“Can a crypto-native tax calculator become the sub-ledger that connects on-chain activity to mainstream accounting systems for individuals, accountants, and businesses?”
Founded 2018 in Sydney as Crypto Tax Calculator, differentiated by focusing on DeFi/decentralized-exchange tax reporting rather than only centralized exchange trades. Expanded to the US in 2022 and secured embedded-partner status with MetaMask and Coinbase. Rebranded in 2025 to Summ (CTC Ledger) as it pushed into business/accountant workflows with QuickBooks and Xero integrations, positioning itself as a crypto sub-ledger for businesses rather than only a consumer tax tool.
Summ (Crypto Tax Calculator) processes payments through Stripe.
Summ (Crypto Tax Calculator) integrates with QuickBooks Online, Xero and BGL.
The Embedded Finance Index 2026 maps 3 layers in Summ (Crypto Tax Calculator)'s stack: Payments / PSP (Stripe); Accounting (QuickBooks Online, Xero and BGL); Tax (Summ (self-operated)).
Summ (Crypto Tax Calculator) was founded by Shane Brunette and Tim Brunette and is founded in 2018, headquartered in Surry Hills, New South Wales, Australia.
Summ (Crypto Tax Calculator) has raised Seed round (2022, undisclosed) in total (latest round: Seed, 2022).
Get a read on where your own stack stands against Summ (Crypto Tax Calculator) and the rest of its category — what they built versus bought, which providers they use, and where the gaps in your own strategy and competitive set actually are.