Balance Transfers Explained — A Step-by-Step Guide

Balance Transfers Explained — A Step-by-Step Guide

A balance transfer moves what you owe on one credit card onto another card, usually at a lower promotional rate for a set period. That's the whole idea, and it can genuinely save you money. But the version most people picture — shift the debt, pay it off interest-free, walk away clean — only works if you understand the fine print before you apply, not after.

Here's what surprised us most while putting this together. On a Gem Visa, the six months interest-free on purchases of $250 or more is no longer automatic. Since 11 February 2026, you have to select the eligible purchase in the Latitude App or Service Centre within 30 days of it being posted. Miss that window, and you can't select the transaction at all. You don't get a reduced deal. You get nothing, and the prevailing rate of 29.49% p.a. applies.

That's the shape of the whole product category. The promotional rate is real, but it's conditional, time-limited, and almost always applies only to the transferred balance. New spending on the same card usually sits at the standard rate from day one.

How We Researched This Guide

We went to the providers' own pages rather than summarising anyone else's summary. We built this guide from the banks' published rates and terms, then re-checked every balance transfer offer on 23 September 2026 against the providers' own balance transfer pages and rate tables — Westpac, ASB, TSB, Kiwibank, ANZ, BNZ, the Co-operative Bank and SBS.

That gave us the numbers used throughout this guide: Westpac's 5.95% p.a. for the life of the balance, ASB, TSB and the Co-operative Bank at 0% for six months, Kiwibank at 1.99%, ANZ at 1.99% over two years, and BNZ's line that balance transfers are "currently unavailable until further notice". For the card costs, we went to the cards themselves — TSB’s comparison table, SBS's fees, Gem's published rates on gemfinance.co.nz, and Q Card's fees page.

Two things stood out. First, the gap between the cheapest and dearest cards on the same kind of spending is enormous — roughly 11.95% to 29.49% p.a., depending on which card you're holding. Second, the rules that decide whether a transfer actually saves you money aren't the headline rate. They're how each bank applies your repayments and whether it keeps your interest-free days, and both of those differ by bank.

The legal framework is set out in full on legislation.govt.nz under the Credit Contracts and Consumer Finance Act 2003, which requires lenders to assess affordability and disclose every rate and fee before you sign.

ValueHub's Trusted Providers

We've researched the providers below — here are our picks for this category.

The Quick Summary (60-Second Version)

If you only read one part of this guide, read this bit.

• Six banks are running a balance transfer offer right now: Westpac at 5.95% for the life of the balance; ASB, TSB, and the Co-operative Bank at 0% for six months; and Kiwibank and ANZ at 1.99%. BNZ has withdrawn its offer until further notice.
• A balance transfer shifts existing card debt to a new card at a promotional rate for a fixed period — the period ends on a date, not when your balance hits zero.
• The promotional rate normally applies only to the transferred balance. New purchases usually sit at the standard rate immediately.
• An annual fee still applies during the promotional period, so a "free" transfer isn't free.
• Check which way the bank applies your payments. ASB, TSB, Westpac and the Co-operative Bank clear your purchases before the transfer. ANZ and Kiwibank clear the transfer first.
• ANZ, TSB, Kiwibank and the Co-operative Bank also take away your interest-free days on new purchases while a transfer is running. ASB and Westpac keep them.
• Work out the monthly payment before you apply: divide the balance by the months in the promo. If that number isn't affordable, the transfer isn't either.
• Pay more than the minimum. On a Gem Visa, the minimum is 3% of the outstanding monthly balance or $20, and the terms state plainly that paying only the minimum won't clear the purchase within the promotional period.
• Checking your own credit file doesn't affect it — Equifax, Centrix and Illion all let you request your report.

Balance transfer offers available now.

This is the part most guides skip. Here is what each provider was actually offering on 23 September 2026, taken from its own balance transfer page and rate schedule.

Westpac's offer is the only one that doesn't expire. At 5.95% p.a. for the life of the balance, it costs more than a 0% deal over the first six months, but it never reverts to a card rate in the high teens or twenties — which is worth real money if you can't clear the balance quickly. Every other offer ends on a date, and whatever is left moves to the card's standard purchase rate.

Three providers aren't in the market at all. BNZ states plainly on its support pages that balance transfers are "currently unavailable until further notice". American Express publishes no balance transfer offer on any of its New Zealand card pages — the only mentions of balance transfers are exclusions from its rewards and introductory offers. SBS Bank's Visa is a solid card with no annual fee, but it publishes no balance transfer rate, so you'd have to ask at the time.

The limits matter as much as the rate.

