WASHINGTON — Tax fraud appears to be a popular pastime in the nation's prisons, but the Internal Revenue Service is catching on.
The IRS detected more than 173,000 fraudulent tax returns from prison inmates last year, many of them using stolen identities and other false information in an attempt to get tax refunds. That's more than twice the number of fraudulent returns detected from inmates in 2010, according to a report Thursday by the Treasury Department's inspector general for tax administration.
In all, the IRS says it stopped inmates from illegally claiming $2.5 billion in tax refunds in the 2012 budget year. About $1.1 billion was claimed by just two inmates.
The report credits the IRS and prison officials with stepping up enforcement and sharing more information, but it says more can be done to stop tax fraud among inmates.
Refund fraud committed by prisoners remains a significant problem for tax administration, said J. Russell George, the Treasury inspector general for tax administration.
The heavily redacted report contains few details about inmates' scams and no information about how two prisoners thought they could get the federal government to send them more than $1 billion.
Tax information, even for inmates, is private by law, unless a person gets charged with a crime.
The IRS says it aggressively prosecutes tax fraud.
Over the years, investigators have found that crafty inmates will go to great lengths to try to steal identities or trick the IRS into sending them a refund they don't deserve, said IG spokeswoman Karen Kraushaar.
Some inmates scour obituaries, looking for people's identities to steal. Others use the identities of fellow inmates or even their own.
Some use their access to computers to file tax returns online. They can have refunds electronically deposited into the bank accounts of friends on the outside.