If I invested 30k in Ethereum and when my investment goes up to 60k, and I sell 30k just to get my initial investment back, will I be taxed on that? I live in the United States and just bought Ethereum this year.
I don't think the USA will have such rudimentary tax management measures. Joe Biden is a tax expert. You will be choked if you ask about tax issues here. Better do the measures yourself and find out, I mean, everything it is sensibility!!!
If you try too hard to play with taxes, your Social Security will be hard.