Team Summ

We're excited to announce a partnership with XPlace, Solana's first true crypto credit card.

PFU à 30 %, formulaires 2086 et 3916-bis, plus-values imposables : tout pour déclarer vos cryptomonnaies à la DGFiP en 2026.

Guide étape par étape pour déclarer vos cryptomonnaies en France : Cerfa 2086, formulaires 2042-C et 2042-C-PRO, comptes à l'étranger, donations, et pertes ou vols.

Most crypto neobanks are custodied fintech in disguise. Here's what a real Bitcoin onchain neobank looks like, and why the difference matters to your tax position.

Summ adds support for Kalshi, MegaETH, CoinRabbit, and WhiteBIT. Import your trades via API or CSV and automatically calculate your crypto tax gains and losses across the platforms.

The Buy, Borrow, Die approach has long been used in traditional finance to preserve wealth, optimize taxes, and maintain exposure to appreciating assets.

Summ now supports Polymarket and Monad. Import your betting and transaction data via wallet address or CSV for complete tax reporting.

We’re proud to announce our new partnership with CoinRabbit, a crypto asset management platform with loan, earn, trade and save services.

Lock Periods lets you freeze past tax years while safely optimizing current ones. Lock historical data, experiment with accounting methods, and improve tax outcomes without risking previously filed reports.

Summ now supports Aster DEX and the Sei network, letting you import perp, spot, and on-chain transactions via API, wallet address, or CSV to simplify crypto tax reporting and reduce manual tracking.

Our new spam center gives you control over any crypto spam currencies that slip through automated detection. Mark entire currencies as spam in one click, manage all spam controls centrally, and maintain clean transaction data for precise reports.

We're proud to announce our exciting partnership with Bybit, delivering a crypto tax solution tailored to Bybit’s global community of users.

Guide complet pour déclarer vos cryptomonnaies en France : Cerfa 2086, 2042-C, 2042-C-PRO, 3916-bis, dons et cryptos perdues. Étape par étape avec Summ.

Swapping one crypto for another is a taxable event, and you will need to work out the USD value of your capital gain or loss to report on your taxes.