ChatGPT · National
Which bank has the best mortgage customer service for first-home owners who bought with about a 10% deposit?
For a first-home owner in New Zealand who bought with around a 10% deposit, I’d shortlist SBS Bank and The Co-operative Bank first for customer experience, and compare BNZ for mortgage-specific satisfaction. There isn’t one bank that is demonstrably best at every aspect of mortgage customer service, but the latest independent awards give us a useful starting point.
The important distinction is that you’re looking for a bank that treats you well after you’ve bought your home — answering questions, explaining your options, reviewing your interest rate and helping you build equity — not just one that was willing to approve your loan.
My shortlist
1. SBS Bank
Best first-home-buyer starting point
SBS won Canstar’s 2026 Bank of the Year – First Home Buyers award, which assesses home-loan value, products and support for first-home buyers. First Home Buyers Award 2026
Why consider it: It is my first bank to approach if you value first-home-buyer support alongside mortgage terms.
2. The Co-operative Bank
Strong historical customer-service results
It scored 77% customer satisfaction in Consumer NZ’s 2025 survey, the highest of the banks surveyed. That survey covered advice, trust, value and service, rather than mortgage customers alone. Smaller banks pack a punch: Consumer's best and worst banks
Why consider it: A particularly good candidate if feeling listened to and getting helpful advice are your priorities. Its 2026 survey results should also be considered before making a decision.
See The Co-operative Bank's website
3. BNZ
Strong mortgage-specific satisfaction result
BNZ won Canstar’s 2025 Most Satisfied Customers – Home Loans award, based on a survey of 1,518 home-loan customers across eight lenders. 2025 Most Satisfied Customers Award
Why consider it: It provides a useful comparison if you care specifically about how mortgage customers feel about their lender, rather than general banking satisfaction.
What matters most with a 10% deposit?
With a 10% deposit, your initial loan-to-value ratio (LVR) is around 90%. The Reserve Bank notes that low-deposit borrowers may face a higher interest rate or a low-equity premium until they build sufficient equity. Understanding loan-to-value restrictions - Reserve Bank of New Zealand
I'd compare these four things with each bank:
- Low-equity costs: Ask how much extra you'll pay and exactly when it can be removed.
- Personal support: Can you speak to a named mortgage adviser after settlement, or will you mainly use a call centre?
- Rate reviews: Will they proactively review your rate and discuss your options when your fixed term expires?
- Flexibility: Can you make extra repayments, split your loan across fixed terms or restructure repayments without unnecessary costs?
One caution: Consumer NZ's May 2026 survey found that no bank qualified for its overall People’s Choice Award. That reinforces why I wouldn't treat any single award as proof that one bank has the best service in every situation. Best and worst banks in NZ for 2026, ranked by customers
My recommendation
Start by comparing SBS Bank and The Co-operative Bank, then get a mortgage-specific quote from BNZ. I would choose based on the actual support offered and the total mortgage cost, not the advertised rate alone.
One question that would help me narrow this down: Have you already bought your first home and have a mortgage, or are you still choosing a bank before buying? The best choice can be quite different depending on whether you're looking for better ongoing service or arranging the original loan.
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Captured 11 October 2026