I don't know many countries where bitcoin is not taxed. But, unfortunately, America does not belong to such countries, so I have already got used to counting all my overhead costs in a special calculator in order to avoid mistakes and not get confused in numbers https://irs-offices.com/california/ventura-county/. At first it was not very convenient to use the calculator, but then I got used to it and now it takes me seconds of time, so if you need an accurate calculation, I think I helped you!