Could you get a bank loan to cover it? You are a business, presumably with a track record of getting paid, so if you don't already have a loan, that could be a

Could you get a bank loan to cover it? You are a business, presumably with a track record of getting paid, so if you don't already have a loan, that could be a good option. Even the fact you haven't been paid for a while shouldn't create too much of a problem if you explain the situation (that you have been working), and e.g. produce a contract.