For the purposes of this Act the value of any supply of goods or services shall, except as otherwise provided by or under this Act, be determined in accordance with this section and Schedule 6, and for those purposes subsections (2) to (4) below have effect subject to that Schedule.

If the supply is for a consideration in money its value shall be taken to be such amount as, with the addition of the VAT chargeable, is equal to the consideration.

If the supply is for a consideration not consisting or not wholly consisting of money, its value shall be taken to be such amount in money as, with the addition of the VAT chargeable, is equivalent to the consideration.

Where a supply of any goods or services is not the only matter to which a consideration in money relates, the supply shall be deemed to be for such part of the consideration as is properly attributable to it.

For the purposes of this Act the open market value of a supply of goods or services shall be taken to be the amount that would fall to be taken as its value under subsection (2) above if the supply were for such consideration in money as would be payable by a person standing in no such relationship with any person as would affect that consideration.