Sources suggest that Howard Webb's annual salary is more than £65,000 (Retainer salary + Match fee). Some suggest the salary is around £120,000.
Basic salary of a Premier League Referee ranges from £38,000 to £40,000 depending on the experience. There's also additional match fees which accounts for £1000 a match in Premier League and £500 in Championship. So in a single season Premier League referees can make around £70,000.
In an article from the Daily Mail, Premier League referee Howard Webb has been appointed to take charge of the first ever football match to be played at the Buckingham Palace.