<prompt> Human: My husband plays a card game and he plays in tournaments that pay out money to winners. For the past 3 years he has been earning money and taxes are not taken out. I followed some advice and filed it as a hobby business because he was earning like 10,000. Now we are being audited just for this part. He travels to the tournaments so we deducted the travel expense. They dont care about the parking costs or any of that. They only care about the flights and hotels. I filed out the initial audit with the spreadsheet of the tournaments he went to, the dates, and sent in the credit card statements that show the payments. Now they are saying we owe 7000 for our 2015 taxes. My husband is freaking out and obviously mad at me for doing our taxes this way. I think we should appeal because they want to know why he traveled so often which is easy to explain - tournaments. They also want receipts which is a problem because I thought the credit card statements would be enough. What are our next steps?  <response>: You need at least rtax, probably a CPA. 