Provider at a glance
- Category
- Tax Software
- Entity
- Not verified
- Official website
- summ.com
Independent rankingchecked How it works
Details
Scored 77 out of 100 under methodology 2026.10.18, from the evidence read in September 2026.
Summ (formerly Crypto Tax Calculator)
Crypto tax software with IRS forms
Tax Software
#5 Overall
Ranked #5 of 11 tax software in the published ranking
77
ChainChoice Score
The ChainChoice Score, shown against 100: published scores run from 41 to 99.- High evidence confidence
- $99 your cost/yr
Is Summ (formerly Crypto Tax Calculator) right for you?
Right for you if these matter most
- Which country's actual tax form comes out at the end — named, and for the year I am filing?8/10; the category best is 9
- Which lot did it decide I sold, and does that method match what my tax authority actually requires?8/10, the category best
- My history has DeFi, staking, NFTs, a rug and ten transfers between my own wallets — what does it do with each one?9/10, the category best
Look elsewhere if these come first
- Can my accountant take this without redoing it — and if I stop paying, does my per-lot basis still leave with me?4/10 here; CoinLedger scores 7
Not yet tested for your country. Markets it lists: Global.
to test where you can use it.
The rank above is the published one, the same for every reader. Find my best crypto tax software shows where it lands for you.
What will Summ (formerly Crypto Tax Calculator) cost you?
$99 your cost/yr
- Transactions per year
- 1k
- Published tiers
- 4
- Cheapest tier that covers you
- Hobbyist
$35 below the median of 6 priced tax software.
How this is calculatedHow safe is Summ (formerly Crypto Tax Calculator)?
- Evidence: verified4 of 4 criteria rest on quoted, sourced receipts. Read September 2026.
- LicenceMiCA (EU): no register record on file here.
Alternatives to Summ (formerly Crypto Tax Calculator)
Compare all 4- 3CoinLedger1 point above · stronger on record portability (7 against 4)78$99
- 4Divly1 point above · stronger on record portability (6 against 4)78€99
- 6CoinTracker1 point below · weaker on complex transactions (8 against 9)76
For your setup
Find out if Summ (formerly Crypto Tax Calculator) fits you
The rank above is the published one — the same for every visitor. Answer the category's questions and this section shows where Summ (formerly Crypto Tax Calculator) lands for you, which criteria your answers weight up, and which stated needs the record does or does not meet. The published rank stays beside it.
- A few questions
- No account required
- Ranking-blind: no commercial input
- Personalised in under 60 seconds
Find my best crypto tax softwareNothing is inferred from clicks, popularity or commercial value.
Why this rank
Why Summ (formerly Crypto Tax Calculator) ranks #5
Each strength is read from evidence on a 0–10 ladder and weighted as the published methodology states. The 32 objective points these produce (23.7 here) sit inside the score; availability, friction, trust record and measured data add the rest. Best in this ranking on 2 of 4.
4 published criteria · Σ weight 100
CriterionWeightStrength · 0–10ScoreContrib.MedianBestRankEvidence
328+8.198.09#4/11Loading evidence…
268+6.667.08#1/11Loading evidence…
229+6.347.09#1/11Loading evidence…
204+2.566.08#9/11Loading evidence…
Hairline = best in this ranking · tick = its median · a missing bar is "not scored", never zero
Margin−1behind Divly, #4
RobustnessOne point from changingacross a one-point change to each of its 4 criterion scores, the re-run scores 75–79 and ranks #3–#6
Evidence4 of 4 scored4 quoted, 4 with a source link
What would move the rank
Each line is the ranking run again with one of Summ (formerly Crypto Tax Calculator)’s criterion scores changed and every other value held: the smallest whole-point change on that criterion that moves its rank, and where the re-run puts it. Up to 4 climbs and 3 falls are listed, smallest change first. Nothing here is a forecast.
Which country's actual tax form comes out at the end — named, and for the year I am filing? 8 → 9 on its ladder · passes Divly+179#5 → #3
Which lot did it decide I sold, and does that method match what my tax authority actually requires? 8 → 9 on its ladder · passes Divly+179#5 → #3
My history has DeFi, staking, NFTs, a rug and ten transfers between my own wallets — what does it do with each one? 9 → 10 on its ladder · passes Divly+179#5 → #3
Can my accountant take this without redoing it — and if I stop paying, does my per-lot basis still leave with me? 4 → 5 on its ladder · passes Divly+179#5 → #3
Which country's actual tax form comes out at the end — named, and for the year I am filing? 8 → 7 on its ladder · CoinTracker passes it−175#5 → #6
Which lot did it decide I sold, and does that method match what my tax authority actually requires? 8 → 7 on its ladder · CoinTracker passes it−176#5 → #6
My history has DeFi, staking, NFTs, a rug and ten transfers between my own wallets — what does it do with each one? 9 → 8 on its ladder · CoinTracker passes it−176#5 → #6
Smallest climb: “Which country's actual tax form comes out at the end — named, and for the year I am filing?” 8 → 9 passes Divly, #4.
