New Zealand’s Central Bank Sticks With Mortgage Deposit Rules

borrower to end up owing close to what the home is worth. The RBNZ also kept debt-to-income limits, which restrict how many loans banks can write where the mortgage is large relative to a borrower’s income.

The decision fits the backdrop. House prices have been mostly flat for a while, which reduces the risk of a debt-fueled boom, but it can still weigh on household confidence and on homebuilding. By keeping both sets of limits in place, the RBNZ is signaling it would rather prevent risk from building quietly during the next upswing than scramble to cool things later.

Why should I care?

For you: The 20% deposit test is still the baseline.

Because these rules work like a quota, not an interest-rate add-on, getting approved isn’t just about whether mortgage rates fall. If a bank has already used up its limited allowance for low-deposit or high debt-to-income lending, it may tighten its checks or simply say no.

So first-home buyers without a 20% deposit, and investors without a 30% deposit, can still face a higher bar to borrow or to borrow as much. And if housing demand picks up later, lending limits may do more to cap how far prices can run than cheaper borrowing costs alone.