How to Calculate Overtime Pay: Step-by-Step Guide

Knowing how to calculate overtime starts with one formula: multiply the employee's regular rate of pay by 1.5 for every hour worked past 40 in a workweek. An employee earning $18 per hour who works 47 hours earns $27 per overtime hour, adding $189 in overtime wages on top of their regular paycheck.

What Is the FLSA Overtime Rule?

The Fair Labor Standards Act (FLSA), codified at 29 U.S.C. 207, requires most U.S. employers to pay non-exempt employees at least one and one-half times their regular rate of pay for all hours worked beyond 40 in a single workweek. This legal overtime standard covers the vast majority of hourly workers across the country.

Understanding how overtime works means knowing a few key definitions:

• Workweek: A fixed, regularly recurring period of 168 consecutive hours, typically seven calendar days. The employer sets the start day. Sunday through Saturday is common, but any fixed seven-day period works. Once established, the workweek cannot be changed specifically to avoid paying overtime wages.
• Non-exempt employee: Any employee who does not qualify for a recognized FLSA exemption. Most hourly workers are non-exempt. Many salaried workers earning below the federal salary threshold are also non-exempt and entitled to overtime wages.
• Hours worked: Any time the employer suffers or permits an employee to work. Any time the employer knows or should know an employee worked is considered hours worked, including pre-shift setup, post-shift cleanup, and unauthorized overtime the employer was aware of.

By definition, overtime is work performed beyond 40 hours in a workweek for non-exempt employees. Paid time off, sick days, and holiday hours generally do not count as hours worked for FLSA purposes unless a company policy or collective bargaining agreement says otherwise. An employee who uses 8 PTO hours on Monday and works 40 actual hours the rest of the week has not hit the overtime threshold because only 40 hours were worked.

The overtime rule applies per workweek, not per pay period. You cannot average hours across two weeks. If an employee works 50 hours one week and 30 the next, you owe 10 hours of overtime for week one. How much is overtime owed depends entirely on that individual workweek, full stop.

What Is the Formula for Calculating Overtime Pay?

Three numbers drive every overtime calculation: the regular rate of pay, the 40 straight-time hours, and the overtime hours. Here is the formula for how to calculate overtime pay:

Overtime pay = Regular rate x 1.5 x Overtime hours
Total weekly pay = (Regular rate x 40) + (Regular rate x 1.5 x Overtime hours)

To find the overtime rate, multiply the regular rate by 1.5. This is time and a half overtime pay, the phrase used interchangeably with "overtime rate" in most HR and payroll conversations. For the $18 per hour employee working 47 hours:

• Regular pay: $18 x 40 hours = $720
• Overtime rate: $18 x 1.5 = $27.00 per hour
• Overtime pay: $27 x 7 hours = $189
• Total gross pay: $720 + $189 = $909

That is the FLSA minimum. Your company policy can pay more, but never less. How much overtime an employee earns in a given week depends on how many hours past 40 they clock and what their actual regular rate is once all required payments are included.

How to Calculate the Regular Rate of Pay

The regular rate of pay is not simply the base hourly wage. Under 29 CFR 778.107, the regular rate is the rate at which an employee is actually employed, and it cannot fall below the applicable minimum wage. In practice the regular rate must include payments beyond base wages:

• Base hourly wages
• Non-discretionary bonuses: production bonuses, attendance bonuses, any bonus tied to a formula the employee knew about in advance
• Shift differentials: extra pay for evening, overnight, or weekend shifts
• Commissions paid as straight compensation

Items excluded from the regular rate include gifts, vacation pay paid as wages, holiday and overtime premium pay already paid under certain conditions, and purely discretionary bonuses where the employer decides both the amount and whether to pay at all.

Here is why this matters in dollars. An employee earns $18 per hour plus a weekly non-discretionary production bonus of $80. Their regular rate is not $18. Here is the correct calculation:

1. Total straight-time earnings: ($18 x 40 hours) + $80 bonus = $720 + $80 = $800
2. Regular rate: $800 / 40 hours = $20.00 per hour
3. Overtime rate: $20.00 x 1.5 = $30.00 per hour

Calculating overtime at $18 instead of $20 underpays this employee $2 per overtime hour. A crew of 10 workers each putting in 7 overtime hours a week for 50 weeks accumulates $7,000 in back wages, plus an equal amount in liquidated damages. Getting the regular rate right before applying the overtime multiplier is the most commonly missed step in payroll overtime processing.

