The annual list, due to be published this Sunday, charts the changing fortunes of Britain's wealthiest people in the worlds of business and entertainment.
Although personal turmoil led to canceled tours for Winehouse this past year, album sales on the strength of her five Grammy wins have stayed strong for the 24-year-old.
Winehouse, the daughter of a taxi driver, is estimated to be the 10th richest young musician under 30 and is ahead of the other singers in the recent invasion of Brit Belles – Leona Lewis, Natasha Bedingfield and the recently widowed Corinne Bailey Rae – all of whom are valued at $12 million.
All are a long way from the top name on the list, Dhani Harrison, the 29-year-old son of late Beatle George Harrison, who has an estimated $320 million in his pocket.
When it comes to the all-age music list, Spice Girl svengali and American Idol creator Simon Fuller, who launched and stopped legal proceedings against pal Simon Cowell, hears ka-ching to the tune of $900 million.
That's just behind Sir Paul McCartney at $ 1 billion but trailing behind the $2.6 billion wealth of Clive Calder, the former record company boss of Britney Spears.
Miley Cyrus is not far behind Winehouse – she earned $17.5 million last year. For more on the richest teens around, see this week's PEOPLE cover story on newsstands Friday.