Strengths
3 from the score dataWhere it leads
Best for readers who weight
- Which country's actual tax form comes out at the end — named, and for the year I am filing? — 8/10, category best 9/10
- Which lot did it decide I sold, and does that method match what my tax authority actually requires? — 8/10, the category best
- My history has DeFi, staking, NFTs, a rug and ten transfers between my own wallets — what does it do with each one? — 9/10, the category best
Tradeoffs
1 from the score dataWhere it trails
Not for readers who put first
- Can my accountant take this without redoing it — and if I stop paying, does my per-lot basis still leave with me? — 4/10 against a category best of 8/10
Record watch-outs
- Three compounding surprises, all landing after the card is charged. (1) YOUR REPORTS ARE RENTED — THOUGH YOUR DATA IS NOT DELETED. Terms clause 5.2: "For recurring services, we grant you and your Authorised Users a right to access the relevant Services only for the duration that you continue to pay for the Service, subject to these Terms." The cancellation article is blunter: "Once your subscription expires, you will lose access to any paid features, including tax reports." Read the whole article, though, because the same page also says: "The data and integrations you have imported are retained and can still be reviewed on the Accounts and Transactions pages unless a refund is issued, which may result in their deletion." So the history stays visible; what dies is the ability to REGENERATE the filed report and to EXPORT anything. The documented escape hatch does not survive either: "Currently, the only way to back up your data in Summ (formerly Crypto Tax Calculator) is by exporting your Transaction report. This ensures you have a copy of your raw data outside the platform.", which requires an active subscription ("An active subscription is required to download reports for all years.") and whose nine columns carry no cost basis. Stop paying in year three and the 2025 return you already filed cannot be regenerated to defend an audit — even though you can still look at the transactions behind it. (2) AT $49 AND $99 YOU CANNOT CHANGE THE INVENTORY METHOD. The US default is Highest In First Out, so a US filer on Rookie or Hobbyist is locked into HIFO — a method that materially changes the tax owed — and the fix costs $200 more rather than a settings click. (3) UK FILERS WITH DEFI FACE A ONE-WAY DOOR: "Please note that, currently, the Bridge and Swap categories are not supported if you choose HM Revenue and Customs as your inventory method. If you use other inventory methods (e.g., First In First Out or Average Cost), you can use these categories but will not be able to switch back to HM Revenue and Customs." The method that actually binds under UK law is unavailable to anyone who has bridged or swapped, and leaving it is irreversible. Worse, the escape is paywalled: "In Summ (formerly Crypto Tax Calculator), we provide three inventory methods if your country setting is the UK. The HM Revenue and Customs method is available for all paid subscriptions. We also provide the First In First Out and Average Cost inventory methods for users on the Investor and Trader plans." — so a UK filer on Rookie ($49) or Hobbyist ($99) has HMRC as their only method and therefore cannot use the Bridge or Swap categories at all.
Competitive position
Where Summ (formerly Crypto Tax Calculator) leads and where it trails
Rank on every objective dimension among the rows scored on it. A criterion in the top third of its pool is listed as a lead, the bottom third as a trail; the middle is neither. Popularity, size and commercial terms are not dimensions.
Availability#1 / 1114.0 of 20 · constant here
Published criteria#5 / 1117.8 of 30 · best 19.2
Friction#1 / 112.7 of 10 · constant here
Trust record#1 / 113.2 of 8 · constant here
Measured data#1 / 118.3 of 18 · constant here
Where Summ (formerly Crypto Tax Calculator) leads
- Which country's actual tax form comes out at the end — named, and for the year I am filing?#4 / 11
- Which lot did it decide I sold, and does that method match what my tax authority actually requires?#1 / 11
- My history has DeFi, staking, NFTs, a rug and ten transfers between my own wallets — what does it do with each one?#1 / 11
Where it trails
- Can my accountant take this without redoing it — and if I stop paying, does my per-lot basis still leave with me?#9 / 11
Closest alternatives
The 3 nearest rows by score
Nearest by published score in either direction. Each card states the criteria on which the two rows differ and the cost difference under the same scenario inputs; the compare arithmetic below shows why the higher one ranks higher.
