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How does an offset account save you money on your WA home loan?

By the Pilbara Finance broking team · Updated

The short answer

An offset account is one of the simplest ways to cut the interest on your home loan and pay it off years sooner, and most banks do not shout about it. Here is how an offset account actually works, why it usually beats a savings account, and how to set one up the right way in WA.

A person holding a bank card, representing everyday money that can work harder in an offset account against a home loan

Let me tell you about the one feature on a home loan that quietly saves people a small fortune, and that your bank will never put in an ad. It is the offset account. No new product, no clever trick, no risk. Just your everyday money, sitting where it already sits, cutting your interest and chewing years off your loan. Here is exactly how it works, why it beats a savings account hands down, and how we set one up properly across our lender panel.

So what is an offset account, really?

Short answer: An offset account is just an everyday transaction account, bolted onto your home loan. Whatever sits in it gets knocked off your loan before the bank works out your interest. Owe 700,000 dollars, keep 50,000 dollars in the offset, and you are charged interest on 650,000. Same money you already had. Less interest paid.

Think of it as your normal bank account, quietly doing a second job. Your pay lands in it. Your bills come out of it. You spend off a card attached to it.And the whole time, every dollar in there is a dollar the bank cannot charge you interest on.

So why don’t the banks push it? Simple. The more you keep in your offset, the less they make off you. This is one of the best tools a borrower has, and it is sitting right there on most variable loans, waiting to be used properly.

How does an offset account actually save you money?

Short answer: Your interest is worked out every single day, on your loan balance minus your offset balance. The more you keep in there, and the longer it stays, the less interest you are charged. On a 750,000 dollar loan with 50,000 dollars offset, the bank charges interest on 700,000 dollars instead. Every day.

This is the engine of the whole thing. Each day, the lender takes your loan balance, subtracts what is in your offset, and charges interest on what is left.So your everyday cash is working for you around the clock. It does not have to be invested. It does not have to be locked away. It just has to sit there.

Do not take my word for it. The team at Moneysmart lay the mechanics out plainly in their guide to mortgage offset accounts.

The bit most people miss: your loan shrinks faster

Short answer: Here is the part people trip over. Your repayment does not drop when there is money in offset. It stays the same. But less of it gets eaten by interest, so more of it pays down the actual loan. That is the quiet magic that brings your loan term forward by years.

Picture your repayment as one fixed amount, split into interest and principal.When your offset shrinks the interest part, that leftover does not disappear. It gets pushed straight onto the principal. Same repayment, more of the real debt gone each month.

Stretch that over the life of a loan and it adds up fast. On a large loan with a steady offset balance, the modelling commonly shows big numbers. Think tens of thousands of dollars in interest saved, and several years knocked off the term.That is a model, not a promise, and your numbers will be your own. But the direction never changes. More in offset, less interest, loan gone sooner.

Offset vs a savings account: it is not even close

Short answer: A savings account earns interest, and the tax office takes a cut of it. An offset earns nothing, but it saves you loan interest, and that saving is not taxed. Since your home loan rate is usually higher than a savings rate, the offset wins on both counts, dollar for dollar.

This is the one that surprises people. Money in a savings account earns interest, and that interest is taxable income.Money in an offset earns nothing on paper, but it saves you loan interest, and what you save is not taxed. Your loan rate is usually higher than any savings rate too. So the same dollars, moved from savings to offset, quietly do more work.

Offset account vs a savings account

What mattersSavings accountOffset account
What it does for youEarns interest on your balanceCuts the interest charged on your home loan
TaxInterest earned is taxable incomeThe interest you save is not taxed
Access to your moneyAvailable any timeAvailable any time, like a normal account
Effect on your loanNoneMore of each repayment pays down the loan

Money in a savings account is taxed. Money in an offset is not. So the same dollars, sitting in an offset against your home loan, usually leave you further ahead, and they quietly shave time off your loan while they do it.

Your accountant can confirm the tax side for your situation. This is general guidance, not tax advice.

The clever move: running more than one offset account

Short answer: You do not have to keep everything in one account. Plenty of lenders let you run several offset accounts against the one loan. You split your money into a savings bucket, a spending bucket and a holiday bucket, and every single one of them still offsets your mortgage. Organised, and all working at once.

This is where it gets good, and where the lender you are with really matters.Some loans give you one offset. Others let you run several against the same mortgage. That means you can keep your everyday spending, your savings and your holiday fund in separate buckets, and every dollar in every bucket is still pulling interest off your loan.

This is exactly what our panel is for. We work with more than 60 lenders, and a lot of them allow multiple offset accounts. We will show you which ones do it well, lay out the full picture, and set it up around how you actually manage your money, not some textbook version of it.

How do we set yours up the right way?

Short answer: Make sure it is a genuine offset, that it is properly linked, and that the rate and fees still stack up. Not every loan has a true offset, and not every offset is worth the cost. We check all of that across our 60-plus lender panel and set it up so it genuinely works for you.

Make sure it is a genuine, linked offset

First, check it is a true offset, and that it is actually linked to your loan.Not every account called an offset behaves like one.

Worth knowing: an ASIC review found some offset accounts were not properly linked, so people quietly paid more interest for nothing. Check yours is working in your banking app, and check again after any refinance. We confirm it as part of the set-up.

Weigh up the rate and fees, then set it up

An offset usually sits on a variable loan. A slightly higher rate or an annual fee can eat into the benefit if your balance is small. Here is how we help you sort it:

  1. Have a quick chat with us about your loan and how you keep your money.
  2. We check whether your current loan has a true offset, and whether it is linked properly.
  3. We compare offset options across our 60-plus lender panel, rate and fees included.
  4. If a switch leaves you better off, we handle the refinance and set up the structure.
  5. You put your everyday money to work, cutting interest and your loan term.

If you are reviewing your loan anyway, it is the perfect time to get your offset sorted. Our home loan refinancing page is a good starting point. Not sure what to ask? Our guide on the questions to ask a mortgage broker in WA will help. Get in touch, and let’s make your money work harder.

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This guide is general information for the Australian market, not advice about your situation. Lender credit policy changes, and what applies to you depends on your circumstances. Pilbara Finance is a credit representative (478535) of Mortgage Specialists Pty Ltd, Australian Credit Licence 387025.

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