Home Loans NZ: A Complete 2026 Guide to Mortgages in New Zealand

Getting a mortgage is one of the biggest financial decisions most Kiwis make. This guide explains how home loans actually work in New Zealand — the loan types, the Reserve Bank’s lending rules, how much deposit you need, fixed versus floating, and what banks assess. It’s general information, not financial advice. To model repayments, use our home loan calculator; for the rate environment, see our NZ interest rates guide.

How a mortgage works

A mortgage is a loan secured against property — you borrow from a lender (usually one of the big four banks, ANZ, BNZ, Westpac or ASB, or a non-bank lender) and the property is the collateral. Miss enough repayments and the lender can sell it to recover what’s owed. In NZ, mortgages are registered on the title through Land Information New Zealand, and a solicitor handles settlement. Most run for 25–30 years, and your repayments cover principal (what you borrowed) plus interest — in the early years of a table mortgage, most of each payment is interest, tipping toward principal over time.

The true cost — beyond the interest rate

Cost	Typical range	Notes
Establishment fee	$0 – $500	Some banks waive it for new customers
Valuation	$500 – $1,000+	Often required, varies by property
Legal / solicitor	$1,500 – $3,000	Conveyancing plus mortgage registration
LIM report	$200 – $400	From the council — highly recommended
Building inspection	$500 – $1,000	Essential for older homes
Break fee (refixing early)	Varies widely	Can be thousands on a large loan
Cashback	A credit of a few thousand	Usually clawed back if you leave within 2–4 years

Ranges are indicative and change. The cheapest rate isn’t always the best deal — flexibility, offset features and extra-repayment ability can be worth more than a fraction of a percent.

The market in 2026

The rate environment has shifted. The OCR fell sharply through 2024 and 2025, bringing mortgage rates down — but it bottomed in late 2025 and the Reserve Bank has since begun raising it again in 2026, so the direction has turned upward (our interest rates guide covers where things sit). The property market varies by region and cycle, and longer days-to-sell in some markets have given buyers more room for due diligence and negotiation than during the frenzies of recent years. For live rates across lenders, check interest.co.nz or your bank directly, as they move frequently.

Fixed rates lock your rate for a term (typically six months to five years), giving certainty for budgeting — but making large lump-sum repayments or breaking early usually triggers a break fee, which can be substantial. Floating rates move with the market, allowing unlimited extra repayments and penalty-free refinancing, but the headline rate is usually higher than the best fixed specials. Many borrowers park on floating short-term while deciding their next fixed term, or split their loan across both. In a rising-rate environment the trade-offs shift, so weigh how much certainty you want against your position.

The Reserve Bank’s lending rules

Two macroprudential tools shape how much you can borrow.

The key correction on the numbers: from 1 December 2025 the Reserve Bank eased its LVR “speed limits” — banks can now allocate up to 25% of owner-occupier lending to borrowers with under a 20% deposit, and up to 10% of investor lending (raised from 5%) to those with under a 30% deposit. New builds remain exempt from LVR limits. Alongside this, DTI caps limit most lending to about 6× gross income for owner-occupiers and 7× for investors — so a big deposit alone won’t get you across the line if your income can’t support the loan.

How much deposit do you need?

The standard answer is 20% for owner-occupiers, but there are legitimate lower-deposit pathways: a KiwiSaver first-home withdrawal (after three years’ membership, you can withdraw most of your balance — excluding the $1,000 kick-start if you got one — for a first home; see our KiwiSaver guide); a Kāinga Ora First Home Loan, a government-backed scheme letting eligible first-home buyers in with as little as a 5% deposit, subject to income and house-price caps; low-deposit bank lending (within the LVR speed limits above, though these slots are competitive); and guarantor loans, where a family member uses equity in their own property to guarantee part of your loan (which carries real risk for the guarantor). Note the First Home Grant closed in May 2024, so it’s no longer a source of deposit support.

Comparing lenders

The big four banks hold most home-loan balances, each with its own credit appetite, rate specials and cashback offers that change regularly — see our ANZ home loan guide for one lender’s approach. Non-bank lenders such as Resimac, Pepper Money and Liberty Financial serve borrowers who don’t fit standard bank criteria (the self-employed, complex income, or credit blemishes), usually at higher rates. A mortgage broker works across multiple lenders, is paid by the lender rather than you in most cases, and is regulated by the FMA under the financial advice regime — using one can save time and sometimes unlock rates or cashback not available directly.

The true cost, beyond the rate

The headline rate is only part of the picture.

How an offset mortgage works

You’re charged interest only on your loan minus the money in your linked accounts. On a $600,000 loan with $40,000 across linked accounts, the bank charges interest on $560,000 — at a floating rate of, say, 7%, that saves roughly $2,800 in the first year, and the saving grows as your principal falls.