Divly#4 of 11 · score 78 · 1.0 point ahead
Summ (formerly Crypto Tax Calculator) leads on
- Which lot did it decide I sold, and does that method match what my tax authority actually requires?8 vs 7
- My history has DeFi, staking, NFTs, a rug and ten transfers between my own wallets — what does it do with each one?9 vs 7
Divly leads on
- Which country's actual tax form comes out at the end — named, and for the year I am filing?9 vs 8
- Can my accountant take this without redoing it — and if I stop paying, does my per-lot basis still leave with me?6 vs 4
Largest single reason Divly is ahead: published criteria (+0.3 display points).Scenario cost: Summ (formerly Crypto Tax Calculator) has no verified pricing for this scenario.
CoinTracker#6 of 11 · score 76 · 1.0 point behind
Summ (formerly Crypto Tax Calculator) leads on
- My history has DeFi, staking, NFTs, a rug and ten transfers between my own wallets — what does it do with each one?9 vs 8
CoinTracker leads onNo scored criterion
Largest single reason Summ (formerly Crypto Tax Calculator) is ahead: published criteria (+1.3 display points).Scenario cost: CoinTracker has no verified pricing for this scenario.
CoinLedger#3 of 11 · score 78 · 1.0 point ahead
Summ (formerly Crypto Tax Calculator) leads on
- Which lot did it decide I sold, and does that method match what my tax authority actually requires?8 vs 7
- My history has DeFi, staking, NFTs, a rug and ten transfers between my own wallets — what does it do with each one?9 vs 8
CoinLedger leads on
- Can my accountant take this without redoing it — and if I stop paying, does my per-lot basis still leave with me?7 vs 4
Largest single reason CoinLedger is ahead: published criteria (+0.8 display points).Scenario cost: CoinLedger is the same.
Against the leader
81 vs 77 · gap 4.0Why Koinly ranks above Summ (formerly Crypto Tax Calculator)
The compare workspace's arithmetic applied to these two rows. Each dimension's share of the gap is its weight × the difference, on the displayed scale — it reproduces the displayed gap of 4.0 to within rounding.
DimensionThisKoinlyGap share
Availability · 23% weight · constant here14.014.0same
Published criteria · 35% weight17.819.2−3.6, worse
Friction · 12% weight · constant here2.72.7same
Trust record · 9% weight · constant here3.23.2same
Measured data · 21% weight · constant here8.38.3same
Published criterionThisKoinlyPoints
My history has DeFi, staking, NFTs, a rug and ten transfers between my own wallets — what does it do with each one? · w2298+0.70, better
Can my accountant take this without redoing it — and if I stop paying, does my per-lot basis still leave with me? · w2048−2.56, worse
Net7781−4.0
Your scenario
What Summ (formerly Crypto Tax Calculator) costs on your scenario
The cheapest published tier that covers your usage. List price before any discount; add-ons priced separately are excluded. Change an input and every figure recomputes from the published rate; the published rank does not move.
your cost/yr · default scenario — set your own
Transactions per year · your input1k
Published tiers · published rate4
Cheapest tier that covers you · published rateHobbyist
Rate read from the provider’s published pricing ↗ on 29 September 2026.
your cost/yrCost is stated as your cost/yr in USD; it is never a yield, never annualised, and it does not enter the score.
$99
Under the default inputs · USDCategory median$1346 of 11 rows priced · Summ (formerly Crypto Tax Calculator) −$35 vs median
Cheapest priced$99 · KoinlySumm (formerly Crypto Tax Calculator) costs the same · availability not applied — set your country to filterCompare with Koinly
2 of 11 rows in this ranking have no verified rate for this scenario and are absent from the median, not counted as free.
3 of 11 quote a zero fee that leaves costs out, so they are absent from the median and the cheapest row, not counted as free.
Evidence
Evidence read 29 September 2026
One row per published criterion: the page each strength was read from, its source type by domain, the reading date and whether the file and the published table agree. Open a row for the quote and the receipt.
4 of 4 cells scored
Score evidenceVerified4 of 4 criteria reconstruct from receipts
4 of 4 criteria reconstruct from a quoted, sourced receipt equal to the published strength.Public receiptsReading…4 quoted with a source URL
The receipt file has not been read yet.Evidence confidenceHighcoverage and corroboration, never freshness
4/4 criteria scored, with 4 dated sources quoted.RobustnessOne point from changingrank #3 to #6 across one-point re-runs
Whether the position holds when one criterion score is changed by one point and the ranking is run again. It is always a re-run of the ranking, never an estimate.The newest evidence read on the platform is 3 November 2026; this category's reading is older. The scores stand as read on 29 September 2026.