Two caps decide how much you can actually move. The first is a percentage of your credit limit: Westpac and ANZ cap the transfer at 95%, ASB and TSB at 90%, and the Co-operative Bank at 80%. Kiwibank takes a different approach — the transfer simply can't exceed the credit limit you're applying for.

The second is a flat dollar cap, and two banks set it at $20,000 per transfer: ASB, which also limits you to two transfers in a calendar year, and TSB. If you're consolidating several cards, that's a genuine constraint rather than a footnote.

Minimums, by contrast, are small. ANZ and the Co-operative Bank ask for at least $100, and Kiwibank at least $200. TSB has no minimum transfer amount, and ASB and Westpac don't publish one.

You can't move a balance between two cards at the same bank.

Every offer we checked requires the debt to come from a different provider. Westpac states it outright — you can't transfer a balance from a Westpac card or loan. ANZ's offer applies to non-ANZ cards, and Kiwibank's to non-Kiwibank cards. If both of your cards are with the same bank, this route is closed, and you'd need to look at a personal loan instead.

Store cards count too.

A common misconception is that you can only move credit card balances. In fact, most of these offers accept store card debt as well. ASB says it transfers balances from another bank's credit card or store card, Kiwibank says the same, and the Co-operative Bank describes its offer as covering balances transferred from another credit or store card. ANZ's wording is "your non-ANZ credit or store card".

Some go further. ANZ also accepts balances from GE CreditLine (Gem), and Kiwibank publishes a list of the finance companies it will transfer from. Westpac casts the widest net, accepting balances from store cards, hire purchase, and personal loans held with another financial provider.

What Actually Happens, Step by Step

Before you apply

Get the real number first. Add up every card balance you want to move, then read your last few statements to check whether any of that debt is a cash advance or a store card purchase. Cash advances are treated differently by every issuer we looked at, and they're excluded from promotional rates. Gem charges 29.95% p.a. on cash advances against 29.49% p.a. standard, plus a $2 fee, and Q Card charges 29.50% p.a. against 28.95% p.a.

Then pull your credit report. New Zealand has three reporting agencies — Equifax, Centrix and Illion — and checking your own file doesn't affect it. Lenders look at your repayment history, any defaults, how many enquiries you've generated, how many active accounts you're running, and how long you've had credit.

Choosing the card

The promotional rate is the headline, but the annual fee is what you'll actually pay. TSB's Low Rate Mastercard carries a $20 annual fee, and the Platinum version is $90. SBS Visa is $0. ANZ's Airpoints Visa is $65 p.a., charged $32.50 half-yearly, and the Platinum version is $150 p.a., charged $75 half-yearly. Gem Visa has a $55 one-off establishment fee plus $65 a year, charged $32.50 half-yearly. Q Card charges $50 annually, taken as $25 on opening and $25 every six months.

The Traps, and How to Sidestep Them

The promotional rate isn't the purchase rate.

This is what catches people. You transfer a balance at a low promotional rate, then keep using the card for groceries and petrol. Those new purchases sit at the standard rate from the day they're made. Standard purchase rates across the six banks offering a transfer right now run from 11.95% p.a. on TSB's Low Rate Mastercard to 20.95% p.a. on most rewards cards.

Then there's the question of which balance your repayments actually reduce — and this is where most guides, including earlier versions of this one, get it wrong. Banks genuinely differ, and the split isn't what people assume. Four of the six clear your purchases and cash advances first. Two do the opposite.

Neither arrangement is automatically better for you, but each one changes what happens to your balance. If your repayments go to the transfer first, the cheap debt disappears while the expensive debt sits there compounding. If they go to purchases first, the transfer stays put — so you can reach the end of the promotional period with the transferred balance barely touched, and it reverts to the standard rate.

Either way, the discipline is identical: stop using the new card for spending until the transferred balance is cleared. That single habit is worth more than any promotional rate on offer.

Some banks take away your interest-free days.

This is the trap almost nobody mentions, and it costs money in a way that's easy to miss entirely. Normally, if you pay your statement balance in full each month, you get up to 55 days interest-free on new purchases. Four of the six banks offer a transfer switch that turns off while the transfer is running.

ANZ says it directly: until you pay off your transferred balance in full, you won't get any interest-free days on new purchases. Kiwibank is just as clear — you won't qualify for any interest-free days on purchases while you are paying off your balance transfer.

The Co-operative Bank's wording is the same in substance: with a balance transfer you won't receive interest-free days on new purchases until it's fully paid off. And TSB puts it plainly: any purchases or cash advances you make during the balance transfer period will incur interest and will not be eligible for any interest-free period while the balance transfer is outstanding.

