How does my interest rate impact my repayments?

Perhaps the most influential factor on a person’s home loan repayments is their interest rate. It determines how much interest is charged on each dollar borrowed

And it can have a big impact on the size of a person’s mortgage repayments.


Take a look at how a single percentage point can make a notable difference to the repayments on a 30 year, $400,000 loan @ 6.39% interest:

Loan Amount
Annual Interest Rate
Term (Years)
Annual Interest RateMonthly InstalmentDifference
5.39%$8,273
-$943
5.64%$8,505
-$712
5.89%$8,739
-$477
6.14%$8,977
-$240
6.39%$9,217
$0
6.64%$9,459
$243
6.89%$9,704
$488
7.14%$9,952
$736