Ethereum-only Structural Tax Intelligence
TrueBasis
Structural Ethereum Tax Audit Engine
Most crypto tax software gets DeFi wrong. TrueBasis analyzes on-chain transaction structure -
method selectors, event logs, mints/burns, and contract flows - to surface costly misclassifications and produce an audit pack.
488
Impact Score (example)
"Significant structural tax risk detected."
155
High-risk events flagged
Review queue generated automatically.
846
Transactions analyzed
Deterministic rules + evidence.
What TrueBasis detects (v1)
Self transfers misread as sales
Wallet-to-wallet flows incorrectly treated as disposals.
Vault deposit mints / withdraw burns
Share mechanics that often get tagged as taxable swaps.
Staking deposits + receipt tokens
Minted receipt tokens that tools may treat as income or sales.
Protocol deposits + contract transfers
Flags structural intent so tax posture is explicit and reviewable.
Positioning:
We don't compute your crypto taxes. We audit your tax software and produce evidence-ready outputs.
What you get
- Impact Score highlighting structural tax risk
- Transaction classification with confidence and evidence
- Review queue focused on high-risk items
- Audit pack summary + exports for CPA review
*TrueBasis provides tax analysis tooling, not legal or tax advice.
Request early access to run an audit
TrueBasis is currently in private beta. Request access and we'll send you a beta code.
You'll receive a beta access code to run audits during the testing period.
Run a structural audit
Paste Ethereum addresses (one per line or comma-separated). Download a .zip audit pack.