Does an offset account reduce your repayments?

Imagine a $500,000 loan, a 6% annual interest rate and a $3,000 repayment. To isolate the offset effect, this example uses annual interest divided by 12 and holds balances unchanged during the month. A lender’s daily calculation will differ.

The offset has not put an extra $250 into the household’s monthly spending budget here. It has allowed an extra $250 of the repayment to go towards the principal.

That distinction matters when entering savings into a calculator. Adding this $250 again as cash saved would count the benefit twice.

Macquarie’s published terms, for example, say principal-and-interest repayments remain due even when the linked loan is fully offset. That is an example of one lender’s treatment, not a promise about every product.

A rate change, loan variation or recalculation can change the repayment independently of your offset balance. The amount on your loan statement is the relevant starting point for checking a payment estimate.

During an interest-only period, the scheduled payment covers interest rather than paying down principal. A qualifying offset can reduce that interest charge. Without additional principal payments, the debt itself need not fall.

Sidelo’s interest-only toggle models a chosen period, then switches to principal and interest. Its automatic repayment is recalculated at that point using the remaining loan balance, rate and term. A manual repayment stays at the amount entered after the switch.

A lower payment during the interest-only period does not establish a lower total cost over the life of the loan. The remaining principal must still be dealt with.

Read “interest saved”, “loan balance” and “repayment” as separate measures. A projection can show less total interest and an earlier payoff while the regular principal-and-interest payment stays unchanged.

The methodology page explains payment frequencies and rate changes. For the point where the offset covers the whole loan, see fully offset versus paid off.