Economists have warned about exploding future revenue losses associated with Roth IRAs. With these accounts, the government is "bringing in more now, but giving up much more in the future," said economist and Forbes contributor Leonard Burman. In a study for The Tax Policy Center, Burman calculated that from 2014 to 2046, the Treasury would lose a total of $14 billion as a result of IRA-related provisions in the 2006 tax law. The losses stem from both Roth conversions and the ability to make nondeductible IRA contributions and then immediately convert them to Roths.