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Loan structure

Getting the best from your home loan

Most people focus on the rate. The way the loan is split, where your savings sit and when you refix usually matter just as much.

By Yatin Kainth, Financial Adviser FSP1007497. Last reviewed 6 October 2026

Short answer

To get the best from your home loan in NZ, split it across a few fixed terms so not all of it reprices at once, keep a floating, offset or revolving portion for savings and extra repayments, keep repayments the same when rates fall, and review the loan every time a fixed term ends. Small structural changes often save more than a slightly lower rate.

Test a loan split

See how much interest your savings could save when they sit against the floating part of your loan, and how much flexibility the split gives you.

Total loan ($)Savings you could hold in an offset or revolving account ($)Fixed rate (%)Floating or revolving rate (%)Amount on floating or revolving ($)

Interest in year one

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Interest saved by your savings sitting against the floating part

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Flexibility

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Simplified year-one interest, ignoring principal repayments. Example rates only. Your savings only reduce interest on the floating or revolving part.

The three parts of a well-built loan

Fixed portions give certainty. Spreading them across terms, say 1 and 2 years, means you’re never refixing everything at once.
Floating lets you make extra repayments or repay early without break fees.
Offset or revolving credit lets your savings and pay reduce the interest every day. They work well if you’re disciplined with spending. See revolving credit explained.

Habits that save the most

Keep your repayments the same when rates drop. The difference goes straight off the principal.
Match repayments to your pay cycle, weekly or fortnightly.
Use your lump-sum allowance. Most banks let you pay a set amount extra each year on fixed loans without a fee.
Ask for a better rate at refix. Banks often have room to move, especially if another lender is interested.
Review after life changes: a pay rise, a new baby, a business or a separation.

When to refix

Your bank usually sends rate options a few weeks before your fixed term ends. That’s the time to compare, not the day it rolls over. I look at the rate, the term spread, any cash contribution from another lender and whether the structure still suits you. Read fixed or floating: how to choose.

Debt reduction

Pay your mortgage off years sooner.

Pay it off →

Refinancing

When switching lenders makes sense.

Refinancing →

Interest-only loans

When paying interest only helps, and what it costs.

Interest only →

Using home equity

Borrowing against what you’ve built up.

Equity →

Talk it through

I’m Yatin Kainth, a Financial Adviser at Mortgage Sense in Hobsonville, Auckland (FSP1007497), comparing 30+ lenders. Advice is provided under the Mortgage Managers licence (North West Group Holdings Ltd, FSP682791). This page is general information, not personalised advice. See the Disclosure Statement.

Book a free chat or call 022 064 7770.

Common questions

What is an offset home loan?

An offset loan links your everyday or savings account to part of your mortgage. You pay interest only on the loan balance minus the savings. You keep access to the money.

Is revolving credit a good idea?

It can save a lot of interest if your pay goes in and spending is controlled. It works like a big overdraft, so it can also make debt harder to pay down if spending creeps up.

How many splits should my home loan have?

Two to four is usual: a couple of fixed terms plus a floating or revolving part. Too many splits just adds admin.

Can I ask my bank for a lower rate?

Yes. Banks often negotiate, especially at refix time or if you have an offer from another lender. A broker can do this for you.

Sources

Want your loan structure checked?

Send me your current loan split and refix dates. I’ll suggest changes, even on loans I didn’t arrange.

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