About this tool
What is an Overtime Calculator?
An overtime calculator is a payroll tool that computes your total earnings when you work beyond standard hours, applying the legally required overtime pay multipliers — typically 1.5× (time-and-a-half) for hours over 40 per week, or 2× (double time) for premium situations like holidays. Rather than doing the math manually, this tool handles all calculations instantly: regular pay, overtime pay, double-time pay, effective hourly rate, tax estimate, and take-home projection.
FLSA Overtime Law: What You Must Know
The Fair Labor Standards Act (FLSA) is the federal law governing overtime pay in the United States. Key rules:
- Threshold: Overtime is required for hours worked over 40 per workweek (not per day, not per bi-weekly period)
- Rate: Minimum 1.5× the regular rate of pay for all overtime hours
- Workweek definition: Any fixed 7-consecutive-day period (doesn't have to be Monday–Sunday)
- Non-exempt employees: Covered by FLSA — must receive overtime pay
- Exempt employees: Executive, administrative, professional roles earning above the salary threshold ($684/week as of 2024) are excluded
State overtime laws often exceed federal minimums. California is the most notable: overtime applies after 8 hours per day (not just 40/week), and double time applies after 12 hours in a day or on the 7th consecutive day of work. Always check your state's Department of Labor website.
How Overtime Pay Is Calculated
Standard Formula:
Regular Pay = Regular Hours × Hourly Rate
Overtime Pay = Overtime Hours × (Hourly Rate × 1.5)
Double-Time Pay = Double Hours × (Hourly Rate × 2.0)
Total Gross Pay = Regular Pay + Overtime Pay + Double-Time PayExample — Standard Week:
- Hourly wage: $20/hour
- Regular hours: 40
- Overtime hours: 8
- Regular Pay: 40 × $20 = $800
- Overtime Pay: 8 × $30 ($20 × 1.5) = $240
- Total: $1,040
Example — California Daily Overtime:
- 10 hours on Monday = 8 regular + 2 overtime
- 13 hours on Tuesday = 8 regular + 4 overtime + 1 double-time
- Both daily and weekly thresholds apply — whichever gives more pay to the employee
Who Is Eligible for Overtime Pay?
Eligible (Non-Exempt):
- Most hourly workers in any industry
- Salaried employees below the exemption threshold ($684/week federally)
- Many white-collar workers who don't meet all three FLSA exemption tests
- Part-time employees who cross 40 hours in a workweek
- Temporary and contract workers classified as employees
Not Eligible (Exempt):
- Executive, administrative, and professional employees earning salary above threshold AND meeting duty tests
- Outside sales employees
- Computer professionals earning $27.63+/hour or meeting salary test
- Certain transportation workers (regulated by DOT)
- Agricultural workers (different rules apply)
Misclassification Warning: Employers sometimes incorrectly classify workers as exempt or as independent contractors to avoid paying overtime. The FLSA looks at actual job duties, not just job titles. If you believe you've been denied overtime you're owed, contact the Department of Labor's Wage and Hour Division.
Overtime Rate Scenarios
| Scenario | Rate | When It Applies |
|----------|------|----------------|
| Standard Overtime | 1.5× | US federal: hours over 40/week |
| California Daily OT | 1.5× | Hours 9-12 in a single workday |
| California Double Time | 2.0× | Hours over 12 in a day, or 7th consecutive workday hours over 8 |
| Holiday Premium | 1.5× or 2.0× | Employer policy or union contract (not federally required) |
| Shift Differential | Varies | Night shift, weekend shift — added to base before OT calculation |
| Fluctuating Workweek | 0.5× extra | Specific FLSA calculation method for variable schedules |
Real-World Overtime Scenarios
Scenario 1 — Warehouse Worker:
$17/hour, works 48 hours during peak season. Regular: 40h × $17 = $680. Overtime: 8h × $25.50 = $204. Total: $884 (30% more than regular-only pay).
Scenario 2 — Healthcare Nurse:
$32/hour, works 4 × 12-hour shifts = 48 hours/week. Regular: 40 × $32 = $1,280. Overtime: 8 × $48 = $384. Total: $1,664/week, $86,528 annual projection.
Scenario 3 — Construction Foreman:
$28/hour, works 45 hours + 4 Sunday double-time hours. Regular: 40 × $28 = $1,120. OT 1.5×: 5 × $42 = $210. Double: 4 × $56 = $224. Total: $1,554.
Scenario 4 — Retail Manager:
$22/hour, works 55 hours during holiday weekend. Regular: 40 × $22 = $880. OT: 15 × $33 = $495. Total: $1,375 — worth knowing before you commit to extra shifts.
Scenario 5 — Is Extra OT Worth It?
