Back in 07, I filed my taxes through H&R block, they gave me the total amount I had to pay to the federal government. I sent them the check and paid. Now, 5 years later, I got a call from a collections agency claiming I owe taxes to the state of Colordao (the state where my affiliate marketing company was based in) I have never actually lived or done any work in Colorado, the commission I earned was from companies all over the US that I promoted products for, my affiliate company in Colorado acted as a 3rd party. The lady from the collection agency claims I owed 11k to Colorado back in 2007, and now, due to interest and fees, it?s at 34k. She gave me two days to establish a payment plan before she claimed they would garnish my accounts. Does anyone have any information on this, when you do affiliate marketing, do you have to file for state taxes in every state you used an affiliate marketing company for? From my understanding, you don?t have to pay taxes to states you haven?t worked in, even if your employer is a resident there. Does that qualify for affiliate marketing too? Thanks.