The partnership brings streamlined interoperability and functionality for MetaMask users. Users who connect their accounts can now load their transaction history into CoinLedger's tax reporting software in a single click. This can alleviate the hassle of gathering, transposing, and combining tax reports from various accounts and/or wallets.
“Users can now directly sync their portfolio with CoinLedger and then generate tax forms automatically directly from MetaMask Portfolio.”
https://cointelegraph.com/news/meta-mask-partners-cryptocurrency-coin-ledger-taxes-tax-reporting