Guides

The mechanical parts of keeping your own ledger, written out: how to get a CSV of your history out of an exchange without handing over API keys, and what the arithmetic does with it once it is in.

• Average cost vs FIFO: Bitcoin cost basis explained

  The two common ways to compute cost basis, the honestly different PnL they give from the same history, and which one Perly uses.

• Download your Binance trade history as CSV

  Where the export lives, how Binance chunks long histories, and what to glance at in the file before importing it anywhere.

• Download your Coinbase transaction history as CSV

  Getting the transaction report out of Coinbase, and what its columns mean for cost basis.

• Download your Kraken trade history as CSV

  Kraken's ledger and trades exports, which one an import wants, and the fields worth checking first.