Overtime Calculator

Overtime pay starts with two numbers: your regular hourly rate and the total hours you worked in a given workweek. Once you know those, the math is straightforward.

Under federal law, any hours beyond 40 in a single workweek must be compensated at a higher rate than your regular pay. Most workers are entitled to at least 1.5 times their normal hourly wage for those extra hours. Some states and employers go further, requiring double time in certain situations.

Here's the basic flow:

1. Determine your regular hourly rate.
2. Identify how many hours you worked in the workweek.
3. Subtract 40 from total hours to get your overtime hours.
4. Multiply overtime hours by your overtime rate (typically 1.5x your regular rate).
5. Add that amount to your regular pay for the week.

Simple in principle, but the details matter, especially when tips, bonuses, or multiple pay rates are involved.

The standard overtime formula is called time-and-a-half, which means you earn your regular rate plus half of it for every overtime hour worked.

The formula looks like this:

• Overtime Rate = Regular Hourly Rate × 1.5
• Overtime Pay = Overtime Hours × Overtime Rate
• Total Weekly Pay = (40 × Regular Hourly Rate) + Overtime Pay

So if you earn $20 per hour, your overtime rate is $30 per hour. Work 45 hours in a week and you'd earn $800 for the first 40 hours, then $150 for the 5 overtime hours, totaling $950 before taxes.

That half-time premium adds up fast, which is exactly why tracking hours carefully matters for both employees and employers.

Overtime is calculated on a workweek basis, not a pay period basis. That distinction trips a lot of people up. Even if you're paid biweekly, each individual 7-day workweek is evaluated on its own.

To find your overtime hours for a given week:

1. Add up all hours worked Monday through Sunday (or whatever 7-day period your employer designates as the workweek).
2. If the total exceeds 40, the excess is overtime.

For example, if you worked 48 hours in a week, you have 8 overtime hours. You can't average two weeks together and claim you only worked 40 hours each when one week was 48 and the other was 32. Each week stands alone.

Some employees track their hours through timesheets or apps, but always double-check against your pay stub. Errors happen, and catching them early is a lot easier than disputing them later.

It helps to see regular and overtime pay side by side, especially when you're reviewing a paycheck and want to confirm the numbers add up.

This breakdown assumes a flat hourly rate with no bonuses or additional compensation factored in. If you receive a non-discretionary bonus during the workweek, that bonus may need to be included when calculating your regular rate of pay, which can affect your overtime rate as well. It's a nuance that payroll departments deal with regularly.

The Fair Labor Standards Act (FLSA) is the federal law that governs overtime for most workers in the United States. It sets the floor, not the ceiling. States can and often do require more generous overtime protections.

Key FLSA rules to know:

• Overtime kicks in after 40 hours in a workweek, not after 8 hours in a day (federal rule; some states differ).
• The minimum overtime rate is 1.5 times the regular rate of pay.
• Salaried employees classified as exempt are not entitled to overtime. Exemptions apply to executive, administrative, professional, and certain other categories, provided their salary meets the minimum threshold set by the Department of Labor.
• A workweek is any fixed, regularly recurring period of 168 hours (7 consecutive 24-hour periods). Employers choose when it starts, but they can't change it just to avoid overtime liability.

Some states like California have daily overtime rules, requiring overtime pay after 8 hours in a single day. Always check your state's labor laws in addition to federal requirements.

Beyond time-and-a-half, some situations call for double time, meaning 2 times your regular hourly rate. Federal law doesn't require double time, but certain states (California being the most notable) and many union contracts do.

In California, for instance, double time applies when:

• You work more than 12 hours in a single workday.
• You work more than 8 hours on the seventh consecutive day of a workweek.

Outside of state law, double time often shows up in collective bargaining agreements for work on holidays, Sundays, or extreme shifts. If your employer offers double time voluntarily, that rate must be used consistently and documented in your employment agreement.

Other special pay situations worth knowing about include shift differentials (extra pay for working nights or weekends) and hazard pay. These additional amounts can affect your regular rate of pay calculation, which in turn affects how your overtime is computed.

Let's run through a few real-world scenarios to make the math concrete.

Example 1: Standard hourly worker
Rate: $18/hr | Hours worked: 46

• Regular pay: 40 × $18 = $720
• Overtime rate: $18 × 1.5 = $27/hr
• Overtime pay: 6 × $27 = $162
• Total: $882

Example 2: Higher earner with more overtime
Rate: $25/hr | Hours worked: 50

• Regular pay: 40 × $25 = $1,000
• Overtime rate: $25 × 1.5 = $37.50/hr
• Overtime pay: 10 × $37.50 = $375
• Total: $1,375

Example 3: California daily overtime
Rate: $22/hr | Hours in one day: 10 | Total weekly hours: 40

• Regular daily pay: 8 × $22 = $176
• Daily overtime (2 hours): 2 × $33 = $66
• Total for that day: $242 (rest of week calculated normally)

Running these numbers before your paycheck arrives is a good habit. It only takes a few minutes and can catch errors before they compound.

Getting overtime calculations right consistently takes a little discipline, but the payoff is fewer disputes and cleaner records for everyone involved.

• Track hours in real time. Don't rely on memory at the end of the week. Use a time-tracking app, a paper timesheet, or whatever system your employer provides, and update it daily.
• Know your workweek boundaries. Ask HR exactly when your employer's workweek starts and ends. It's not always Monday to Sunday.
• Understand your classification. If you're classified as exempt, confirm that your salary and job duties actually meet the legal requirements. Misclassification is more common than people realize.
• Account for all compensation. Non-discretionary bonuses and commissions can affect your regular rate of pay, which changes your overtime calculation. Keep records of every form of compensation you receive.
• Review your pay stub every period. Look at regular hours, overtime hours, and the rates applied. If something looks off, raise it with payroll right away.
• Know your state's rules. Federal law is the baseline, but your state may have stricter requirements around daily overtime, meal breaks, or minimum wage that affect your total pay.

Accurate payroll isn't just the employer's responsibility. Knowing how the numbers work means you're never left guessing whether your check is right.