A report by the Commons public accounts committee found that the Queen's advisers were failing to control her finances and her courtiers have been advised to take money-saving tips from the Treasury, The Telegraph reported.
MPs said her advisers had overspent to such an extent that her reserve fund had fallen from 35 million pounds in 2001 to just 1 million pounds today.
The Royal household had made efficiency savings of just 5 per cent over the past five years compared with government departments, that are cutting their budgets by up to a third.
The 87-year-old Queen's household finances are at a "historic low" even as the royal palaces were "crumbling" and in urgent need of repair, the report said.
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Margaret Hodge, the Labour chairman of the committee, was quoted by the daily as saying: "We believe that the Treasury has a duty to be actively involved in reviewing the household's financial planning and management - and it has failed to do so."
Buckingham Palace and Windsor Castle are reported to be in urgent need of repair.
"The household must get a much firmer grip on how it plans to address its maintenance backlog. It has not even costed the repair works needed to bring the estate back to an acceptable condition. Again, the Treasury has an oversight role here," Hodge said.
In April 2012 the Sovereign Grant replaced the old way of funding the Royal family through the Civil List and various government grants.
The Sovereign Grant represents 15 per cent of the net surplus income of the Crown Estate, land holdings that generate money for the Treasury.
He said repairing the royal palaces was a "significant financial priority" and that the Royal household had almost doubled its income to 11.6 million pounds since 2007. The Queen receives 31 million pouns a year from taxpayers.
In the report, the PAC suggests that the Royals need to both cut their costs and increase their income. It points out that last year the Royal Household's gas consumption rose by 14 per cent and the waste it generated by 9 per cent.