Dime review
A private, free UK tax calculator for users comfortable managing CSV spreadsheets.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Dime is a free, open-source command-line application written in PHP for calculating cryptoasset taxes under United Kingdom rules. It is designed for people who understand UK cryptoasset tax requirements and want transactions processed on their own computer. Dime accepts transaction spreadsheets in CSV format, supports receive, send, swap, and transfer records, and includes support for fees, income classification, non-fungible asset records, and decentralized-protocol activity.
The pricing model is straightforward: Dime is free and open-source, with no paid tiers described. Its workflow centers on a spreadsheet that the user prepares and maintains, rather than on connected exchange accounts. After processing the CSV data, Dime calculates tax figures by tax year and stores processed data in a local SQLite database. It runs on Linux and macOS, making it a focused option for users who prefer a local command-line workflow over a hosted application.
Privacy is the clearest reason to consider Dime. Because it runs locally, transactions do not leave the computer, and the local database keeps processed records on the device. The trade-off is a narrower workflow: Dime is limited to the United Kingdom, has no integrations, and does not provide verified tax-form exports. Users seeking local processing, UK tax calculations, and control over their spreadsheet data should consider Dime. Those who want connected account imports, broader jurisdiction coverage, or tax-form export support should choose another tool.
Dime pros and cons
- Where it wins
- Free and open-source with local transaction processing
- Calculates UK cryptoasset tax figures by tax year
- Supports fees, income, swaps, transfers, NFTs, and DeFi activity
- Where it doesn't
- Limited to United Kingdom tax rules
- Requires users to prepare and maintain CSV spreadsheets
- No integrations or verified tax-form exports
Dime fact sheet, pricing and score →
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