All Topics / Finance / What is the formula used to work out weekly repayments??

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  • Profile photo of ClintoneClintone
    Participant
    @clintone
    Join Date: 2009
    Post Count: 5

    Hi Guys

    Anyone know the formula required to work out weekly repayments when you have the principal, interest rate and loan term?

    Any help is appreciated!!!

    Clinton

    Profile photo of nqinqi
    Member
    @nqi
    Join Date: 2009
    Post Count: 1

    If you're using MS Excel then it's

    =pmt(rate,nper,pv,fv,type)

    rate = interest rate per period
    nper = number of payments
    pv = loan amount
    fv = zero if you are paying off the loan completely
    type = 1 or 0, depending if the payment is at the start or end of each period (it doesn't make much difference to the result)

    hope this helps

    Profile photo of ducksterduckster
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    @duckster
    Join Date: 2004
    Post Count: 1,674

    or you could use the excel template that is downloadable called amortization

    The formula could probably be used in a calculator but you would need a financial calculator and would most likely it woudl have a PMT function similar to the excel function PMT and it would require you to carefully read the calculator's instruction booklet to work out how to input the required formula values.

    The idea of using a mathematical formula over 20 years of calculations would be a tedious event without a financial calculator or Excel. Which can work it out in seconds rather than hours.

    Profile photo of Scott No MatesScott No Mates
    Participant
    @scott-no-mates
    Join Date: 2005
    Post Count: 3,856

    Your other option is to ask your financier who should have those numbers on tap.

    Profile photo of ClintoneClintone
    Participant
    @clintone
    Join Date: 2009
    Post Count: 5

    Thanks for your replies guys. Im a new member and a begginer to investing, Interested to know how most of you work out what your repayments etc vs your incoming rent to qualify potential cashflow?

    Profile photo of Richard TaylorRichard Taylor
    Participant
    @qlds007
    Join Date: 2003
    Post Count: 12,024

    Take say a ballpark interest rate of 5.5%.

    Multiply your loan amount (normally purchase price + costs or say 110% of the purchase price) by 5.5% / 12 to give you the monthly interest payable.

    Take 100% of the Gross rent and subtract say 8% managing agents costs and 1 1/12th of the annual rates body corporate contributions (if applicable), insurance etc.

    Difference between the two will be the approximate shortfall / surplus cash flow for the particular deal.

    This ignores any Depreciation, Building Write off or negaive gearing that maybe available.

    Richard Taylor | Australia's leading private lender

    Profile photo of ClintoneClintone
    Participant
    @clintone
    Join Date: 2009
    Post Count: 5
    Qlds007 wrote:
    Take say a ballpark interest rate of 5.5%.

    Multiply your loan amount (normally purchase price + costs or say 110% of the purchase price) by 5.5% / 12 to give you the monthly interest payable.

    Take 100% of the Gross rent and subtract say 8% managing agents costs and 1 1/12th of the annual rates body corporate contributions (if applicable), insurance etc.

    Difference between the two will be the approximate shortfall / surplus cash flow for the particular deal.

    This ignores any Depreciation, Building Write off or negaive gearing that maybe available.

    Thanks, big help…

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