A person does not need to bring a disposal value to account for
an asset if no PMAs have been claimed on the qualifying expenditure
on it.
There is one exception to this:
Example Sam and Dave are connected. They are both musicians. Sam buys an electric guitar for £15,000 and brings it into use for his business. He decides to get a better one and so he sells the electric guitar to Dave for £7,000. Dave can claim PMAs on the guitar and so Sam's disposal value is £7,000. Dave then decides to change to an acoustic guitar and so he does not add the expenditure to his pool and sells the electric guitar for £12,000. Dave has to bring a disposal value of £12,000 to account and he can treat the £7,000 as qualifying expenditure. The guitar was bought by Sam for £15,000 and sold by Dave for £12,000 - a net loss of £3,000, which is the overall result. Sam has expenditure £15,000 and disposal proceeds £7,000 while Dave has expenditure of £7,000 and proceeds £12,000.