Now I just have a quick question about invoicing. My project contact has asked me to include my Social Security Number in my invoice for tax purposes, but as this is sensitive and confidential information, I am (I think) understandably skittish about including it in a document that could be seen by many others. Is there a different or a better way of going about this? Should I inquire about the tax form (most likely a W-9) that he needs my Social Security Number for and fill it out myself? Is this standard practice and nothing to worry about? Should I include it with strict instructions in my invoice to protect my privacy?
Thank you in advance.