Cryptotaxcalculator
Founded 2018 · 43 employees on LinkedIn · 1 known investors
Crypto tax software (rebranded Summ) that turns exchange, wallet, DeFi and NFT activity into country-specific tax reports.
Also known as Crypto Tax Calculator · cryptotaxcalculator.io · CTC · Summ
Investors · 1
Company profile
researched Aug 2026Cryptotaxcalculator.io operates a cryptocurrency tax reporting platform that ingests transaction data from exchanges, hot and hardware wallets, and on-chain protocols and converts it into capital gains and income tax reports. Users import data by connecting exchange accounts via OAuth read-only access, syncing via API keys or wallet addresses, or uploading CSV files, including a custom CSV template and manual transaction entry for exchanges that have shut down or are otherwise inaccessible. The product does not auto-sync accounts; users trigger syncs (including a 'hard sync' option) themselves.
Feature coverage described in third-party review material includes automatic transaction categorisation, smart transfer matching across accounts, error-handling suggestions, asset history ledgers, and handling of DeFi loans, DEX trades, gas fees, margin and futures trading, mining, staking, lending, airdrops and NFT trades. The platform reports support for over 1,706 coins and tokens across more than 100 blockchains and over 100 exchange and wallet integrations, with jurisdiction-specific reporting for roughly two dozen countries.
A December 2025 update published on MetaMask's announcement page states the company has rebranded as Summ; its help centre and support email are now on the summ.com domain, while the cryptotaxcalculator.io domain remains referenced as the company's site.
Business model
Software-as-a-service sold on annual subscription plans, plus embedded/white-label distribution through wallet partners such as MetaMask, where reports and subscriptions are sold inside the partner's product at a discounted rate.
Paid annual plans for individual users — Rookie ($49/year), Hobbyist ($99/year), Investor ($189/year) and Trader ($299/year), with pricing varying by country and a separate plan tier for accountants. Advanced categories such as borrowing, lending, mining and staking are gated to the higher Investor and Trader tiers. A free trial is offered, and via the MetaMask integration users receive a free tax summary with paid downloadable reports at a 30% discount.
Traction
Third-party review material cites over 52,000 users, more than 1,706 supported coins and tokens across 100+ blockchains, and over 100 supported exchanges and wallets. The March 2025 MetaMask integration exposes the product to MetaMask's global user base across 23 jurisdictions.
Latest developments
In March 2025 the company launched the MetaMask Tax Hub with Consensys, embedding its tax engine into MetaMask Web. A December 2025 note on that announcement states the company rebranded as Summ, and help-centre documentation dated November 2025 is published under the Summ name and the summ.com domain.
▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies
Market position
Described in third-party review coverage as one of the leading crypto tax software solutions, competing with tools such as TokenTax, Koinly, ZenLedger, CoinTracking and CryptoTrader.Tax; its differentiation claim rests on handling complex DeFi, DEX and NFT transactions rather than only centralised-exchange trades.
Emphasis on complex on-chain scenarios (DeFi loans, DEX swaps, gas fees, leveraged trading, staking rewards) and broad multi-jurisdiction report coverage; the MetaMask partnership is characterised in the announcement as the first wallet-embedded tax solution of its kind, with MetaMask described as the only wallet to embed such a tool natively.
Technology
Transaction ingestion layer supporting exchange OAuth connections, API key syncs, wallet-address syncs and CSV uploads, combined with an auto-categorisation algorithm, smart transfer matching between a user's own accounts, spam/ignored transaction filtering, error detection with suggested fixes, and a reporting engine that produces jurisdiction-specific capital gains and income reports in multiple languages.
Go-to-market
Direct self-serve signup via the website with tiered subscription pricing, a dedicated accountant plan, in-app chat and email support, published import documentation in a help centre, and distribution partnerships that embed the tax engine directly into third-party crypto products — most notably the MetaMask Tax Hub inside MetaMask Web.
Retail crypto investors and active traders with activity across multiple exchanges, wallets, DeFi protocols and NFT platforms, plus accountants and tax professionals serving crypto clients, across roughly 21-23 supported tax jurisdictions.
Geography
Serves users internationally with country-specific tax logic for Australia, the UK, Canada, the USA, South Africa, Japan, New Zealand, Singapore, Brazil and multiple European markets including Germany, France, Italy, Spain, Austria, Belgium, Finland, Greece, Ireland, the Netherlands, Norway, Portugal and Sweden; reports are available in English, German, French, Italian and Spanish. No headquarters location is stated in the sources.
History
Sources establish that the platform operated under the Crypto Tax Calculator brand through at least March 2025, expanding its supported country list over time, and that by December 2025 it had rebranded as Summ, with help-centre content migrated to summ.com. No founding date, founders or funding history is documented in the available sources.
Risks & controversies
Review coverage notes that advanced functionality (borrowing, lending, mining, staking) is restricted to the higher-priced Investor and Trader plans. Product documentation acknowledges data-completeness limitations: the platform does not auto-sync, import completeness depends on the exchange or data provider, some exchange file formats are incompatible, and users of shut-down or insolvent exchanges may have to reconstruct or estimate transaction history manually. The company's own research cited in the MetaMask release indicates widespread user misunderstanding of crypto tax obligations, and a rebrand to Summ introduces naming/domain transition considerations.
Compiled by commissioned research from 5 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Timeline · 2
launches, deals, and filingsA December 2025 update note on the MetaMask announcement states that Crypto Tax Calculator has rebranded as Summ; the company's help centre is published under the Summ name and refers to 'Summ (formerly Crypto Tax Calculator)'.
MetaMask, built by Consensys, embedded Crypto Tax Calculator into MetaMask Web to give users a free, geo-specific tax summary of their crypto activity, with downloadable tax-authority-compliant reports and annual subscriptions at a 30% discounted rate. The integration covers country-specific reports for 23 jurisdictions and reports in English, German, French, Italian and Spanish.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 5
primary sources listed
- CryptoTaxCalculator.io Review 2026 - Is CryptoTaxCalculator Legit & Safecaptainaltcoin.com · web
5 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Cryptotaxcalculator do?
- Crypto tax software (rebranded Summ) that turns exchange, wallet, DeFi and NFT activity into country-specific tax reports.
- Who are Cryptotaxcalculator's investors?
- Cryptotaxcalculator's investors include Coinbase Ventures.