An offset account and a redraw facility can both reduce the interest you pay, but they work differently. An offset is a separate transaction account whose balance reduces the loan amount used to calculate interest. Redraw is access to extra repayments that have already been paid into the loan. That difference can matter for day-to-day flexibility and can become particularly important if a home later becomes an investment property.
- Offset money remains in a separate transaction account
- Redraw is access to extra principal repayments
- Fees and access rules differ by lender
- Tax tracing can become important for future investment use
- Loan purpose matters more than the security property for interest deductibility
How an offset account works
Money remains in a separate bank account linked to the mortgage. If the loan is $600,000 and the offset holds $50,000, interest is generally calculated as though the relevant loan balance were $550,000. The money is still available for bills or transfers subject to the account terms.
Some offset products carry package fees or a higher interest rate, so the feature is only worthwhile if the savings and flexibility justify the cost.
How redraw works
With redraw, you make repayments above the required amount and may later be able to withdraw some of those extra repayments. Access rules vary: lenders can impose minimum redraw amounts, daily limits, delays or restrictions.
From a cash-flow perspective redraw can feel similar to an offset, but legally and for tax tracing it is not the same thing. A redraw is generally treated as a new borrowing when funds are taken back out, so the purpose of that redraw can matter.
Which structure suits investors?
For a home that might later become a rental, keeping spare cash in an offset rather than paying it permanently into the loan can preserve more flexibility. Redrawing later for private spending can create mixed-purpose debt and record-keeping complexity.
Tax outcomes depend on the use of borrowed funds, not simply which property secures the loan. Always get tax advice before changing debt structures around an investment property.
Frequently asked questions
Is an offset always better than redraw?
No. If you keep only a small balance in offset, a package fee or higher rate may outweigh the benefit.
Can a lender restrict redraw?
Yes. Access is subject to the loan terms and lender policy.
Why do investors often prefer offset accounts?
They can preserve the original loan balance while keeping cash separate, which may simplify future debt tracing. Tax advice is still essential.