Open Source · IRS-Compliant · 1099-DA Ready
Open-source, auditable, self-hostable. The crypto tax engine built for DeFi users who don't trust black boxes.
Every tax calculation is transparent. Verify the logic yourself — no black-box algorithms, no hidden assumptions.
DEX swaps, LP positions, staking, bridges, wraps, NFTs — all handled with correct cost basis tracking.
Your financial data stays on your server. Docker deploy in minutes. No third-party data sharing.
Connect Binance, OKX, Bybit and 20+ exchanges via API. Spot, futures, perpetual contracts, deposits, withdrawals, and funding fees sync automatically.
| Feature | dTax | Koinly | CoinTracker |
|---|---|---|---|
| Open Source | |||
| Self-Hostable | |||
| NFT Tax Tracking | |||
| Auto DeFi Tx Classification | — | — | |
| Pre-Audit Risk Scanner | |||
| Specific ID Lot Selection | — | — | |
| Covered/Noncovered Classification | |||
| Regulatory Compliance Alerts | |||
| Regulatory Intelligence (MiCA, CRS 2.0, PARITY Act) | |||
| CARF 2027 Ready (67 Jurisdictions) | |||
| International Tax Methods (AU, CA, KR, IN, ES, UK, DE, FR, JP) | |||
| Audit Defense PDF | |||
| Holdings Snapshot PDF (Proof-of-Assets) | |||
| Tax-Loss Harvesting + AI Lot Advice | — | ||
| GENIUS Act stablecoin compliance | |||
| Historical Price Auto-Backfill (free) | Automatic | Manual | |
| AI Tax Assistant (Claude-powered Chat) | — | ||
| Tax Simulator (What-If Analysis) | — | ||
| 1099-DA Reconciliation | — |
Last verified: April 2026. Feature availability may change; see each provider's website for current details.
Full engine, unlimited imports
Unlimited transactions, 1099-DA reconciliation & full reports
Multi-client management for CPAs
15 countries supported: US, UK, Germany, France, Japan, Australia, Canada, South Korea, India, Spain & more — 12 methods (FIFO, PMPA, Total Average, UK Share Pooling, AU CGT, CA ACB, KR VDA, IN VDA, ES CGT) + CARF 2027 Ready
The dTax tax engine is open source under AGPL-3.0. Deploy to your own server with Docker — your financial data stays on your server. Advanced features use the same FREE/PRO/CPA plans as the cloud; no extra self-hosting fee.