<prompt> Human: So, I got a 1099k from Paypal. I sold 21000, and a little over 200 transactions. I wasnt anticipating a 1099K, and I only do this on the side. I live in California. I have no cash flowrecords of how I bought the items. It was mostly in cash in person from thrift shops, and I sell them for a slight profit online. Should I be getting a CPA for this? Or just use Turbotax, business. I have a rough estimate of COGS, just no real proof.. My main goal is to avoid an audit.. Thanks.  <response>: Youre going to need records or you could be on the hook for 21,000 profit... FWIW Im curious how you approached 21k in sales and didnt even notice it adding up, lets say you made 5 profit, that means you bought 20,000 worth of goods... And yes a CPA wouldis a good idea for this a CPA not HR Block or some other tax preparer. 