Koinly vs Summ: which crypto tax software wins for Australians in 2026?

Quick verdict: which should you choose?

At-a-glance comparison

Integrations: 800 vs 3,500

The integration count is the headline functional difference. Koinly supports 800+ data sources. Summ supports 3,500+. The 4.4x gap is concentrated in three categories:

For typical Australian retail spot-only investors with accounts on three or four major exchanges, Koinly's 400+ centralised exchange coverage is more than enough. Both list every major Australian exchange (CoinSpot, Independent Reserve, Binance, BTC Markets) and every major global exchange (Kraken, Coinbase, Bybit, OKX). The integration gap matters when you start running DeFi positions, multi-chain Layer 2 activity, or hold long-tail tokens on smaller exchanges.

DeFi coverage: where the gap is widest

DeFi tax classification is the single hardest area of Australian crypto tax to get right manually. The ATO's 2023 guidance treats most DeFi interactions as CGT events, with specific rules for lending, liquidity provision, staking derivatives, wrapped tokens, bridging, and yield aggregation. Reconciling this manually for an active DeFi user is a tens-of-hours project per financial year.

Koinly handles the major DeFi protocols adequately. Aave, Compound, Uniswap V2 and V3, Lido, and the top 50 protocols by TVL are supported. The classification engine applies CGT-on-deposit treatment to lending pools and ordinary income treatment to yield rewards, matching ATO guidance. Where Koinly falls short: long-tail protocols, newer chains' native protocols, and certain edge cases (impermanent loss accounting on LP positions, wrapped staking derivative rebasing) require manual cleanup.

Summ's protocol-aware classification engine handles the same major protocols and an additional 1,300+ long-tail protocols. The depth of coverage is structural: where Koinly might tag an unrecognised contract interaction as a generic transfer, Summ recognises the protocol, the contract type, and applies the correct ATO classification automatically. For active DeFi users, this difference saves hours per financial year. For users running maybe two or three DeFi positions on the major protocols, the difference is small.

The honest framing: Koinly is sufficient for retail-typical DeFi exposure (a Lido stake, a Aave deposit, a few Uniswap LP positions). Summ is necessary for active DeFi (yield farming, multi-protocol position rotation, long-tail protocol exposure).

AU pricing across all tiers

Pricing is where Koinly retains its lead. Indicative AUD pricing across both products:

Pricing indicative at May 2026. The Summ referral discount narrows the gap meaningfully at higher tiers (top tier becomes equivalent to Koinly's top tier). At the entry tier, Koinly remains AUD 15 cheaper even after the Summ discount. For users budget-constrained at the entry tier, Koinly wins. For users at higher tiers genuinely running DeFi or multi-chain activity, the discounted Summ pricing is competitive and the additional integration coverage justifies the spend.

Summ referral link applies a 20% discount automatically at signup.

ATO accuracy and Australian rules

Both products handle Australian-specific tax rules correctly:

• 50% CGT discount: applied automatically to assets held more than 12 months by individuals and family trusts.
• SMSF 1/3 CGT discount: applied automatically for complying SMSFs in accumulation phase.
• Ordinary income classification: staking rewards, lending interest, airdrops with value at receipt, and bot-trading profits all classified correctly as assessable income on receipt.
• Personal use exemption: narrow ATO exemption for genuine personal-use crypto purchases, applied correctly per ATO guidance.
• Cost-base methods: FIFO default, with HIFO and ACB available with audit trail.
• AUD valuation at execution: every transaction valued in AUD at the moment of execution, not converted at year-end.

Both products produce reports compatible with myTax direct entry. Both export accountant-ready CSVs. Where Summ has a slight edge: native ATO-aligned report templates that match the structure of the individual tax return form more closely. Where Koinly has the edge: broader recognition with Australian crypto-specialist accountants, who have typically seen Koinly reports many times before. For users handling their own tax returns via myTax, either product is sufficient. For users handing reports to an accountant, Koinly's familiarity reduces the chance of explanation overhead.

SMSF support compared

Both products support SMSF reporting with the 1/3 CGT discount applied. The differences:

Koinly: general-purpose SMSF handling. Standard CSV exports and PDF summaries. Accountant has to manually map to Class Super or BGL 360 (the two dominant SMSF accounting platforms).

Summ: native exports to Class Super and BGL 360. SMSF-aware report templates. Auditor-ready transaction records with AUD valuations at every disposal. For SMSF trustees holding crypto across multiple exchanges or running DeFi inside the fund, Summ's SMSF reports save the accountant several hours per audit cycle.

For SMSF trustees holding crypto on a single exchange, Independent Reserve's domestic SMSF product handles SMSF onboarding and audit-ready records natively from the exchange itself, eliminating the cross-exchange reconciliation step entirely. Either Koinly or Summ becomes necessary only when crypto is spread across multiple exchanges or wallets. The SMSF crypto CGT calculator shows the after-tax difference vs personal holdings on a sample disposal.

