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Well that's the thing...on eBay, I mostly sold inventory that I bought to sell. But maybe 15% of what I sold was just things I had bought for myself or gifts that I decided to resell. So do I just need to be very clear about my distinction between these 2 categories? In this case, anything in the former category is eligible for deductions, and as for the latter I just treat those as neutral on my taxes (no profit, no deductions, no loss)?