New Zealand Mortgage Calculator 2024
Calculate NZ home loan repayments, total interest, LVR, and maximum loan based on RBNZ debt-to-income (DTI) limits for 2024.
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How to use this calculator
- 1
Enter the property price and your deposit amount to calculate the loan amount and LVR.
- 2
Enter the interest rate — NZ variable mortgage rates in mid-2024 are typically 6.5–7.5%.
- 3
Select your repayment frequency — fortnightly payments reduce interest significantly over the loan term.
- 4
Enter your annual household income to check your Debt-to-Income (DTI) ratio against the RBNZ's 6x limit.
- 5
If LVR exceeds 80%, most NZ lenders require LMI or a higher deposit under RBNZ LVR restrictions.
Frequently asked questions
What is the RBNZ debt-to-income (DTI) limit in New Zealand?
From 1 July 2024, the Reserve Bank of New Zealand (RBNZ) introduced debt-to-income (DTI) ratio restrictions on banks. For owner-occupiers, no more than 20% of a bank's new lending can go to borrowers with a DTI above 6 (meaning total debt cannot exceed 6 times annual gross income). For investors, the cap is a DTI of 7. A household earning $120,000 per year could borrow up to $720,000 under the 6x DTI guideline. DTI restrictions apply at the bank portfolio level, so lenders retain some flexibility for individual borrowers who can demonstrate strong serviceability.
What are LVR restrictions in New Zealand?
The RBNZ imposes loan-to-value ratio (LVR) restrictions to limit high-risk lending. For owner-occupiers, banks must limit lending above 80% LVR (below 20% deposit) to no more than 20% of new lending. For investors, the limit is 35% deposit (65% LVR), meaning investment property loans above 65% LVR are restricted to 5% of new lending. These restrictions mean most buyers should aim for a 20% deposit for owner-occupier purchases. Some lenders offer welcome home loan products or other low-deposit options for first home buyers.
What are current mortgage rates in New Zealand?
New Zealand mortgage rates are set by individual banks and non-bank lenders based on their funding costs, which are influenced by the RBNZ Official Cash Rate (OCR). As of mid-2024, floating (variable) rates for owner-occupiers are typically 8.0–8.5%. Fixed rates for 1-year terms are approximately 6.8–7.5%, with 2-year fixed rates similar. Longer fixed terms (3–5 years) are sometimes lower. Interest rates have been high since 2022 as the RBNZ raised the OCR aggressively to combat inflation. Rate cuts were expected to begin from late 2024. Use comparison sites to find the latest rates.
How does fortnightly repayment save money in New Zealand?
Paying fortnightly instead of monthly results in 26 payments per year rather than 12. Since each fortnightly payment is half the monthly amount, this is equivalent to making 13 monthly payments per year. The extra repayment reduces the principal faster, meaning less interest is charged each period. On an $600,000 loan at 6.5% over 30 years, fortnightly repayments can save approximately $80,000–$100,000 in interest and reduce the loan term by around 4 years. Most NZ banks allow fortnightly or weekly repayments at no extra cost.
New Zealand Mortgage Calculator 2024 — Home Loan Repayments & DTI Check
Understanding NZ home loan repayments and costs
A New Zealand mortgage (home loan) is typically a principal and interest loan repaid over 25–30 years, though shorter terms are becoming more popular as borrowers look to pay off debt faster. Most New Zealanders opt for fixed interest rate periods of 1–3 years rather than floating rates, allowing repayment certainty. When a fixed term expires, the loan reverts to the lender's current rate — requiring borrowers to re-fix or float. The total cost of a home loan extends well beyond the purchase price: stamp duty does not exist in New Zealand (unlike Australia), but legal fees, LIM reports, building inspections, and valuation costs typically add $3,000–$6,000 to purchase costs. The interest paid over a 30-year mortgage on an $800,000 loan at 6.5% is approximately $1.1 million.
RBNZ DTI and LVR rules: what NZ borrowers need to know
New Zealand borrowers face two key Reserve Bank constraints on mortgage lending. First, LVR (loan-to-value ratio) restrictions require most owner-occupiers to have at least a 20% deposit — meaning a 80% LVR limit for the bulk of bank lending. Second, from July 2024, DTI (debt-to-income) ratio restrictions cap lending at 6x gross income for owner-occupiers in most cases. These macro-prudential tools are designed to prevent excessive household debt and financial stability risks in a market where property prices are high relative to incomes. First home buyers may access low-deposit options via the First Home Loan scheme (backed by Kāinga Ora), which allows 5% deposits for eligible applicants within income and purchase price caps.
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Results are estimates for informational purposes only and do not constitute professional financial, medical, legal, or technical advice. Read full disclaimer →