If you're thinking about buying a home in New Zealand in 2026, one of the first questions you're probably asking is: how much can I borrow?

The answer isn't quite as simple as your income or the size of your deposit.

Banks look at your overall financial position when assessing a mortgage application, including your income, existing debts, credit limits, regular expenses and how comfortably you could manage your mortgage repayments.

And with the lending environment changing, the amount you could borrow today may be different from what you were told six months ago.

Here's what NZ banks are looking at when you apply for a mortgage, and what you can do to put yourself in a stronger position.

What do banks look at when you apply for a mortgage in NZ?

When assessing a home loan application, banks want to understand two main things: whether you can afford the mortgage and how much risk is involved in lending to you.

They'll generally look at:

• Your income and how consistent it is
• Your deposit or available equity
• Existing personal loans and other debts
• Credit card limits, even if you don't owe anything on them
• Buy Now Pay Later accounts
• Regular household and living expenses
• The number of dependants you have
• Your credit history
• The property you're looking to buy

Banks also assess whether you could continue to afford your mortgage if interest rates or your circumstances changed.

This means the mortgage rate you see advertised isn't necessarily the rate a bank will use when working out how much you can borrow.

How much can I borrow for a mortgage in NZ?

There isn't one calculation that applies to everyone. Two people earning exactly the same amount could have very different borrowing capacities depending on their expenses, debts, deposit, dependants and overall financial position. Different banks can also assess the same borrower differently. That's one of the reasons an online mortgage calculator should only be treated as a starting point. To understand how much you could realistically borrow, your individual financial situation needs to be considered.

Can credit cards and Buy Now Pay Later affect how much I can borrow?

Yes. Credit cards, personal loans and Buy Now Pay Later facilities can affect a mortgage application. Something many people don't realise is that your credit card limit can matter even when you pay the balance off every month. A large unused credit limit still gives you access to debt, so a lender may take that potential liability into account when assessing your application. If you're planning to apply for a mortgage, it can be worth reviewing unused credit cards, Buy Now Pay Later accounts and other lending facilities beforehand. Don't automatically close accounts or make major changes purely to get a mortgage, though. Talk to a mortgage adviser first so you know what will actually help your application.

Does mortgage pre-approval expire in NZ?

Mortgage pre-approvals are generally only valid for a set period and can come with conditions. If you received pre-approval a few months ago but haven't found the right home yet, it's worth checking it again before making an offer. Your financial circumstances may not have changed, but a bank's lending criteria, interest rates or affordability calculations may have. At Buddy, we'd much rather find that out before you've fallen in love with a house.

What happens if one bank declines my mortgage application?

Being declined by one bank doesn't necessarily mean you can't get a mortgage. NZ lenders don't all assess borrowers in exactly the same way. Different banks can have different policies around income, expenses, deposits, existing debt and the types of properties they're willing to lend on. A mortgage adviser can look at your circumstances and help identify which lenders may be better suited to your application, rather than simply sending the same application everywhere. So if your current bank has said no, it may be worth getting another opinion before giving up on your plans.

Do first home buyers need a 20% deposit in NZ?

Not always. A 20% deposit can give first home buyers more lending options, but it isn't a universal requirement. Depending on your circumstances, there may be options available with a deposit of less than 20%. These can include low-deposit lending from banks and First Home Loans for eligible buyers. KiwiSaver may also be able to form part of your deposit if you meet the withdrawal requirements. Low-deposit lending has additional criteria and isn't suitable or available to everyone, so it's worth finding out what applies to your situation before assuming you need to keep saving until you reach 20%.

Is 2026 a good time to buy a first home?

There isn't one "right" time to buy a home. The better question is whether buying makes sense for your circumstances and whether you can comfortably afford the repayments. However, first home buyers may currently benefit from having more properties to choose from and less competition than during some of the hotter periods of the NZ property market. If you're considering buying within the next 6 to 12 months, finding out what you can borrow now can give you a much clearer idea of what needs to happen next. You may be closer to buying than you think. Or you might discover there are a few things worth sorting out first. Either way, knowing is better than guessing.

What if I already own a home and want to upgrade?

If you've been putting off moving to a bigger home because of the property market, it may be worth running the numbers again. When you're upgrading, the value of your existing property isn't the only number that matters. You also need to look at the difference between what you can sell your current home for and what you'll need to pay for your next one. If both properties have changed in value, the actual cost of making that jump can look quite different from what you might expect. A market with more listings can also give buyers more choice and potentially more negotiating power. That doesn't mean everyone should rush out and buy a bigger home. But if you've assumed upgrading isn't affordable without checking the numbers recently, it's worth another look.

How can I improve my chances of getting a mortgage?

If you're planning to buy a home, getting prepared before you start making offers can make the process much easier.

A good place to start is to:

• Review your existing debts and credit limits
• Understand where your money is going each month
• Avoid taking on unnecessary new debt
• Keep building your deposit
• Check your credit history
• Get your borrowing capacity assessed
• Speak to a mortgage adviser before making an offer

Most importantly, don't wait until you've found the perfect house to find out whether the finance works.

Should I speak to a mortgage adviser before looking for a house?

Yes. Ideally, speak to a mortgage adviser before you seriously start house hunting.

Knowing your borrowing position upfront gives you a realistic price range and can help identify any issues that need to be sorted before applying for finance.

At Buddy, we can help you understand:

• How much you could realistically borrow
• Which lenders may suit your circumstances
• Whether there are changes worth making before applying
• What deposit options may be available
• What your repayments could look like
• How to structure your home loan

Being approved to borrow a certain amount and being comfortable borrowing that amount aren't necessarily the same thing. We'll help you look at both.

Thinking about buying a home in the next 6 to 12 months?

You don't need to have found a house before talking to us. Whether you're buying your first home, upgrading to your next one or simply wondering what you could afford in today's market, we can run the numbers and help you understand your options. Knowing where you stand now means you'll be in a much stronger position when the right property comes along.

Talk to the Buddy team today and let's work out your next step.

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