Looking at Late commercial payments: charging interest and debt recovery on the government website please can someone confirm what the current law is, and regarding charging late payment fees. It says payment must be within 60 days but then goes on to say the payment is late after 30 days after the customer gets the invoice which makes no sense at all. Yesterday I heard something about this on the news on the radio about it being 30 days. As a small business our distributors and suppliers expect payment within 30 days, yet some of our customers are now taking 60 days to pay us which is affecting paying our suppliers. Can I charge customers late payment fees and interest if they do not pay us within 30 days? Or is it 60 days? I am confused.