Offset Accounts vs Redraw Facilities: Common Mistakes

What an Offset Account Does Differently

An offset account is a separate transaction account linked to your home loan, where the balance reduces the interest you pay without reducing your loan balance itself. A redraw facility lets you make extra repayments above the minimum and withdraw those funds later, but the extra payments reduce your loan balance immediately.

Consider a general dentist who holds an owner-occupied variable rate loan of $600,000 and keeps $50,000 in savings. With an offset account, the $50,000 sits in a transaction account linked to the loan, and interest is calculated on $550,000 instead of $600,000. The loan balance remains $600,000, and the $50,000 is accessible at any time without restriction. With a redraw facility, the dentist makes a $50,000 extra payment, reducing the loan balance to $550,000, then later requests a redraw to access those funds. The outcome looks similar in terms of interest saved, but the mechanics and tax implications differ.

How the Tax Treatment Changes Between the Two

The tax treatment matters when your loan is used for investment purposes or when you later convert an owner-occupied property to an investment. With an offset account, the loan balance does not change when you deposit or withdraw funds. If you convert the property to an investment, the deductible portion of your loan remains the original amount borrowed for the property. With a redraw facility, extra repayments reduce the loan balance, and when you redraw, you are effectively increasing the loan again. If the purpose of that redrawn amount is not investment-related, the ATO may treat that portion as non-deductible.

In a scenario where an orthodontist purchases a home with a $700,000 loan, makes $100,000 in extra repayments over three years, then converts the property to an investment and redraws $100,000 to fund a holiday, the deductible loan amount may be limited to $600,000 rather than $700,000. The $100,000 redraw was not used to purchase or improve the investment property, so that portion of the loan is not deductible. Had the orthodontist kept the $100,000 in an offset account instead, the full $700,000 loan would remain deductible because the loan balance never changed.

Why Lenders Restrict Redraw Access in Some Circumstances

Lenders can and do restrict access to redraw facilities, particularly during times of financial stress or if the loan is in arrears. The funds in a redraw are not held in a separate account. They are additional equity in your loan, and the lender has discretion over whether and when you can access them. Some lenders have temporarily suspended redraw access for certain borrowers during periods of economic uncertainty. Offset accounts, by contrast, are transaction accounts in your name, and the funds remain accessible regardless of your loan status.

This distinction becomes relevant when cash flow flexibility is a priority. A periodontist managing variable income across multiple practice locations may prefer the certainty of an offset account, where $80,000 held in reserve remains available to cover payroll or supplier costs without requiring lender approval. With a redraw facility, that same $80,000 would be subject to the lender's terms and processing times, which could delay access when it is needed most.

When Fixed Rate Loans Limit Your Options

Most fixed rate home loans do not offer offset accounts. Lenders typically provide a redraw facility instead, often with annual caps on extra repayments and restrictions on withdrawals. If you fix a portion of your loan and want the flexibility of an offset, you will need to structure it as a split loan, with the variable portion linked to the offset and the fixed portion using redraw or no prepayment feature at all.

A dental hygienist with a $500,000 split loan, $300,000 fixed and $200,000 variable, could link an offset account to the variable portion only. If the offset holds $40,000, the interest saving applies to the $200,000 variable component, calculated as though the balance is $160,000. The $300,000 fixed portion continues to accrue interest at the fixed rate on the full amount. This structure works well when you want rate certainty on part of your borrowing but still need access to offset benefits on the variable portion. More detail on split loan structures is available on our page about home loans for dentists.

How Offset Accounts Affect Your Borrowing Capacity

Some lenders reduce the interest rate discount available on a loan when an offset account is included. The offset feature is seen as a cost to the lender because it reduces the interest they collect, and that cost is sometimes passed on through a higher rate. The difference is usually between 0.05% and 0.15%, though it varies by lender and loan product. If your priority is the lowest possible rate and you do not plan to hold significant savings in the offset, choosing a loan without the offset feature may result in lower overall interest costs.

When calculating serviceability, lenders assess your ability to repay the loan based on the full loan amount, not the amount after offset. If you hold $100,000 in an offset against a $700,000 loan, the lender still assesses your capacity to service $700,000. The offset balance is treated as savings, which may improve your application in other ways, but it does not reduce the assessed loan amount for serviceability purposes. This distinction is relevant when you are close to your maximum borrowing capacity and considering whether to use savings for a larger deposit or hold them in an offset.

What Happens When You Refinance or Restructure

When you refinance to a new lender, the balance in your offset account does not transfer automatically. The account is closed, and you will need to open a new offset account with the new lender if the loan product supports it. Funds in a redraw facility are embedded in your loan balance, so when you refinance, the lower loan balance transfers, but you lose access to the redraw function from the previous lender. If you anticipate needing access to those funds, you may need to redraw before refinancing or ensure the new loan includes a redraw or offset feature.

This becomes relevant when dentists are refinancing to access equity or switching lenders for a lower rate. If you have built up $120,000 in redraw and want to access $80,000 of that for a renovation, you can redraw before settlement, or structure the new loan to release equity at the same time. If you hold $120,000 in an offset, you simply transfer the funds to the new offset account once it is opened, without needing to adjust your loan amount.

Which Feature Suits Your Current Position

Your choice between an offset and redraw depends on whether you plan to convert the property to an investment, how much cash flexibility you need, and whether you are willing to pay a slightly higher rate for the offset feature. Dentists with irregular income, high savings balances, or plans to build an investment portfolio usually benefit from an offset. Dentists focused on paying down debt quickly and not concerned about future property conversions may find a redraw facility sufficient, particularly if it comes with a lower rate.

If you are buying your first home and plan to upgrade in a few years, holding savings in an offset rather than making extra repayments gives you the option to convert the property to an investment without affecting the deductible loan amount. If you are purchasing an investment property from the outset, an offset account is almost always the right choice because it preserves the full loan balance as deductible and keeps your funds separate. More information on structuring investment loans is available on our investment loans for dentists page.

Call one of our team or book an appointment at a time that works for you to discuss which loan structure aligns with your income, savings pattern, and property plans.

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