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So I received a CP2000 for accidentally not filing my 1099k which, like the previous question stated was for transactions through a Sportsbook and PayPal. The “income” is over 50k and is not in winnings just a cumulative withdrawal. My win/loss statements were all negative and there were no major winnings to generate a tax form. They want me to file this and are saying to “deduct my losses” because they don’t seem to understand. Should I just tell them that this is not income and not file-able and have all my statements and PayPal transactions available?  Thank you!