Summ (ex-CryptoTaxCalculator) review (2026)
Australian-built, DeFi-grade accuracy
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Our take
Summ — the Sydney-built product formerly known as CryptoTaxCalculator — is what happens when the engineers are Australian taxpayers themselves. ATO logic isn't a localisation layer; it's the foundation: CGT discount, personal-use rules, financial-year handling, and reports your accountant can lodge from directly.
Its standout strength is parsing the hard stuff. DeFi transactions, LP tokens, staking, bridging and NFT trades — the categories that make other tools produce nonsense — are where Summ's categorisation engine has built its reputation, which is why many Australian crypto accountants run it under the hood.
Before you pay
Like Koinly, you connect free and pay per financial year by transaction volume. If your history includes serious on-chain activity — DEX swaps, yield farming, NFTs — the time Summ saves on manual re-categorisation is the product; simple CEX-only traders are paying for headroom they may not need.
Who is Summ (ex-CryptoTaxCalculator) for?
✅ Good fit if…
- Your history includes DeFi, NFTs or on-chain complexity
- You want Australian-built software with native ATO logic
- Your accountant wants a report they can trust without re-working
⛔ Look elsewhere if…
- You want the absolute cheapest simple AU return (Syla)
- You also need US/UK reporting for another tax residency — Koinly's multi-country support is broader
- You only made a handful of trades — free previews may be all you need
Getting started with Summ (ex-CryptoTaxCalculator)
- 1 Connect everything — free
Link every exchange and wallet you've ever used via read-only API keys or CSV. Summ (ex-CryptoTaxCalculator) previews your history before you pay anything.
- 2 Review the reconciliation
Check for missing cost bases, unmatched transfers and mislabelled transactions — five minutes here is the difference between a right and wrong return.
- 3 Generate the FY report
Pay for the financial year you're lodging and export the ATO-format capital gains report (or hand your accountant access).
- 4 Keep it connected
Leave the integrations live — next July becomes a ten-minute job instead of an archaeology project.
FAQ
Does Summ (ex-CryptoTaxCalculator) produce ATO-ready reports?
Yes — Summ (ex-CryptoTaxCalculator) generates Australian capital gains reports in ATO format, including the figures you need for myTax, with the 12-month CGT discount handled.
How much does Summ (ex-CryptoTaxCalculator) cost?
Pricing changes frequently, so we don't print numbers that go stale — there's a free tier or preview to start with, and the paid tiers are listed on the official site (the button above).
Is it safe to connect my accounts to Summ (ex-CryptoTaxCalculator)?
Use read-only API keys — reporting and tracking tools only need to see your history, never to move funds. A read-only key is harmless even if leaked.
The bottom line
The best tool in Australia for complicated crypto years — built here, for our rules.
Scored 8.5/10 by our methodology — independent of any commission.
Alternatives
Koinly 
Syla 
CoinLedger General information only, not tax or financial advice. For complex affairs, engage a registered tax agent.