Invoice Financing Companies in which they do this by buying unpaid invoices from businesses for a bit less than they're worth. This gives businesses cash right away instead of waiting for the invoices to be paid. With this money, businesses can grow faster, buy more things, or pay bills. These companies make it easier for businesses to have enough money to do what they need to do. So, if you have a business and need cash fast, invoice financing companies can help you out.