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We're a self-employed couple who have run our business for three years and are buying a home, having owned one before. What matters most to us is keeping the total cost as low as possible. Which lenders would you recommend for our home loan, and why?
For a self-employed couple in New Zealand who have been in business for three years, have owned a home before, and want to minimise the total cost of their home loan, I would compare lenders on more than just the advertised interest rate.
Your three years of trading is a useful starting point for a self-employed application, but lenders differ in how they assess business income, add back expenses, and treat retained profits. Since you have owned a home before, you'll generally be assessed as existing homeowners rather than first-home buyers, although your deposit and whether you are selling another property will affect your options.
My recommendation is to compare a major bank with a competitive smaller bank and a mortgage adviser who can access multiple lenders. The cheapest option for you will depend on how each lender assesses your income and the total cost of the loan over time.
The lenders I would shortlist
These are the lenders I would approach first, based on current New Zealand market comparisons and your self-employed circumstances. This is a shortlist to obtain competing quotes from, not a claim that one lender will definitely offer you the lowest rate.
1. BNZ
Best starting point
Why I'd consider it: BNZ won Canstar's 2026 Bank of the Year Home Loans award. Its TotalMoney offset mortgage can also reduce interest if you keep substantial savings in linked accounts. Best home loans: Canstar's Home Loan AwardsCompare BNZ home loan rates
Best for you if: Your business generates reliable income and you hold savings or cash reserves that could offset your mortgage.
2. ASB
Why I'd consider it: ASB was among Canstar's 2026 Outstanding Value winners for residential fixed-rate home loans. It is worth requesting a competing fixed-rate offer, including any cash contribution. Best home loans: Canstar's Home Loan AwardsMortgage Cashback and Incentives
Best for you if: You want predictable repayments and can secure a competitive fixed rate without expensive conditions.
3. Westpac
Why I'd consider it: Westpac was another Canstar 2026 Outstanding Value winner for residential fixed-rate loans. Ask it to compete directly with BNZ and ASB on your actual loan amount. Best home loans: Canstar's Home Loan Awards
Best for you if: Its negotiated rate and upfront contribution produce a lower overall cost than the alternatives.
4. The Co-operative Bank
Why I'd consider it: It received Canstar's Outstanding Value awards for residential floating-rate and line-of-credit lending in 2026. These options may be useful if you want flexibility with business income and savings, although their costs depend on how you use the loan. Best home loans: Canstar's Home Loan Awards
Best for you if: Your income fluctuates throughout the year and you can benefit from flexible access to funds.
View The Co-operative Bank home loans
5. Resimac
Why I'd consider it: It is an alternative if a mainstream bank's standard income assessment doesn't reflect the strength of your business. Non-bank lenders may consider applications individually or accept alternative income documentation. However, rates and fees can be higher, so I would not choose one unless the numbers justify it. Getting a mortgage if you’re self-employedHow NZ banks assess self-employed income for a mortgage
Best for you if: Your accounts show lower taxable income than your business's underlying cash flow would suggest.
How to get the lowest total cost
I would compare written offers using the same loan amount, deposit, repayment term and fixed-rate period. Ask every lender for:
- The actual interest rate offered to you, including any low-equity premium.
- Cash contributions and fees, including establishment, legal and adviser costs where applicable.
- Repayment flexibility, including extra repayments, offset accounts and any early repayment charges.
- Self-employed income treatment, including which expenses may be added back and whether both years of accounts are needed.
A cashback offer isn't automatically the cheapest deal. For example, a 0.5 percentage-point rate difference on a $600,000 mortgage is initially about $3,000 per year in interest, before accounting for principal repayments and future rate changes. That can outweigh a one-off cash contribution. MoneyHub's comparison guide explains how to assess cashback against ongoing mortgage costs. Best New Zealand Mortgage Rates (Fixed & Floating)Mortgage Cashback and Incentives
For your circumstances, I would start with BNZ, ASB and Westpac for competing offers, then check The Co-operative Bank and use a mortgage adviser to investigate any lenders that may assess your business income more favourably.
Let me narrow this down to your situation
Three details would help me rank the lenders more accurately, especially for a couple running a business.
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Captured 11 October 2026