It's a mistake the Feds are now working on fixing, according to the NY Post.
The money was returned to the Treasury after the agency "inadvertently sent payments to over 13 million bank accounts that are no longer open or valid," said tax preparer Jackson Hewitt.
It's evidence of a "large scale glitch" on the part of the U.S. government, the report says.
Meanwhile, the IRS says it is trying to get the misplaced funds to the proper bank accounts. The agency said: "The IRS and tax industry partners are taking immediate steps to redirect stimulus payments to the correct account for those affected. The IRS anticipates many additional taxpayers will receive payments following this effort."
TurboTax estimates the redirected funds will start hitting bank accounts on Friday and would continue for a few business days. TurboTax commented: "We know how important these funds are for so many Americans and we regret that an IRS error caused a delay."