Weekly vs Fortnightly vs Monthly: How Repayment Frequency Impacts Interest Savings

A man and a woman in a discussion while reading documents, home buyers discussing which repayment schedule to follow for their loan

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Key Takeaways

When it comes to managing your home loan in Australia, the frequency of your mortgage repayments, be it weekly, fortnightly, or monthly, can significantly influence the total interest paid over the life of the loan. Understanding how repayment frequency affects your mortgage can help you make informed decisions that align with your financial goals.

Understanding Repayment Frequency

Repayment frequency refers to how often you make payments towards your home loan. The three common options for mortgage payment schedules are:

  • Weekly repayments: Payments made every week.

  • Fortnightly repayments: Payments made every two weeks.

  • Monthly repayments: Payments made once a month.

Each repayment schedule has its own implications on the total interest paid and the time it takes to pay off the loan.

How Repayment Frequency Affects Interest Savings

In Australia, most home loans calculate interest on a daily basis. This means the more frequently you make repayments, the quicker the principal balance reduces, leading to less interest accruing over time.

For instance, if you switch from monthly to fortnightly repayments, you’re effectively making an extra repayment each year. Over a 30-year loan term, this can lead to substantial interest savings and a reduction in the loan term.

For example, on a $500,000 loan at a 6.5% interest rate over 30 years, switching from monthly to fortnightly repayments can save approximately $146,869 in interest.

Weekly repayments offer the most frequent reduction in principal. While the difference in interest savings between weekly and fortnightly repayments may seem minimal, the cumulative effect over time can be significant.

How Does Repayment Frequency Affect the Length of My Loan?

Repayment frequency has a direct impact on how quickly you pay off your home loan. By choosing a more frequent repayment schedule, such as weekly or fortnightly, you can reduce the length of your loan significantly compared to making monthly repayments.

The main way repayment frequency shortens your loan term is by reducing your loan’s principal more regularly. Since most Australian mortgages calculate interest daily, the sooner you lower the principal, the less interest you’ll accrue. With weekly or fortnightly repayments, you’re making smaller but more frequent contributions to your loan, which collectively add up to faster debt reduction.

 

A common method used by lenders when setting up fortnightly or weekly repayments is to divide your monthly repayment into two or four equal parts. Because there are 26 fortnights (or 52 weeks) in a year, this results in the equivalent of 13 monthly repayments annually, rather than 12. This “extra” annual payment reduces your loan principal faster, effectively shortening your loan term without requiring large lump-sum payments.

Repayment Frequency Impact: An Example

To illustrate the impact of different repayment frequencies, consider the following example:

Let’s say you have a $500,000 loan over 30 years with a 6.5% interest rate:

Repayment FrequencyRepaymentsTotal Interest PaidLoan Term Reduction
Monthly$3160.34$637,722
Fortnightly$1580.17$490,8535 years 11 months
Weekly$790.09$490,2355 years 11 months

As shown, switching from monthly to fortnightly or weekly repayments can lead to substantial interest savings and a significant reduction in the loan term.

A hand stacking coins in ascending order, concept photo for interest savings from switching repayment schedule

Aligning Cash Flow With Repayment Frequency

While increasing repayment frequency can lead to interest savings, it’s essential to consider your financial situation before making a change. Ensure that the chosen repayment frequency aligns with your income schedule to avoid financial strain. You can use our budget planner to help you determine how loan repayments fit in with your cash flow.

Strategies for Choosing the Right Repayment Schedule

To determine the most suitable repayment schedule for your circumstances:

  1. Assess Your Budget: Review your income and expenses to ensure you can comfortably meet the repayment schedule.
  2. Consult with an Expert: Discuss the available options with an expert broker like Dark Horse Financial to understand any potential fees or restrictions.
  3. Use Online Calculators: Utilise online mortgage calculators to compare the impact of different repayment frequencies on your loan.
  4. Use a Budget Planner: Determine what repayment schedule fits your cash flow and budget using our budget planner. Indicate your income, expenses, loans, insurance, and other details and see your annual surplus, which you can use to pay down your loan further.

What Repayment Schedule Reduces Interest the Fastest?

The repayment schedule that reduces interest the fastest is weekly repayments, followed closely by fortnightly repayments. Both options allow you to pay down your loan more frequently than monthly repayments, leading to faster principal reduction and less interest accruing over time.

Weekly vs Fortnightly vs Monthly

  • Weekly repayments allow you to reduce the principal every 7 days. Over a year, this consistent and frequent repayment schedule compounds the interest savings.

  • Fortnightly repayments are also effective, particularly when you’re paying half the monthly amount every two weeks. This results in the equivalent of 13 full monthly repayments each year instead of 12, which can shorten a 30-year loan by up to 5–6 years.

  • Monthly repayments, while common, give interest more time to accrue between payments and don’t include that extra annual repayment that comes with fortnightly and weekly options.
A man using his laptop while looking at a document, a home buyer deciding on what repayment schedule to choose

Should I Choose Weekly, Fortnightly, or Monthly Repayments?

Choosing between weekly vs fortnightly vs monthly repayments depends on your financial goals, income frequency, and budgeting preferences. If your goal is to pay less interest and pay off your loan sooner, more frequent repayments can be a smart strategy.

If your priority is reducing interest and paying off your home loan faster, weekly or fortnightly repayments generally outperform monthly ones. However, the best repayment frequency for you will also depend on how your income is structured and what feels most manageable in your budget. Most importantly, consistency matters. Choosing a frequency that you can stick to comfortably over the long term will ultimately serve you best.

How to Maximise Interest Savings

Changing your repayment frequency to weekly or fortnightly can reduce the total interest you pay over the life of the loan. Doing this together with other strategies can further reduce the interest you pay. Here’s what you can do:

  • Use an Offset Account: Direct all your income to a linked offset account to increase your interest savings.
  • Use an Interest-Free Credit Card for Expenses: While your income sits within your offset account, use an interest-free credit card for your expenses. Don’t forget to pay what you borrowed before the interest-free period ends to avoid charges. This approach maximises the time and amount of your income that offsets your loan repayments.

More Questions

How do weekly repayments save money on home loans?

Weekly repayments reduce your loan principal more frequently, which means less interest accrues between payments. Because most Australian home loans calculate interest daily, repaying weekly cuts down the total interest over the life of the loan.

Is fortnightly repayment better than monthly repayments?

Yes, fortnightly repayments are generally better than monthly repayments when set up correctly. By paying half the monthly amount every two weeks, you end up making the equivalent of 13 monthly repayments per year, helping to reduce your loan term and total interest paid.

What are the benefits of weekly repayments on home loans?

Weekly repayments can help you pay off your home loan faster and reduce interest costs by lowering the principal more often. They can also align more naturally with weekly income schedules, improving cash flow management and budgeting.

To Sum It Up

Choosing the appropriate repayment frequency is an important decision in managing your home loan. While weekly and fortnightly repayments can lead to significant interest savings and a shorter loan term, it’s essential to consider your financial situation and consult with your lender before making changes. By aligning your repayment schedule with your financial capabilities, you can effectively manage your mortgage and work towards achieving your homeownership goals.

Get The Right Loan

For personalised advice tailored to your circumstances, consider consulting with a mortgage broker like Dark Horse Financial. We can provide insights into the best repayment strategies to suit your objectives.

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