How do I add cost basis information for Bitcoin that I deposited into my River account?
If you have deposited Bitcoin from an external source, River will not know your Date of Acquisition or Cost Basis. While this is unknown, River will exclude this Bitcoin from your performance calculations until you manually input the cost basis information.
How does sending Bitcoin affect the tax lots information used for performance tracking?
When you send Bitcoin from River, the amount you send is deducted from your account using the FIFO method starting with all Unknown Tax Lots then Known Tax Lots. First In, First Out, commonly known as FIFO, is an asset-management and valuation method in which assets received or bought first are sent and sold first.