We are no financial or legal advisor. But depending on where you live, etc you might need to pay taxes on your crypto trades, when you use crypto to buy something, or accept it as a sales method. We have written some guides on the topic of tax on cryptos:
We have also listed some services below that can help you file you tax returns if you have for example traded cryptocurrencies on exchanges. Please if you have any questions, suggestions of other services or tips for Go Cryptowise let us here. But to repeat we are no financial or legal advisor or even experts on this topic but hopefully we can provide some help nonetheless.