source: If GST is imposed on any supply made under or in accordance with this agreement, the recipient of the taxable supply must pay to the supplier an additional amount equal to the GST payable on or for the taxable supply subject to the recipient receiving a valid tax invoice in respect of the supply at or before the time of payment.
target: If GST is imposed on any supply made under or in accordance with this agreement, the recipient of the taxable supply must pay to the supplier an additional amount. This amount is equal to the GST  payable on or for the taxable supply subject to the recipient receiving a valid tax invoice. It shall be in respect of the supply at or before the time of payment.
references: If GST is imposed on any supply made under or in accordance with this agreement, the recipient of the taxable supply must pay to the supplier an additional amount. This amount is equal to the GST  payable on or for the taxable supply subject to the recipient receiving a valid tax invoice. It shall be in respect of the supply at or before the time of payment.