Worked Examples: Calculate Overtime Pay at Five Common Wage Rates

The table below shows gross pay for an employee working 47 hours in a week at five common hourly rates. All calculations use the FLSA overtime formula: regular rate x 1.5 x 7 overtime hours. Run any scenario through Kloqk's overtime calculator without building a spreadsheet.

Hourly Rate	Overtime Rate	Regular Pay (40 hrs)	Overtime Pay (7 hrs)	Total Gross Pay
$15.00	$22.50	$600.00	$157.50	$757.50
$18.00	$27.00	$720.00	$189.00	$909.00
$20.00	$30.00	$800.00	$210.00	$1,010.00
$22.00	$33.00	$880.00	$231.00	$1,111.00
$25.00	$37.50	$1,000.00	$262.50	$1,262.50

How to Calculate Overtime Pay for Salaried Employees

Salaried employees are not automatically exempt from overtime. Non-exempt salaried workers who do not meet the FLSA duties test for executive, administrative, or professional exemptions, and who earn below the federal salary threshold, are entitled to overtime wages for hours past 40.

To calculate overtime pay per hour for a salaried non-exempt employee:

1. Identify the weekly salary
2. Divide by the number of hours the salary covers (usually 40) to get the regular hourly rate
3. Multiply that regular rate by 1.5 for each overtime hour

Example: A salaried employee earning $700 per week for 40 hours. Regular rate: $700 / 40 = $17.50 per hour. Overtime rate: $17.50 x 1.5 = $26.25 per hour. Working 45 hours that week, the overtime payment is $26.25 x 5 = $131.25, added to the $700 salary for total gross pay of $831.25.

If the offer letter does not specify the hours expectation, the FLSA provides a fluctuating workweek formula that is more complex. Most small businesses avoid that path by tying salary offers explicitly to 40-hour weeks in writing. When calculating overtime pay in Excel for salaried employees, the formula is the same: weekly salary divided by 40 gives the regular rate, multiplied by 1.5 for each overtime hour.

Multi-Rate Employees: The Weighted Average Method

Some employees work two jobs at different pay rates in the same workweek. A team member at an elite restaurant might spend 30 hours at $16 per hour as a prep cook and 15 hours at $14 per hour as a dishwasher, totaling 45 hours. Under 29 CFR 778.415, two calculation methods apply.

The rate-in-effect method (requires a prior written agreement) pays each overtime hour at 1.5 times the rate for the work performed during that overtime period. The weighted average method applies by default and works like this:

1. Calculate total straight-time earnings: (30 hrs x $16) + (15 hrs x $14) = $480 + $210 = $690
2. Compute the weighted average regular rate: $690 / 45 total hours = $15.33 per hour
3. Apply the overtime premium only (the 0.5 extra, since straight-time pay is already in the $690): $15.33 x 0.5 x 5 overtime hours = $38.33
4. Total pay: $690 + $38.33 = $728.33

Step 3 uses 0.5, not 1.5, because the full straight-time wages are already paid in the $690 base. Adding the full regular rate again would double-count that portion. The overtime premium is the half increment that converts straight time into time and a half for the overtime hours.

How to Calculate Overtime on a Semi-Monthly Pay Period

Overtime is always calculated per workweek, never per pay period. That creates friction with semi-monthly payroll, which runs on calendar dates such as the 1st and the 15th that do not line up with fixed seven-day workweeks. A single semi-monthly period can span parts of three different workweeks.

The process for calculating overtime on a semi-monthly pay period:

1. Identify each workweek (your fixed 7-day cycle, for example Sunday through Saturday) that falls within or overlaps the pay period
2. Total the hours worked in each workweek separately
3. Identify overtime hours per workweek independently, meaning any hours past 40 in that specific seven-day period
4. Calculate the overtime pay owed for each workweek
5. Sum across all workweeks that fall inside the pay period

Biweekly payroll (every 14 days, 26 periods per year) aligns cleanly with two complete workweeks, which makes overtime calculation more straightforward. If you calculate timesheet data manually in Excel, always track hours by workweek, not by pay period. Most payroll software handles the workweek-to-period mapping automatically once you configure the correct workweek start day.

