Summ (formerly Crypto Tax Calculator). Adding clarity. Subtracting doubt. Accurate, easy-to-use tax software for cryptocurrency, DeFi and NFTs.Supports all CEXs, DEXs, Ethereum, Solana, Arbitrum and many more chains. Streamlines tax rules for staking, airdrops & more. 3,500+ integrations. Backed by Airtree, Coinbase Ventures & 20VC.
Written by the business, not verified by us.Summ (formerly Crypto Tax Calculator) (summ.com) has a 4.4 out of 5 rating on OK.one, based on 103 user reviews collected here. It is listed under Money & Insurance and its reputation is good. 86% of reviews are 4 stars or higher and 11% are 1 star; The business has replied to 92% of negative reviews; Reviews mostly discuss Customer service, User experience. Last updated 2026-08-12.
Reviewers overwhelmingly had a great experience with this company. Customers frequently praise the dedicated support staff and the helpful chatbot assistance that make navigating complex tax reports much simpler. Many users highlight how representatives provide quick, personalized guidance to efficiently resolve account questions and technical challenges. People often emphasize that the platform simplifies tedious financial tasks and offers reliable assistance when needed. However, some people mentioned that customer service response times can occasionally be slow during peak tax seasons. Consumers also noted occasional software bugs, alongside difficulties related to manually categorizing transactions and connecting external wallets. Some reviewers felt that troubleshooting these complex import issues required more effort than expected.
Auto-generated from all reviews of this business. For reference only.I was originally recommended this company when it was Crypto Tax Calculator by very trusted individuals in the crypto community and I agree, it is the best and most comprehensive software that I've experienced. Very easy to use as well. The customer service is also top notch, with Ben and Jenna at the helm, I was swiftly taken care of. Thank you to the team and everyone involved with this company. I shall sing your praises!
SUMM.com is by far the best crypto tax software out there, and I’ve used a few. Extensive integrations to import transactions from most every exchange. They also have an option to create custom CSV files to import transactions from legacy exchanges. Questions are quickly answered and one of their support representatives will spend quality time with you to straighten everything out. Thanks for your help Karl!
I managed to input 5 years of data from multiple exchanges and wallets in one go to catch up on undeclared crypto transactions.A lot was manual input. Initially a daunting prospect, but once you become familiar with the app not so bad. Long and short the ATO was happy. Support was excellent. Shout out to Jena.
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