As part of my startup research I recently talked to a lady from the WA State Tax Office and described what services I expect that I'll be offering. She told me that if there is no tangible product then there is no need for me to charge sales tax to WA clients. Phew!
HOWEVER...if say I create a document, have Kinkos print it, then I pick it up to deliver it to the client she suggested that I will need a wholesale resellers permit (free). Without this Kinkos will charge me sales tax on the print job and apparently it is not good practice to just charge that receipt to the client. I was told that the resellers permit will enable Kinkos to "sell" me the brochures without tax. Then when I invoice the client, I add the cost of the goods along with the relevant sales tax based upon the physical address of the client, not my location. She explained that the sales tax here in WA State varies depending on the point of delivery to the customer.
Overall, the key factor was if I handled tangible goods. If I sent the document to Kinkos and the client paid Kinkos directly for the printing service and delivery, then I don't have to worry about sales tax as I haven't handled the tangible goods and Kinkos will take care of it.
Confused yet?
I asked about taxing out of state clients and she said she could only advice on WA State Taxes so hopefully I am in the clear in that respect. I guess if in doubt, I just won't handle tangible goods.
I can't wait to read about other people's experiences on this topic.