Overtime Calculator
Enter the monthly salary, standard working days and hours to get the hourly rate, then add overtime hours at the multiplier you pay.
Keeps wage registers consistent and gives workers a clear breakdown of the extra amount earned.
Overtime pay
- Normal hourly rate
- ₹144.23
- Overtime hourly rate
- ₹288.46
- Overtime pay
- ₹3,461.52
- Base monthly salary
- ₹30,000.00
- Total pay for the month
- ₹33,461.52
Formula
Hourly rate = Monthly salary ÷ (Working days × Hours per day)
Overtime pay = Hourly rate × Multiplier × Overtime hours
Section 59 of the Factories Act requires overtime at twice the ordinary rate of wages for covered workers.
Worked example
A ₹30,000 salary over 26 days of 8 hours gives ₹144.23 per hour. Twelve overtime hours at double rate add ₹3,461.52, taking the month to ₹33,461.52.
How to use this calculator
- 1Enter the regular hourly or monthly wage.
- 2Enter the overtime hours worked and the overtime multiplier that applies.
- 3Read the overtime pay and total earnings for the period.
When businesses use it
- Paying factory or workshop staff for hours beyond the normal shift.
- Costing a rush order that needs weekend work before you quote it.
- Checking an overtime claim against your wage register.
Overtime rules and wage register hygiene
Overtime pay in India is statutory, not discretionary. Section 59 of the Factories Act requires wages at twice the ordinary rate for hours beyond nine in a day or forty-eight in a week, and state Shops and Establishments Acts apply comparable rules to offices, shops and hotels with their own daily and weekly limits.
The ordinary hourly rate comes from monthly wages divided by the standard days and hours in a month, which is why the standard month you use matters. Twenty-six days of eight hours is the common convention for workers covered by the Factories Act. Whether allowances form part of the ordinary rate depends on the applicable rule, so keep the basis consistent across payroll periods and document it.
Overtime hours are capped as well as priced. Many states allow around fifty hours per quarter, with variations under state amendments, and inspectors examine the muster roll and overtime register together. Recording hours as they are worked and paying at the correct multiplier the same month is far cheaper than reconstructing a year of records during an inspection.
Payroll practices that keep you compliant
- Maintain the overtime register alongside attendance, not at month end from memory.
- Check your state's Shops and Establishments rules — they differ from the Factories Act.
- Show overtime as a separate line on the payslip rather than merging it into gross.
- Remember managerial and supervisory staff are generally outside statutory overtime.
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