Benefit fraud suspects can now be charged under the Fraud Act, which carries a maximum sentence of 10 years in prison, the Crown Prosecution Service said.
In the past, benefit cheats have often been pursued under specific social security legislation which carries a maximum term of seven years.
A financial threshold which prevented benefit fraud cases of less than £20,000 from being sent to crown court will also be abolished, the CPS said.
More top news
More deprived areas of England have received the biggest cuts over the last five years, according to an influential think-tank.
A suspected burglar and domestic abuser who goaded police on their own Facebook page has been taunted back after handing himself in.
Motorists are to be allowed 10 minutes' grace after a parking ticket runs out before they can receive a fine, under new rules.