BNZ Home Loan Review.

Bank of New Zealand — NZ Mortgage Review (2026)

Bank of New Zealand is one of NZ's largest registered banks, part of National Australia Bank (NAB). For New Zealand borrowers, the lender's specialties include professional borrowers, investor lending, TotalMoney offset facility, self-employed mortgages. Finch is an independent NZ mortgage broker with a panel of 23 lenders: registered banks, specialist non-bank lenders and a credit union. We only recommend BNZ when its lending rules and pricing beat the alternatives for your situation. See all 23 lenders.

Who BNZ Suits Best

BNZ suits self-employed professionals, investors, and borrowers wanting market-leading offset loan features. It works best when your income, deposit and property type fit BNZ's current lending rules. If they don't, another lender on our panel may be cheaper or faster, so we compare options before recommending one.

BNZ — Strengths

• TotalMoney mortgage offset across up to 50 linked family or business accounts
• Pragmatic view on self-employed income with strong forward cashflow
• Competitive broker rate pricing and active cashback contributions
• Strong property investor appetite where serviceability stacks up

BNZ — Considerations

• Heavier document expectations than smaller non-bank funders
• Conservative servicing test rates in line with Reserve Bank rules
• Turnaround times can vary during high-volume application cycles

How BNZ Compares Across Our 23 Approved Lenders

No lender is best for everyone. Banks usually offer their lowest rates to borrowers with steady salary or wage income and a good deposit. Non-bank lenders such as Avanti Finance, Basecorp Finance and Pepper Money often help when your situation is less straightforward. Check current NZ mortgage rates, then book a free call and we'll compare your options across the whole panel.

The Rules NZ Lenders Work Within

In New Zealand, the Reserve Bank's loan-to-value (LVR) and debt-to-income (DTI) restrictions apply to registered banks. Non-bank lenders aren't bound by them, but every lender must follow the responsible lending rules in the Credit Contracts and Consumer Finance Act (CCCFA). Finch gives advice as an Authorised Body under the Financial Advice Provider licence held by Finsure New Zealand Limited (FSP1005389), and follows the Code of Professional Conduct for Financial Advice Services, overseen by the Financial Markets Authority. That means we only recommend BNZ when it suits your needs.

Documents BNZ Typically Requires

• 3 months payslips (PAYE) or latest financial statements / bank cashflows (self-employed)
• 3 months bank statements across active accounts and credit facilities
• KiwiSaver statement and confirmation of first-home eligibility (if applicable)
• NZ photo ID and proof of address for AML / CFT compliance
• Evidence of deposit funds, gifted equity, or existing property equity

Service Coverage Across New Zealand

Finch arranges BNZ lending for clients across New Zealand, including Auckland, Wellington, Christchurch, Hamilton, Tauranga, Dunedin, Palmerston North, Napier, Nelson and Queenstown. We handle the whole application, from first assessment to settlement.

Should You Go Direct, or Use an Independent Broker?

If you go to BNZ directly, you only see its own products and lending rules. Through Finch, you get a comparison across our panel of 23 lenders. For residential home loans our advice is free, because the lender pays us a commission when your loan settles. Read our NZ client case studies to see how we structure approvals.