Your loan & savings
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Loan balance
Interest rate
Loan term
WHAT YOU'D PARK
Amount kept in offset / RC
The balance you typically keep sitting there — savings, or your everyday cashflow.
KEEPING $40,000 PARKED
Interest saved
$163,139
Time saved
4 yrs 6 mo
In year one alone that's about $2,400 of interest you don't pay — and your $40,000 stays available the whole time.
The comparison
Interest — normal loan$578,674
Interest — with $40,000 offset$415,535
Paid off in25 yrs 6 mo vs 30 yrs
You keep$163,139
Offset vs revolving credit
Offset links a savings account to your loan — the balance offsets what you're charged interest on, and stays fully liquid. Revolving credit is a large overdraft-style facility: your pay lands in it and expenses come out, so every dollar sitting there reduces interest day to day. Same saving mechanism; revolving credit rewards discipline (spend it and the benefit vanishes). Not every lender offers both, and offset facilities sometimes carry a small fee — an adviser can tell you what's available and whether it beats just fixing sharper.
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