The instalment rate calculation is: (Estimated (notional) tax ÷ instalment income) × 100.
An instalment sale agreement between you and a credit provider allows you to buy a vehicle or asset using the principal debt, which you repay by means of regular instalments over an agreed period, with fees and interest.
An installment contract is a single contract that is completed by a series of performances –such as payments, performances of a service, or delivery of goods–rather than being performed all at one time. Installment contracts can provide that installments are to be performed by either one or both parties .