We have a vendor claiming to be a husband and wife sole proprietorship. I have researched and found this to be okay, it is called a "joint venture" which became available to husband/wife sole proprietorships after 2006. Previously we have made checks payable to the business name. This year the husband is asking the checks be issued in his name and under his social security number. Is this okay or should the checks be made payable to the husband and wife or their business name or does it matter? If we make the check out to the husband and wife or business name does it matter which SSN we use? Thank You