Reading the evidence ledger…
CriterionSourceTypeReadFreshnessStatusReceipt
Which country's actual tax form comes out at the end — named, and for the year I am filing?strength 8 · weight 32Report an error—29 September 2026*
Unknown
No reading date is recorded for this cell or its category.No receipt
A strength is published but no quote or source page is on file for it.Which lot did it decide I sold, and does that method match what my tax authority actually requires?strength 8 · weight 26Report an error—29 September 2026*
Unknown
No reading date is recorded for this cell or its category.No receipt
A strength is published but no quote or source page is on file for it.My history has DeFi, staking, NFTs, a rug and ten transfers between my own wallets — what does it do with each one?strength 9 · weight 22Report an error—29 September 2026*
Unknown
No reading date is recorded for this cell or its category.No receipt
A strength is published but no quote or source page is on file for it.Can my accountant take this without redoing it — and if I stop paying, does my per-lot basis still leave with me?strength 4 · weight 20Report an error—29 September 2026*
Unknown
No reading date is recorded for this cell or its category.No receipt
A strength is published but no quote or source page is on file for it.How you can lose money here, and what the ranking scores
- Regulatory failure (Summ (formerly Crypto Tax Calculator) 8/10): no licence where you are, or a forced market exit.Scored by Which country's actual tax form comes out at the end — named, and for the year I am filing? · 32%
- Exit failure (Summ (formerly Crypto Tax Calculator) 4/10): you cannot get out at par, on time, or with what is yours.Scored by Can my accountant take this without redoing it — and if I stop paying, does my per-lot basis still leave with me? · 20%
- Information failure: the number is wrong or bought, or your data leaks.Scored by Which lot did it decide I sold, and does that method match what my tax authority actually requires? · 26% (Summ (formerly Crypto Tax Calculator) 8/10)Scored by My history has DeFi, staking, NFTs, a rug and ten transfers between my own wallets — what does it do with each one? · 22% (Summ (formerly Crypto Tax Calculator) 9/10)
Every failure family that applies to this category is scored.
Facts
facts, not scoresWhat the record publishes
- Pricing
- https://
summ .com /pricing — fetched 29 September 2026. A desktop User-Agent gets HTTP 403 (also in headless Chrome); an iPhone-Safari User-Agent over HTTP/1.1 gets HTTP 200, and https:// summ .com /pricing /personal serves the same page. No currency code is printed; prices render with a bare "$" beside a country selector. Header: "Pay the lowest tax and get the most accurate reports with Summ (formerly Crypto Tax Calculator)." Four plans, each labelled "Annual subscription.": "Rookie" "$ 49" "100" "Transactions"; "Hobbyist" "$ 99" "1,000" "Transactions"; "Investor" "$ 249" "10,000" "Transactions"; "Trader" "$ 499" "100,000" "Transactions", with a slider to "500,000". Every plan lists "Unlimited tax reports for all tax years", "Crypto and stocks coverage" and "Dividend tracking"; "Tax minimisation algorithm", "Tax loss harvesting", "Advanced reports" and "Audit report" start at Investor; "Trading stock report" is on Trader. Above the ladder: "We support up to one million transactions and offer custom solutions for high-volume traders." FAQ: "Our subscription pricing is per year not tax year, so with an annual subscription you can calculate your crypto taxes as far back as 2013." | "Summ has an annual subscription which covers all previous tax years." | "For access to reports, the tax loss harvest tool or chat and priority support, you will need to upgrade to the appropriate paid plan." This is a recurring annual subscription covering all years, not a per-tax-year purchase; access ends when the subscription ends (https:// help .summ .com /en /articles /6294285 -cancellation-policy, fetched 2026-09-29: "Once your subscription expires, you will lose access to any paid features, including tax reports.").Summ (formerly Crypto Tax Calculator) — official pricing page ↗ · 29 September 2026 - Prices published in
- USDSumm (formerly Crypto Tax Calculator) — official pricing page ↗ · 29 September 2026
- Licences held
- Not published
- Compliance level
- partial
- Regulatory note
- THE LAST MILE IS GOOD; THE ONE-WAY DOOR IS WHY THIS SCORES LOW.