California Overtime: Daily Limits and Double Time

California overtime law exceeds the FLSA standard in two significant ways. Under California Labor Code Section 510, this ca overtime law triggers at the daily level, not just weekly. CA overtime rules are different from Texas, Florida, and most other states that follow the federal weekly-only threshold.

• 1.5x for hours past 8 in a workday: An employee who works 10 hours on a Tuesday earns 2 overtime hours for that day, even if the weekly total stays under 40.
• 2x (double time) for hours past 12 in a workday: Any hours worked beyond 12 in a single day trigger double the regular rate.
• 1.5x on the 7th consecutive workday: The first 8 hours worked on the seventh consecutive day in a workweek pay at 1.5x the regular rate.
• 2x beyond 8 hours on the 7th day: Hours past 8 on the seventh consecutive workday pay at double time.

To calculate double overtime pay in California, multiply the regular rate by 2 for each double-time hour. An employee at $20 per hour who works 14 hours in a day earns: ($20 x 8) + ($30 x 4) + ($40 x 2) = $160 + $120 + $80 = $360 for that single workday.

To calculate overtime in California correctly, your time records need to reflect actual daily start and end times, including 30-minute or 60-minute lunch breaks and rest periods. A system that only tracks weekly totals will undercount overtime pay ca employees are entitled to. CA overtime rules also apply to overtime pay ca employers must pay for the seventh consecutive day, which is easy to miss without day-level records.

Overtime Rules in Other States

Most states follow the FLSA minimum. Calculating overtime pay in Texas and calculating overtime pay in Florida both use the standard federal formula: regular rate x 1.5 for all hours past 40 per workweek, no additional daily requirements. If you operate in either state, the basic overtime calculation applies without modification.

Several states impose stricter rules:

• Alaska: Daily overtime after 8 hours in a workday, same structure as California
• Nevada: Daily overtime after 8 hours for employees earning less than 1.5 times the state minimum wage
• Colorado: Daily overtime after 12 hours in a workday and for any shift that runs past 12 consecutive hours regardless of when it started
• Kentucky: Daily overtime after 10 hours and seventh-day premium pay rules

State rules change. Always verify current thresholds with the state labor agency before finalizing your payroll setup. This guide covers the general legal overtime framework as of 2025 and is not legal advice specific to your situation.

What Happens When Overtime Calculation Goes Wrong?

The FLSA makes overtime underpayment expensive. An employer who miscalculates overtime wages owes the full back wages plus an equal amount in liquidated damages, effectively doubling the cost of the error. A three-year statute of limitations applies when violations are willful, meaning the employer knew or showed reckless disregard for the legal overtime requirement.

The Department of Labor's Wage and Hour Division investigates employer-wide payroll practices, not just individual complaints. A single miscalculated overtime payment often reveals a systematic overtime deduction error replicated across all employees for years. Each underpayment week adds a matching liquidated damages amount.

Common overtime calculation mistakes that trigger back-wage claims:

• Excluding non-discretionary bonuses from the regular rate before applying the overtime multiplier
• Averaging hours across two-week pay periods instead of calculating per workweek
• Failing to count all hours worked, including pre-shift tasks and cleanup that exceeds 60 minutes
• Treating misclassified workers as exempt when they do not meet the duties or salary tests
• Calculating the overtime pay deduction incorrectly when an employee receives a mid-period bonus
• Using the wrong rate for tipped employees where tip credits apply

Employees can also file private lawsuits to recover an overtime payment directly without going through the government. A successful plaintiff recovers back wages, liquidated damages equal to the back wages owed, and attorneys' fees. Class-action overtime suits for payroll-wide errors are common and costly for employers who got the regular rate calculation wrong across a workforce.

How Time-Clock Software Reduces Overtime Calculation Errors

Calculating overtime manually gets error-prone fast. A restaurant with 25 employees across varying shifts, different hourly rates, and a weekly production bonus has hundreds of calculation points each pay period. One wrong regular rate, multiplied across 52 weeks, creates a liability that grows silently until a wage claim surfaces.

