How Much Can I
Borrow in NZ?
Enter your income, living expenses, and any existing debt to get an estimate of your maximum borrowing capacity.
What Affects Borrowing Power?
Income
Base salary, bonuses, rental income, and self-employment income all factor in.
Expenses & Debts
Living costs, credit card limits (not just balances), and existing loan repayments reduce your capacity.
Credit History
A clean credit file ensures lenders offer you their best rates and maximum borrowing.
Deposit Size
A larger deposit means lower LVR, which unlocks better rates and higher loan amounts.
Want a Precise Figure?
Finch can give you a lender-specific borrowing limit in 24 hours — accurate to the dollar.
Get Pre-Approved Free →How NZ Banks Calculate Your Borrowing Power
When a New Zealand bank assesses how much they'll lend, they aren't just looking at your income — they're stress-testing whether you can service the loan if rates rose meaningfully. The exact formula varies between ANZ, ASB, BNZ, Westpac, Kiwibank, TSB, SBS, The Co-operative Bank, and Heartland, but every NZ lender follows the same core method: starting from your gross income, deducting tax, deducting living expenses (as scrutinised against your actual statements under CCCFA), deducting existing debt commitments, then dividing the remaining surplus across a stress-test rate over the loan term.
The NZ Bank Test Rate (Stress Rate)
Every NZ lender uses a "test rate" to size your loan — typically 7.0% to 9.0% in 2026, well above the actual carded rates of 5.5%–6.5%. This buffer protects against future rate rises and is the single biggest reason borrowers can borrow less than they expect. Each bank's test rate moves quarterly. Finch tracks the live test rates across every lender so you know which bank will lend you the most for your scenario before you apply. See live carded rates on our NZ rates page.
CCCFA Living-Expense Scrutiny
Under the Credit Contracts and Consumer Finance Act (CCCFA), NZ lenders itemise your last 90 days of bank-statement spending — restaurants, streaming subscriptions, gambling/TAB, Afterpay / Laybuy / BNPL, food delivery — and verify your declared living expenses match. If your declared figure is well below your statements, the bank will use the higher figure and you'll borrow less. Finch pre-audits your statements and helps you either re-base your declaration realistically or clean up discretionary spend ahead of application.
How Rental Income, Boarder Income & KiwiSaver Affect Borrowing
- Rental income — typically "shaded" by NZ banks at 70%–80%, meaning only that portion is counted toward serviceability.
- Boarder income — accepted by some lenders (Kiwibank, SBS) where evidenced; typically capped at 2 boarders and a maximum dollar figure per week.
- KiwiSaver — your balance is an asset, not income, but is the most common source of NZ first-home deposits. Withdrawal is permitted after 3 years of contributions.
- Working for Families / Best Start — accepted as income by most NZ lenders for borrowing-power calculations.
- Overtime, bonuses, commission — usually averaged across 2 years and partially shaded.
Why Different NZ Lenders Quote Different Borrowing Limits
It's normal for one NZ bank to offer $620,000 while another offers $780,000 to the same applicant. The differences come from each lender's scorecard, test rate, treatment of credit card limits, rental shading rate, and how they handle non-base income. Finch matches you to the lender most generous to your specific income profile — for free. See real-world borrowing outcomes in our NZ client case studies.
How to Boost Your NZ Borrowing Power Before Applying
- Close unused credit cards and reduce limits on cards you keep (banks count the limit, not the balance).
- Pay down hire purchase and BNPL balances before lodging.
- Clean up 90 days of statement spending — banks see everything you spend in that window.
- Strengthen savings discipline — regular deposits to a high-interest savings account look strong.
- Resolve any default or arrears on your credit file (see our credit score guide).