ChatGPT · National
What's the best bank for taking over a joint mortgage on your own after a separation?
If you’re in New Zealand and want to take over a joint mortgage in your own name after a separation, the best bank is usually the one most willing to assess your income on its own, release your ex-partner from the loan, and let you keep the home without making the process unnecessarily expensive.
I wouldn’t automatically switch banks. Start by asking your existing lender whether it will let you take over the mortgage as the sole borrower. A competing bank may offer a better deal, but refinancing can involve legal costs, valuation fees and potentially break fees on a fixed-rate loan.
The key distinction is that taking over the mortgage is not just changing whose name is on the loan. The bank must agree that you can afford the debt independently, and your ex-partner generally needs to be formally released from their mortgage obligations.
Which NZ banks would I approach first?
I’d compare these four, starting with your existing lender. I can’t verify that one bank is consistently the easiest for separation-related mortgage transfers, because approval depends heavily on your finances and the bank’s lending assessment.
- ANZ New Zealand
A sensible first call if your current mortgage is with ANZ. Ask about restructuring the loan into your sole name, its affordability assessment and any costs associated with changing the lending. ANZ offers home-loan restructuring support. Manage your home loan
- ASB
Worth comparing if you want a fresh assessment or already bank with ASB. It has specific separation and divorce guidance, which can help you organise the wider financial changes. Managing finances through separation or divorce
- BNZ
Worth including in a competitive comparison, particularly if your current bank won’t approve the loan on your income alone. Ask whether it can refinance the existing balance and what equity and affordability requirements would apply.
- Westpac New Zealand
Include Westpac in your comparison if another lender offers a better overall deal. Have it assess the proposed sole-borrower arrangement before committing to a refinance.
What matters most for getting approved?
The bank will generally want to understand:
- Your income: whether your salary or other reliable income can cover the mortgage and normal living expenses.
- Your remaining mortgage: the amount you owe and the repayments at the applicable interest rate.
- Your equity: the property’s current value compared with the outstanding loan.
- Your other commitments: credit cards, personal loans, dependants, childcare and any child support payments.
- The separation settlement: whether you need to pay your ex-partner for their share of the home.
If you cannot afford the existing loan by yourself, a longer loan term or a different structure may help with repayments, but it won't necessarily make the application acceptable to the bank.
Importantly, the Banking Ombudsman explains that both borrowers can remain liable for the full joint loan even after separating. Your ex-partner is not automatically released just because you make all the repayments. Relationship breakdowns and banking
The approach I recommend
- Ask your current bank to assess a transfer to sole borrowing.
- Speak to an independent mortgage adviser to compare options with other lenders.
- Get a property lawyer to help with the ownership transfer and separation agreement. In New Zealand, a relationship-property agreement generally requires independent legal advice for both parties. Separating from your spouse or partnerDivide relationship property
- Don't assume the mortgage or property transfer is complete until the lender has formally approved the arrangements and the legal work is completed.
I can narrow this down to the best option for your circumstances
The most important factor is whether you can comfortably service the mortgage on your own. If you share a few approximate figures, I can help you work out which route is most realistic.
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Captured 11 October 2026