By Philippa Billings, Chief Advice Officer, Otivo
Making extra mortgage repayments feels unambiguously virtuous, like flossing or eating vegetables. And often it is a smart move. But it isn't free of trade-offs, because a dollar locked into your loan is a dollar you can't easily reach again. Whether extra repayments are right for you depends as much on flexibility as on interest saved. Here's the case on both sides.
Quick answer
Extra mortgage repayments reduce your loan principal, which cuts the interest you pay and can shorten your loan term significantly. The main trade-off is access, since money paid directly into a loan can be harder to retrieve than money kept in an offset account. As at July 2026, whether extra repayments suit you depends on your interest rate, goals and need for flexibility.
What do extra mortgage repayments actually do?
They reduce the principal, the amount you owe, ahead of schedule. Because interest is charged on that balance, a smaller principal means less interest, and more of each future repayment then goes towards clearing the loan rather than servicing interest. The result is usually a shorter loan term and a meaningful saving in total interest over the life of the loan. It's a simple mechanism with a powerful long-run effect.
How much difference do they make?
More than the size of the payments suggests, because of when the interest is charged. Mortgage interest is front-loaded, so extra repayments made in the earlier years of a loan save the most, cutting interest for every remaining year. Even modest regular additions can take years off a typical loan. The exact saving depends on your loan size, interest rate and how early you start, but the direction is always the same, less interest and a shorter term.
What's the downside of extra repayments?
Access. Money paid directly into your loan reduces what you owe, but getting it back generally means using a redraw facility, which isn't always as quick or flexible as reaching money in an offset account. If your budget is tight or your emergency buffer is thin, tying up cash in the loan can leave you exposed when an unexpected cost lands. The interest saving is real, but so is the loss of ready access.
Should you make extra repayments or use an offset account?
It's a genuine choice between two ways to reduce interest. Extra repayments cut the principal directly, while an offset account reduces the interest charged without locking the money away, keeping it available if you need it. Many people prefer an offset for the flexibility, others like the discipline of extra repayments. The interest effect can be similar, so it often comes down to how much you value access to the money.
Who might extra repayments suit?
They tend to suit people with a stable income, a solid emergency buffer already in place, and a preference for the certainty of paying down debt. For someone like a household comfortably ahead on their essentials, directing surplus into the loan can be an efficient, low-risk use of it. For those who need every dollar accessible, an offset may fit better. What suits any individual depends on their circumstances.
Frequently asked questions
Is it worth making extra mortgage repayments?
Often yes, because of the interest saved and the shorter loan term, particularly when payments are made early. The main thing to weigh is flexibility, since money in the loan is less accessible than money in an offset account.
Can I access extra mortgage repayments later?
Sometimes, through a redraw facility if your loan has one, but it's generally less flexible than an offset account. Whether and how easily you can access the money depends on your specific loan.
Do extra repayments reduce my loan term or my repayment?
Commonly they reduce the loan term while your regular repayment stays the same, meaning you finish sooner. Some loans let you lower the repayment instead. It depends on how your loan is set up.
Where to from here
Whether to make extra repayments comes down to interest saved against flexibility kept. Otivo, a licensed Australian financial advice platform holding AFSL and Australian Credit Licence No. 485665, offers a debt advice module that helps you find effective ways to pay down debt while covering essentials, based on your debts, income and expenses. It helps you weigh the two sides for your situation.
Sources
- ASIC MoneySmart — extra repayments and offset accounts — moneysmart.gov.au
Disclaimer
The information in this communication is current as at July 2026 and has been prepared by Otivo Pty Ltd ABN 47 602 457 732, AFSL and Australian Credit Licence No. 485665. This content is general information only and has been prepared without taking into account your objectives, financial situation or needs. It is not personal financial or taxation advice and should not be relied on as such. Before acting on any information, you should consider its appropriateness having regard to your personal circumstances. This material must not be reproduced in whole or in part, or posted on any social media platform, without the prior written consent of Otivo Pty Ltd.