Borrowing Capacity
Loan size you can service from a target weekly repayment.
NZ$
%
years
Borrowing capacity
$537,420
Banks typically stress-test at +2–3% above this rate, so they may approve less.
About this calculator
Inverse of the mortgage repayment calculator. Pick your maximum monthly repayment and a rate, get the loan size you can service.
- Banks add a stress-test margin (commonly +2–3% over the contract rate) when assessing actual capacity.
- NZ DTI cap is 6× gross household income (owner-occupiers).
Frequently asked questions
Why does the bank approve less than this calculator says?
Banks assess at a stress-test rate ~2–3% above the actual rate, plus deduct living costs and existing debts.
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Calculator NZ provides general information only. For decisions with significant financial, medical or legal consequence please consult a qualified professional.