Your savings stay accessible. The money isn’t locked away — it’s fully available for spending and emergencies. You’re not making an extra repayment, just reducing the balance interest is charged on.

Interest is calculated daily. Every dollar counts from the moment it lands — so it pays to have your salary and emergency fund sitting in linked accounts.

The tax advantage. NZ doesn’t tax interest you save — only interest earned in a savings account. So an offset delivers a tax-free “return” equal to your mortgage rate, which beats a taxed savings account (a 4.5% rate nets ~3% at a 33% tax rate).

The higher your mortgage rate and your tax rate, the more valuable an offset is versus parking cash in savings. Rates and figures here are illustrative — check your lender’s current floating rate.

If you’re refinancing to a new lender, make sure the saving survives the fees and any break costs before switching. And read cashback terms — they typically require you to stay two to four years or repay the cash.

What banks assess (serviceability)

Banks don’t just check today’s repayments — they stress-test your application at a rate typically 2–3% above the offered rate, to be sure you could still service the loan if rates rose. That buffer is why some borrowers are approved for less than they expect. Lenders scrutinise your income (PAYE is straightforward; the self-employed usually need two years of financials; rental income is often counted at 75–80%), existing debts (credit cards — even unused limits — car loans, student loans and buy-now-pay-later all reduce capacity), living expenses (your declared figure or a benchmark, whichever is higher), credit history (from bureaus like Equifax or Centrix), and your deposit source (genuine savings held for three months are viewed more favourably than gifts, though gifts are fine with documentation). A practical tip: a $10,000 credit-card limit can cut your borrowing capacity by $40,000–$50,000 even at a zero balance, so paying down and closing unused cards before applying can help.

Your next steps

Start with a clear picture of your position — income, debts, KiwiSaver and savings — and model different loan sizes and terms with a calculator. Get pre-approval from one or more lenders for a realistic budget and a stronger position when you make an offer. Compare at least two or three lenders (or use a licensed adviser who can access the whole market), read the fine print on cashback, and remember the cheapest rate isn’t always the best deal — flexibility and offset features can be worth more than a fraction of a percent.

Disclaimer: This article is general information about home loans in New Zealand, not financial advice, and not a recommendation of any lender or product. Interest rates, LVR and DTI rules, deposit requirements and first-home support all change — the details here reflect 2026 and should be confirmed with the Reserve Bank, Kāinga Ora and your lender before you act. Consider advice from a licensed mortgage adviser for your own situation. For live rates see interest.co.nz; for the calculator see Sorted (sorted.org.nz).

Which NZ banks offer a true offset

Only a few do — and availability changes, so confirm current products with the bank.

Bank	Product	Linked accounts & family
BNZ	TotalMoney	Up to 50 accounts, including family members’ — the most flexible offering.
Kiwibank	Offset Home Loan	Up to 8 accounts, including a spouse, parents or children (personal names only, no trusts/companies).
Westpac	Choices Floating with Offset	Links everyday and savings accounts, managed in the app; some family linking, conditions apply.
ANZ & ASB	No true offset	They offer revolving credit instead — a different structure (see below).

Offsets work on floating-rate loans only, and typically 100% of your linked balance offsets the loan (often with no minimum — even small balances help). Verify the exact terms, fees and eligible account types with each bank.

Frequently asked questions

How much deposit do I need to buy a house in NZ?

Generally 20% for owner-occupiers and 30% for investors buying existing property, though banks can do a limited share of lower-deposit lending. Eligible first-home buyers may get in with a 5% deposit via a Kāinga Ora First Home Loan, and new builds are exempt from LVR limits.

What are the LVR rules in 2026?

From 1 December 2025, banks can allocate up to 25% of owner-occupier lending to borrowers with under a 20% deposit, and up to 10% of investor lending (up from 5%) to those with under a 30% deposit. New builds are exempt. The Reserve Bank reviews these settings periodically.

What is a DTI cap?

Debt-to-income caps limit most new lending to about 6× gross income for owner-occupiers and 7× for investors. They work alongside LVR rules, so you can have enough deposit but still be limited by your income if rates rose.

Should I fix or float my mortgage?

Fixing gives repayment certainty but penalises early lump sums and breaking; floating is flexible but usually carries a higher rate. In a rising-rate environment the calculus shifts, so weigh certainty against flexibility — and consider advice if a large loan is involved.

Is the cheapest interest rate always the best deal?

No. Establishment and break fees, cashback clawbacks, and features like offset accounts and extra-repayment flexibility can matter more than a fraction of a percent — especially over a 25–30 year loan. Compare the total picture, not just the headline rate.

Should I use a mortgage broker?

A broker compares multiple lenders on your behalf, is usually paid by the lender rather than you, and is FMA-regulated. It can save time and sometimes unlock rates or cashback not available directly — though it’s still worth understanding the basics yourself before you engage one.

Related guides: Offset Mortgage NZ.