Buying a home is the largest financial decision most New Zealanders will ever make. A mortgage — the loan that makes it possible — will likely follow you for 25 to 30 years, and the choices you make at the start will shape your financial life for decades.
This guide covers everything you need to know: how NZ home loans work, how much you can borrow, what deposit you need, the difference between fixed and floating rates, and how to navigate the application process. Think of it as your complete starting point before you speak to a bank or mortgage broker.
What Is a Mortgage?
A mortgage is a loan secured against a property. The lender — usually a bank, but sometimes a non-bank lender — provides the funds to purchase the home. You repay the loan over an agreed term, typically 25–30 years in New Zealand, with interest charged on the outstanding balance.
If you fail to make repayments, the lender has the legal right to sell the property to recover what is owed. That security is what allows banks to lend large sums at lower interest rates than, say, a personal loan or credit card.
Key mortgage terms
| Term | What it means |
|---|---|
| Principal | The amount you borrowed |
| Interest | The cost of borrowing, expressed as a % per year |
| Loan term | How long you have to repay — typically 25–30 years |
| LVR | Loan-to-value ratio — your loan as a % of the property value |
| Repayment | The combined principal and interest you pay each period |
| Equity | The portion of the property you own outright (value minus debt) |
How Home Loans Work in NZ
New Zealand mortgages are primarily table loans — each repayment is the same amount, but the split between interest and principal changes over time. Early in the loan, most of your repayment is interest. As the principal reduces, more of each payment chips away at the debt.
Example: A $700,000 loan at 6.00% over 30 years has a monthly repayment of roughly $4,196. In month one, around $3,500 is interest and $696 reduces principal. By year 20, the split has flipped.
This is why making even small additional repayments early in a mortgage saves a disproportionate amount of interest over the life of the loan.
Types of Mortgage in New Zealand
1. Fixed rate mortgage
The interest rate is locked in for a set term — typically 6 months, 1, 2, 3, or 5 years. Your repayments don’t change during the fixed period, regardless of what happens to market rates.
Best for: Budgeting certainty; households that cannot absorb a rate rise.
Trade-off: Break fees if you repay early or switch lenders during the fixed term. These can be substantial if rates have fallen since you fixed.
2. Floating (variable) rate mortgage
The interest rate moves with the market — typically tracking the RBNZ Official Cash Rate (OCR). Floating rates are usually higher than fixed rates as a starting point, but drop when the OCR falls.
Best for: Flexibility; borrowers expecting rates to fall; those planning to make large lump-sum repayments.
Trade-off: Repayments can rise sharply if the OCR increases.
3. Revolving credit (offset) mortgage
A revolving credit facility works like an overdraft on your home loan. Your salary is deposited directly into the facility, reducing your daily loan balance (and therefore your interest). You draw out spending money as needed.
Because interest is calculated daily, every dollar sitting in the account reduces what you pay. High-income earners who are disciplined with cash flow can save significant interest without changing their repayment behaviour.
Best for: Financially disciplined borrowers; small business owners with lumpy income.
Trade-off: Higher interest rate than fixed; easy to overspend if not monitored.
4. Split mortgage
Most New Zealand borrowers use a split structure — part fixed, part floating or revolving. This captures budgeting certainty on the bulk of the loan while retaining some flexibility for lump-sum repayments.
For more detail, see our guide on fixed vs floating mortgages in NZ.
How Much Can I Borrow?
Two main constraints determine your borrowing capacity in New Zealand:
Debt-to-income (DTI) ratio
From 1 July 2024, the RBNZ introduced DTI restrictions. Most lenders must limit new lending to:
- 6× gross income for owner-occupiers
- 7× gross income for investors
On a $120,000 household income, the maximum loan is $720,000 — before other affordability tests.
Serviceability test
Banks also stress-test your ability to repay at a rate typically 2–3% higher than the current rate. If the bank’s test rate is 8% and you’re borrowing at 6%, you must be able to service the loan at 8%. This constrains borrowing more than the headline rate suggests.
Other factors lenders assess
- Credit history (defaults, missed payments, credit card utilisation)
- Living expenses (the more you spend, the less you can borrow)
- Existing debts (student loan, car finance, credit cards)
- Employment stability (casual or contract work is scrutinised more closely)
- Number of dependants
Use our mortgage affordability calculator to estimate your position before approaching a lender.
