Commentary on Sections Glossary Overview Sections 548 and 549: Time when additional VAT liability or rebate is incurred, made, accrues etc.
1909.These sections are based on section 159A of CAA 1990. They determine when additional VAT liabilities and rebates are treated as arising.
1910.Section 159A(1) to (4) of CAA 1990 determines when additional VAT liabilities and rebates are treated as arising for the purposes of CAA 1990. It is clear that such rules are necessary to ensure that calculations of allowances and charges reflect the additional VAT liabilities and rebates in the correct chargeable periods.
1911.The legislation, however, provides two different sets of rules to determine the time an additional VAT liability or rebate is treated as arising. One of these sets of rules is applied when determining in which chargeable period a liability or rebate is to be brought into account (or for which chargeable period an allowance or charge is to be made under the 1990 Act). The other set of rules is used in all other circumstances. In particular, it is used when the legislation requires certain conditions to be met at the time when the additional VAT liability or rebate arises.
1912.However, there are instances in which the same terminology is used with two different meanings in the same sentence. This Act has removed this obstacle to the understanding of the rules and uses two different labels to refer to the two different sets of rules.
1913.The time, determined in CAA 1990 by section 159A(1) and (2), is now referred to as the time when the additional VAT liability is incurred or the additional VAT rebate is made. This is the meaning that applies in all cases except when determining the chargeable period in which a liability or rebate is to be brought into account (or for which chargeable period an allowance or charge is to be made under the 1990 Act). This is dealt with in section 548.
1914.The time, determined in CAA 1990 by section 159A(3) and (4), is now referred to as the time when the additional VAT liability or rebate accrues. This is dealt with in section 549. This time will generally be later than the time determined in section 548.
1915.One advantage of using the later time in the legislation is to ensure that the appropriate capital allowances calculations do not generally need to be made until after the adjustment has been calculated for VAT purposes.
1916.Section 159A(4) of CAA 1990 may appear to determine only the chargeable period in which the additional VAT liability or rebate arises (or in the language of the new Act “accrues”). But CAA 1990 requires in various provisions the time (rather than just the chargeable period) in which the additional VAT liability or rebate accrues. This Act provides this. See Note 70 in Annex 2.