Irish Calculators
Work & pay

Pay Rise Calculator: New Pay and Percentage

Find the amount of a proposed pay rise or its percentage from two pay figures. Keep the pay period and hours consistent; the gross change is not the same as a take-home increase.

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Your numbers

€
%
€
Your figures stay on this device.

How the calculation works

A pay rise can be expressed as a new gross amount or as a percentage change from the previous amount. This tool switches between those two questions while keeping the old pay as the denominator for the percentage.

New pay = old pay × (1 + rise/100). Percentage change = (new pay − old pay) ÷ old pay × 100.

  1. Establish the old-pay reference

    The current amount supplies both the starting value for a rise and the denominator for an inferred percentage change. A zero starting amount cannot support that percentage comparison.

  2. Calculate the selected result

    New-pay mode multiplies old pay by one plus the percentage divided by one hundred. Percentage mode divides the difference between new and old pay by old pay.

  3. Check the cash change

    The breakdown shows the gross amount changed alongside the main result. Its sign distinguishes an increase from a reduction.

Worked example: Five per cent rise

Sample inputs demonstrate the method. They are not a forecast or product offer.

The first example increases €40,000 by 5%. Five percent of €40,000 is €2,000, so new gross pay is €42,000. The cash-change breakdown shows the same €2,000 increase.

Find
New pay from percentage
Current gross pay (€)
40000
Proposed rise (%)
5

Expected result

New gross pay
€42,000.00
Worked example: Ten per cent change

Sample inputs demonstrate the method. They are not a forecast or product offer.

Find
Percentage from new pay
Current gross pay (€)
40000
New gross pay (€)
44000

Expected result

Pay change
10%

Understanding your result

The percentage is relative to old pay, not the new amount. Reversing the comparison therefore does not generally produce the same percentage with the opposite sign.

A gross rise does not establish the change in money received after deductions. It also does not account for altered working hours, benefits or inflation.

Questions you might have

What does this pay rise calculator include?

Calculate a new gross salary from a percentage rise, or find the percentage change between your old and new salary.

Which assumptions should I check?

Use the same pay period and working hours for both amounts. A gross percentage increase is not the same as an increase in take-home pay.

Choosing the right inputs

Current gross pay
Enter a positive current gross amount. Its period and working hours must match the new amount or the percentage scenario.
Find
Choose new pay when a percentage change is known, or percentage when the new gross pay amount is known.
Proposed rise
A negative percentage represents a pay cut. The lower supported bound is negative 100%, which reduces the calculated new pay to zero.

Common mistakes to avoid

  • Do not compare a monthly old salary with an annual new salary.
  • If hours have changed, first decide whether you are comparing total gross pay or an hourly/full-time-equivalent rate.

Assumptions to check

  • Use the same pay period and working hours for both amounts. A gross percentage increase is not the same as an increase in take-home pay.

Sources and method

Read our calculation and testing approach.