Is my NZ student loan interest-free?

Yes — for New Zealand-based borrowers, student loans are 100% interest-free. Interest only applies if you move overseas for more than six months, in which case the current rate is 3.5% per annum. Returning to New Zealand removes the interest charge going forward.

Can I make extra repayments to pay off my student loan faster?

Yes. Voluntary repayments can be made at any time through myIR, by direct credit, or by requesting an increased PAYE deduction code. There are no fees or penalties for extra payments. Because NZ-based loans are interest-free, every extra dollar directly reduces the balance and shortens your payoff timeline.

NZ Student Loan Repayment Estimator

Useful next calculations

Use the NZ Student Loan Repayment CalculatorContinue with the related new zealand tax question this result raises.
Use the NZ Paycheck CalculatorContinue with the related new zealand tax question this result raises.

When to use this calculator

Before comparing personal loan or credit offers on the same amount and term.
When you want to see total interest, not only the monthly payment.
When you are choosing between a shorter term and a lower monthly debit.
When you need a planning estimate before making a credit application.

A worked example

These are the example figures the calculator opens with.

A worked example
Input	Value
Loan Balance (NZ$)	NZ$30,000
Annual Income (NZ$)	NZ$55,000

For those figures the calculator returns:

Annual repayment: NZ$3,704.64
Weekly repayment: NZ$71.24
Years to pay off: 8.10yrs
Total repaid: NZ$30,000.00

Method & assumptions

This calculator estimates NZ student loan repayments using the 2026/27 IRD compulsory repayment threshold of $24,128 and the 12% repayment rate on income above that threshold. Because NZ-based student loans are completely interest-free, the loan balance divided by the annual compulsory repayment gives a straightforward payoff timeline. The calculator does not model voluntary extra repayments (which would shorten the timeline), income growth over time, or the interest that applies to overseas-based borrowers. For a more detailed projection that includes income growth and overseas interest, see the NZ Student Loan Calculator. This estimator is designed for a quick snapshot of current annual and weekly deductions based on today's income.

Common mistakes

Using an assumption that is not supported by a current local quote, bill, statement or official source.
Treating a generic estimate as a lender, provider, payroll or tax authority decision.
Mixing monthly and annual inputs without converting them consistently.
Testing only one scenario instead of checking how a cautious assumption changes the result.

What to do next

Run a second scenario with a cautious assumption so you can see the downside clearly.
Compare the result with the related calculators below before making a decision.
Check current local rules, eligibility and provider terms before applying or committing money.
Keep a record of the assumptions so you can update the estimate when a quote, bill or pay figure changes.

Questions people ask

IRD deducts 12 cents for every dollar you earn above the repayment threshold of $24,128 per year (2026/27). This is deducted automatically through PAYE for employees. For NZ-based borrowers, the loan is completely interest-free, so every dollar repaid reduces the principal.