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Overtime Pay Calculator

Trabalho suplementar (Overtime) · art. 268.º

Enter your base salary and how many overtime hours you worked. The calculator applies the premiums from the Código do Trabalho (Labour Code, art. 268) and tells you what you are owed, to the cent. All in your browser.

By Elijah·UPDATED JULY 2026·4 MIN·OFFICIAL SOURCES
KEY FACTS
Hourly rate
(salary × 12) ÷ (52 × weekly hours)
Workday (up to 100h/yr)
1st hour +25%, rest +37.5%
Rest day or holiday
+50% per hour
Above 100h/year
Premiums doubled (50% / 75% / 100%)
Dia útilDescanso / feriado
VALOR DAS HORAS EXTRA (BRUTO)
·
Indique um salário e as horas extra.
Valor/hora·
1.ª hora (+25%)·
Horas seguintes (+37,5%)·

How this works

Overtime is paid at your hourly rate plus a premium that depends on the day and on your total hours in the year. This calculator derives the hourly rate from your monthly base salary and applies the percentages set in article 268 of the Código do Trabalho. It is a gross, estimated figure: no substitute for your payslip.

  1. 1
    We work out your hourly rate
    The hourly rate starts from your monthly base salary: multiply by 12 (the 12 salary months) and divide by 52 weeks times your weekly hours. At 40 hours/week, that is the same as dividing by 173.33 hours/month.
  2. 2
    We apply the right premium
    On a workday, the 1st hour is worth +25% and the following hours +37.5%. On a rest day (weekly or complementary) or public holiday, each hour is worth +50%. These are the figures in article 268 of the Código do Trabalho.
  3. 3
    We check the 100-hour threshold
    Above 100 overtime hours per year at the same employer, the premiums double: 50% and 75% on a workday, 100% on a rest day or holiday. The doubling applies only to the hours beyond the yearly 100: tick the box to price those hours.

Frequently asked

What percentages does the law set for overtime?
Under article 268 of the Código do Trabalho, up to 100 overtime hours a year: on a workday, +25% on the first hour or fraction and +37.5% on the following hours; on a rest day or holiday, +50% per hour. Above 100 hours/year, the premiums double to 50% / 75% (workday) and 100% (rest day/holiday).
How is the value of one normal hour worked out?
The hourly rate is (monthly pay × 12) ÷ (52 × normal weekly working hours), the formula in article 271 of the Código do Trabalho. At 40 hours/week, that divides by 173.33 hours per month. Use base salary, without allowances.
Does the subsídio de refeição (meal allowance) count?
No. The hourly rate is based on base pay (plus seniority bonuses, if any). The subsídio de refeição, subsídio de férias and subsídio de Natal are left out of the formula. This calculator uses only the base salary you enter.
Is overtime subject to IRS and Segurança Social?
Yes. The figure this tool shows is gross. IRS (income tax) and the 11% Segurança Social deduction apply, as with the rest of your pay. There are reduced-IRS rules for part of overtime pay: check your case with the AT or your accountant.
Can my employer give time off instead of money?
Compensatory rest can apply in certain conditions set by law or by collective bargaining agreement. The exact rules depend on your sector. For your case, check the applicable collective agreement or contact the labour authority (ACT).
OFFICIAL SOURCES
DISCLAIMER
Estimate based on the premium percentages in article 268 of the Código do Trabalho (Law 7/2009, as amended) and the hourly-rate formula in article 271. The figure shown is gross, before IRS and Segurança Social, and uses only the base salary you enter. Collective agreements may set different terms. Not legal or tax advice: when in doubt, contact the ACT or a lawyer.