Glossary
A redraw facility is extra repayments sitting inside your home loan, accessible on the bank's terms. It saves the mortgage rate like an offset, but the bank controls the tap - and on an investment loan it can contaminate your deductions.
A redraw facility is the portion of extra repayments you have made into a home loan that you can withdraw again. The money reduces the loan balance from the day it lands, so interest is charged on the smaller balance - a $20,000 extra repayment on a $600,000 loan at 6 percent saves roughly $1,200 a year. Unlike an offset account, the money is inside the loan rather than a separate account, and access is on the bank's terms rather than yours.
The terms are the part people skip. Banks can set minimum redraw amounts, charge redraw fees, and - as MoneySmart warns - change or freeze access at their discretion, including during hardship. On an investment property, redrawing for personal spending reduces the loan balance and can contaminate the deductibility of the interest, which is the ATO trap the offset avoids. The facility is free on many loans and priced into others through higher rates or package fees.
Walk one month. You owe $600,000 at 6 percent and hold $20,000 of extra repayments in redraw. Interest is calculated daily on $580,000 rather than $600,000 - roughly $95 a day instead of $99 - which is $100 a month, or $1,200 a year, of interest you never pay. The saving is identical to what an offset balance of the same size would save; the difference is who controls the money.
The access rules are the second mechanism. Redraw is a contract feature, and the contract sets the terms: minimum redraw amounts of $500 to $1,000 on many products, redraw fees on some, and discretionary access the bank can suspend - MoneySmart's guidance warns lenders can change or freeze redraw during hardship, exactly when the money is needed. The emergency fund parked in redraw is a buffer the bank administers, and the emergency fund entry covers the sizing.
The tax mechanics are the third mechanism. On an investment loan, redrawing for personal spending reduces the loan balance and mixes private borrowing into a deductible loan - the ATO treats the interest on the redrawn portion as non-deductible, and the contamination is permanent. The offset preserves the loan balance and the deductions, which is why investors prefer it. Extra repayments on fixed-rate loans are also capped at $10,000 to $20,000 a year on most products, which is why the redraw on a fixed loan is small. The redraw facility calculator prices the savings at any balance.
For an Australian reader, the redraw is the buffer inside the mortgage. The money saves the loan rate from the day it lands, and on an owner-occupied home that saving is tax-free. The trap is the access: the bank controls the tap, sets the minimums, and can freeze the feature during hardship. The offset account entry covers the separate-account version that trades a slightly higher rate for control. The comparison rate entry folds the facility's price into the true cost.
A colleague named Brent (yes, that Brent) used his redraw as the family emergency fund, then lost his job in a restructure and requested a withdrawal during hardship. The bank froze access while the hardship process ran, and the buffer he had built was unavailable for six weeks. The highest-leverage thing most Australians can do is size the emergency fund in an offset or savings account you control, and treat the redraw as acceleration on the loan rather than a bank account.
The extra repayment cuts the interest-charged balance to $580,000, saving roughly $100 a month or $1,200 a year, tax-free on an owner-occupied home. Left in place over ten years, the saving compounds - the loan balance stays $20,000 lower, and the interest saved on the smaller balance keeps applying. The same $20,000 in an offset saves identical interest; the difference is who controls the access. The redraw facility calculator prices the saving at any balance and rate.
Brent's $15,000 of extra repayments sat in redraw when he lost his job, and the withdrawal request landed during hardship. The bank suspended access while the hardship process ran - MoneySmart's guidance confirms lenders can freeze redraw at their discretion - and the buffer was unavailable for six weeks. The same $15,000 in an offset account was his money, accessible the same day, regardless of his employment status. The emergency fund entry covers the sizing that keeps the buffer accessible.
An investor with a $400,000 deductible investment loan redrew $30,000 for a car. The redraw reduced the loan balance and mixed private borrowing into the deductible loan - the interest on the redrawn $30,000 is not deductible, roughly $1,800 a year of deductions lost at 6 percent, and the contamination is permanent: redrawing it back does not fix the purpose test. The offset preserves the loan balance and every dollar of the deductions. The negative gearing entry covers the deduction arithmetic.
Mistake: Using the redraw as the family emergency fund.
Why it bites you: The bank controls access, sets minimums and can freeze the feature during hardship - exactly when the money is needed. Brent's six-week freeze is the case.
Mistake: Redrawing on an investment loan for personal spending.
Why it bites you: The redraw mixes private borrowing into a deductible loan, and the interest on the redrawn portion is not deductible. Roughly $1,800 a year of deductions lost on a $30,000 redraw at 6 percent.
Mistake: Paying a higher rate or package fee for redraw with a small extra-repayment balance.
Why it bites you: A 0.1 percent rate premium on a $500,000 loan is $500 a year. With a $5,000 redraw balance, the feature is a net loss.
Mistake: Assuming redraw works on a fixed-rate loan.
Why it bites you: Extra repayments on fixed loans are capped at $10,000 to $20,000 a year on most products, and the redraw follows the cap. The offset on the variable side is the workaround.
I spent an evening with the redraw terms across four major lenders and the ATO's position on mixed-purpose loans so you don't have to, and the pattern is consistent: the saving is identical to an offset's, and the control is not. I ran the hardship scenario through the redraw facility calculator as well - the freeze costs nothing on paper and everything in practice.
Brent built his buffer in redraw and met the hardship freeze with the money inside the bank's rules. The offset was $200 a year more expensive and available every day of the freeze. Size the buffer where you control the tap; use the redraw for acceleration. The loan is the bank's; the buffer should be yours.
No - a redraw is extra repayments inside the loan accessible on the bank's terms, while an offset is a separate account you control that reduces the charged interest. The interest saving is identical; the control is not.
Yes - redraw access is a contract feature the bank can suspend, including during hardship, and MoneySmart's guidance warns of exactly that. Money in an offset account remains yours and accessible.
Yes - redrawing for personal spending mixes private borrowing into a deductible loan, and the interest on the redrawn portion is not deductible. The offset preserves the loan balance and the deductions.
Extra repayments on fixed loans are capped at $10,000 to $20,000 a year on most products, and the redraw follows the cap. A split loan with a variable portion and offset is the standard workaround.
Many variable-rate loans include free redraw, while others charge a fee per withdrawal or price the feature into a higher rate or package fee. Check the comparison rate, which folds the fees in.
Disclaimer: This information is general in nature and does not constitute financial or legal advice. Always consult a qualified professional for your specific situation.

Financial Chaos Analyst
Ivy Sinclair-Wren is a Financial Chaos Analyst covering investing, AI, wealth psychology, and the emotional consequences of opening finance apps during market crashes. Based in Melbourne, she specializes in demystifying the Australian tax code and helping users navigate the intersection of spreadsheet logic and human irrationality.