Upload CSVs or connect exchange APIs. CoinTax calculates your gains, losses, and tax using genomsnittsmetoden — the Swedish weighted average cost method. Multi-year. Multi-exchange. Done.
K4 Avsnitt D generation using genomsnittsmetoden. Supports both private (30%) and company (20.6%) tax rates.
Bybit, Coinbase, Kraken, BingX, Ledger, Trezor and more. API sync or CSV upload — your choice.
Upload 3 years of data, get 3 years of tax reports. Pools carry forward automatically.
Drag and drop CSV files or connect API keys. Auto-detection identifies your exchange format.
Weighted average cost pools with 28-digit precision. Real-time SEK price lookups.
K4 text files ready for Skatteverket. Full transaction CSV exports for your records.
Upload CSV files or connect your exchange API keys. We auto-detect the format and parse your transactions.
Select your tax year. CoinTax applies genomsnittsmetoden, fetches SEK prices, and computes your gains and losses.
Get your K4 Avsnitt D report ready for Skatteverket. Download transaction CSVs for your records.
Connect via API or upload CSV exports
No account needed. Start uploading right away.
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