Defitax vs Dime

Defitax is a web tool for preparing cryptocurrency transaction data for tax reporting. It calculates cost basis and gains or losses, then produces tax documents. The service is aimed at DeFi traders using liquidity pools, bonding curves, prediction markets, perpetual futures and related activities. It lists support for Bitcoin, Solana, Ethereum, TRON, Base, BNB Chain, Polygon and Arbitrum, with imports from Binance, Coinbase, Kraken, Bybit, OKX, Hyperliquid, MEXC, Orderly, CoinSpot and generic CSV files. Tracking covers Hyperliquid perpetuals, prediction markets, launch platforms, liquidity-pool yields, Jupiter DCA and perpetual positions, bridges and NFTs. Cost-basis choices are FIFO, LIFO, HIFO and Specific ID, applied universally or per wallet. The free plan allows up to 500 transactions and provides a dashboard but no report export. Unlimited costs $199 a year and adds exports, tax forms, multi-jurisdiction support and the AI Tax Agent.

Dime is a free, open-source command-line tool that calculates United Kingdom cryptoasset taxes from a transaction spreadsheet. It accepts CSV data containing fields such as dates, operations, market values, assets, quantities, fees, and income, with receive, send, swap, and transfer operations. After processing, users can review figures for available tax years and see their current fiat balance. The format supports marking sent and received assets as non-fungible, including guidance for an NFT minted from multiple NFTs. Dime runs locally and stores transactions and computed figures in a SQLite database inside the user’s .dime folder. Installation documentation covers Composer, a PHAR archive, Docker, and an experimental standalone application. Composer and PHAR installations require PHP 8.2 and BCMath; Docker requires Docker and sh or Bash. The project targets people familiar with UK tax rules who want local processing.