Deposit Requirements and LVR Restrictions
Your deposit must be large enough to keep the loan-to-value ratio (LVR) within the RBNZ’s limits:
| Buyer type | Maximum LVR | Minimum deposit |
|---|---|---|
| Owner-occupier | 80% | 20% |
| First home buyer (First Home Loan) | 95% | 5% |
| Investor | 65% | 35% |
For most buyers, 20% is the target. A 20% deposit on a $750,000 Auckland property means $150,000 upfront — a meaningful barrier.
Low-deposit options for first home buyers:
Kāinga Ora’s First Home Loan allows eligible first home buyers to purchase with just a 5% deposit. The government underwrites the loan, reducing the lender’s risk. Income caps apply ($95,000 for individuals; $150,000 for two or more borrowers). For full eligibility details, see our guide to the First Home Loan NZ.
Using KiwiSaver as your deposit:
Most first home buyers use their KiwiSaver withdrawal for their house deposit. You can withdraw your full KiwiSaver balance (minus a $1,000 minimum) after three years of membership, provided you’ve never owned property before. To understand whether you’re eligible to withdraw KiwiSaver for a first home, check our dedicated guide.
For more on how deposits work and strategies to save one faster, see how much deposit do I need in NZ.
Current NZ Mortgage Rates
Mortgage rates in New Zealand are set by individual lenders and influenced primarily by the RBNZ’s Official Cash Rate (OCR) and wholesale funding costs. Rates change frequently.
As a general guide, New Zealand fixed rates in 2026 are broadly:
| Fixed term | Indicative rate range |
|---|---|
| 6 months | 5.50%–6.50% |
| 1 year | 5.00%–6.00% |
| 2 years | 5.00%–5.80% |
| 3 years | 5.20%–6.00% |
| 5 years | 5.50%–6.20% |
| Floating | 6.50%–7.50% |
Rates are indicative only and change regularly. Always compare directly with lenders or through a mortgage broker.
For the latest rates from all major banks, see our NZ mortgage rates guide. For a full breakdown of fixed vs floating trade-offs, see our fixed vs floating mortgage guide.
First Home Buyer Pathway
For first home buyers, the pathway typically involves three steps working together:
Step 1: Build your KiwiSaver balance
If you’ve been contributing to KiwiSaver for at least three years, you can withdraw nearly your entire balance (minus $1,000) to put towards your first home. See how much KiwiSaver you can withdraw for a first home for detailed calculations.
Step 2: Accumulate cash savings
The balance between your KiwiSaver withdrawal and your required deposit needs to come from savings. The saving for a house deposit guide covers high-interest accounts, term deposits, and strategies to accelerate savings.
Step 3: Apply for a mortgage (with or without First Home Loan)
If your deposit is less than 20%, the First Home Loan (backed by Kāinga Ora) allows eligible buyers to borrow with just 5% down. Income and price caps apply. See our First Home Buyer Guide NZ for the complete picture.
The Mortgage Application Process
1. Get your finances in order
Before approaching a lender, reduce high-interest debt, avoid applying for new credit, and save consistently for at least three months. Lenders scrutinise bank statements — regular savings and low discretionary spending improve your application.
2. Get pre-approval
Mortgage pre-approval (also called conditional approval) is a lender’s commitment in principle to lend you up to a specified amount, subject to final checks. Pre-approval is valid for 60–90 days.
Pre-approval lets you make offers on properties with confidence. Without it, vendors may not take your offer seriously in a competitive market.
For a step-by-step walkthrough, see our mortgage pre-approval guide.
3. Make an offer and go unconditional
Once you’ve found a property and had an offer accepted, your lender will conduct a valuation and final credit assessment. This is the “going unconditional” phase — the point at which both parties are legally committed to the transaction.
4. Settlement
On settlement day, your lender transfers funds to the vendor’s solicitor. Ownership transfers, and you collect the keys. From this date, your mortgage repayments begin.
For the full timeline, see the NZ house buying process step by step.
Mortgage Broker vs Going Direct to a Bank
Mortgage brokers work with multiple lenders and find you the most competitive deal. They are paid by the bank, not by you. A good broker will negotiate rates, handle paperwork, and advise on loan structure.
Going direct to your own bank is faster and familiar, but you’re limited to one lender’s products and may not get the best rate available.
For most first home buyers and anyone refinancing, speaking to a broker first is worthwhile. It costs nothing and gives you a wider view of the market.
