yeah paul mcartney is the richest by a long shot think hes worth over £1 billion now. its all to do with songwriting credits. to rock stars their songs are wot makes them the most money. alot of rock stars have their fingers in other struff like stock and shares, football clubs etc... too.
as for the band im sure jons pretty much the richest by a good shot due to the writing, acting and modelling, richie will probably be 2nd with dave 3rd tho hugh cud be raking in alot from session work and even more if he's gettin writing credits on the songs he's laying down.
taxc evasion should be a rule for all rock stars. kinda like a love for jack daniels

i do a course on music promtion (hence y i know so much shit bout how people make and keep their money in music|) and stings accountant stole between 3 and 8 million pound from him and sting didn't even notice till someone pointed it out to him. if u can lose several million and not even realise then u deserve to get it stole lol