Summ is a crypto tax and portfolio tracking platform that rebranded from Crypto Tax Calculator to its current name in October 2025, retaining all existing user data and login credentials through the transition. Summ's Twitter Score is 47 out of 1000 as of September 2026, ranking #19,386 (top 5%) among 486,621 tracked accounts.
Summ was co-founded by Shane Brunette and Tim Brunette in 2018 under the original Crypto Tax Calculator name. The platform secured a $4M seed funding round in March 2022, led by AirTree Ventures, with participation from Coinbase Ventures and 20VC.
Summ serves as an official tax partner for both Coinbase and MetaMask, and its website also lists eToro, Bitstamp, OKX, Phantom, and Binance among its official partners. The platform supports more than 3,500 integrations for importing crypto activity from exchanges and wallets, and covers onchain activity including airdrops, staking, mining, ICOs, smart-contract transactions, and broader DeFi activity. According to the company, the platform has assisted over 200,000 users with crypto tax obligations, including hundreds of accountants serving thousands of clients.
Summ has published 7,333 posts on the platform and has been mentioned by 15 accounts, with 21 total mentions.
Who follows Summ on X?
The accounts that follow Summ include 113 founders, 21 angel investors, 145 influencers and 2 VCs, among them Loomdart, Mario Nawfal, MetaMask, Tommy, Zeneca and Jackbutcher.