It's a trivial issue, but one of those that is annoying me. Software provider is unable to explain how they get to the answer that they do, which differs slightly from my own.
Qualifying expenditure incurred during the 12 months ended 31 July 2020. Expenditure of £28,400 was incurred on, say, 31/12/19 and first brought into use on 01/01/20.
My calculations give an allowance of £426 or so, but software is producing £388.
Which, if either, is correct?