What deposit do I need for a mortgage in New Zealand?

Most NZ lenders require a minimum 20% deposit for owner-occupied properties. Under the RBNZ's LVR restrictions, only a limited percentage of new lending can exceed 80% LTV. First-home buyers may qualify for deposits as low as 5-10% through Kainga Ora's First Home Loan scheme, subject to income and property price caps. For investment properties, a minimum 35% deposit is typically required.

How do fortnightly mortgage payments save money in NZ?

Fortnightly payments save money because you make 26 half-payments per year, which equals 13 full monthly payments instead of 12. That extra payment goes directly to reducing your principal balance. On a NZ$520,000 mortgage at 6.5% over 30 years, switching from monthly to fortnightly payments can save approximately NZ$95,000 in total interest and reduce the loan term by about 4 years.

What are current mortgage rates in New Zealand?

As of early 2026, NZ mortgage rates range from approximately 5.5% to 7.5% depending on the fixed-rate term and lender. One-year fixed rates are typically lower than longer terms. The four major banks (ANZ, ASB, BNZ, and Westpac) dominate the market, but smaller banks like Kiwibank and non-bank lenders may offer competitive alternatives.

What is a revolving credit mortgage in New Zealand?

A revolving credit facility is a flexible mortgage product where your home loan operates like a large overdraft. Your salary is deposited directly into the mortgage account, reducing the balance and the interest charged daily. You can withdraw funds up to your approved credit limit as needed. On a NZ$300,000 facility, depositing a NZ$7,000 monthly salary can save thousands in interest annually because the balance is lower for most of the month.

How much can I borrow for a home loan in New Zealand?

NZ lenders assess borrowing capacity using the CCCFA (Credit Contracts and Consumer Finance Act) affordability rules. Generally, banks lend up to 6 times household income, subject to passing a stress test at rates 2-3% above current rates. A household earning NZ$120,000 might borrow NZ$600,000-NZ$720,000 depending on existing debts, living expenses, and the number of dependants.

Is mortgage interest tax deductible in New Zealand?

For owner-occupied homes, mortgage interest is not tax deductible in New Zealand. For residential investment properties, interest deductibility is being phased back in under changes announced in 2024. From the 2025-26 tax year, investors can claim 80% of interest costs, increasing to 100% from 2026-27. Consult Inland Revenue NZ for current rules.

Mortgage Calculator New Zealand

Calculate your NZ mortgage repayments with fortnightly and monthly options.

Property Price (NZ$)

Deposit (NZ$)

Loan Term (Years)

Interest Rate (%)

Monthly Payment

Fortnightly Payment

Loan Amount

Total Interest

Total Cost

LTV Ratio

How New Zealand Home Loans Work

A New Zealand home loan (mortgage) is a secured loan where the property acts as collateral for the borrowed amount. The Reserve Bank of New Zealand (RBNZ) regulates lending through Loan-to-Value Ratio (LVR) restrictions, which limit how much banks can lend relative to a property's value. These restrictions were introduced in 2013 to promote financial stability in the housing market.

New Zealand's mortgage market is dominated by four major banks -- ANZ, ASB, BNZ, and Westpac -- which collectively hold approximately 85% of all residential mortgages. Kiwibank and several non-bank lenders provide alternative options. Unlike many countries, NZ mortgages commonly offer fortnightly payment schedules and revolving credit facilities, giving borrowers more flexibility. According to the RBNZ, total outstanding residential mortgage lending exceeded NZ$350 billion in 2025. You can use our amortization calculator to see the full repayment schedule.

How NZ Mortgage Repayments Are Calculated

New Zealand home loan repayments use the standard annuity formula, the same method applied by lenders globally. The formula calculates equal periodic payments that cover both interest and principal:

Monthly Payment = P x [r(1+r)^n] / [(1+r)^n - 1]

P = Principal (loan amount after deposit)
r = Monthly interest rate (annual rate / 12)
n = Total monthly payments (years x 12)

Worked example: A property priced at NZ$650,000 with a 20% deposit (NZ$130,000) gives a loan of NZ$520,000. At 6.5% over 30 years: monthly rate = 0.065/12 = 0.00542, payments = 360. Monthly repayment = NZ$520,000 x [0.00542 x 1.00542^360] / [1.00542^360 - 1] = approximately NZ$3,287. Total interest paid over 30 years: approximately NZ$663,200. Fortnightly payment = NZ$3,287 x 12 / 26 = NZ$1,517.

