under the $12,500 single-filer cap.
Overtime Premium Calculator Conversion Table
The Overtime Premium Calculator conversion table shows the half-time premium for 10 overtime hours and for 250 annual overtime hours at 8 base wages.
| Base Rate | Half-Time Rate (0.5×) | Premium for 10 OT Hours | Straight Part for 10 Hours | Premium for 250 OT Hours/yr |
|---|---|---|---|---|
| $16.00 | $8.00 | $80.00 | $160.00 | $2,000.00 |
| $20.00 | $10.00 | $100.00 | $200.00 | $2,500.00 |
| $24.00 | $12.00 | $120.00 | $240.00 | $3,000.00 |
| $28.00 | $14.00 | $140.00 | $280.00 | $3,500.00 |
| $32.00 | $16.00 | $160.00 | $320.00 | $4,000.00 |
| $40.00 | $20.00 | $200.00 | $400.00 | $5,000.00 |
| $50.00 | $25.00 | $250.00 | $500.00 | $6,250.00 |
| $65.00 | $32.50 | $325.00 | $650.00 | $8,125.00 |
What is Overtime Premium Calculator?
An Overtime Premium Calculator is a tool that separates the half-time premium from the straight-time part of overtime pay. Every 1.5× overtime hour contains 1.0× straight pay plus a 0.5× premium.
The premium matters in 3 places: federal tax (the One Big Beautiful Bill Act (OBBBA) deduction covers only the premium), regular-rate math for bonuses and piece work (only 0.5× is still owed), and accounting (some employers book the premium to a separate ledger account).
The federal overtime deduction applies for tax years 2025 through 2028, up to $12,500 per filer or $25,000 for joint returns, and phases out above $150,000 of modified adjusted gross income ($300,000 joint).
What are the uses of Overtime Premium Calculator?
There are 4 main uses of the Overtime Premium Calculator.
Overtime tax deduction
Taxpayers compute the qualified overtime premium reported on Form W-2 or a separate statement.
Half-time pay plans
Payroll staff compute the 0.5× owed when straight pay already covers all hours, as with piece rates.
Cost accounting
Finance teams book premium cost apart from straight labor cost.
Pay transparency
Workers see the exact dollar value that overtime adds above their normal wage.