Pro-Rata Salary Calculator NZ 2026

Quick answer A part-time salary is the full-time salary times your share of full-time hours: $70,000 at 24 of 40 hours is $42,000, which is $808 a week at the same $33.65 hourly rate.

This calculator works out your pro-rata salary in New Zealand, turning a full-time salary into the pay you actually receive for part-time hours. Pro-rata simply means in proportion: if a role is advertised at a full-time salary but you work fewer hours, you are paid the same hourly rate for the share of full-time hours you do. Knowing the pro-rata figure matters whenever a job ad quotes a full-time equivalent (FTE) salary, when you move from full-time to part-time, when you return from parental leave on reduced hours, or when you are comparing two part-time offers fairly. You enter the full-time salary, the hours that count as full-time for that role, usually 37.5 or 40 a week, and the hours you will actually work. The calculator returns your pro-rata annual salary, then breaks it down to monthly, fortnightly and weekly pay, and shows the underlying hourly rate so you can check the part-time role pays the same per hour as the full-time version. Because your total earnings are lower than the full-time salary, your PAYE income tax and overall average tax rate will usually be lower too, though the calculator shows gross pay before tax. To see your take-home pay after PAYE, the ACC levy, KiwiSaver and any student loan, run the figure through the PAYE calculator. The result here is an estimate to help you plan and compare offers, not a payslip or a contract of employment.

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$
$42,000
pro-rata salary per year (gross)
Share of full-time60%
Hourly rate$33.65
Per month$3,500
Per fortnight$1,615
Per week$808

Gross pay before tax. For take-home pay after PAYE, ACC, KiwiSaver and student loan, use the PAYE calculator. An estimate for planning only.

How it works

Your share of full-time is your hours divided by the full-time hours for the role. The pro-rata annual salary is the full-time salary multiplied by that share. The hourly rate is the full-time salary divided by the full-time hours across the year (full-time hours times 52 weeks), and it does not change when you go part-time. The monthly, fortnightly and weekly figures are the annual pro-rata salary divided by 12, 26 and 52.

Worked example

A role pays $70,000 for a 40 hour week. You will work 24 hours. Your share of full-time is 24 divided by 40, which is 60 percent. Your pro-rata salary is $70,000 times 0.60, or $42,000 a year. The hourly rate is $70,000 divided by 2,080 hours, about $33.65 an hour, the same as the full-time role. That is $3,500 a month, $1,615 a fortnight and about $808 a week before tax.

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Frequently asked questions

How is a pro-rata salary calculated?

A pro-rata salary is the full-time salary multiplied by your share of full-time hours. If full-time is 40 hours a week and you work 24, you are paid 24/40, or 60 percent, of the full-time salary. The hourly rate stays the same; you are simply paid for fewer hours.

Does pro-rata change my hourly rate?

No. Pro-rata keeps the same hourly rate as the full-time role and scales the total pay to the hours you actually work. This calculator shows the hourly rate so you can confirm a part-time offer pays the same per hour as the full-time equivalent.

Is pro-rata pay taxed differently?

No. Pro-rata pay is taxed under the normal PAYE rules on your actual earnings. Because you earn less than the full-time salary, your total tax is lower and your average tax rate is usually lower too. Use the PAYE calculator to see take-home pay on your pro-rata salary.