Extra mortgage repayments: build a sustainable plan

Small extra repayments can reduce principal sooner, but a useful plan must survive ordinary life. Start with a repeatable surplus rather than an amount that leaves no room for repairs, illness or irregular bills.

Check the contract before sending money

Fixed loans may limit extra payments or charge for repayments beyond an allowance. Ask your lender about the rules for your particular loan, including how the allowance is measured and whether earlier extra payments count. Do not assume a friend's bank offers the same conditions.

Compare the annual total

Changing payment frequency alone does not always increase the amount repaid. For illustration, $2,000 paid monthly totals $24,000 a year. Paying $1,000 every fortnight totals $26,000 over 26 payments. That example involves an extra $2,000, not just a different calendar. Confirm the actual schedule your bank proposes.

Give lump sums a job

Before paying in a bonus, set aside known near-term costs and consider other debt obligations. Ask how a lump sum affects your remaining term and required payments. Money paid into a standard loan may not be available again without a new approval; redraw and offset features have their own conditions.

Review progress without overcommitting

• Set an affordable extra amount and check the relevant allowance.
• Keep a separate buffer for genuine emergencies.
• Compare balances periodically against the original schedule.
• Revisit the plan after income or household changes.

A refix review can be a useful point to discuss repayment settings. Read about offset and revolving credit if access to cash is an important part of the decision. No particular saving is guaranteed; results depend on the loan and payments actually made.