what's Summ?

Summ is an automated crypto tax platform designed to simplify tax reporting for cryptocurrency investors, DeFi users, traders, and professionals. Formerly known as Crypto Tax Calculator, it automatically imports transactions from over 3,500 sources including exchanges, wallets, blockchains, DeFi protocols, and NFT marketplaces. The software categorizes complex activities such as staking, airdrops, liquidity provision, bridges, multihop swaps, mining, and NFT minting/sales, applying precise historical pricing to compute capital gains, income, and losses with full audit transparency. Featuring tools like bulk transaction editing, cost basis optimization via the "Least Tax First Out" algorithm, and portfolio tracking, Summ generates ready-to-file IRS-compliant reports integrable with TurboTax. It processes millions of assets across 180+ countries, handling trillions in on-chain volume, and is endorsed by accountants for its accuracy in reconciling fragmented transaction histories across ecosystems.

Summ added complete 1099-DA support for major exchanges; also ranked #1 crypto tax software.