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Links Property Finance · Investment property mortgage broker, Sydney: What Is an Offset Account?

An offset account is the simplest useful feature in home lending and the most frequently mis-sold.

Reviewed by Charles Touma Updated 18 October 2026

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How does an offset account work, and when does it not?

An offset account is a transaction account linked to your home loan: its balance is subtracted from the loan before interest is charged, so it saves interest at your loan rate while staying accessible.

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Unlike redraw, the money is yours in a separate account, which matters if the home later becomes an investment. It is worth a package fee only if your average balance saves more than the fee.

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What decides whether an offset pays

Four inputs, and you can estimate all of them yourself.

The balance you will hold

Not the balance you hope to. Interest is calculated daily, so the average balance across the year is what counts.

Your interest rate

The higher the rate, the more each dollar in offset saves. Run it in the offset calculator.

The package fee

Annual fees vary. The saving needs to clear it before the offset is doing anything for you.

Whether the property may become an investment

If it might, the offset-versus-redraw decision is worth taking seriously now rather than later.

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How does an offset account work?

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  • An offset is an everyday transaction account linked to your loan.
  • Interest is charged on the loan balance minus the offset balance, calculated daily.
  • Thirty thousand dollars sitting in offset against a six hundred thousand dollar loan means interest is charged on five hundred and seventy thousand.
  • The money remains yours, spendable at any time, which is the entire point: you get the interest benefit without surrendering access.

Offset versus redraw

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  • Redraw gives you access to extra repayments you have already made into the loan.
  • Both reduce interest.
  • The practical difference is ownership of the funds: offset money is your savings sitting beside the loan, redraw money has been paid into the loan and is being borrowed back.
  • For an owner-occupier who never moves, the difference is mostly administrative.
  • If the property might one day become an investment, it matters considerably.

Why does it matter for future investors?

If you later rent out the home, the deductibility of the debt generally follows what the borrowed money was used for. Money redrawn from a loan and spent on something else can change the character of that portion of the debt.

The capital gains side is covered in renting out your home and the 6-year rule. Money sitting in an offset was never repaid into the loan, so the loan balance is undisturbed.

That is a tax question rather than a lending one and belongs with your accountant, but the structure decision is made when you take the loan.

When is it not worth it?

Offsets usually sit inside a package with an annual fee. If the balance you will realistically hold is a few thousand dollars, the interest saved may not cover the fee, and a simpler no-frills loan at a lower rate can be better.

There are also partial offsets, where only a percentage of the balance counts, and multiple-offset products for people who bucket their savings. These are genuine product differences worth comparing rather than assuming.

Common questions about offset accounts

How much do I need in offset to make it worthwhile?

Enough that the interest saved each year beats any package fee: at the 6% example rate, each $10,000 held in offset saves about $600 a year, so compare that with the fee.

The arithmetic takes a minute and is worth doing rather than accepting either the sales pitch or the dismissal.

Can I have more than one offset account?

Sometimes: some lenders allow several against one loan, which suits people who keep savings in buckets, others allow one, and some offer only a partial offset. It is a real difference between products, so check before choosing a lender.

Is offset better than making extra repayments?

They save similar interest, so it comes down to access: offset keeps the money available and the loan balance undisturbed, which matters if the property might become an investment, while extra repayments reduce the debt directly and suit people who would rather not have the money to spend.

Does the money have to stay in the account?

No. Interest is calculated on the daily balance, so funds moving in and out change the saving day by day. Many people run their salary through the offset and pay expenses from it, so the balance works while it sits there.

Do all lenders offer proper offset accounts?

No, and the differences matter. Some offer full offset, some partial, some none, and some restrict offset to particular loan types or to variable portions only. A fixed-rate loan often has limited or no offset available, which is one of the trade-offs in fixing.

Get a straight answer for your situation

Charles can compare a package with offset against a no-frills loan on your actual balance and rate.

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Reviewed by Charles Touma Director & Mortgage Broker · MFAA member · Credit Representative 579003 under ACL 389328 About Charles · MFAA register · ASIC register · Complaints processEvery page is reviewed by Charles before it is published and checked against current lender policy and the official scheme pages linked where figures appear.

General information only, not credit or financial advice. Professional lending policies, eligible occupations and loan-to-value thresholds vary by lender and change over time. Eligibility is confirmed against current lender policy in an assessment; nothing on this page is a promise that any lender will approve any application.