- Supported chains
- Not published
- Markets served
- global
- Primary markets
- Not published
- Restricted markets
- Not published
- Operating limits
- Not published
- Availability note
- Not published
No confirmed legal entity is on file for this record. Nothing is inferred from the brand name.
If something goes wrong with Summ (formerly Crypto Tax Calculator): where to complain, and where to report a scam
Loading the routes for your country.
How this page is reviewed
Reviewed means this product in this category was read against its sources on or after that date; every ranked category is re-read at least every 45 days. Models research, extract and parse. A deterministic engine ranks. Every quote passes an adversarial refute pass.
Accountable for this review: Mathias Siemonsmeier, Founder.
How we review · Review calendar · Corrections log · How we make money
History
What the record carries
Changes to published ranks are recorded in a ledger; every step and its cause is listed on the rank-history page. The entries below begin with the current verified snapshot, then the methodology versions whose changes applied to this category, newest first.
11 methodology entries
- 29 September 2026Current verified snapshot · methodology 2026.10.18Score 77, #5 of 11. 4 of 4 criteria scored. History starts here; earlier values are not interpolated.
- 10 October 2026
2026.10.8When nothing serves your country, the list shown for reference is the published ranking · platform-wide- fixed The reference list shown when nothing serves your country is the published order with the published scores, and a build check now fails any such list out of that order or with a score the ranking does not publish.
- fixed The explorer prints an overall rank only for a row the published ranking holds; a country entrant such as Coinbase Commerce for US merchants shows no overall rank.
- changed Published orders do not move. Country results change only where nothing serves the country: in India bill pay keeps Bitcoin Well first and now shows Strike second, as published; 35 such runs across all categories and countries now match the published list exactly.
- 10 October 2026
2026.10.6A criterion you require re-scores the rows that meet it · platform-wide- changed The explorer sends each criterion you require, at any band, as fit_required with your other answers; region, licence, chain and fact filters stay filters. On /best, a required criterion joins For you as a marked preference does, which needs your country; Overall stays the published ranking, filtered.
- added Every published criterion has a golden case as the explorer sends it (require:<criterion>), so the order a requirement gives is replayed and gated as the published order is, and a change to it needs an entry here.
- 1 October 2026
2026.10.0Layer-2 chains are ranked on whether you can leave with your funds- added Four l2_chains criteria with published band ladders: proof system (18), withdrawals if the operator stops (18), rollup stage (14) and exit window before an upgrade (6). EVM equivalence moves 40 to 17, Ethereum data availability 25 to 15 and maturity 35 to 12. Every chain's emergency exit window reads None, so the exit-window ladder also reads L2BEAT's regular, non-emergency upgrade path (Arbitrum One 10 days, Starknet and Arbitrum Nova 7, zkSync Era 4 days 3 hours); data availability separates full transaction data (10) from state diffs only (9, L2BEAT: Onchain (SD)). A stage L2BEAT marks Under review keeps its last score for at most one 45-day cycle and is never interpolated.
- changed l2_chains ranks through scoreCriterionObjective on fitStrength, like the other criterion-ranked categories; the hand-written structural scorer is deleted. All 105 criterion scores across 15 rows carry a quote and source in research-pending/rereads/2026-10-01-l2_chains.json; 131 of 135 quotes re-fetched verbatim on the read date, and the four behind a bot wall or a JavaScript shell were read by the adversarial model run.
- fixed Four facts corrected on the read: Scroll, Mantle and Blast are EVM-compatible, not equivalent (their own documentation, and for Blast live RPC probes); Starknet's public mainnet opened to users in 2022, not 2021. Arbitrum Nova's data has gone to Ethereum as blobs since 31 August 2026, and the row now leads with the Arbitrum DAO's decision to minimise it.
- fixed The old scorer credited Ethereum data availability whenever the data-availability text contained the word "ethereum", so Arbitrum Nova's committee ("…Ethereum L1 rollup fallback") and Polygon zkEVM's off-chain data ("…Ethereum L1 before the sunset") both scored full marks. Data availability is now a quoted L2BEAT reading.
Methodology 2026.10.18, the same published run every visitor sees · receipt tax_software:crypto-tax-calculator:2026.10.18:1bf07a0203ab
Are you Summ (formerly Crypto Tax Calculator)? Reply to this verdict, or send evidence, ask for a correction or claim the listing. Every message gets a public ticket number; none of it changes a rank unless a public page or a signed statement supports it.
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Editorial review of Crypto Tax Calculator , on file since April 2026 — the review is separate from the score.