Point of Taxation amendment changes timing of tax liability where invoice payment delayed, adds transitional rule for pre-effective invoices. Amendment alters the Point of Taxation Rules so that if payment is not made within three months of the invoice date the tax point is the day after that three month period, and adds a transitional rule: for invoices issued before the amendment but unpaid on its commencement, payment made within six months of invoice fixes the tax point as the payment date, otherwise the tax point is determined as if these amendments do not apply.