Liberal Democrat MP Danny Alexander has leaked Conservative proposals to cut child benefit, while the Lib Dems and Tories were in coalition together.
Alexander claims that Tory ministers wanted to make a series of cuts to child benefit, but that they were blocked by the Libs Dems.
He said the proposals included limiting child benefit and tax credits to two children, removing the higher rate child benefit from the first child, means testing child benefit, and removing child benefit from 16 to 19-year-olds.
Alexander, who was essentially number two to chancellor George Osborne throughout the coalition, said that the Tories hoped to save £8bn with the cuts.
Osborne has not denied that he entertained the proposals, but said that they were made three years ago and were never a Tory policy.
The proposals will worry parents, as the Tories have only announced where around 10% of the £12bn in welfare cuts they intend to make over the next parliament will come from, according to the Institute of Fiscal Studies (IFS).