Key Terms You Should Know

LVR (Loan-to-Value Ratio) -- The percentage of the property value that is borrowed. RBNZ limits most owner-occupier lending to 80% LVR (20% deposit) and investment lending to 65% LVR (35% deposit).
Floating Rate -- A variable interest rate that can change at any time. Currently the most expensive option but offers full flexibility for extra repayments and early repayment without penalties.
Fixed Rate -- The rate is locked for a set period (6 months to 5 years). Break fees apply if you repay early or switch during the fixed term.
Revolving Credit -- A flexible facility where the mortgage operates like an overdraft. Your income reduces the balance daily, cutting interest costs.
Offset Mortgage -- Savings held in a linked account reduce the mortgage balance on which interest is calculated, without locking up the savings.
CCCFA -- The Credit Contracts and Consumer Finance Act, which governs responsible lending standards and requires banks to verify borrowers can afford their repayments.

NZ Fixed vs Floating Mortgage Rates Compared

Choosing between fixed and floating rates is a critical decision for NZ borrowers. Many Kiwis split their mortgage across multiple fixed terms to manage risk. Here is how the options compare:

Rate Type	Typical Rate (2026)	Key Feature
Floating	7.0% - 8.0%	Full flexibility, no break fees
6-Month Fixed	5.5% - 6.5%	Short-term certainty
1-Year Fixed	5.5% - 6.5%	Most popular term in NZ
2-Year Fixed	5.5% - 6.8%	Balance of certainty and cost
5-Year Fixed	6.0% - 7.5%	Maximum payment certainty

According to the RBNZ, the 1-year fixed rate is the most popular choice among NZ borrowers, with over 40% of new lending at this term. Many mortgage advisers recommend splitting the mortgage across 2-3 different fixed terms to diversify rate risk -- a strategy unique to the NZ market.

Practical Examples

Example 1: First-Home Buyer in Auckland. Tane earns NZ$85,000 and his partner earns NZ$75,000 (combined NZ$160,000). They want to buy a NZ$850,000 townhouse. With a 20% deposit (NZ$170,000) and a NZ$680,000 loan at 6.0% over 30 years, monthly repayments would be approximately NZ$4,078. They may qualify for the First Home Loan with as little as 5% deposit through Kainga Ora.

Example 2: Upgrading in Wellington. Sarah and James are selling their NZ$600,000 apartment (NZ$200,000 equity remaining after repaying NZ$400,000 mortgage) to buy a NZ$900,000 house. Using their NZ$200,000 equity as a deposit (22% LVR), they borrow NZ$700,000 at 5.8% over 25 years. Monthly repayments: approximately NZ$4,435. Fortnightly: NZ$2,047, saving around NZ$85,000 in interest over the loan term.

Example 3: Revolving Credit Strategy. Mike has a NZ$300,000 mortgage and earns NZ$7,500 per month after tax. He puts NZ$200,000 on a fixed rate and NZ$100,000 in a revolving credit facility. By depositing his full salary into the revolving account and only withdrawing for expenses throughout the month, his average revolving balance stays around NZ$95,000 instead of NZ$100,000, saving approximately NZ$350 per year in interest on that portion alone. Use our general mortgage calculator to compare different loan structures.

Tips to Get the Best NZ Mortgage Deal

Use a mortgage broker. NZ mortgage brokers are typically free to borrowers (paid by lenders) and can access rates from 20+ lenders, including deals not available directly. Over 60% of NZ mortgages are now originated through brokers.
Split your loan across terms. Instead of fixing your entire mortgage at one rate, split it across 1-year, 2-year, and 3-year terms. When each portion matures, you can renegotiate at current rates.
Choose fortnightly payments. This simple switch effectively makes one extra monthly payment per year, which can cut 4-5 years off a 30-year mortgage and save tens of thousands in interest.
Negotiate at renewal. When your fixed rate expires, contact your bank to negotiate rather than accepting the advertised rate. Banks often have discretion to offer 0.1%-0.3% below their published rates to retain customers.
Consider a shorter loan term. Moving from 30 to 25 years increases payments by roughly 10% but saves approximately 20% in total interest. Use this calculator to compare both scenarios.
Build KiwiSaver for your deposit. The KiwiSaver first-home withdrawal lets you access most of your balance for a first-home deposit, plus a First Home Grant of up to NZ$10,000 per person.

NZ Housing Market Context (2026)

According to the Reserve Bank of New Zealand, the national median house price sits at approximately NZ$800,000, with Auckland at around NZ$1,050,000 and Wellington at NZ$750,000. The RBNZ's Official Cash Rate (OCR) stood at approximately 4.25% in early 2026 after a series of cuts from the 2023 peak of 5.50%. Regional cities like Christchurch (median NZ$620,000) and Hamilton (median NZ$680,000) offer relatively more affordable options. First-home buyers account for roughly 25% of all property purchases in NZ.

Disclaimer: This calculator is for informational purposes only and does not constitute financial, tax, or legal advice. Always consult a qualified professional for decisions specific to your situation.