Why can't I change my Direct Debit amount? Your Direct Debit is set to pay the minimum amount required to fulfil on your contractual obligations but you can always make extra payments in your online account to pay your loan off quicker. Related articles What if I want to make an additional payment or partial settlement? How do I change my Direct Debit details? How do I change my regular payment date? What happens if I make additional repayments on my loan? Can I pay my loan off early?