Tax Code Picker NZ (IR330 helper)
Pick the right primary or secondary tax code for an IR330.
NZ$
Suggested tax code
M
Main job — primary tax code (M)
About this calculator
Every NZ employee fills out an IR330 declaring their tax code. Pick wrong and you over- or under-pay PAYE through the year. The picker walks through the main scenarios: main job vs secondary, total income tier, student loan, and the special CAE / EDW / ND codes.
- Main job: M (or M SL with student loan).
- Secondary job: SB / S / SH / ST / SA based on TOTAL annual income (across all jobs), not just the secondary one.
- Failing to file an IR330: ND code at 45% — fix it by submitting a new IR330 to your employer.
Frequently asked questions
Where does CAE apply?
Casual Agricultural Employees doing seasonal work (orchards, harvest crews etc.). Flat 17.5%.
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Calculator NZ provides general information only. For decisions with significant financial, medical or legal consequence please consult a qualified professional.