Thesimplestmethod of tracking this incidence is to look at, as in the IFS report, the incidence of Stamp Duty and then to add what we have been told by the European Commission.
Budget experts suggest doing a breakdown of where you spend every dime, but thesimplest budget method by far is to remove a significant percentage of your pay in advance (double digits, at least) and deposit it into an account you cannot easily access.