Gordon Brown says 'extreme' action is needed to restore public trust in politicians
All MPs' receipts for expenses claimed over four years must be independently scrutinised, Gordon Brown has said.
He said "extreme" action was needed but denied having been bumped into the action by David Cameron's decision earlier to restrict claims by Tory MPs.
The prime minister told the BBC: "It is not enough for one or two MPs to make announcements here and there."
He said an independent review of every claim made would help MPs show they were "worthy of public trust".
The development came as it emerged Communities Secretary Hazel Blears is to pay £13,332 over capital gains tax on the sale of her "second home" flat.
And allegations have been made by the Daily Telegraph about money claimed by senior Liberal Democrats.
Liberal Democrat leader Nick Clegg has told his MPs they must hand back any profit they make from the sale of taxpayer-subsidised second homes.
His comments came ahead of the Daily Telegraph reporting details on Lib Dem claims including that Sir Menzies Campbell claimed nearly £10,000 in expenses for a top designer to redecorate his London flat.
While Sir Menzies did not deny the allegations he said the claim was "within the spirit of the rules".
Mr Brown said an independent audit was needed and said, if necessary, it could mean repayments being made and disciplinary action being taken against some MPs.
I've heard absolutely the outrage and the anger the public feel about what has been going on
"This is a radical move but it is necessary," Mr Brown said.
Earlier on Tuesday, Mr Cameron had outlined a series of measures he was demanding of his own MPs and said several senior Tories would repay "excessive" expenses claimed - and warned he would expel from the party those who refused.
After Mr Cameron had announced the new rules for his own MPs, the government asked the cross-party members allowances committee to consider its own proposals for immediate reform.
Asked if he had been forced into a response by Mr Cameron, Mr Brown told BBC political correspondent Nick Robinson: "I have been discussing this for days and we have been looking at this matter for some time. We had hoped to make some progress yesterday and now all parties are prepared to accept this."
But two senior MPs told the BBC he was "misrepresenting" what had been agreed by the committee.
They said the committee agreed only to examine the idea of an independent audit, that there was no "firm or final agreement" and would meet again on Wednesday after seeking advice on whether it was possible.
The BBC's political editor said it was clear the days of claiming for furnishings, food and bathplugs were over and in future only claims for rent, mortgage interest, council tax and utility bills would be allowed.
The cross-party committee also agreed MPs would no longer be able to nominate which property they claimed was their second home.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.