Calculating the amount and cost of credit Cash price (induding taxes) of the goods you are buying Provincialloan registration 001 *(] - ,(u/! + 1)) Total netprice Less amount ofyour down payment Assume value and calculation based on that...... Interest rate formula is To calculate a true annual rate you use the following formula: Amount of credit $ s % per annum Plus: cost of credit, calculated at Total deferred balance IU cash price - 10000 provisacial loan registerection - 1000 Amount of downpayment - 1500 your cost of credit 3668o 800 Interest - gt