Extra repayments and redraw facilities explained

The least glamorous sentence in Australian mortgage advice is still the best: if you can pay extra, pay extra. Interest is charged on the balance. A smaller balance is a smaller bill. Everything else — fintech envelopes, cashback, a slightly prettier app — is decoration around that arithmetic.

The product has to cooperate. Variable loans usually do. Fixed loans often cap extra repayments. Redraw then determines whether those extra payments were a gift to your future self or a warehouse for the next holiday. This guide covers extra repayments, redraw, recasting, and the ways households undo their own good work.

How extra repayments change the loan

On a standard principal-and-interest loan, the scheduled repayment is set to clear the balance over the remaining term at the current rate. Pay more, and the surplus hits principal. Because interest is calculated on principal, tomorrow's interest is lower. Keep the repayment where it is and the term shrinks. That is why a household paying an extra $200 a week on a $500,000 loan can knock years off without 'refinancing to a better rate'.

Ask the lender whether extra payments are applied immediately or at the end of the month. Daily application is better. Also ask whether they sit as 'advance payments' (skipping future scheduled payments) or as true principal reductions. You want principal reductions, not a prepaid holiday from discipline.

Redraw: the unlockable piggy bank

Redraw lets you retrieve extra repayments. It is useful when the extra money was a bonus that might need to become a new engine. It is dangerous when it becomes the household ATM. Every redraw is a new loan to yourself at the mortgage rate, secured by the house.

Limits exist: minimum redraw amounts, fees, delays, and blocks if the account is in arrears. Some lenders restrict redraw in the first months after settlement. Internet-banking redraw can look as easy as a transfer; legally it is still increasing the debt.

If you know you will spend the money, an offset is usually cleaner: the funds never leave your sight, and you are less likely to tell yourself you 'already paid the mortgage down'.

Recast and repayment reductions

You can ask some lenders to recalculate the scheduled repayment after a lump sum, lowering the monthly bill and stretching the remaining term back out. That can be rational after a pay cut. It is the opposite of the interest-saving plan. Be explicit about which you want: shorter term or lower repayment. Silence usually means shorter term, which is the better default for most owner-occupiers.

Fixed-rate caps

Fixed portions commonly allow around $10,000 of extra repayments a year, sometimes less, sometimes a single cap over the whole fixed term. The cap is a legal limit. A tax return of $18,000 dropped on a fixed account can create break costs. Direct the surplus to a variable portion, an offset, or a separate savings account until you know.

A worked extra-repayment sketch

$550,000 remaining, 6.0 per cent, 28 years left, scheduled repayment about $3,300 a month. Add $250 a week ($1,083 a month). You are now paying about $4,383. You do not need a new loan. You need a standing transfer. Illustrative calculators (MoneySmart's is public) show term reductions of several years and interest savings in the tens of thousands if rates stayed still — they will not stay still, but the direction of the effect is not a mystery.

When extra repayments are the wrong lever

High-interest unsecured debt should usually die before you overpay a 6 per cent mortgage. If the credit card is at 20 per cent, that is the fire. The mortgage is the slow cooker. Likewise, do not skip superannuation concessional contributions or an emergency fund in order to redraw-proof a loan you will then restress at the first car repair.

Questions to ask

• Are extra repayments applied daily to principal?
• Is there a redraw fee, a minimum, or a hold period?
• Can I recast on request, and how often?
• What is the fixed-rate extra-repayment cap, per year or per term?
• If I refinance, does unused redraw become a cash payout at settlement or simply a lower payout figure?

Paying extra is still the most reliable strategy this desk has. The product features exist to either help you do it or to tempt you to undo it. Choose accordingly.

Fortnightly repayments are not extra repayments, but they help

Switching from monthly to fortnightly — half the monthly amount every two weeks — produces 26 half-payments a year, which is 13 months' worth. That is a calendar trick, not a product feature, and it still works. Combine it with true extra repayments if you can. Do not confuse the trick with redraw: you have not created a warehouse, you have simply paid faster.

Offset plus extra repayments

Some households smash extra into the loan and keep a fat offset. That can be clumsy. Money in the loan via extra repayment may be redrawable; money in offset is already accessible. If you are building a renovation fund you might need in 18 months, offset is usually cleaner. If you are trying to make the debt die and you trust yourselves, extra repayments plus a small emergency offset is a decent split of jobs.

When redraw is frozen

Arrears, hardship flags, a pending refinance, or a lender's 'review' can freeze redraw. Do not park your only emergency fund in redraw if you are already struggling. Cash you cannot touch is not a buffer. ASIC's guidance on hardship is the right next read if redraw is frozen because you missed.

A 90-day extra-repayment experiment

Pick an amount that would sting slightly — $50 a week is enough to learn the habit — and set it as a separate transfer named 'principal'. Do not touch redraw for 90 days unless a true emergency hits (define that: job loss, medical, not a festival). At day 91, look at the balance versus a simple forecast. If you raided redraw for nothing important, you have data: you needed an offset, or you needed a smaller extra amount.

Households who treat extra repayments as a moral identity and then redraw for furniture are not failing at finance. They are using the wrong feature. Move the furniture fund to an offset or a separate saver and keep the extra repayment boring.