A beautiful, privacy-first web app that turns your Wise transaction history CSV into actionable financial insights, entirely in your browser, with zero data sent to any server.
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Updated
May 14, 2026 - JavaScript
A beautiful, privacy-first web app that turns your Wise transaction history CSV into actionable financial insights, entirely in your browser, with zero data sent to any server.
Bitcoin Tax Calculator transforms wallet, exchange, and blockchain transaction data into CSV and HTML tax reports, calculates cryptocurrency capital gains and cost basis with FIFO, LIFO, and HIFO methods, supports multi-chain portfolios, and prepares Form 8949 records for streamlined tax reporting and accounting.
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