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Fortnightly Repayment Calculator

Paying half the monthly repayment every fortnight adds up to one extra monthly repayment a year. See what that saves.

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Interest saved

$148,872

Paying half the monthly repayment every fortnight clears the loan 5 years 6 months sooner.

Monthly repayment
$3,597.30
Fortnightly repayment
$1,798.65
Weekly repayment
$899.33
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Estimate only, based on the figures entered and the assumptions listed below. It is not a quote, an offer of credit or personal advice.

Loan balance over time

What you would still owe at the end of each year paying monthly, and paying half that amount every fortnight.

  • Monthly
  • Half monthly, fortnightly

Monthly ends at $0. Half monthly, fortnightly ends at $0.

Show the figures as a table
Loan balance at the end of each year, paying monthly and paying half the monthly repayment fortnightly
PointMonthlyHalf monthly, fortnightly
Start$600,000$600,000
End of year 1$592,632$588,919
End of year 2$584,809$577,153
End of year 3$576,504$564,661
End of year 4$567,687$551,397
End of year 5$558,326$537,314
End of year 6$548,388$522,361
End of year 7$537,836$506,484
End of year 8$526,634$489,627
End of year 9$514,741$471,729
End of year 10$502,114$452,725
End of year 11$488,709$432,547
End of year 12$474,477$411,124
End of year 13$459,367$388,377
End of year 14$443,325$364,225
End of year 15$426,293$338,582
End of year 16$408,211$311,354
End of year 17$389,014$282,445
End of year 18$368,633$251,751
End of year 19$346,994$219,161
End of year 20$324,022$184,558
End of year 21$299,632$147,817
End of year 22$273,738$108,808
End of year 23$246,246$67,389
End of year 24$217,060$23,412
End of year 25$186,073$0
End of year 26$153,174
End of year 27$118,247
End of year 28$81,165
End of year 29$41,797
End of year 30$0

Monthly, fortnightly and weekly

The fortnightly repayment is half the monthly one and the weekly repayment a quarter of it, each kept up until the loan is cleared.

Repayment, time to repay, total interest and savings for monthly, fortnightly and weekly repayments
MeasureMonthlyFortnightlyWeekly
Repayment$3,597.30$1,798.65$899.33
Time to repay30 years24 years 6 months24 years 6 months
Total interest$695,029$546,157$545,497
Interest saved$0$148,872$149,532
Time savedNone5 years 6 months5 years 6 months

How this calculator works

There are 26 fortnights in a year but only 12 months, so paying half the monthly amount every fortnight makes 13 monthly repayments a year instead of 12. Paying a quarter every week does the same.

The extra repayment comes off the principal, which is why the loan finishes years early on the same budget.

Assumptions

  • The fortnightly repayment is half the monthly repayment, and the weekly repayment a quarter of it.
  • Interest is charged at each repayment frequency: the annual rate divided by 12, 26 or 52. A year is taken as 52 weeks or 26 fortnights.
  • The interest rate stays the same for the whole term.
  • Repayments are principal and interest, made at the end of each period.

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