Lump sum repayment calculator

How to use the lump sum repayment calculator

1. Set your mortgage baseline

   Enter your Loan Amount (loaded at $400,000), Interest Rate (5.50% default) and Loan Term (up to 30 years).

2. Pick your payment cycle

   Select Monthly, Fortnightly or Weekly under Repayment Frequency so the tool matches your regular repayment schedule.

3. Enter the lump sum

   Type your one-off payment into Lump sum amount (defaults to $30,000) to model a bonus, inheritance or overseas transfer.

4. Choose the payment year

   Select when the payment hits your loan in Starts after (defaults to 5 years into the term).

If you want to keep your cash accessible rather than paying it directly into the loan balance, compare the numbers on our home loan offset calculator.

Under View your results, you'll see your regular Repayments, the Increased Repayments figure for the period your lump sum lands, your total Interest Saved and time saved, plus the Loan Balance Chart comparing both payoff curves.

What the lump sum calculator includes and leaves out

What visa holders and expats should know about lump sums

Many Australian expats and visa holders make bulk payments from bonuses, documented overseas transfers or family gifts. At application, most lenders shade a foreign bonus by 20% for currency plus 20% for policy off the original amount (a A$20,000 bonus counts as A$12,000), yet after settlement every dollar cuts your balance in full.

If you haven't bought yet, adding that cash to your deposit instead of waiting can lift your LVR tier. For instance, a bridging visa holder buying jointly with an Australian citizen or permanent resident partner can borrow up to 95% LVR, while a larger deposit reduces Lenders Mortgage Insurance (LMI).