I currently sell a mix of old personal items and things I’ve bought specifically to resell. Right now, I’m manually entering everything (buy cost, shipping, fees, etc.) into a Google Sheet, but I’m wondering if there’s a better or more automated way to track i to make tax season easier. Ideally, I’d like to leave the buy cost column blank so I can fill it in myself later and calculate profit. Does anyone have suggestions? I’m also open to using some kind of semi-cheap software if that helps. Also, for anyone familiar with Washington State tax rules, do I need to pay taxes on all the profit I make, including from selling personal items, or just the profit from things I bought with the intent to resell? Thanks!