£107m overpaid on student loans
The situation arises when payments are mistakenly taken from those who have already fully repaid their loans.
The amount university leavers in England have been overpaying has steadily increased from £14,619 in 2000/1 to £22.3 million in 2009/10, the SLC said. Only 117 graduates overpaid in 2000/1, whereas 40,050 overpaid in 2009/10.
The figures were released by the SLC following a Freedom of Information request by BBC Radio 4's You And Yours programme.
"The most efficient way to repay your loan as you approach full repayment is through the direct debit scheme for the last two years of your loan.
"If you don't wish to pay by direct debit you can continue to pay through the tax system and be reimbursed when we receive the information from HMRC."
The figures also showed that there were almost 15,000 more graduates overpaying in 2009/10 than two years previously, with overpayment amounts steadily increasing from £15.9 million in 2007/8, to £18.9 million the following year and £22.3 million last year.
Richard Lloyd, executive director of consumer organisation Which?, said: "It's outrageous that the Student Loans Company has again overcharged ex-students by millions of pounds.
"The Student Loans Company has to stop this incompetence, fix their system and make sure everyone affected is fully compensated, fast."
© 2011 Press Association