BitPay, the world's largest provider of Bitcoin and cryptocurrency payment services, has announced a partnership with crypto tax software company, ZenLedger. BitPay users can sync wallet transactions directly from within the app to ZenLedger's intuitive tax software. With just a few taps from the BitPay app, ZenLedger will automatically calculate cost basis, fair market value, gains/losses and tax-loss harvesting for a user's transaction history.