The outstanding balance for all of the direct student loans the federal government has issued topped $600 billion in April, according to newly released data from the U.S. Treasury.

The total balance hit $600.457 billion by the end of April, says the Treasury, up from $592.142 billion at the end of March.

The Federal Direct Student Loan Program already has built-in debt forgiveness plans for people who end up earning low incomes or for those who entered lines of work preferred by the government.