How to Compare Mortgage Rates in New Zealand

Choosing a mortgage is one of the biggest financial decisions you’ll make in New Zealand. With dozens of lenders offering different rates, fees, and features, comparing mortgage rates properly can save you thousands of dollars over the life of your loan.

This guide walks you through the key steps and concepts to compare mortgage rates like an expert. We cover how to look beyond the headline rate, what fees to watch for, and which features matter most for your situation.

Step 1: Understand the types of mortgage rates in NZ

Before you compare, you need to know the main types of mortgage rates available in New Zealand.

Fixed rate

A fixed rate locks your interest rate for a set period — commonly 1, 2, 3, or 5 years. Your repayments stay the same during that term, which gives you certainty. If interest rates rise, you’re protected. If they fall, you won’t benefit until the fixed term ends.

Floating (variable) rate

A floating rate changes when the lender adjusts its official rate. Your repayments can go up or down. Floating rates are usually higher than fixed rates, but they offer flexibility — you can make extra repayments without penalty, and there are usually no break fees if you switch lenders.

Special rates vs standard rates

Many lenders offer a lower “special” rate if you have a deposit of 20% or more. Standard rates apply for lower deposits. Always check which rate you qualify for.

Step 2: Compare the annual interest rate (not just the advertised rate)

The advertised rate is a starting point, but it’s not the full picture. You need to compare the annual interest rate — sometimes called the nominal rate — which is the rate applied to your loan balance each year.

Some lenders offer a low introductory rate that jumps higher after a few months. Others give a cash contribution that can offset a higher rate. Always read the fine print and calculate the total cost over the full term.

Step 3: Check the fees that add to your total cost

A low interest rate can be wiped out by high fees. When comparing mortgages, look for these common NZ fees:

  • Establishment fee — charged when you set up the loan (ranges from $0 to $500+)
  • Annual or monthly account fee — some lenders charge a recurring fee (typically $10–$15 per month)
  • Loan break fee — charged if you fix your rate and want to break the term early
  • Early repayment fee — applies to some fixed-rate loans if you pay off extra
  • Top-up or restructure fee — charged if you want to increase your loan or change terms

Add up all fees over the life of the loan to compare the true cost. A slightly higher rate with no fees can be cheaper than a low rate with high annual charges.

Step 4: Compare key features that affect your flexibility

Features can make a big difference to your financial freedom. When comparing mortgage rates, also compare these features:

  • Extra repayment allowance — how much extra can you pay each year without penalty? (common: 5% of the loan balance per year)
  • Revolving credit or offset account — allows you to use your savings to reduce interest
  • Redraw facility — lets you withdraw extra repayments you’ve made
  • Portability — can you transfer the loan to a new property if you move?
  • Interest-only option — available for a limited period, usually for investors

Prioritise features that match your goals. If you plan to make extra repayments, a flexible loan with no early repayment penalty is essential.

Step 5: Use a mortgage comparison table (like the one below)

To compare effectively, create a table with the key details for each lender you’re considering. Here’s an example based on typical NZ mortgage products:

Lender 1-year fixed rate Annual fee Extra repayment allowance Cash contribution
ANZ Check current rate $0 (with certain packages) Up to 5% per year Up to $3,000 (conditions apply)
Westpac Check current rate $10/month (or $0 with package) Up to 5% per year Up to $2,000 (conditions apply)
ASB Check current rate $0 (with certain packages) Up to 5% per year Up to $3,000 (conditions apply)
Kiwibank Check current rate $0 (with certain accounts) Up to 5% per year Up to $2,500 (conditions apply)

Note: Interest rates, fees, and cash contributions change frequently. Always check with the provider for the latest details.

Step 6: Consider the total cost over the loan term

Don’t compare rates in isolation. Calculate the total interest and fees you’ll pay over 1, 2, or 5 years. A lower rate might save you $100 per month, but a $500 annual fee could eat into that saving.

Use an online mortgage calculator (most NZ banks and comparison sites offer them) to see the difference. Input the loan amount, interest rate, term, and fees to get a realistic comparison.

Step 7: Check the lender’s service and reputation

Price isn’t everything. A lender with poor customer service can make the mortgage process stressful. Check online reviews, ask friends or family, and see if the lender offers a good online banking experience.

Also consider whether the lender is a registered bank in New Zealand. Most major banks (ANZ, ASB, BNZ, Westpac, Kiwibank) are backed by the Reserve Bank of New Zealand’s deposit insurance scheme. Non-bank lenders may offer competitive rates but carry different risks.

Tips for comparing mortgage rates like a pro

  • Always compare the same type of rate — fixed vs fixed, floating vs floating
  • Look at the comparison rate — some lenders show a “comparison rate” that includes fees
  • Check the break fee policy — if you might sell or refinance, a low break fee is valuable
  • Don’t be swayed by cash contributions alone — a $3,000 cash offer is nice, but a lower rate can save you more over time
  • Consider a mortgage broker — brokers can compare multiple lenders and negotiate on your behalf

Crunch the numbers yourself: Use our Mortgage Repayment Calculator to see what your monthly payments could be at different interest rates and loan terms.