Offset Account Savings Calculator

See how much interest and time you save by linking your savings to your mortgage.

Current Loan Balance (AUD)

Interest Rate (% p.a.)

Remaining Loan Term (Years)

Average Offset Account Balance (AUD)

Standard Monthly EMI

Interest Paid (Without)

Total Interest Saved

AUD $0

Over the life of your loan.

Without Offset With Offset

Time Saved 0 years and 0 months saved on your loan term

Interest Saved

Original Term

0 Years

Revised Payoff Time

0 Years

Total Interest Paid (With Offset)

Disclaimer: This tool provides an estimate based on standard Australian amortisation formulas. It assumes your interest rate and offset balance remain constant over the life of the loan. Real-world interest is calculated daily and charged monthly. Fees and charges are not included. This is for illustrative purposes only and does not constitute financial advice.

Offset Account Mortgage Savings Calculator: Reduce Your Loan Term (2026)

💡 Expert Tip (The Tax-Free Advantage): An offset account is almost always better than a high-interest savings account. Why? Because the interest you “earn” in a savings account is considered taxable income by the ATO. However, the interest you **save** using an offset account is not income—it is a reduction in expense. This means if your mortgage rate is 6%, using an offset account is effectively the same as earning a tax-free return of 6%, which is much harder to achieve with traditional bank deposits!

In the Australian property market, an Offset Account is one of the most powerful financial tools available to homeowners. It is essentially a transaction account linked directly to your home loan. Instead of earning interest on your savings, the balance in this account is ‘offset’ against your mortgage principal, meaning you only pay interest on the difference. Our Offset Account Mortgage Savings Calculator helps you visualize how even small amounts of extra cash can shave years off your loan term and save you tens of thousands of dollars in interest.

How Does a Mortgage Offset Work?

Australian banks calculate mortgage interest on a daily basis. When you have a 100% offset account, the bank looks at your loan balance and subtracts your offset balance before calculating that day’s interest. For example, if you have a $500,000 mortgage and $50,000 in your offset account, you only pay interest on $450,000.

Daily Interest Calculation: Because interest is calculated daily, every day your salary sits in your offset account before you pay your bills, you are saving money.
Full vs. Partial Offset: Most premium home loans offer “100% Offset,” meaning every dollar works for you. Some basic loans only offer “Partial Offset,” where only a percentage of your balance is used to reduce interest.
Compound Savings: The interest you save today isn’t added to your loan balance tomorrow. This creates a compounding effect that significantly accelerates your path to being debt-free.

*Disclaimer: While offset accounts provide significant savings, they often come with higher annual package fees or slightly higher interest rates compared to “No-Frill” basic loans. This calculator provides an estimate based on constant figures; actual bank calculations may vary.*

Offset Account vs. Redraw Facility

While both features help you save interest, they function differently under Australian law. A Redraw Facility allows you to make extra repayments directly into your loan and pull them back out if needed. An Offset Account is a separate bank account. For owner-occupiers, the difference is minor. However, for investors, an offset account is vital. If you ever turn your home into an investment property, taking money out of an offset account does not impact the tax deductibility of the loan, whereas taking money out of a redraw facility might.

The Strategy: Using Your Offset as a Hub

Savvy Australian investors use their offset account as their primary “spending hub.” They have their salary paid directly into the offset account and use a credit card for all daily expenses (earning points and keeping their cash in the offset for as long as possible). By paying the credit card balance in full on the due date from the offset account, they maximize the number of days their cash is reducing their mortgage interest.

Frequently Asked Questions (Mortgage Offset Guide)

1. Can I access the money in my offset account whenever I want?

Yes. An offset account works just like a regular transaction account. You get a debit card, you can set up direct debits, and you can withdraw cash at an ATM. The money is yours to use; as long as it sits in the account, it saves you interest.

2. Do offset accounts work with fixed-rate mortgages?

Most Australian banks do not allow 100% offset accounts on fixed-rate loans, or they place a strict cap on how much you can offset. Offset accounts are almost exclusively a feature of variable-rate home loans. Always check your specific loan’s Product Disclosure Statement (PDS).

3. Is there a limit to how much I can keep in my offset?

Technically, you can keep as much as you want. However, once your offset balance equals your remaining mortgage balance, you are effectively paying 0% interest. Any amount above your mortgage balance will not earn you any interest or provide further benefits.

4. Will an offset account lower my monthly repayments?

Usually, no. Your monthly repayment remains the same, but a larger portion of that payment goes toward paying off the **Principal** (the actual debt) instead of the **Interest**. This is how you end up paying off your 30-year loan much faster.

5. Are offset accounts safe?

Yes. Offset accounts are covered by the Australian Government’s Financial Claims Scheme (FCS), which guarantees deposits up to $250,000 per person, per authorized deposit-taking institution (ADI), in the unlikely event that a bank fails.