Skip to content
PAYE Calculator NZ

Tax Refund Calculator NZ

Most refund calculators ask for two figures you do not have: your total gross pay and your total tax deducted for the year. This one starts from a single payslip and reconstructs the year from it. Rates are 2026–27.

You get a New Zealand tax refund when your employers withheld more PAYE across the year than your actual income required. Inland Revenue works this out automatically after 31 March and pays it into your bank account. The four causes are a wrong tax code, part-year work, a second job on the wrong code, and donation tax credits.

Estimate your refund

$
I received Working for Families, a main benefit, NZ Super or a Veteran's Pension
Income for the tax year
$65,000.00
PAYE withheld
$12,857.52
Tax actually due on that income
$12,338.00
Independent earner tax credit applied
− $520.00
Estimated refund
$519.52

More PAYE came out than the year required. Inland Revenue works this out itself after 31 March and pays it into your bank account. You do not need to claim it and you do not need to pay anyone to get it.

This compares PAYE withheld against income tax plus the ACC earners' levy on your total income, and applies the $520.00 independent earner tax credit where your income falls in the eligible range. It does not model donation tax credits, Working for Families squares-up, or income that had no PAYE deducted. Inland Revenue's own assessment is the figure that counts.

The four things that actually cause a refund

A refund is not luck and it is not a reward. It is arithmetic, and there are only four ways for the arithmetic to land in your favour. Each one has a dollar figure attached.

1. You were on the wrong tax code

The common version is sitting on code M when you were entitled to ME. ME delivers the $520 independent earner tax credit through your payslip at $10.00 a week. On M it is not delivered at all during the year, so the whole $520 arrives at the square-up instead. You are eligible when your total income from all sources is between $24,000 and $70,000 and you did not receive Working for Families, a main benefit, NZ Superannuation or a Veteran's Pension.

Worth up to $520.00

2. You only worked part of the year

This is the biggest one, and it needs nothing to have gone wrong. PAYE annualises each pay period, so payroll taxes every month as though you will earn at that rate for twelve of them. Work 5 months at $6,000 a month and each payday is taxed as if your year were $72,000. Total withheld: $6,283.30. Tax actually due on $30,000 of income: $4,683.00.

Worth $1,600.30 in this example

3. A second job on a secondary code set too high

Secondary codes are chosen on your total income from all sources, and people routinely pick one band too high. A $5,000 second job coded S deducts 19.25% when a total income inside the SB band only required 12.25%. That is 7% of the second job's income withheld for no reason.

Worth $350.00 in this example

4. You donated to an approved charity

Donations to approved donee organisations carry a tax credit of 33.33% of what you gave, up to your taxable income for the year. $500.00 of donations produces a $166.67 credit. Claimed through payroll giving you receive it in the pay period. Claimed after 31 March with your receipts, it arrives as a refund.

Worth $166.67 on $500.00 of donations

You might get a bill instead

Every page selling refund services stops before this part. The same assessment that produces refunds produces bills, and the causes are just as predictable:

  • Two jobs, both on a main tax code. Each employer gives you the low rate bands as though the other job did not exist, so you are under-taxed all year. Every job after your main one needs a secondary tax.
  • A secondary code one band too low. The mirror image of cause 3 above, and it produces a bill of the same size.
  • Income with no PAYE on it. Interest, dividends taxed at the wrong rate, or schedular payments where you elected a withholding rate below your real marginal rate.
  • Staying on ME after your income left the band. Above $70,000 the credit is nil, but the code kept giving it to you at $10.00 a week.

How Inland Revenue actually does this

Your employer files payday information every time it pays you, so Inland Revenue already knows what you earned and what was withheld before the year even ends. After 31 March it adds the year up, works out the tax genuinely due on that total, and compares the two figures. That comparison is the assessment.

  • It is automatic for most employees. If all your income had PAYE deducted, you do not file anything. The assessment arrives between late May and the end of July.
  • It is free. Inland Revenue charges nothing to issue an assessment or to pay a refund. A percentage-based fee buys you a slightly earlier arrival date and nothing else.
  • It needs your bank account number and your donation receipts. Those are the two things Inland Revenue cannot work out from payday information, and they are the two things worth logging in for.

Common questions

How much tax refund will I get in NZ?

It depends entirely on why you over-paid, which is why a single average figure is useless. Being on the wrong code is worth up to $520. Working part of a year can be worth $1,600 or more. A steady salary on the correct code usually produces nothing, because that is exactly what PAYE is built to do.

Do I have to apply for a tax refund in New Zealand?

No. Inland Revenue works it out automatically after 31 March from the payday information your employers already filed, and pays what you are owed into your bank account. There is nothing to claim.

Should I use a tax refund company?

Inland Revenue issues refunds automatically and free. An agent charges a percentage of money you were going to receive anyway, and cannot make the assessment produce a bigger number, because it is arithmetic on figures Inland Revenue already holds. You do not need to pay anyone a share of your own money.

When will my tax refund arrive?

Assessments issue between late May and the end of July, once employers have filed their final payday information for the year ended 31 March. A refund normally follows within a few weeks, provided Inland Revenue holds your bank account number. The full tax year calendar.

What if my assessment says I owe money instead?

Then it is a bill, due on 7 February the following year. The usual causes are two jobs both on a main code, a secondary tax chosen for the wrong band, or income that had no PAYE deducted at all.

Why do I get a refund when nothing went wrong?

Because PAYE annualises every pay period. A week where you earned more than usual is taxed as though you would earn at that rate for all 52 weeks. Uneven income therefore over-withholds by design, and the square-up returns the difference. Nothing went wrong.

Where these figures come from

2026–27 tax year (1 April 2026 – 31 March 2027). Last verified 30 July 2026.

Related