20AMixing: adjustment of duty.U.K.
[(1)Subsections (2) and (3) apply if—
(a)a relevant substance upon which duty under this Act has been charged is mixed in a pipe-line with another kind of relevant substance upon which such duty has been charged, and
(b)the mixing is approved mixing (see subsection (5)).
(2)If the Commissioners are of the opinion that—
(a)the amount of duty that would be charged on the mixture (if duty were charged at the time of mixing), is greater than
(b)the total amount of duty charged as mentioned in subsection (1)(a),
they may charge under this section a duty of excise on the mixture of an amount equal to the difference.
(3)If the Commissioners are of the opinion that the amount mentioned in subsection (2)(a) is less than the amount mentioned in subsection (2)(b), they may make under this section an allowance of an amount equal to the difference.
(4)Where a charge or allowance is made under this section, any relief or rebate which was permitted or allowed in respect of the charges mentioned in subsection (1)(a) is for the purposes of this Act to be disregarded.
(4A)In this section “relevant substance” means biodiesel, bioethanol, bioblend, bioethanol blend or hydrocarbon oil.
(4B)The cases that fall within subsection (1)(a) include cases where one kind of hydrocarbon oil is mixed with another kind of hydrocarbon oil.]
(5)The Commissioners may make regulations—
(a)enabling them to grant to persons (whether individually or of a specified class) permission to mix [relevant substances (or specified kinds of relevant substances) in a pipe-line], and to withdraw permission for reasonable cause;
(b)enabling permission to be granted subject to conditions and conditions to be varied for reasonable cause,
and in this section “approved mixing” means mixing in accordance with permission under the regulations.
(6)The Commissioners may make regulations—
(a)for prescribing the method of charging the duty under this section;
(b)for determining the form of the allowance under this section (which may be by way of repayment or otherwise) and the time the allowance may be made.
(7)Regulations under this section may make different provision for different circumstances.