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Pro-Rata Salary Calculator Ireland

Calculate part-time, job-share, reduced-hours, four-day-week or shorter-working-year gross salary from a full-time Irish salary.


Pro-Rata Salary Calculator Ireland Ireland · Gross Estimate

Full-Time Role

Your Work Pattern

Pro-Rata Salary Estimate

Enter the full-time salary and both work patterns to calculate your reduced-hours or shorter-year gross salary.

How this pro-rata salary estimate is calculated

The calculator applies your weekly-hours and paid-weeks ratios to the quoted full-time annual salary.

Published by Irish Calculators. Rates, rules and assumptions are maintained against the official sources linked below.

  1. Your weekly hours are divided by the full-time weekly hours to calculate the hours or FTE percentage.
  2. Your paid weeks are divided by the full-time paid weeks to calculate any shorter-working-year adjustment.
  3. The two ratios are multiplied by the full-time annual salary to estimate pro-rata gross salary.
  4. Monthly, weekly and daily results are derived from that annual amount; daily pay uses your selected working days.

Source note: Standard pro-rata salary formula, with WRC annual-leave and part-time employment guidance used for context. This is an estimate only and not financial advice.

About This Pro-Rata Salary Calculator

Use this calculator for part-time hours, a three-day or four-day week, job sharing, reduced hours, term-time work or a shorter working year. It compares your paid hours and weeks with the full-time role.

Core formula. Pro-rata salary = full-time annual salary × (your weekly hours ÷ full-time weekly hours) × (your paid weeks ÷ full-time paid weeks).

Paid annual leave. Paid leave should not normally be treated as an unpaid week. The WRC annual-leave guidance explains that employees, including part-time workers, accrue paid annual leave under Irish working-time rules.

Gross result. The outputs are before PAYE, USC, PRSI, pension and other payroll deductions. After calculating the new annual amount, use the Net Salary Calculator for an estimated take-home figure.

Hourly-paid role? If you are paid a rate for every hour rather than a pro-rata share of a full-time salary, use the Hourly to Annual Salary Calculator.

This is a planning estimate. Your contract, collective agreement, public-service circular or payroll policy may use additional rules or rounding.

How This Calculator Works

1
Enter the quoted full-time annual salary, full-time weekly hours and full-time paid weeks.
2
Enter your reduced weekly hours, your paid weeks and the days you work each week.
3
The calculator applies the hours ratio and paid-weeks ratio to the full-time salary.
4
It shows your pro-rata annual, monthly, weekly and daily gross pay, FTE percentage and reduction from full-time salary.

Who This Calculator Is For

Employees moving from full-time to part-time or reduced hours.
People comparing a three-day or four-day week with a full-time salary.
Job-share workers checking their share of a full-time annual salary.
Term-time or shorter-working-year employees with genuinely unpaid weeks.

Frequently Asked Questions

How is pro-rata salary calculated?
Multiply full-time salary by your weekly-hours ratio and then by your paid-weeks ratio. The calculator keeps both adjustments visible.
Does a four-day week always mean 80% salary?
Only if the weekly hours are exactly 80% of the full-time hours and paid weeks are unchanged. Compressed full-time hours may still be 100% salary.
Should I subtract annual leave from paid weeks?
No. Paid annual leave is still paid time. Reduce paid weeks only for genuinely unpaid periods or a shorter paid working year.
What does FTE percentage mean?
It shows your weekly hours as a percentage of the full-time weekly hours. The overall work-pattern percentage also includes any paid-weeks adjustment.
Does the result include tax?
No. It is gross pay before PAYE, USC, PRSI, pension and other deductions. Use the Net Salary Calculator with the pro-rata annual result.
Can I use it for hourly-paid work?
Use the Hourly to Annual Salary Calculator when you are paid a rate for every hour rather than a share of a quoted full-time salary.

Related Guides

Salary Converter Guide Hub Choose between hourly, annual-to-hourly and pro-rata tools. Pro-Rata Salary and Part-Time Pay FTE, job sharing, reduced hours and shorter working years explained. Working Hours and Salary Conversion Paid weeks, annual hours and common Irish work patterns. Hourly Rate vs Salary Ireland Compare the whole employment package, not just the headline pay. Why Converter Results Differ from Take-Home Pay Move from gross pro-rata salary to a tax estimate. Hourly to Annual Salary Ireland Use an hourly rate when the role is not quoted as pro-rata salary.
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