NZ Student Loan When You Move to Australia: Overseas Borrower Rules

Moving across the Tasman is one of the most common things a New Zealander with a student loan ever does. The moment you become “overseas-based,” the rules flip: the interest-free deal that applies in New Zealand stops, your repayments are set by your loan balance rather than your income, and IRD’s collection powers become much sharper. This guide explains what actually changes for the 2025-26 year and what to do before you fly.

You become an “overseas-based borrower”

You are an overseas-based borrower once you are away from New Zealand for 184 or more consecutive days (about six months). The trigger is connected to your physical presence, not your job or visa in Australia. There is a short-trip safe harbour: if you are in New Zealand for 32 days or more within any 184-day period — and never overseas for more than 152 days in a row — you stay NZ-based and your loan stays interest-free.

For most people genuinely relocating to Australia, none of those carve-outs apply, so the overseas-based rules kick in.

Interest is charged again

NZ-based borrowers pay no interest at all. Overseas-based borrowers do. Once you cross the six-month mark, interest is backdated to the day after you left New Zealand — so the clock effectively runs from your departure, not from month six.

The overseas-based interest rate is set each year on 1 April:

• 2025-26 tax year (1 April 2025 to 31 March 2026): 4.9% per year
• 2026-27 tax year (from 1 April 2026): 5.6% per year

Interest is calculated daily on your balance and added to your loan after 31 March each year. You may see it accruing in myIR before it is formally capitalised.

If you want to avoid interest, see whether you qualify to stay tax-resident and keep your loan interest-free — residency and student-loan status are assessed separately, so check both.

Fixed repayments based on your loan balance

This is the biggest mental shift. As a NZ-based borrower you repay 12% of income over the threshold. As an overseas-based borrower your obligation is a fixed annual amount set by which loan-balance band you fall into, regardless of what you earn in Australia — and the two instalments are not equal halves.

The bands, with the exact split due on each date:

Notice the split is one-third by 30 September, two-thirds by 31 March — not 50/50. An annual administration fee of $40 is also charged if your balance is $20 or more at 31 March (waived in the same year an establishment fee applies). Importantly, these minimums never go down as your balance shrinks — a borrower who pays down from $50,000 to $20,000 is still on the $3,000/year schedule for the $15,000–$30,000 band, not a smaller one.

One thing worth noticing: on a large balance, the fixed obligation may not even cover the interest. At the current 5.6% overseas-based rate, the $7,500 annual cap only breaks even with interest at roughly a $134,000 balance (7,500 ÷ 0.056) — above that, even a borrower who pays the minimum every year on time will watch their balance keep growing, because the flat-dollar repayment is capped while interest is not. Voluntary top-ups are the fix for anyone above that range.

Worked example: $35,000 balance, moving to Sydney

Aroha moves to Sydney on 1 May 2025 and stays. She passes the six-month mark on roughly 28 October 2025, so she is overseas-based, with interest backdated to 2 May 2025.

• Loan balance: $35,000 — this lands in the $30,000 to $45,000 band.
• Annual repayment obligation: $4,500, paid as $1,500 on 30 September and $3,000 on 31 March (the split is one-third/two-thirds, not equal halves).
• Interest for 2025-26: roughly $35,000 x 4.9% = about $1,715 (calculated daily on the reducing balance, so the real figure is a little lower).
• Admin fee: $40.

Her $4,500 comfortably exceeds the ~$1,715 of interest, so her balance still falls over the year — but only because her balance is below the level where the fixed amount stops covering interest. Use the Overseas Student Loan calculator to model your own band and interest.

The ~6-month interest-free grace window

Australia is close, and plenty of moves do not stick. The 183-day rule is effectively a grace window: for the first six months overseas your loan keeps its interest-free status, and the overseas-based rate only bites once you pass that point. If you return to New Zealand inside six months — or keep visiting often enough to satisfy the 32-days-in-184 test — you can avoid overseas-based interest entirely. People who move to Australia “to give it a go” should keep their travel dates handy in case the maths matters later.

Certain reasons for being overseas — qualifying full-time study, postgraduate study unavailable in New Zealand, or a government-funded scholarship — can let you apply to keep the loan interest-free for longer. These are applications to IRD, not automatic.

What default actually costs

Ignoring an overseas loan is where it gets expensive, and New Zealand’s enforcement is unusually firm:

• Interest keeps compounding on the unpaid balance at the overseas-based rate.
• Late payment interest and penalties are added on top of missed instalments, so the debt grows on two fronts.
• For serious and persistent default, IRD can apply to the court for an arrest warrant. In practice this means a defaulting borrower can be stopped at the New Zealand border when they try to fly home — a power IRD has used and publicised. This is the single most important reason not to let an Australian move turn into silent non-payment.

If you genuinely cannot meet the obligation, there is a legitimate alternative to defaulting: a temporary repayment suspension (repayment holiday). This lets you skip your overseas-based instalments for up to 12 months while you’re overseas — but interest keeps accruing on the balance throughout, so it only pauses the cash outflow, not the debt growth. It must be applied for in advance; it is not automatic and does not apply retroactively to missed payments.

Before you fly: a short checklist

• Tell IRD you are leaving and update your contact details in myIR so your status is set from the right date.
• Check your balance band — a small voluntary repayment before you go can drop you into a lower band and cut your fixed obligation.
• Diary the instalment dates, 30 September and 31 March, and set reminders from Australia.
• Decide on interest — if a return within six months is realistic, track your days; if you are staying, plan around the 4.9% (soon 5.6%) rate.
• Read the wider move guide. The Moving to Australia from NZ hub covers tax residency, superannuation and KiwiSaver alongside your loan.

Summary

• 184 or more consecutive days overseas makes you an overseas-based borrower; interest is backdated to the day after departure.
• The 2025-26 overseas interest rate was 4.9%; from 1 April 2026 it is 5.6%.
• Repayments are fixed by loan-balance band, from $1,500 up to $7,500 a year, split one-third on 30 September and two-thirds on 31 March, plus a $40 admin fee — and the minimum never drops as your balance falls.
• A roughly six-month grace window and the 32-days-in-184 rule can keep short-trip movers interest-free.
• Default adds compounding interest, late penalties and, for serious cases, a border-arrest power — so stay in contact with IRD.

Model your own obligation with the Overseas Student Loan calculator.

Sources

• Repaying my student loan when I live overseas — IRD
• Student loan interest and fees — IRD
• Can I keep my student loan interest-free overseas? — IRD
• I am going overseas — IRD
• Temporary repayment suspension for student loans — IRD