Former British Prime Minister Liz Truss is entitled to up to £115,000 a year for the rest of her life through Britain’s Public Duty Cost Allowance, despite being in office for 45 days.

Truss currently holds the title for Britain’s shortest serving prime minister, replacing George Canning, who was in office for 119 days before passing away.

She announced her resignation today (October 20) during a statement outside Downing Street, London.

The allowance was introduced in 1991 following Margaret Thatcher’s resignation and is designed to cover the political expenses of former prime ministers.

All former prime ministers can receive up to £115,000 a year, a value set in 2011 that will remain until the latest 2023.

The Cabinet Office says: “The costs are a reimbursement of incurred expenses for necessary office costs and secretarial costs arising from their special position in public life.

“The allowance is not paid to support private or parliamentary duties.”

But, the allowance can only be given if the former prime minister continues to serve parliament. Former ministers are also not eligible if they are the leader of the opposition party.

In addition to the six-figure public duty cost allowance, Truss will receive her basis Commons salary of £84,144. All outgoing PMs are also able to claim ministerial severance pay of £18,860.

If she claims the allowance, Truss will be among other former PMs such as Boris Johnson, Tony Blair, David Cameron, and Theresa May.

Blair reportedly claimed more than £1 million in 10 years since leaving the office in 2007. David Cameron also claimed £113,423 in 2020-21 and slightly less, at £111,457, in 2019-2020.