Switching Mortgage Lenders NZ — How to Move Your Home Loan

Switching your mortgage to a new lender is more straightforward than many borrowers expect. The process is well-established, usually takes 3–6 weeks, and can result in a meaningfully lower rate, cashback, or better product structure. This guide walks through each step.

Is Switching Worth It?

Before starting the process, confirm the economics make sense. See When to Refinance Your Mortgage NZ for the full break-even framework.

Quick check:

Get a break fee quote from your current bank (if mid-fixed-term)
Calculate annual interest saving at the new rate vs current rate
Break-even = break fee ÷ annual saving × 12 months
If you’ll hold for longer than break-even: switching is profitable

If you’re switching at your fixed-term rollover date (within 30–60 days of expiry), break fees are near-zero — the economics are almost always favourable if a competitive rate is available.

Step 1: Research New Lenders and Rates

Compare current rates across all major NZ banks:

ANZ, ASB, BNZ, Westpac, Kiwibank
Ask each specifically about their current cashback offer for refinancers

Tip: Use a mortgage broker to do this comparison. Brokers have current knowledge of rates, policies, and cashback deals, and can run your application at multiple lenders simultaneously without multiple credit enquiries on your file.

Step 2: Get a Pre-Approval or Indicative Offer

Before formally committing to switch, get an indicative approval from the new lender. This gives you:

Confirmation they’ll lend to you at the rate and terms quoted
A signed letter confirming the cashback (if applicable)
Information on what valuation or documentation they require

Important: Until your application is formally approved by the new lender, don’t take any action with your existing bank. Keep your current mortgage running normally.

Step 3: Arrange a Property Valuation (If Required)

The new bank may require a registered valuation of your property, particularly if:

Your LVR is above 70% (the bank wants to confirm the property value)
The property is unusual (non-standard construction, rural, apartment below certain size)
A significant amount of time has passed since the original purchase

Valuation cost: $600–$900 for a standard property. Some banks pay for the valuation as part of a refinancing incentive — confirm this upfront.

Step 4: Instruct a Solicitor

You need a solicitor to:

Handle the title transfer (the new bank’s mortgage registered on the property’s title)
Discharge the existing bank’s mortgage from the title
Facilitate the settlement — the new loan funds pay out the existing loan

Cost: Legal fees for a refinance are typically $800–$1,500.

Most solicitors handle mortgage refinances routinely and can turn it around in 1–3 weeks once the new bank issues formal approval.

Some mortgage brokers work with law firms who offer preferred rates for refinance settlements. A broker can often facilitate an introduction.

Step 5: Confirm Your Fixed Term Strategy

When you switch, you’re choosing a new fixed term with the new lender. This is a good opportunity to reconsider your rate structure:

Do you want to split the mortgage (part fixed, part floating or revolving credit)?
What fixed term makes sense given current interest rate forecasts?
Do you want a revolving credit component?

See When to Fix Your Mortgage NZ and Split Mortgage NZ for guidance.

Step 6: Notify Your Existing Bank

Once the new lender has formally approved the loan and the solicitor is ready, notify your existing bank that you’re switching. They’ll:

Provide the discharge amount (total payout required to settle the existing mortgage)
Confirm any break fee amount
Arrange discharge of their mortgage from the property title

Discharge fee: Most NZ banks charge a $150–$350 mortgage discharge fee when you leave. This is normal and expected — factor it into your cost calculation.

Step 7: Settlement Day

On settlement day:

The new bank advances the mortgage funds to your solicitor
Your solicitor pays out the existing bank (discharge amount)
The existing bank’s mortgage is removed from the title
The new bank’s mortgage is registered
Any cashback from the new bank is paid to you (usually within a few weeks of settlement)

After settlement, set up your automatic repayments with the new bank. Confirm the repayment amount, frequency, and account details.

How Long Does Switching Take?

Step	Typical timeframe
Research and comparison	1–2 weeks
New bank application and approval	5–10 business days
Valuation (if required)	5–7 business days
Solicitor and title transfer	5–15 business days
Total typical timeline	3–6 weeks

Planning ahead is important. If your fixed term expires in 6 weeks and you want to switch lenders, start the process now.

Costs Summary

Cost	Typical amount
Break fee (mid-term)	Varies — could be $0 to $20,000+
Valuation fee	$0–$900 (sometimes paid by new bank)
Legal/solicitor fees	$800–$1,500
Discharge fee (existing bank)	$150–$350
Total out-of-pocket (at rollover, no break fee)	$950–$2,750

These costs are often offset by cashback offers from the new bank.

Common Mistakes When Switching

Waiting until the last minute: If you wait until your fixed term has already expired and your loan has gone to floating, you’ve missed the optimal window. Start researching 6–8 weeks before expiry.

Not negotiating with your current bank first: Your existing bank may match or beat the new offer to keep you. Give them the opportunity before committing to switch — but be prepared to follow through.

Ignoring the clawback: If the new bank offers cashback, understand the clawback terms before accepting. See Cashback Mortgages NZ.

Overestimating the rate saving: A 0.05% rate difference on $600,000 is only $300/year — barely worth switching for. Switching makes sense when the rate difference is 0.20%+ or the cashback is significant.