CoinTracker is a cryptocurrency portfolio tracker and tax calculator. It allows users to connect their cryptocurrency wallets and exchanges to track their portfolio performance and calculate their tax liabilities. CoinTracker supports over 300 exchanges and wallets, and provides users with real-time prices and historical data. The platform also offers a range of tax reports, including capital gains and income reports, which can be exported to popular tax filing software. CoinTracker was founded in 2017 by Chandan Lodha and Jon Lerner, and is headquartered in San Francisco, California.