I was thinking of starting a 2nd biz without a tax ID number so I dont have to get all the capital improvements forms for non maintenance work. Right now I have to file my sales tax with half of my gross sales as non taxable sales which is going to get me audited sooner or later. And then I'll have to come up with all of my reciepts for materials and invoices for improvements. Even then, lets face it, they WILL come out on top unless Im an attourney and Im not. So does anyone here not do the tax ID # at all or otherwise just keep seperate companies for taxable and non taxable sales.