Offset Accounts: What Not to Overlook

An offset account sits alongside your home loan and reduces the interest you pay by offsetting your savings balance against what you owe.

Not every borrower needs one, and not every loan package includes one without a cost. Whether an offset account makes sense depends on how much you keep in savings, what you're paying in account fees, and whether you'd benefit more from a lower rate without the offset feature attached.

How a Linked Offset Works With Your Home Loan

A linked offset account is a transaction account connected to your home loan. The balance in the offset account is subtracted from your loan balance when your lender calculates interest, but you keep full access to the money.

Consider a borrower with a $400,000 variable rate home loan and $20,000 sitting in a linked offset. Interest is calculated on $380,000 instead of the full loan amount. That $20,000 stays available for everyday spending, but it's working to reduce interest every day it sits in the account. The borrower still makes the same minimum repayment each month, which means more of that repayment goes toward reducing the principal rather than covering interest.

This structure works well for owner-occupied borrowers who keep a buffer in their transaction account or who receive irregular income, such as bonuses or seasonal work payments. It's also useful for anyone who wants to keep savings liquid without locking funds into the loan as extra repayments.

When the Account Fee Costs More Than the Offset Saves

Most lenders charge an annual package fee or monthly account fee to include an offset account with a variable rate home loan. That fee typically sits between $200 and $400 per year, depending on the lender and the loan package.

If you're holding a low balance in the offset account, the interest saved may not cover the fee. At current variable rates, a $10,000 offset balance might save around $500 to $600 in interest over a year. If the package fee is $395, the net benefit is modest. If your average balance drops to $5,000, the fee starts to outweigh the saving.

In our experience, borrowers who don't maintain at least $10,000 to $15,000 in the account on average are often paying more for the feature than they're receiving in return. If your savings sit in a separate high-interest account or if you prefer to make lump sum payments directly into the loan, a no-frills variable rate without an offset can deliver a lower interest rate and no package fee.

Offset Accounts and Split Rate Structures

You can attach an offset account to the variable portion of a split loan, but not to the fixed portion. This setup allows you to lock part of your borrowing at a fixed interest rate while keeping flexibility and offset benefits on the remainder.

As an example, a borrower might fix 60% of a $450,000 home loan and leave 40% on a variable rate with an offset attached. The offset balance reduces interest on the $180,000 variable portion, while the fixed portion provides repayment certainty. If the borrower builds up $25,000 in the offset over time, interest on the variable portion is calculated on $155,000 instead of $180,000.

This approach suits borrowers who want some rate protection but also expect to accumulate savings or receive lump sums they'd like to put to work without losing access. The trade-off is that the variable portion typically carries a slightly higher rate than a standalone variable loan without offset features, and the package fee still applies. If you're considering a split rate structure, it's worth running the numbers on whether the offset delivers enough value on the smaller variable balance to justify the fee.

What Happens to Your Offset When You Refinance

When you refinance your home loan, your existing offset account doesn't automatically transfer to the new lender. You'll close the old account and open a new one with the new lender, assuming the new loan package includes an offset feature.

The balance in your current offset account can be transferred as part of the settlement process, but there's usually a gap of a few days where the funds sit elsewhere. During that time, they're not offsetting your loan balance. If you're refinancing to access a lower interest rate or remove an account fee, it's worth checking whether the new loan includes an offset account and what the package fee is before you commit.

Some borrowers refinance specifically to remove an offset account they're not using and switch to a lower rate product without the feature. Others refinance to add one if their financial situation has changed and they're now holding more in savings. Either way, the offset account itself isn't portable between lenders, even if the loan amount and property stay the same.

Offset vs Extra Repayments for Building Equity

Both an offset account and making extra repayments into your home loan reduce the interest you pay and help you build equity faster. The key difference is access.

Money in an offset account remains in a separate transaction account. You can withdraw it at any time without needing lender approval or paying a redraw fee. Extra repayments made directly into the loan reduce your loan balance, but accessing those funds again usually requires a redraw request, and some lenders charge a fee or limit how often you can redraw.

For borrowers who want a financial buffer or who are saving for something specific while still reducing interest, the offset account offers more flexibility. For borrowers who prefer to lock savings away and reduce their loan balance permanently, making extra repayments directly into a low-rate variable loan without an offset can be more cost-effective, particularly if they're not paying a package fee.

If you're focused on improving your equity position to refinance or access future borrowing capacity, both strategies work. The choice depends on whether you value access over simplicity and whether the account fee is justified by your average balance.

Offset Accounts for Investment Loans

Offset accounts are particularly valuable on investment loans because they allow you to reduce interest without reducing the deductible debt. When you make extra repayments directly into an investment loan, you reduce the principal, which can reduce the amount of interest you can claim as a tax deduction.

An offset account keeps your loan balance unchanged while still reducing the interest charged. You're paying less interest overall, but the full loan amount remains deductible. This structure is widely used by property investors in Tasmania who want to manage cash flow and minimise taxable income without affecting their deduction.

If you're considering an investment loan or already hold one, an offset account is often worth the package fee even if your balance is modest, because the tax benefit compounds the interest saving. Just make sure the funds in the offset are genuinely investment-related and haven't been mixed with personal savings, as that can complicate your deduction claims.

Does Your Loan Package Include Full or Partial Offset

Most offset accounts offered by major lenders in Australia are 100% offset accounts, meaning every dollar in the account reduces your loan balance by the same amount when interest is calculated. Some lenders, particularly smaller or non-bank lenders, offer partial offset accounts, where only a percentage of the balance is offset against the loan.

A partial offset at 60% means that $10,000 in the account only offsets $6,000 of your loan balance. You're still paying interest on the remaining $4,000. Partial offset accounts are less common now, but they still appear in some loan products, particularly those marketed as low-fee or no-frills packages.

Before you choose a loan package based on the presence of an offset account, confirm whether it's a full or partial offset and what the monthly or annual fee is. A partial offset with no fee might still cost you more in interest than a full offset with a $300 annual package fee, depending on your balance.

If you'd like to compare home loan options and understand what's included in each package, call one of our team or book an appointment at a time that works for you.

Frequently Asked Questions