The Summ rebrand from CryptoTaxCalculator

Summ rebranded from CryptoTaxCalculator in October 2025. What changed:

• Company name and consumer-facing brand
• Primary domain (cryptotaxcalculator.io now redirects to summ.com)
• App interface (cryptotaxcalculator.io/app is now app.summ.com)
• Marketing materials and partnership listings

What did NOT change:

• The Sydney-based development team
• The underlying tax engine and calculation methodology
• User accounts, transaction history, generated reports, subscription tiers
• The Australian focus

If you held a CryptoTaxCalculator subscription before October 2025, your login, data, and tier all transferred to Summ unchanged. Login at app.summ.com using your existing credentials. The brand change is the most visible difference; the product underneath is the same.

The rebrand reflects Summ's expansion beyond pure tax-calculator functionality into portfolio tracking, multi-year accounting, accountant collaboration, and audit trail documentation. The "CryptoTaxCalculator" name boxed the product into a calculator-only positioning that no longer reflected the platform's scope.

For Australian users specifically, the rebrand is neutral-to-positive. The Sydney development team, AU-first tax engine, and ATO rule support are all preserved. The new name removes the calculator-only ceiling. The product is the same Sydney-headquartered software with broader product surface area than the brand previously suggested.

Who wins on specific use cases

Casual Australian retail investor doing monthly DCA on BTC and ETH

Winner: Koinly. Cheaper entry tier (AUD 64 vs Summ's AUD 99), all the integration coverage you need (CoinSpot, Independent Reserve, Binance, hardware wallets), full ATO compliance.

Active spot trader running 50+ trades per month across 3-5 exchanges

Winner: Tie. Both handle this well. Koinly cheaper at the Investor tier (AUD 119 vs Summ's discounted AUD 159). Summ provides more granular per-exchange API integrations.

Active DeFi user with 100+ on-chain transactions per year

Winner: Summ. The 1,500+ DeFi protocol coverage and protocol-aware classification engine handle this category materially better. Koinly requires meaningful manual cleanup at this transaction profile.

Multi-chain Layer 2 user (Arbitrum, Optimism, Base, zkSync, Starknet)

Winner: Summ. 30+ L2 chains supported natively. Koinly supports 15+, with gaps in the newer L2s (Linea, Mantle, Scroll).

NFT collector or trader

Winner: Summ. 100+ NFT marketplaces vs Koinly's 50+. Better gas-fee CGT-event classification on minting and trading.

SMSF trustee with multi-exchange crypto holdings

Winner: Summ. Native Class Super and BGL 360 exports save accountant time. Koinly works but generates extra reconciliation overhead.

User handing reports to a non-crypto-specialist accountant

Winner: Koinly. Broader recognition and report-format familiarity among Australian accountants generally.

User specifically wanting an AU-headquartered software vendor

Winner: Summ. Sydney-based since 2018. Koinly is Norwegian.

User on Coinbase, MetaMask, or Bybit primarily

Winner: Summ. Direct partnerships with these platforms produce better integration depth and faster API connections.

Final recommendation

For Australian users who want the most complete crypto tax coverage available, Summ is the better default in 2026. The 3,500+ integrations and 1,500+ DeFi protocol coverage handle a category of activity that Koinly handles adequately but not deeply. The Sydney-based development team prioritises AU tax-rule changes faster than international vendors. The 20% auto-applied referral discount narrows the headline price gap meaningfully at higher tiers (top tier becomes equivalent to Koinly's). The 4.7 rating reflects this.

For budget-constrained casual users who weight pure entry-tier price and accountant brand familiarity above integration depth, Koinly is the cheaper alternative. AUD 64 starter tier is the cheapest entry point on a spot-only profile. The broad Australian accountant recognition reduces explanation overhead when handing over reports.

The honest framing: Summ is the deeper, AU-built, DeFi-aware default for serious users. Koinly is the cheaper, accountant-familiar entry-tier alternative for simple spot-only profiles. Neither is wrong for the Australian market. The decision is a function of activity depth, not which is "better".

Some active Australian crypto users run both: Summ as the primary tax engine for DeFi-heavy activity, Koinly as a secondary verification source on edge cases. The cost is double-counting subscriptions, but the cross-check catches reconciliation errors either tool would miss alone. For most users this overhead is unnecessary.

For the third Australian option, see the Syla review (most ATO-specific, lowest entry pricing) or the Summ vs Syla comparison for the AU-built head-to-head. For the underlying ATO rules these tools encode, see the Crypto Tax Australia pillar.

Summ referral link applies a 20% discount automatically at signup.

Frequently asked questions

About this analysis

Govind Satoshi

Former Institutional Trader. Founder, SatoshiMacro.

Sydney-based. Principal of Digital Empire Capital, a proprietary digital asset investment vehicle operating since 2017. Formerly traded allocated institutional capital at a Sydney proprietary trading firm. Active seed investor in early-stage protocols.