Part 2

Plant and machinery allowances
Chapter 5

Allowances and charges

Annual investment allowance

Operation of annual investment allowance where restrictions apply
51K
1
This section applies where because of section 51B, 51C, 51D, 51E or 51H a person is (or persons between them are) entitled to a single annual investment allowance in respect of relevant AIA qualifying expenditure.
2
If the relevant AIA qualifying expenditure is less than or equal to the maximum allowance, the person is (or the persons between them are) entitled to an annual investment allowance in respect of all the relevant AIA qualifying expenditure.
3
If the relevant AIA qualifying expenditure is more than the maximum allowance, the person is (or the persons between them are) entitled to an annual investment allowance in respect of so much of the relevant AIA qualifying expenditure as does not exceed the maximum allowance.
4
The maximum allowance is the amount for the time being specified in section 51A(5); but this is subject to sections 51M and 51N (which provide that in certain cases an additional amount of annual investment allowance may be available).
5
The person or persons may claim an annual investment allowance in respect of all the relevant AIA qualifying expenditure in respect of which the person is (or the persons between them are) entitled to an allowance, or in respect of only some of it.
6
The amount of the annual investment allowance allocated to relevant AIA qualifying expenditure incurred in a chargeable period must not exceed the amount of the annual investment allowance to which a person would be entitled in respect of that expenditure under section 51A(5) and (6) if section 51B, 51C, 51D, 51E or 51H did not apply.
Pt. 2 modified (24.2.2003) by Proceeds of Crime Act 2002 (c. 29), s. 458(1), Sch. 10 para. 12 (with Sch. 10 para. 17(1)); S.I. 2003/120, art. 2, Sch. (with arts. 3 4) (as amended (20.2.2003) by S.I. 2003/333, art. 14)
S. 45H(2) modified (with effect in accordance with s. 167 of the amending Act) by Finance Act 2003 (c. 14) , Sch. 30 para. 7
Pt. 2 restricted (5.10.2004) by Energy Act 2004 (c. 20) , s. 198(2) , Sch. 4 para. 4 ; S.I. 2004/2575 , art. 2(1) , Sch. 1
Pt. 2 modified (5.10.2004) by Energy Act 2004 (c. 20) , s. 198(2) , Sch. 9 paras. 9(2), 21(2) (with s. 38(2)); S.I. 2004/2575, art. 2(1) , Sch. 1
Pt. 2 restricted (5.10.2004) by Energy Act 2004 (c. 20) , s. 198(2) , Sch. 9 para. 10 (with s. 38(2) ); S.I. 2004/2575 , art. 2(1) , Sch. 1
Pt. 2 modified (5.10.2004) by Energy Act 2004 (c. 20) , s. 198(2) , Sch. 9 para. 21(2) (with s. 38(2) ); S.I. 2004/2575 , art. 2(1) , Sch. 1
Pt. 2 restricted (5.10.2004) by Energy Act 2004 (c. 20) , s. 198(2) , Sch. 9 paras. 10, 22 (with s. 38(2) ); S.I. 2004/2575 , art. 2(1) , Sch. 1
Ss. 51A-51N and cross-heading inserted (with effect in accordance with Sch. 24 para. 23 to the amending Act) by Finance Act 2008 (c. 9), Sch. 24 para. 3
Pt. 2 modified (22.7.2008) by Crossrail Act 2008 (c. 18), Sch. 13 para. 19
Pt. 2 modified (22.7.2008) by Crossrail Act 2008 (c. 18), Sch. 13 para. 35
Pt. 2 modified (22.7.2008) by Crossrail Act 2008 (c. 18), Sch. 13 paras. 36, 37
Pt. 2 modified (21.7.2009) by Finance Act 2009 (c. 10), s. 24
Pt. 2 modified (17.7.2013) by Finance Act 2013 (c. 29), s. 73(7)-(11) (with s. 73(6))
Pt. 2 modified (10.6.2021) by Finance Act 2021 (c. 26), s. 9(1)(a)
Pt. 2 modified (11.7.2023) by Finance (No. 2) Act 2023 (c. 30), s. 7