Student Loan Calculator
Estimate main-job repayments using the annual repayment threshold.
Your numbers,
in plain sight.
Enter your details and calculate to see your breakdown.
Understand the main-job repayment estimate
This specialised tool calculates a main-job annual repayment estimate even if the general loan checkbox is left unticked. It needs gross earnings, not the outstanding loan balance.
Worked example
For steady earnings of $60,000, the model is ($60,000 − $24,128) × 12% = $4,304.64 for the year. The model does not reduce that figure using your current balance.
How the result is built
Only the earnings above the annual main-job threshold enter this illustrative calculation. Payroll applies the relevant threshold to each pay period.
Before you use the number
A second job, repayment exemption, special deduction rate or overseas-based borrower can need different treatment. Annualising irregular earnings can differ from actual payroll deductions.
Does this tell me when the loan will be paid off?
No. A payoff estimate also needs the balance, deductions already made, residency and future earnings. This page shows a deduction scenario, not an account statement.
Official source ↗ · How we prepare and correct content · Model reviewed 26 September 2026. Examples are illustrative.
Useful estimates. Clear assumptions.
The 2026/27 year runs from 1 April 2026 to 31 March 2027. We assume a New Zealand tax resident, one main employment, regular earnings and no other income. Figures are annualised estimates, not a payroll filing. Select IETC only after confirming full-year eligibility. Employer KiwiSaver, ESCT, benefits, child support and special deduction rates are excluded.
See calculation rules & official sources ↗Your next useful calculation.
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