When working with a major production company or even indie film producers how do you make sure you get paid for services rendered or location rental? Do you require a letter of credit (for major producers) or maybe a credit card on file for smaller accounts? Do you get paid when services are performed or is there a billing cycle that you have to use? Is all of this negotiated when you are securing the contract (I assume contracts are needed to cover everyone's butt)? I have never operated a business where I needed a billing service or CPA to collect my fees but I need this information in order to get my business plan in order.