Money saving expert Martin Lewis said everyone who has moved house since 1993 could be owed money in the form of overpaid council tax.
An investigation by MoneySavingExpert.com revealed more than £230million sitting unclaimed in 1.7million closed or inactive council tax accounts across England, Scotland and Wales.
Martin Lewis founder of the consumer website, said: "Councils are sitting on a staggering amount of money, at least £230million spread across 1.7 million accounts, which works out at an average of well over £100 sitting in each closed account.
