100% Mortgage Offset Account & Redraw Calculator
Calculate how much interest and loan term you save by keeping savings in a 100% mortgage offset account compared to a standard home loan.
Calculate how much interest and loan term you save by keeping savings in a 100% mortgage offset account compared to a standard home loan.
Calculate how much interest and loan term you save by keeping savings in a 100% mortgage offset account compared to a standard home loan. Calculate exact, penny-accurate projections compliant with 2026 ATO • Reserve Bank of Australia (RBA) standards using Calconova's deterministic IEEE-754 (Decimal.js) calculation engine with instant breakdowns.
Mortgage paid off 8 yrs, 4 mos earlier! (Payoff in 21.7 years)
Daily Interest = max(0, Loan Principal - Offset Balance) × (Interest Rate ÷ 365)Because your monthly repayment remains constant, all interest savings directly reduce loan principal faster.
All calculations, amortizations, and scenario projections displayed on this page are strictly for informational and educational purposes. Nothing herein constitutes investment, financial, tax, or legal advice. Actual ATO tax rates, superannuation rules, RBA cash rates, and lender criteria may vary. Calconova explicitly disclaims all liability for any decisions taken based upon these calculations. Consult an ASIC-licensed financial advisor or CPA prior to executing financial commitments.
An offset account is a standard transaction bank account linked directly to your home loan. Every dollar in the offset account offsets your loan principal dollar-for-dollar when daily interest is calculated.
No! Unlike interest earned in a normal savings account which is taxed at your marginal income tax rate, interest saved on a mortgage offset account is completely tax-free.
Yes, 100% offset accounts function just like regular everyday transaction accounts with debit cards, BPAY, and instant transfers.
Calculate property purchase stamp duty across NSW, VIC, QLD, WA, SA, TAS, ACT, and NT with first-home buyer exemptions and foreign buyer surcharges.
Estimate LMI premium costs when borrowing over 80% LVR, and see how much you save using the Federal Government's 5% First Home Guarantee (FHG).
Check state FHOG grant eligibility ($10,000 to $30,000) and calculate tax savings by releasing up to $50,000 from super via the First Home Super Saver scheme.