UK self assessment is due 31 January.
If you're choosing software for the crypto part, @CryptoSlate just ranked Summ first for UK crypto tax.
Summ
Australian tax software for crypto, shares and ETFs, tracking on-chain DeFi and NFTs
3.5/ 5
Our score
Good
What is Summ?
Based in Australia, Summ calculates tax liabilities across cryptocurrency, DeFi, NFTs, traditional shares and ETFs.
Corporate background
Established in Australia in 2018 as Crypto Tax Calculator, the company supports Australian Taxation Office (ATO) reporting. It rebranded to Summ in October 2025 to reflect an expanded scope covering traditional equities alongside digital assets.
How the platform works
The platform supports centralized exchanges, DeFi and NFTs. Webull Australia clients can export transaction histories for direct upload.
Pricing and regional availability
The software is built around Australian Taxation Office guidelines.
Best for:Australian crypto and equity investorsActive DeFi liquidity providers and tradersInvestors consolidating share and token taxes
Pros and cons
Pros
- Alignment with Australian Taxation Office guidelines
- Supports crypto, shares and ETFs in one portfolio
- Supports DeFi and NFT activity
- Webull Australia clients can export transaction histories for upload
Cons
- Unlisted DeFi contracts require manual categorization by the user
- Historical trades rely on clean CSV exports if exchange APIs miss data
Our review
3.5/5
Good
Summ offers dedicated tax reporting for crypto, shares, and DeFi portfolios under local rules, but multi-asset investors may encounter manual CSV requirements for unlisted protocols.
Summ, formerly known as Crypto Tax Calculator, is an Australian tax calculation platform launched in 2018. Originally designed for on-chain activity, the platform rebranded to track traditional shares and ETFs alongside digital assets, uniting decentralized finance activity, non-fungible tokens, and stock trading inside a single portfolio.
The software focuses heavily on handling complex on-chain mechanics. It parses decentralized finance interactions and NFT transfers, categorizing them according to local guidelines such as those from the Australian Taxation Office. Webull Australia clients can export transaction histories for upload to Summ, reducing the friction of combining decentralized transactions with regulated exchange trading.
Operational trade-offs remain standard for the category. Users working across niche blockchain networks or unlisted decentralized protocols may need to format and import manual CSV records when direct API tracking fails. While the platform automates categorization for standard DeFi interactions, high-volume on-chain activity can require manual review to ensure transactions are not mischaracterized as disposals or income events.
Summ suits Australian crypto investors holding diversified portfolios across DeFi and equities who want local tax guideline alignment. Traders who operate entirely on centralized exchanges without off-chain holdings or traditional shares may find dedicated single-asset calculators simpler to configure.
Sources (1)
Specs
| DeFi & NFT support | Yes |
|---|
Not disclosed by the provider: Tax reports for, Free plan, Paid plans from (per tax year), Exchange & wallet integrations, Reports produced, TurboTax export, Accountant portal, Mobile app, Free trial, Tax professional support.
Data from the provider's website and public sources. Fees and availability change; confirm on the official site before you sign up.
Key features
Multi-asset portfolio reporting
Combines cryptocurrency trades with traditional share and ETF records within a unified tax portfolio.
Webull Australia integration
Enables Webull Australia users to export transaction histories for upload alongside crypto holdings.
Australian tax rules
Applies calculation models aligned with Australian tax guidelines.
What users say about Summ
Reviews frequently highlight Summ for its clear layout, reliable wallet and exchange sync, and automated transaction reconciliation tools. However, users occasionally note slow customer support responses along with difficulties when handling missing cost bases or data discrepancies.
Top goods
In their own words
“I have about 20,000 transactions and I use Summ.com. For heavy DeFi usage, It is very difficult to reconcile it by yourself, unless you're constantly doing it throughout the year.”
“Sounds like you have a good handle on the workflow. And, that's great for use with your own Excel or Google Sheets spreadsheet. Stiĺl, it gets tricky over the long haul. This is why we started using crypto tax software 4 years ago - due to all the complexity and for peace of mind.”
“Our story about crypto tax software is this; we started off years ago with just a complicated Excel spreadsheet, but in the last 3 years, we switched first to KOINLY, (which we had stressful issues with when it would not importing multiple CSV files back in 2024), then we swore off KOINLY forever…”
“Hi Justin, Thanks for connecting. I've just logged in after work and account balances are showing again. Not sure if they're accurate though, but it looks like it's back to normal. I was not able to find anywhere to log a support ticket as all of the support links lead to "Ask Summ" chat.”
“summ.com has the lowest price for 10k transactions. ($249) But I've used it before and have had a boat full of complications with no cost basis, duplicates, unknown whatevers. Ughh. I wish the gov. would leave our crypto alone.”
Scam warning: Scammers have contacted individuals claiming they have frozen Bitcoin and directing them to log into summ.com with provided temporary credentials.
Based on 158 Reddit posts and comments from the last 12 months, checked Oct 20, 2026. These are posts by users on other sites, not reviews submitted on CryptoReview.
User reviews
No user reviews yet. Have you used Summ? Share your experience below.
FAQ
What is Summ?
Summ is a tax calculation platform for crypto, shares, and ETFs, previously named Crypto Tax Calculator.
Where is Summ based?
Summ was founded in 2018 and is based in Australia.
Does Summ support DeFi and NFT taxes?
Yes, Summ supports decentralized finance transactions and NFTs alongside regular exchange trades.
Can Summ track traditional shares as well as crypto?
Yes, Summ supports traditional equities, ETFs, and Webull Australia transaction-history exports alongside digital assets.
Latest from Summ on X
uptober didn't really pan out..... can we please get moonvember 😅 https://t.co/pxm8MWlr6e
○ lodged
○ lodging
◉ still looking for the 2021 exchange
○ lodging
◉ still looking for the 2021 exchange
Self-lodgers, 11:59pm tonight.
The 31 October deadline fell on a Saturday, so it moved to today. https://t.co/H0aUv9Hg4y
The 31 October deadline fell on a Saturday, so it moved to today. https://t.co/H0aUv9Hg4y
"i'll just do the crypto bit sunday night" https://t.co/u5ljmtA8AO
Recent public posts from @summ_app, shown as published. Not reviewed or endorsed by CryptoReview.
Alternatives to Summ
Crypto tax reporting and portfolio tracking platform supporting over 750 integrations
United States · United Kingdom +8Free planAccountant portal
Crypto tax reporting platform with 1,000+ integrations and official TurboTax export
United States · United Kingdom +4Free planDeFi & NFT support
European crypto tax platform generating localized reports and official forms for 13 countries
United Kingdom · Germany +5Accountant portalPaid plans from (per tax year): $39
Enterprise crypto tax and information reporting software covering 1099-DA and CARF across 70+ jurisdictions
United States · United Kingdom +8Accountant portal1099-DA
Crypto tax reporting platform covering 55+ jurisdictions with deep Solana and DeFi support
United States · Canada +4Free planDeFi & NFT support
Enterprise crypto subledger and tax platform backed by $22M in funding
United States · OtherDeFi & NFT supportAccountant portal