Koinly

Launched In 2018, Koinly is the fastest growing crypto tax solution globally and offers automated capital gains reporting in 20+ countries.

It is very easy to setup and unlike other tax tools offers a complete API integration with almost every popular exchange such as Coinbase, Bittrex, Binance etc so you don’t have to enter data by hand. You can sync anything from a BTC xpub key to your EOS, COSMOS and even XRP addresses. It also has solid error detection which warns you when transactions are missing or there are errors in your data that could result in a bad tax report.

Some other distinguishing features:

• Free portfolio tracking with a beautiful and feature rich dashboard
• Live insight into how much you owe in taxes as well as recommendations for how you can save on taxes
• Integrated block explorer for multiple blockchains so you don’t have to juggle between multiple explorer sites - everything is in one place
• Generate ready-to-file tax reports like Form 8949, Schedule D etc
• Very good live chat support that answers you questions and helps with issues

Crypto portfolio tracking on Koinly is absolutely free but tax reports are a paid feature with packages available between 79$ to 399$ per year depending on number of transactions.