Mortgage repayments: weekly, fortnightly or monthly?

When setting up your mortgage, one of the key decisions is how often to make your repayments. The right choice can affect how quickly you pay off your loan, how much interest you could save, and how well your mortgage fits into your household budget.

Here’s what to consider.

Weekly repayments

If you’re paid weekly, matching your mortgage to your income can make managing cashflow easier.

Because interest is calculated daily, making weekly repayments reduces your loan balance more frequently than monthly payments. That means the amount of interest charged is slightly lower over time, though the overall difference compared with monthly payments is generally quite small.

Fortnightly repayments

For many people, fortnightly might feel like a natural fit with budgeting. But how much difference it makes to the interest you pay depends on how the payments are calculated.

• Calculator method: If you use an online lender calculator, it usually takes your total required monthly repayments over a year, then divides it by 26 fortnights (or 52 weeks). This means you’re paying the same total amount, just in smaller, more frequent instalments. The interest savings compared with monthly repayments are usually minimal.
• Half-monthly method: Some lenders instead allow you to pay half of your monthly repayment every fortnight. Because there are 26 fortnights in a year, this adds up to the equivalent of 13 monthly repayments instead of 12. That “extra” repayment helps reduce your loan faster and can save significant interest over time.

Example: On a $500,000 loan at 6% over 30 years, using the half-monthly method could shorten the loan by around three years and save tens of thousands of dollars in interest. (Figures are indicative only and depend on your loan and lender’s repayment structure.)

Monthly repayments

If you’re paid monthly, this option can be convenient and may make budgeting simpler.

The trade-off is that your loan balance only reduces once a month. That means more interest builds up compared with weekly or fortnightly options. Over time, that can mean you pay a bit more interest over the term of the mortgage than if the payments, or principal reductions, were more frequent.

Which is right?

The right repayment frequency depends on your income pattern, your budget, and your goals. More frequent payments can save interest and shorten the life of your loan, but they also mean more regular outgoings to plan for.

Every lender structures repayments slightly differently, so it pays to get advice.

What to do next

Choosing the right repayment structure can save you money, reduce stress, and help you pay off your loan faster. If you’d like to explore how different repayment options could work for you, talk to us — we’re here to help you find the most efficient structure for your situation.

Disclaimer: Please note that the content provided in this article is intended as an overview and as general information only. While care is taken to ensure accuracy and reliability, the information provided is subject to continuous change and may not reflect current developments or address your situation. Before making any decisions based on the information provided in this article, please use your discretion and seek independent guidance.