About Crypto Tax Calculator (Summ)
Founded in Sydney in 2018 by brothers Shane and Tim Brunette, Crypto Tax Calculator built its reputation on handling the hard stuff: DeFi, DEX trades, staking, and NFT activity across 3,500+ integrations spanning 150+ exchanges, 500+ wallets, and 2,300+ protocols, for users in 20+ countries.
The company is rebranding as Summ (summ.com), and its reconciliation engine remains the draw: every figure in a report can be traced back to source transactions and explained — a design accountants particularly value.
A reconciliation engine automatically flags discrepancies and missing cost-basis data across thousands of integrations, so every number in a tax report is traceable and explainable.
Highlights
- 100,000+ users across 20+ countries; 150M+ transactions processed
- 3,500+ integrations covering 2,300+ DeFi protocols
- Rebranding from Crypto Tax Calculator to Summ (2025–26)
Third-party reviews
Users highlight strong support and accurate handling of complex DeFi scenarios; some flag cost and UI complexity.
Read on TrustpilotRatings belong to the cited platforms and change over time — last checked August 2026. TaxAIs does not collect its own reviews; follow the links above for current scores and full review text.
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