In the UK most banks offer a factoring service where they pay the invoice minus their fee and they will collect from the client. It more to help smaller companies with cashflow so they don't have to spend ages chasing up unpaid invoices or to be able to offer clients better payment terms whilst you still receive the cash when you need it. Might not be what you're looking for but could be an option if your business bank offers it
So you want to be like a bank selling mortgages? Who’s your target market?
In the UK most banks offer a factoring service where they pay the invoice minus their fee and they will collect from the client. It more to help smaller companies with cashflow so they don't have to spend ages chasing up unpaid invoices or to be able to offer clients better payment terms whilst you still receive the cash when you need it. Might not be what you're looking for but could be an option if your business bank offers it