bigbox.tools
Report label: Used as the filename and heading when exporting to PDF

Loan Details

20.0% of home price
Reduces term & interest paid
Monthly Payment
Total Interest
Total Cost
LVR (Loan-to-Value)
LMI (Lender's Mortgage Insurance) protects the lender if you default. Required when LVR > 80%.
Scheduled Payoff
Based on loan term only — no extra repayments or offset applied.

Payment Breakdown

Principal Interest

Offset Account

Added to offset each month
100% = full offset (most common)
How offset accounts work & key considerations
  • Offset reduces interest, not repayments. Your monthly payment stays the same, but less of it is consumed by interest — so more goes to principal, paying the loan off faster.
  • Only works up to your remaining loan balance. Once your offset balance equals or exceeds your outstanding loan, interest drops to zero. At that point you've effectively paid the loan off — consider redrawing or paying it out in full.
  • The benefit is non-linear and front-loaded. $50,000 in offset at year 1 saves far more than $50,000 at year 20, because the interest saving compounds over a longer remaining term. Get money into the offset as early as possible.
  • Some lenders offer partial offset only. For example, only 40–60% of your offset balance may count toward reducing interest. Check your loan terms and adjust the Offset Percentage above accordingly.

Rate Comparison (if rates rise or fall)

Current rate Alt rate Difference
Monthly Payment
Total Interest
Total Cost

Amortization Schedule

# Payment Principal Interest Balance
Year Paid Principal Interest Balance