(5)For the purpose of calculating the amount of each instalment of tax payable by an instalment payer under section 90 for the first year of assessment commencing on or after 1 April 2017, the instalment payer may assume that its current estimated tax payable for that year of assessment is equal to the amount of tax that was payable by the instalment payer in the previous year of assessment, increased by an uplift of five percent. A person shall not be required to pay tax by quarterly instalments under section 90 where that person had no tax payable in the previous year of assessment.