Every hour at 1.5× gives you 50% more before taxes. After taxes (~30%), you net about 35% more per OT hour than a regular hour. Over 20 OT hours per month, that's meaningful additional income — but sustainable workload matters too.
Common Overtime Calculation Mistakes
1. Using salary ÷ 40 incorrectly for misclassified salaried employees: If a salaried non-exempt employee's regular rate changes with hours worked, the FLSA's "regular rate" calculation must account for all compensation. Use the FLSA regular rate formula, not just salary ÷ 40.
2. Not including all compensation in the regular rate: Bonuses, shift differentials, and piece-rate pay may need to be included in the "regular rate" before calculating overtime. Employers who exclude these undercount overtime owed.
3. Averaging hours across work periods: Overtime is determined per workweek, never averaged across two weeks. Working 50 hours one week and 30 hours the next means 10 hours OT owed — not 0 because the average is 40.
4. State law inconsistency: If you're in California, Colorado, Alaska, or other states with daily overtime rules, the federal 40-hour weekly rule is not sufficient. You must apply the stricter state standard.
5. Failing to track all hours worked: Working through lunch, responding to emails from home, or pre-shift prep time may all count as compensable work time. If it benefits the employer and the employer knows or should know about it, it likely counts.
Practical Usage Examples
Step-by-Step Instructions
Enter your regular hourly wage (e.g., $18.50 per hour).
Enter regular hours worked for the week (typically 40 hours for full-time).
Enter overtime hours worked (hours beyond your standard threshold, typically 40/week).
Optionally enter double-time hours (holidays, 7th consecutive day, or hours beyond 12/day in some states).
Results update automatically — see regular pay, overtime pay (1.5x), double-time pay (2x), and total gross earnings.
Review the tax estimate and projected take-home pay, plus annual earnings projection if this schedule repeats.
Core Benefits
Frequently Asked Questions
Overtime pay = Overtime Hours × (Hourly Rate × 1.5). For standard US federal overtime (FLSA), any hours over 40 in a workweek are paid at 1.5× the regular rate. Example: $20/hour, 45 hours worked = 40 regular hours ($800) + 5 overtime hours × $30 ($150) = $950 total gross pay.
Non-exempt employees — most hourly workers and salaried employees earning below $684/week ($35,568/year) — qualify for overtime. Exempt employees (executive, administrative, professional roles meeting specific duty and salary tests) do not. Job titles don't determine exemption; actual job duties do. When in doubt, contact the Department of Labor.
Under federal FLSA, overtime is calculated per workweek (hours over 40/week). Many states have additional daily overtime rules: California requires OT after 8 hours per day, Colorado after 12 hours/day, Alaska after 8 hours/day. If your state has daily OT rules, whichever calculation (daily vs. weekly) results in more pay for the employee must be applied.
Double-time (2× regular rate) is not federally mandated but applies in specific situations: California law requires it for hours over 12 in a day and for hours over 8 on the 7th consecutive workday. Many employers also offer it for holidays, emergency call-ins, or special shift conditions per company policy or union contracts.
No — overtime wages are taxed at the same rates as regular income. However, a paycheck with overtime income is larger, which means more total tax is withheld that period (it may temporarily push you into a higher withholding bracket). Your actual tax rate is based on annual income, and overpayment is refunded when you file your annual return.
Yes. If a part-time employee works more than 40 hours in a workweek (or exceeds the daily threshold in states with daily OT rules), FLSA overtime applies. Being designated "part-time" does not exempt someone from overtime requirements — hours actually worked determine eligibility.
Generally yes — most US employers can require overtime for non-exempt employees as a condition of employment, as long as overtime pay is provided. Exceptions: some industries have maximum hour limits for safety reasons (truckers, airline pilots, healthcare in some states), and employment contracts or unions may restrict mandatory OT.
As of 2024, employees earning a salary of $684/week ($35,568/year) or more may be exempt from overtime — but only if they also meet the "duties test" for executive, administrative, or professional roles. The salary threshold has changed multiple times and is subject to updates by the Department of Labor. Always verify the current threshold.
Overtime earns 1.5× your gross rate. After a typical combined tax rate of ~28-32% (federal income + FICA), you net roughly 1.02-1.08× your regular after-tax hourly rate per overtime hour. The 50% premium is partially offset by taxes, but it's still significantly more than regular hours. Use our tax estimate section for your specific situation.
You have rights. File a wage complaint with the U.S. Department of Labor's Wage and Hour Division (dol.gov/agencies/whd) or your state labor department. The statute of limitations is 2 years (3 years for willful violations). You can recover back wages, an equal amount in liquidated damages, and attorney's fees. Retaliation for filing a complaint is illegal under FLSA.