means, where the parties to an agreement in connection with a money lending transaction or a credit transaction or a leasing transaction have agreed that the sum of money payable in connection with the transaction--
| a) | must be paid at a stated or determinable future date, the time that must elapse between the date upon which the transaction was concluded and the date upon which payment of the said sum of money must be made; or |
| b) | must be paid in whole or in part in instalments over a period in the future, the time that must elapse between the date upon which the transaction was concluded and the date upon which the first instalment is payable or the time that must elapse between the dates upon which two consecutive instalments are payable. |