If your mortgage application has been declined, in our experience collaborating with borrowers across New Zealand, it is usually because the lender assessed the overall application as too risky — even if parts of it looked strong on their own.
This guide focuses specifically on how lenders assess mortgage applications in New Zealand, and the most common reasons an application may not meet lending criteria.
Was it your income? Your credit? Your deposit?
In most cases, it is not just one thing. We often see mortgage declines in New Zealand happen because multiple factors combine to make the application look like higher risk — even when parts of it look perfectly fine on paper.
For example, you might have a good income but too much existing debt. Or a solid deposit but a few recent missed payments. Or everything appears fine — except for something flagged in your bank statements or an issue with the property itself.
The key thing to understand is this: Lenders are not just asking whether you can afford the loan today. They are asking whether you can keep paying it long term — even if interest rates rise or your circumstances change.
In simple terms, a mortgage decline happens when a lender decides the loan does not meet its affordability, risk, or policy requirements. The goal is not to tell you what to do next, but to help you understand which parts of the application may have caused concern from the lender’s perspective.
While every application is different, most declines trace back to a small number of core issues.
If your mortgage was declined, it is usually due to one of the following reasons — or a combination of them. As you read through, you may start to recognise your own situation:
Many declines are not caused by just one of these. It is usually a combination that makes the overall application look too risky to the lender. In most cases, lenders decline applications when affordability is too tight, debt levels are too high, credit history shows recent issues, or the application falls outside their lending policy.
If one or two of these stood out to you, the sections below explain how lenders assess each of them.
Many clients are surprised to learn that banks do not assess your mortgage based on what interest rates are today. Instead, they apply a higher “test rate” — a buffer — to check whether you could still afford the loan if rates increase down the track.
Beyond that, they look closely at:
This means it is entirely possible to earn a good salary and still be declined, if your overall financial picture looks too tight once everything is weighed up together. This is why a mortgage can be declined even when it appears affordable based on current interest rates.
Most people we speak with recognise themselves in one of these situations.
This is one of the more common ones we see, and it often surprises people. The issue is usually not income — it is that debt levels are higher than the bank is comfortable with alongside a mortgage.
For example, you might have:
Even if you are managing those repayments comfortably right now, the bank’s stress test may show there is not enough headroom left to add a mortgage on top. This is one of the most common reasons borrowers are declined.
It may well have played a role.
Lenders look closely at patterns in your credit history, not just individual events. For example:
A single issue does not always cause a decline on its own. But a pattern of issues suggests ongoing financial stress — and that is what lenders react to. If you want to understand how credit history can influence mortgage approval, it helps to look at patterns over time, rather than focusing on a single issue.
Defaults stay on a credit file for 5 to 7 years under NZ credit reporting rules.
A borrower may have saved a deposit that looks strong on paper, but the bank does not assess the deposit by itself. It looks at the deposit in relation to the property being purchased, the loan purpose, the borrower’s overall position, and the lender’s risk settings.
This is why a deposit that may be enough for one property may not be enough for another. In some cases, the issue is not that the borrower has no deposit but more that the property type requires a larger deposit, stricter lending assessment, or a lender that is comfortable with that kind of security.
Apartments are one of the clearest examples. Floor size is often a major factor. Apartments of 50m² or more usually have the widest lending options. Apartments between 40m² and 49m² may still be acceptable to some lenders, especially if they are modern, well-located (an example in Auckland CBD), and desirable. Small apartments, particularly those under 40m², can be much harder to finance, and apartments under about 30–35m² may require a specialist or non bank lender.
Owner-occupied apartments may be assessed more flexibly than investment apartments. A 10% deposit can sometimes be possible for suitable owner-occupied apartments, and Kāinga Ora First Home Loan may be available where the property and borrower meet policy. Investment apartments are usually assessed more strictly and may require a larger deposit, often in the 20% to 35% range, depending on the property and lender.
Other property features can also affect how much deposit is needed or which lenders are available. These can include leasehold titles, hotel-style or serviced apartments, student accommodation, short-stay or Airbnb-heavy buildings, monolithic cladding, leaky building history, very small studios, high body corporate fees, tiny homes or relocatable homes, properties without a Code Compliance Certificate, rural or lifestyle properties, cross-lease titles with unresolved issues, mixed-use properties, and some high-density CBD buildings..
Income stability matters just as much as income level — sometimes more. A decline in this situation often happens when:
Banks want to see a reliable, proven income history. Current earnings alone are usually not enough to satisfy that requirement.
This one catches a lot of people off guard, but it is more common than most realise. Lenders do not just check your income and credit score — they review your day-to-day financial behaviour, including:
In our experience, this is the area that most often surprises borrowers.
Even with a strong income and clean credit file, these patterns can lead to a decline — because they suggest to the lender that managing a long-term mortgage commitment may be a stretch.
One of the bigger factors in any decline is how recent the issue is. Recent problems carry significantly more weight than older ones. For example:
Lenders are trying to determine whether the problem is something you are still dealing with — or something that is already behind you. That distinction, more often than not, is what shapes the outcome.
Before any application is reassessed, it is important to understand exactly which part of the application did not meet the lender’s criteria. Without that clarity, it is difficult to accurately identify what triggered the decline from the lender’s perspective.
If you want to understand the practical steps borrowers often consider after a mortgage decline — including what to avoid before applying again — visit our article on what to do if your home loan was declined
Mortgage declines in New Zealand are rarely down to one single issue.
They usually happen because several factors come together to make the overall application look too risky, whether that involves income, debt, credit history, deposit size, the property, or financial behaviour.
The starting point is always the same: understanding which of those factors applied to your situation.
Once those factors are understood, it becomes easier to see how the lender assessed the overall level of risk within the application.
In many cases, the underlying issue is not immediately obvious until the application is viewed through the lender’s assessment framework.
