Hello, this is in the running for dullest question ever, but here goes.
I've signed a book contract (!) and it's of the usual form where 1/4 paid on signing, 1/4 of advance on delivery etc.
For tax, do I account for the money when it is paid rather than contract signing date? (I am used to being freelance and the invoice date rather than payment date being the key). Does this also apply to foreign sales, which is one payment (but signature date is in one tax year, payment date in the next).
Or is there any useful resource which could help me. I have an accountant, but I think they may be out of their depth.
tia.