Four politicians are facing criminal charges because police think their expenses claims were dishonest.
Three MPs from the House of Commons and one Peer from the House of Lords will be charged under the Theft Act.
Elliot Morley, David Chaytor, Jim Devine and Lord Hanningfield have been told to go to court on 11 March.
The MPs said that they haven't done anything wrong and have said they will defend themselves against the charges when they appear in court.
If they're found guilty they could be sent to prison for up to seven years.
Back in May 2009, hundreds of politicians got into trouble over their expenses - money they can get for things that help them do their jobs.
BBC political editor explains expenses
It turned out some MPs had been getting toilets fixed, paying for cleaners and one even took money to get a house for his ducks!
The scandal was big news in politics, and since then lots of MPs have had to pay back money, make apologies to the public and some have decided to quit.