Calculator

How much can I borrow?

Start from what you’d be comfortable paying and see the loan it carries.

  • Start from your payment
  • Share of your pay
  • Stress test at 7%
  • Send it to yourself

Start from your payment

Tell us what you’d be comfortable paying. We’ll show the loan it carries.

After tax and KiwiSaver, everyone on the loan together.

$

The most you'd put toward the mortgage after everyday living costs.

$

We calculate at this rate. Check today's rates with your bank or adviser and put in your own.

%

25 to 30 years is standard.

years

Where each year’s payments go

PrincipalInterest

$0$10k$20k$30k$40k151015202530

Year

You could borrow

$559,482

Paying $3,000 a month at 4.99% over 30 years.

Total interest
$520,518
Total repaid
$1,080,000
Debt-free by
Nov 2056
Send me this calculation

Your mortgage payment load

$3,000 is 33%of your take-home pay. That’s manageable.

Comfortable

to 30%

Manageable

30–40%

Stretched

40–50%

High pressure

50%+

If rates reach 7%

The same $559,482 would cost $3,722 a month, $722 more. That’s 41% of your take-home pay: stretched.

Comfortable

to 30%

Manageable

30–40%

Stretched

40–50%

High pressure

50%+

What the bands mean

Comfortable
a good buffer in your cashflow.
Manageable
usually workable, depends on your other costs.
Stretched
sensitive to rising rates or costs.
High pressure
little room for rate rises, income changes or surprises.

A guide, not a rule.The higher your income, the bigger the share that can go to a mortgage: food, power and basics don’t rise with pay. A bank may lend you more, but you don’t have to take it.

Indicative only. What you can actually borrow is confirmed by a lender after a full application.

Your five next steps

Before you make an offer.

  1. 1Set your own limit. Work out your budget and the repayment pressure you'd be comfortable with. Your number, not the lender's.
  2. 2Pin down your real deposit. Your actual KiwiSaver balance, and any family help confirmed in writing.
  3. 3Optimise your spending. Lenders assess what you actually spent in the last 90 days, not your budget.
  4. 4Check your card limits. Every $10,000 of limit costs about $57,000 of borrowing power, used or not. You don't have to cut them, but know what they cost.
  5. 5Talk it through with a specialist. A mortgage adviser or your bank. Structure, lender choice, and the options a calculator never sees.
Lena Bykova, Financial Adviser

Who you’d talk to

Lena Bykova

Financial Adviser with 20+ years’ experience across finance, business valuation, and investment analysis. About Lena

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Thirty minutes. No cost, no obligation.

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How much deposit do you actually need?

Twenty percent is the best place to buy from, but not the only one.

20%+

The standard

No low-equity margin and every lender open to you. The cheapest money you'll be offered.

10–20%

Common, and more expensive

Mostly first home buyers. Expect a low-equity margin and fewer lenders.

5–10%

Possible, with conditions

Some banks lend here directly, others through the First Home Loan (Kāinga Ora). A higher LVR, so a higher margin.

Two lenders will give you two different numbers.

Lender, rate and loan structure all change the answer.

What this calculator assumes

Common lending practice, not any one bank’s rules. Nothing here is guaranteed, and every lender applies its own.

  • The loan. What your chosen payment repays in full over the term, at the rate you enter, principal and interest.
  • Stress test. The same loan repriced at 7%, the level lenders commonly test at.
  • Payment bands. Your payment as a share of take-home pay: up to 30% comfortable, 30–40% manageable, 40–50% stretched, above 50% high pressure. A rule of thumb, not a lender's rule: the higher the income, the larger the share a household can usually carry.
  • Not a lender's limit. A bank also looks at your living costs, other debts and deposit. It may lend more or less than this.

This is a guide, not advice. The figures are indicative, based on general assumptions, and not an offer of finance. What you can actually borrow is confirmed by a lender after a full application.