What to ask a mortgage broker:
- Which lenders are you accredited with?
- What is your commission from the recommended lender?
- What are the break fees if I need to exit early?
- Can you advise on loan structure (split fixed/floating, revolving credit)?
How to Get the Best Mortgage Deal in NZ
Compare multiple lenders
Banks rarely offer their best rate upfront. Even if you stay with your current bank, use a competing quote to negotiate.
Consider the loan structure, not just the rate
The lowest rate isn’t always the best deal. A 1-year fixed at 5.2% with a $300 break fee may serve you better than a 3-year fixed at 5.5% if you plan to sell within 2 years.
Make extra repayments early
Every additional dollar paid early reduces principal faster, cutting the total interest over the loan term. Even $100/month extra on a 30-year $600,000 loan at 6% saves approximately $45,000 in interest and cuts 2.5 years off the term.
Review at rollover
When your fixed term expires, don’t automatically roll over on the bank’s default rate. This is the moment to compare the market, negotiate, or refinance. See our refinancing guide for when it makes sense to switch lenders.
Use a mortgage offset or revolving credit facility
If your income and discipline allow, a revolving credit facility can reduce your average daily balance, cutting interest without increasing repayments.
LVR Restrictions Explained
The Reserve Bank of New Zealand (RBNZ) sets loan-to-value ratio restrictions to manage housing market risk. These are not lending bans — they’re caps on how much of any lender’s new mortgage lending can exceed certain LVR thresholds.
In practice, they function as deposit requirements:
- Owner-occupiers generally need 20% or more
- Investors generally need 35% or more
- Some banks may accept less for strong applications (speed bumps, not hard stops)
For a detailed explanation of how LVR restrictions work and how they’ve changed in recent years, see our LVR restrictions NZ guide.
Mortgage Jargon Decoded
| Term | Plain English |
|---|---|
| OCR | Official Cash Rate — the RBNZ’s benchmark interest rate |
| Break fee | Penalty for exiting a fixed rate mortgage early |
| Conditional approval | Pre-approval subject to valuation and final checks |
| Caveat | A legal claim registered against a property |
| Conveyancing | The legal process of transferring property ownership |
| Solicitor/Lawyer | Required for property transactions in NZ |
| Settlement | The date funds transfer and ownership changes |
| Valuation | Independent assessment of the property’s market value |
| Cross-collateralisation | Using one property as security for multiple loans |
| Interest-only | Repayments cover only interest — principal doesn’t reduce |
Frequently Asked Questions
How much deposit do I need for a mortgage in NZ? Most buyers need at least 20% (80% LVR). First home buyers using the Kāinga Ora First Home Loan can qualify with as little as 5%, subject to income and property price caps.
What is a good interest rate for a mortgage in NZ? Rates change frequently. In 2026, competitive 1-year fixed rates have been in the 5.00%–6.00% range. Always compare across at least three lenders before committing.
Can I get a mortgage with bad credit in NZ? Banks have tight criteria. Non-bank lenders (such as Resimac, Pepper Money, NZHL) may approve applicants with minor credit issues, but at higher rates. Improving your credit score before applying — even by six months — is worth doing.
How long does a mortgage application take? Pre-approval typically takes 3–7 business days if your documents are ready. Full approval after a conditional offer is accepted usually takes 5–10 business days, allowing time for a bank valuation.
Can I pay off my mortgage early? Yes, but break fees may apply if you’re in a fixed term. During a floating period, there are no break fees. Making extra repayments on a floating portion while keeping a fixed portion is a common NZ strategy.
What happens to my mortgage if I sell my house? Your mortgage must be repaid from the sale proceeds at settlement. If the sale price is below the outstanding loan, you are personally liable for the shortfall — another reason LVR limits exist.
Should I use a mortgage broker? For most buyers, yes. Brokers access multiple lenders, negotiate rates, and cost you nothing. This is especially valuable for first home buyers or anyone with a complex financial situation.
What to Read Next
- How Home Loans Work in NZ — the mechanics explained
- Getting a Mortgage in NZ — step-by-step application guide
- First Home Buyer Guide NZ — complete pathway
- NZ Mortgage Rates 2026 — current rates from all major banks
- Fixed vs Floating Mortgage NZ — how to choose
- Using KiwiSaver for Your First Home — withdrawal guide
- LVR Restrictions NZ — deposit rules explained
- Refinancing Your Mortgage — when and how to switch