Home Loan Offset Account Calculator

Use this home loan offset account calculator to determine how much you can save on your mortgage interest by setting up an offset account. Simply enter your loan details and see the potential savings.

What is a home loan offset account?

A home loan offset account is a savings account linked to your home loan. The balance in this account is used to offset the principal of your loan, effectively reducing the amount of interest you pay each month.

Offset accounts are particularly beneficial for homeowners who have extra savings they want to apply directly to their mortgage. By offsetting the principal, you can lower your interest burden and potentially reduce your loan term.

Offset accounts are different from regular savings accounts. The money in an offset account is directly applied to your loan balance, not just sitting in a separate account earning interest.

How does it work?

When you set up an offset account, the bank or lender will deduct the account balance from the principal of your home loan. This means your loan amount is effectively reduced, which lowers the interest you owe.

For example, if you have a $300,000 loan and $50,000 in your offset account, your effective loan amount becomes $250,000. This can significantly reduce your monthly interest payments.

The interest savings can be reinvested into the offset account, creating a compounding effect over time. This can help you pay off your loan faster and save on interest charges.

Benefits of an offset account

Lower monthly interest payments
Potentially shorter loan term
Compounding interest savings
No need to make additional loan repayments
Flexible access to savings

Considerations

While offset accounts offer many benefits, there are some things to consider:

You may need to meet certain conditions to set up an offset account
Some lenders may charge fees for maintaining the account
Not all home loans are eligible for offset accounts
You may need to maintain a minimum balance

Formula

The savings from an offset account can be calculated using the following formula:

Monthly Interest Savings = (Loan Amount × Interest Rate) - ((Loan Amount - Offset Amount) × Interest Rate)

Where:

Loan Amount - The original principal of your home loan
Interest Rate - The annual interest rate of your loan
Offset Amount - The current balance in your offset account

This formula calculates the difference in interest payments between your original loan and the reduced loan amount after applying the offset.

Example calculation

Let's look at an example to see how an offset account can save you money.

Scenario	Loan Amount	Interest Rate	Offset Amount	Monthly Interest Savings
Original Loan	$300,000	4.5%	$0	$1,012.50
With Offset	$300,000	4.5%	$50,000	$843.75

In this example, by having $50,000 in an offset account, you save $168.75 per month on interest payments. Over the life of the loan, this can add up to significant savings.

FAQ

What is the difference between an offset account and a regular savings account?: An offset account is linked to your home loan and directly reduces your loan balance, while a regular savings account simply earns interest and doesn't affect your loan.
Can I withdraw money from an offset account?: Yes, you can withdraw money from an offset account, but this will increase your loan balance and potentially reduce your interest savings.
Are there any fees associated with an offset account?: Some lenders may charge fees for maintaining an offset account, so it's important to check with your lender about any potential costs.
Can I have multiple offset accounts?: This depends on your lender. Some lenders allow multiple offset accounts, while others may only allow one.
How do I set up an offset account?: You'll need to contact your lender or bank to set up an offset account. They'll guide you through the process and may have specific requirements.