This page explains the treatment for tax purposes of incomings or outgoings that are apportioned between the vendor and purchaser of let property. There are examples at PIM2240.
When land is sold, the contract usually requires that receipts
or outgoings for a period are apportioned between vendor and
purchaser. The amount apportioned is often dealt with as an
adjustment to the amount to be paid over on completion of the sale.
It is usually safe to assume that an apportionment of rents
and relevant expenses has been made. Only make enquiries about
apportionments in cases where it appears that material amounts may
be involved. In cases where you do make enquiries it will often be
helpful to ask to see the completion statement. It will not
normally be necessary to make enquiries where the accounts basis
has been used, a reliable agent is involved who is not likely to
omit the adjustment, or you can work out what the figures should be
by knowing the rent and the due payment dates.
ICTA88/S40 requires the following treatment of apportioned amounts for tax purposes.
Subsection (1) applies where the contract requires receipts or outgoings falling due after the time of the contract to be apportioned between vendor and purchaser. The vendor receives part of the incoming, or pays part of the outgoing, as trustee for the purchaser:
See example 1 in PIM2240.
An apportionment may be made of an amount which fell due before the contract date. The vendor did not receive it or pay it as trustee for the purchaser, but the same treatment is given anyway - subsection (2). See example 2 in PIM2240.
The agreement may allocate to the vendor part of an incoming or outgoing becoming due after the expected completion date - subsection (3):
See examples 3 and 4 in PIM2240.
This section is much shorter than ICTA88/S40. The reason is that rental business profits are now computed on the accruals basis and not the entitlement basis, so most of ICTA88/S40 is redundant. Only ICTA88/S40 (3) (b) has been retained. This is an anti-avoidance provision that preserves the capital or revenue nature of any amount due or paid in arrears and apportioned by the buyer to the seller on the sale of land.