Free tool
Fortnightly and Weekly Repayment Calculator
Does paying fortnightly really save you money? It depends on how much you pay. Compare standard and accelerated repayments and see the difference.
Your loan
Accelerated fortnightly repayment
$1,797
every fortnight
- Monthly repayment
- $3,593
- Paid each year
- $46,715
- Paid each year if monthly
- $43,121
Compared with paying monthly
Change any number above to your own loan to see how much interest and time you could save.
$148,356
less interest over the loan
- Loan paid off in
- 24 years 6 months
- Time saved
- 5 years 6 months
- Total interest, paying this way
- $545,285
- Total interest, paying monthly
- $693,641
Where the saving comes from. Half your monthly repayment every fortnight adds up to 13 monthly repayments a year instead of 12. Check how your lender works out fortnightly repayments before you switch.
How your loan comes down
What you still owe each year, paying monthly compared with the way you chose.
Compare every option
| Repayment | Paid off in | Total interest | Interest saved |
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Not sure how your lender works out fortnightly repayments, or whether an offset account would do more for you? It is a 15 minute conversation.
Book a free 15 minute callStandard or accelerated, what is the difference?
Standard fortnightly is the repayment your lender works out for a fortnightly loan. Over a year you pay about the same as you would monthly, just split into 26 smaller payments. The saving is small, because each payment brings the balance down a little sooner.
Accelerated fortnightly is half your monthly repayment, paid every fortnight. There are 26 fortnights in a year, so you end up paying the equivalent of 13 monthly repayments instead of 12. That extra repayment goes straight off the loan, which is why the saving is so much bigger.
Weekly works the same way. Standard weekly is your lender’s weekly amount. Accelerated weekly is a quarter of your monthly repayment, every week.
Lenders do this differently. Some set fortnightly repayments at half the monthly amount, others work them out so you pay the same each year as monthly. Ask your lender which one you are on.
How this is calculated
- Repayments are principal and interest at the rate you enter, which stays the same for the whole loan.
- Interest is worked out each repayment period (monthly, fortnightly or weekly). In practice, lenders usually calculate interest daily and charge it monthly, so your real numbers will differ slightly.
- A year is treated as 12 months, 26 fortnights or 52 weeks.
- Fees, rate changes, offset accounts and extra repayments are not included.
General information only. It does not take into account your objectives, financial situation or needs, and is not credit, financial, legal or property advice. Figures are estimates that assume your interest rate never changes and do not include fees or how your lender actually calculates interest and repayments. Talk to me before you rely on any of these numbers. Sklupple Pty Ltd (ACN 676 755 990) trading as KK Talks Finance is a Credit Representative (CR No. 569266) of Australian Finance Group Ltd (ACL 389087). © 2026 KK Talks Finance.