ASB and Westpac work differently. Westpac's terms say you won't be charged interest on purchases listed in your statement provided you pay the closing balance, excluding the balance transfer amount, by the pay-by date. ASB describes the same thing from the opposite direction: pay your balance in full apart from any balance transfers and Smart Rate purchases, and you won't be charged purchase interest.

The practical effect is significant. On four of the six offers, the moment you use the new card for groceries, you start paying interest on those purchases from the day you spend — no 55-day cushion, no grace period. It's the strongest argument in this guide for leaving the card in a drawer.

The clock doesn't stop.

The promotional period ends on a fixed date. If you transfer a balance with six months to run and you're paying the minimum, you'll still owe most of it when the rate reverts. Gem's own terms say this outright: paying only the minimum monthly repayment is not sufficient to repay the purchase within the promotional period. Q Card requires 3% of the monthly closing balance, or $10, whichever is greater, throughout an interest-free period.

Divide the balance by the number of months and treat that as your floor, not your target. If the number isn't comfortable, the transfer is too big.

Eligibility and affordability both matter

Under the Credit Contracts and Consumer Finance Act, lenders must assess whether the borrowing is affordable for you. Income and expenses matter as much as your credit score. TSB, for example, requires you to be 18 or over, a New Zealand citizen or resident visa holder, and earning at least $18,000 after tax a year. Minimum credit limits vary too — $500 on TSB's Low Rate card and ANZ's Airpoints Visa, but $8,000 on TSB's Platinum and ANZ's Airpoints Platinum.

Is a Personal Loan the Better Move?

Sometimes. A personal loan is a fixed sum repaid over a fixed term at a fixed rate. A credit card is a revolving limit with a rate that changes when the promotion ends. If you're consolidating a balance you can't clear in the promotional window, a loan removes the date-based cliff entirely.

ASB offers a single fixed rate of 13.90% p.a. on amounts over $2,000, with terms from six months to seven years, no processing fee and no early repayment charge. ANZ charges no application fee, no lump sum payment fee and no early repayment fee, on $3,000 to $50,000 over six months to seven years. BNZ lends $1,000 to $60,000 over three months to five years with one establishment fee and no early repayment charge.

Compare that to a card standard rate in the high teens or twenties. But a card costs nothing at all if you clear the statement balance in full each month. If you're the sort of person who clears the balance, you don't need a balance transfer.

Questions You Might Have

Does a balance transfer hurt my credit score?

Applying for a new card generates a credit enquiry, and lenders look at enquiries. Check your file first, then apply once to the card you actually want.

Can I transfer a personal loan or store card balance onto a credit card?

Store cards, yes — and more often than you'd expect. ASB, Kiwibank and the Co-operative Bank all say explicitly that they accept balances from store cards, and ANZ's offer is worded the same way. ANZ also accepts GE CreditLine (Gem) balances, and Kiwibank publishes a list of the finance companies it will transfer from.

Personal loans are a narrower case. Westpac accepts balances from a personal loan held with another financial provider, but most banks restrict their balance transfer offer to credit and store cards. Cash advances are narrower still— every issuer we checked excludes them from promotional rates.

What happens if I don't clear the balance before the promo ends?

The standard rate applies to whatever is left, and that rate is often in the high teens or twenties. On a Gem Visa, the prevailing rate after an interest-free term is 29.49% p.a. On a Kiwibank Zero Visa it's 12.90% p.a., and on an ASB Visa Light it's 13.50% p.a. — which is why the card you choose matters as much as the promotional rate you're offered.

Should I close the old card once the balance is transferred?

It depends on your spending habits. Closing it removes the temptation to run the balance back up, while keeping it open preserves the length of your credit history, which lenders do look at.

How much can I actually borrow on the new card?

Minimum credit limits range from $500 on entry-level cards to $8,000 on platinum products. That's the floor, not the ceiling — the actual limit depends on the affordability assessment.

What Matters Most

A balance transfer is a timing tool, not a debt solution. It buys you a window at a lower rate, and what you do inside that window determines whether it was worth it. The providers have priced this correctly: the promotional period is long enough to be useful and short enough that minimum payments won't get you there.

So do the arithmetic before you apply. Divide the balance by the number of months, add the annual fee spread across the same period, and compare it to what you're paying now. Check which way the bank applies your payments, and whether it keeps your interest-free days. If the saving is real and the monthly figure is affordable, go ahead. If the monthly figure is a stretch, the transfer will just move the problem to a different card with a deadline attached.

And whatever you do, keep new spending off the new card. That single discipline is worth more than any promotional rate on offer.