What NZ banks look at when you apply for a mortgage
A calm, plain-language guide to how New Zealand banks assess a home loan, from income and living expenses to liabilities, credit history and your deposit.
Applying for your first mortgage can feel like sitting an exam you were never told the syllabus for. The good news: banks in New Zealand are fairly consistent about what they look at. Once you can see it the way they do, the whole thing gets a lot calmer.
Here is the short version, in plain language.
1. Your income
Banks want to know that money comes in reliably. For salaried work that usually means recent payslips and an employment letter. If you are self-employed, they will often look at one to two years of financial statements and tax returns. Steady is the word that matters most. Predictable income is easier to lend against than income that jumps around.
2. Your living expenses (the real ones)
This is the part people underestimate. Banks do not just take your word for what you spend. They look at your actual bank statements, usually the last three months, and add things up themselves.
So the daily coffees, the subscriptions you forgot about, the weekend takeaways: they all count. It is not about judgement, it is about working out how much is genuinely left over each month to put towards a loan. Tidy, well-categorised statements make their job easier and your application stronger.
3. Your liabilities
Every existing commitment reduces how much a bank will lend. That includes obvious things like car loans and student loans, but also two that catch people out:
- Credit card limits. Banks often count the whole limit as a potential debt, even if your balance is zero. A high limit you never use can quietly shrink your borrowing power.
- Buy Now Pay Later. Afterpay, Laybuy and similar are increasingly visible to lenders. Regular use can read as a sign that day-to-day spending is tight.
4. Your credit history
Banks check your credit record to see how you have handled credit in the past. Missed payments, defaults and lots of recent applications can all leave a mark. The fix is rarely complicated: pay things on time, and give any blemishes time to age.
5. Your deposit, and where it came from
How much deposit you have changes everything, including your interest rate. Banks also want to see that the deposit is genuinely yours, whether it is savings, KiwiSaver, or a documented gift from family. A clear, steady savings record is also strong evidence that you can manage repayments.
Two numbers worth knowing
These are general guidance, not advice, and the exact figures move over time:
- DTI (debt-to-income). Lending rules limit how much you can borrow relative to your income, with most owner-occupier lending sitting around six times gross income.
- Test rate. Banks check that you could still afford the loan if rates rose, often stress-testing at around 8 percent rather than today’s actual rate.
How Spendle helps you prepare
Spendle is built to help you walk into that meeting ready. It can pull together a readiness report from your real statements, flag the things a bank might pause on (a high card limit, regular BNPL, a few months of overspend), show your savings as evidence, give you an indicative DTI snapshot, and create a tidy read-only link you can share with your broker.
None of this is financial advice, and the figures are indicative. But knowing what the bank sees, before they see it, takes a lot of the nerves out of the process.