Extra Home Loan Repayments Calculator

How much could you potentially save on your mortgage by boosting your regular payments? Try our extra repayments calculator to find out. Enter your current loan details – then give your repayment amount a boost. You can also nominate when to start your increased repayment to take account of future pay rises or reduced expenses down the track.

Please note: The calculations do not take into account all fees and charges. The results provided by this calculator are an estimate only, and should not be relied on for the purpose of making a decision in relation to a loan. Interest rates and other costs can change over time, affecting the total cost of the loan. Consider whether you need financial advice from a qualified adviser. Interest rates and other costs can change over time, affecting the total cost of the loan. Check your mortgage contract to see whether you can charge your repayments without incurring costs.

Extra repayments are made after the establishment of the loan, and are made at the same time as you continue to pay your regular, required monthly repayments.

The CANSTAR Extra Repayments Calculator allows you to “try out” many different calculations about additional repayments you could make on a home loan. Read on to find out how your loan term and the interest you pay are affected by making extra repayments of different sizes.

How we made our calculations

The calculations we’ve made are based on inputting the following data into our calculator, except where we have specified otherwise.

  • Loan Amount: $350,000
  • Repayment Frequency: Monthly
  • Interest Rate: 89% (average standard variable interest rate on our database at time of writing)
  • Loan Term: 25 years
  • Extra repayment (monthly): $200/month
  • Extra repayments start after: 1 year
  • Minimum monthly repayments based on these figures: $2,024/month
  • Increased monthly repayments based on these figures: $2,224/month
  • Interest saved over loan term by extra repayments: $42,184
  • Time saved by extra repayments: 3 years 8 months

According to CANSTAR’s comprehensive research database, the majority of Australians (60%) are looking for a loan amount of between $350,000 and $749,000 – so we’ve based our home loan calculations for this article on a loan of $350,000. You can enter the specific loan amount you are looking for in our home loan calculators and our comparison of home loans on the market.

Not every home loan product allows you to make additional repayments. Make sure you check the features of a home loan, including its facility for additional repayments (a.k.a. extra repayments), before signing up for the long haul.

Interest Rate

Changing the interest rate on your loan makes a massive difference to your monthly repayments. This is why it’s so important to compare your options on the CANSTAR website and find a great value home loan for your situation.

The extra repayments calculator shows that the higher the interest rate you pay, the more you will save in interest by making extra repayments. For example, at the maximum variable rate available on our database at the time of writing (for a loan of $350,000 on the terms listed above), you would save $61,046 in interest over the life of your loan by making extra repayments of just $200/month.

Interest Rate Min Repayment Increased Repayment Interest saved

by extra

repayments

3.85%

(min variable rate)

$1,819/month $2,019/month $30,566
4.89%

(average variable rate)

$2,024/month $2,224/month $42,184
6.31%

(max variable rate)

$2,322/month $2,522/month $61,046

Indicative calculations only. Use the calculator to look at how much you might save.

Don’t forget the other costs

We would be remiss if we didn’t remind you that there is more to the cost of a home loan than the interest rate the institution charges. Remember to also look at the comparison rate, ongoing fee, and up-front fee listed when you’re comparing home loans using our comparison tables.

When to start making extra repayments

The sooner you start making extra repayments to your home loan, the more you will save in interest, and the quicker you can repay your loan.

For example, with a loan term of 25 years, making extra repayments after just 5 years means you could save yourself $27,000 in interest and over 2 years off your loan term. In contrast, starting extra repayments after 10 years might save you just $14,000 in interest and less than 2 years off your loan term.

Extra repayments

start after

Interest saved

over loan term

Time to repay Time saved
Immediately

(0 years)

$46,355 21-22 years 3 years 11 months
1 year $42,184 21-22 years 3 years 8 months
2 years $38,252 21-22 years 3 years 6 months
3 years $34,552 21-22 years 3 years 3 months
4 years $31,078 21-22 years 3 years
5 years $27,826 22-22 years 2 years 10 months
10 years $14,656 23-24 years 1 year 10 months
15 years $6,093 23-24 years 1 year 1 month
20 years $1,424 24-25 years 6 months

Indicative calculations only. Use the calculator to look at how much you might save.

Size of extra repayments

Making larger extra repayments will obviously make more of a difference to helping you pay less interest and repay your loan faster. You can use our calculator to work out how different sizes of extra repayment could help your loan.

The below calculations are based on a $350,000 over a 25-year loan term, and are provided solely as an example.

This table is not intended to be any form of recommendation about what size of repayments you should make. Please consider your own personal financial situation and seek financial advice before making any decisions.

Extra repayments Interest saved

over loan term

Time saved

off loan term

$100/month $23,251 2 years
$200/month $42,184 3 years 8 months
$300/month $57,937 5 years 2 months
$400/month $71,271 6 years 4 months
$500/month $82,719 7 years 5 months

Indicative calculations only. Use the calculator to look at how much you might save.

Home loan calculators to help you work out your financial position

Use CANSTAR’s home loan calculators when you’re doing your sums about how much you can afford to borrow in a home loan: