Yes, you are taxed on these the same way stocks and crypto are taxed. It's called "forex" or the "foreign exchange market" and the relevant search terms to answ

Yes, you are taxed on these the same way stocks and crypto are taxed. It's called "forex" or the "foreign exchange market" and the relevant search terms to answer your question are "forex capital gains". https://www.investopedia.com/articles/forex/09/forex-taxation-basics.asp https://www.investopedia.com/articles/forex/09/forex-taxatio... There are exceptions for small amounts of money used for personal reasons, I think it's $200. So if you travel to France, buy Euros, and then return to the US, and buy dollars with your leftover Euros, it won't be enough dollars to get taxed.