Shift Premium Calculator
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A shift premium (also called a shift differential) adds extra pay for nights, weekends, rotating shifts, or hard-to-fill hours. Employers often quote it as a percentage of base pay, which makes the real weekly value easy to underestimate.
Enter ordinary hours and premium-eligible hours separately. The calculator applies the differential only to eligible hours, then shows total weekly pay and the blended hourly rate across the full week.
Shift Premium & Differential Pay Benchmarks
Weekly and annual pay comparisons across standard wage rates assuming 32 regular hours and 8 night/weekend shift hours with a 15% differential.
| Base Hourly Rate | Regular Pay (32 hrs) | Shift Premium (15%) | Total Weekly Pay | Blended Hourly Rate | Annualized Total |
|---|---|---|---|---|---|
| $15.00/hr | $480.00 | $18.00 | $618.00 | $15.45/hr | $32,136.00 |
| $18.00/hr | $576.00 | $21.60 | $741.60 | $18.54/hr | $38,563.20 |
| $20.00/hr | $640.00 | $24.00 | $824.00 | $20.60/hr | $42,848.00 |
| $22.00/hr | $704.00 | $26.40 | $906.40 | $22.66/hr | $47,132.80 |
| $25.00/hr | $800.00 | $30.00 | $1,030.00 | $25.75/hr | $53,560.00 |
| $30.00/hr | $960.00 | $36.00 | $1,236.00 | $30.90/hr | $64,272.00 |
| $35.00/hr | $1,120.00 | $42.00 | $1,442.00 | $36.05/hr | $74,984.00 |
| $40.00/hr | $1,280.00 | $48.00 | $1,648.00 | $41.20/hr | $85,696.00 |
*Calculated with 32 standard hours and 8 night/weekend premium hours at a 15% shift differential.
How the calculation works
Premium pay = base rate × premium percentage × premium hours.
Total weekly pay adds ordinary base pay for every hour plus the premium. Example: $22/hour, 32 ordinary hours, eight night hours, and a 15% differential = $880 base pay + $26.40 premium = $906.40, a blended $22.66/hour.
Source note: the U.S. Department of Labor night-work guidance explains that federal law does not independently require a night differential.
Frequently asked questions
How do I calculate a 15% shift differential?
Multiply the base hourly rate by 15%, then multiply that premium by the eligible shift hours. At $22/hour for eight premium hours: $22 x 15% x 8 = $26.40 extra.
Is a night shift premium required by federal law?
No. The U.S. Department of Labor says extra pay for night work is generally a matter of agreement between employer and employee. Overtime rules still apply when a covered nonexempt employee works more than 40 hours in a workweek.
Does shift differential count toward overtime?
Often yes. A nondiscretionary shift differential generally enters the regular-rate calculation used for overtime. This simple calculator values the premium itself; use the overtime calculator for weekly overtime and confirm payroll treatment with your employer.
What is a blended hourly rate?
It is total weekly pay divided by total hours. It lets you compare a mixed-shift schedule with another job that quotes one flat hourly rate.
Shift Differential & Premium Pay Guide (2026) →
Comprehensive guide to shift differential pay: 2nd and 3rd shift premiums, legal FLSA regular rate overtime calculations, and industry benchmarks.
Read full guide with worked examples →Related calculators
Method and statutory parameters last reviewed September 27, 2026. Built and tested by PullMesh. See our methodology and sources. Estimates are informational, not tax, payroll, or legal advice.