A time clock that captures actual punch-in and punch-out times removes the manual hour-counting step. Kloqk's time clock logs every punch automatically, organizes hours by workweek, and shows each employee's running total so you can see at a glance who is approaching 40 hours before overtime hits.

The timesheet export separates regular hours and overtime hours, already calculated against each employee's rate. That output feeds directly into payroll providers including Gusto, ADP, QuickBooks, and Paychex, removing the manual translation step that causes most overtime calculation errors. No more calculating timesheet data by hand at the end of the pay period when the records come from a punch clock.

To calculate overtime pay for a specific scenario right now, try Kloqk's overtime calculator. Enter the hourly rate and hours worked and the tool returns regular pay, overtime pay, and total gross pay broken down by period. No account required.

Overtime Pay and Taxes: What Employers and Employees Should Know

Overtime wages are fully taxable. The widespread claim that overtime is tax-free, or that overtime is taxed at a higher rate than regular pay, is not accurate. Overtime taxable income is ordinary earned income subject to the same federal and state income tax rates, Social Security, Medicare, and applicable state payroll taxes as regular wages. There is no basis in federal tax law for no taxes on overtime.

What creates the impression of higher taxing on overtime checks is withholding mechanics. When payroll software processes a check, it annualizes the paycheck amount to estimate the employee's full-year income and applies the appropriate bracket rate. A check that includes overtime pay looks larger, so the annualized income estimate rises and the marginal withholding on that check rises too. The employee's actual effective annual tax rate does not change because they worked extra hours one week. Taxed overtime pay is taxed the same as any other compensation.

For payroll deductions: all standard deductions apply to the full gross paycheck including overtime wages. Social Security, Medicare, federal income tax withholding, state income tax, and voluntary pre-tax deductions like 401(k) contributions all apply to total gross wages. There is no overtime deduction or exemption in federal payroll tax law that reduces the taxable amount of overtime pay.

When employees ask how to calculate overtime pay for taxes, the answer is to include overtime wages in total gross income for the year. The overtime taxable wages land on the W-2 along with all other compensation, with no separate line item. How to calculate how much overtime pay for taxes owed works the same as any earned income: apply the marginal bracket rate to total taxable income, with overtime wages included in that total. The calculation for how to calculate overtime premium pay for taxes is identical.

Frequently Asked Questions

Is overtime calculated per day or per week?

Under the FLSA, overtime is calculated per workweek, not per day. An employee who works 10 hours on Monday and leaves early the rest of the week does not earn overtime if the weekly total stays at or below 40 hours. California is the major exception: state law requires 1.5x pay for any hours past 8 in a single workday regardless of the weekly total, and 2x pay for hours past 12 in a day.

Does PTO count toward the 40-hour overtime threshold?

No, not under federal law. PTO, vacation, and sick hours are not counted as hours worked for FLSA overtime purposes. An employee who uses 8 hours of PTO on Monday and works 40 actual hours the rest of the week has worked 40 hours, not 48, and owes no FLSA overtime for that week. Some collective bargaining agreements or company policies treat PTO hours as hours worked, so check your specific arrangement.

How do you calculate overtime pay for salaried employees?

Salaried non-exempt employees are entitled to overtime. Divide the weekly salary by the number of hours the salary covers (usually 40) to find the regular hourly rate, then pay 1.5x that rate for all hours past 40. A salaried employee earning $700 per week for 40 hours has a regular rate of $17.50 per hour and an overtime rate of $26.25 per hour. If they work 45 hours, the overtime payment is $26.25 x 5 = $131.25 added to the $700 salary.

Is overtime taxed at a higher rate than regular pay?

No. Overtime wages are taxed at the same ordinary income rates as regular wages. Federal and state income tax, Social Security, and Medicare all apply to the full gross paycheck including overtime. A larger paycheck can push withholding higher because payroll software annualizes the check amount to estimate the bracket, but the employee's actual annual tax rate does not change because they worked extra hours one week.

What is the difference between the overtime rate and the overtime premium?

The overtime rate is the full pay per overtime hour: regular rate times 1.5. The overtime premium is just the extra half portion: regular rate times 0.5. The distinction matters for multi-rate employees using the weighted average method. When straight-time pay already covers all hours worked, you owe only the 0.5 premium on overtime hours, not the full 1.5x, to avoid counting the straight-time portion twice.