Supported formats, everything the app can read

This page is a stub. The full guide is written against the shipped app version and is on its way.

Five ways in, every one of them ending at the same preview-and-reconcile step, nothing joins the workspace unseen.

Tax tool exports. Koinly, both of its export shapes including the full account export, CoinLedger, CoinTracking and CoinTracker, each mirrored one to one against the source’s format.

Exchange statements. Coinbase, Kraken and Binance statement files import directly, no tax tool in between.

Any plain CSV. A file with dates, assets, amounts and directions can be read even when it matches no known vendor shape. Ambiguities queue in Reconcile rather than being guessed.

The awkward file shapes, handled. European exports with semicolon delimiters and comma decimals read correctly, the parser keys the number format to the file’s own delimiter. UTF-16 files, byte-order marks, Windows line endings, quoted thousands, scientific notation for dust quantities, dotted European dates, currency symbols, epoch timestamps and duplicate mid-file headers all parse. Rows too broken to use are refused with a reason naming what is missing, never dropped without a word, and eighteen torture cases pin all of this permanently in the test suite.

On-chain scanning. Bitcoin plus six EVM chains, Ethereum, Arbitrum, Base, Gnosis, Optimism and Polygon, from public explorers, covered in wallet scanning.

Live exchange sync. Kraken and Binance with read-only API keys, signed in your browser, through the relay.

And back out again. The session file exports the whole workspace at any size, free, always, and reopens in the app on any machine, it is also the format for sharing with your accountant. Reports export per the downloads guide.

Missing a source you need? Say so at hello@gains.tax, the import roadmap is built from exactly those messages.