How to Refinance for an Offset Account

An offset account links to your mortgage and reduces the interest you pay based on the balance you keep in it.

If your current home loan doesn't have one, refinancing is usually the only way to add it. You can't just bolt an offset onto an existing loan that wasn't set up with that feature from the start. The structure needs to change, which means moving to a new loan product, either with your current lender or somewhere else.

Why Add an Offset Account Through Refinancing

An offset account saves you interest without locking your money away. Every dollar in the account reduces the balance your lender charges interest on, but you can still access that money whenever you need it. If you have $20,000 sitting in the offset and a $400,000 mortgage, you only pay interest on $380,000. That difference adds up quickly over the life of the loan, and unlike a redraw facility, the money stays fully liquid.

Consider someone with a $450,000 mortgage who keeps $15,000 in savings sitting in a regular transaction account earning almost nothing. Moving to a loan with an offset means that $15,000 now works against the mortgage balance. At typical variable rates, that could save several hundred dollars a month in interest without changing how they manage day-to-day expenses. The savings go straight toward paying down the principal faster, or they simply reduce what's owed each month.

The Refinance Process for Adding Features

Refinancing to add an offset account works the same way as any other refinance application. The lender assesses your income, expenses, and property value to confirm you can service the new loan. You'll need payslips, tax returns if you're self-employed, and a current valuation of your property. Most lenders use an automated desktop valuation unless there's a reason to send someone out.

The application itself takes around two to four weeks from lodgement to settlement, depending on how quickly the lender moves and whether anything unusual comes up. You're not increasing the loan amount in most cases, just moving the existing balance to a new product with different features. That makes the process more straightforward than a purchase or construction loan, but the lender still needs to verify everything.

Offset Accounts vs Redraw Facilities

A redraw facility lets you take back extra repayments you've made, but the lender controls access and can change the terms. An offset account is a separate transaction account that you control completely. The balance offsets your loan, but the money is yours to move, spend, or save without asking permission.

In our experience, offset accounts work well for people who want flexibility and visibility. You can see the balance, transfer money in and out, and use it like any other account. Redraw can feel more restrictive, especially if the lender limits how often you can access funds or charges fees for withdrawals. Some lenders have also been known to reduce redraw availability during economic uncertainty, which doesn't happen with offset accounts.

When Refinancing for an Offset Makes Sense

Refinancing purely to add an offset makes sense if you regularly keep a decent balance in savings and you're confident that pattern will continue. If your savings sit at a few hundred dollars most of the time, the interest saving might not justify the cost of refinancing, which can include application fees, valuation fees, and discharge fees from your current lender.

As an example, someone with $30,000 in savings who also receives rental income or keeps a buffer for irregular work would see meaningful benefit. The offset reduces interest on the mortgage while keeping that $30,000 available for emergencies, investment opportunities, or covering gaps in income. The flexibility alone can justify the switch, even before factoring in the interest saved.

If your fixed rate period is ending, that's often the ideal time to make the change. You're already reviewing your loan, and moving to a variable product with an offset doesn't trigger break costs. It's also worth checking if your current lender offers an offset product you can switch to internally, which can sometimes be faster and involve fewer fees than moving to a new lender entirely.

What It Costs to Refinance

Most lenders don't charge ongoing fees for offset accounts, but the loan product that includes the offset might have a slightly higher interest rate than a basic variable loan. The difference is usually small, often around 0.10% to 0.20%, and the interest saved through the offset typically outweighs that margin if you keep a reasonable balance in the account.

Refinancing itself can involve a discharge fee from your current lender, usually between $300 and $500, plus any application or valuation fees from the new lender. Some lenders waive these costs as part of a refinance offer, particularly if you're moving a large loan balance. A loan health check can help you weigh up whether the long-term saving justifies the upfront cost.

Choosing the Right Loan Product

Not all offset accounts work the same way. Some lenders offer a 100% offset, meaning every dollar in the account reduces your interest by the full amount. Others offer partial offsets, usually around 40% to 60%, which don't deliver the same value. You want a 100% offset attached to a variable rate loan with no restrictions on how you use the account.

Some lenders also let you link multiple offset accounts to the same loan, which can be useful if you're managing household expenses, savings, and business income separately. That level of flexibility suits people with more complex cash flow, but it's not necessary for everyone. The key is making sure the offset account matches how you actually manage money, not how you think you should.

If you're also looking to refinance your home loan for a lower rate, you can combine both goals in the one application. Moving to a loan with an offset and a lower rate gives you two levers working in your favour, and the process doesn't take any longer than refinancing for just one reason.

Call one of our team or book an appointment at a time that works for you. We'll compare loan products across multiple lenders, check whether your current lender has an internal option, and walk you through what the numbers look like before you commit to anything.

Frequently Asked Questions