Claim your account
Three steps between you and a working BasisBridge engagement
Choose your plan
Start with Reconcile — $149, or compare every tier on the pricing page.
Complete the intake
Send your exchange CSV exports + your 1099-DA totals (secure intake list provided after checkout — never send passwords or API keys). Create your account to upload your file sets — one set per account/wallet.
We deliver
You get the pack in 5 business days: 8949-ready workbook, exception list, evidence index, and a one-page CPA handoff memo.
The workbook, as a ledger
Every row a span that ties out
| Acquired | Sold | Asset | Proceeds | Basis | Gain / loss | Term |
|---|---|---|---|---|---|---|
| 2024-01-10 | 2025-03-01 | BTC | 45,000.00 | 20,000.00 | 25,000.00 | long |
| 2025-06-01 | 2025-07-01 | ETH | 6,000.00 | 4,100.00 | 1,900.00 | short |
| 2025-06-01 | 2025-09-01 | ETH | 3,000.00 | 2,000.00 | 1,000.00 | short |
| — | 2025-08-01 | SOL | 1,000.00 | — | — | — |
The SOL row is an exception, not a figure: lots short, basis left blank and flagged INSUFFICIENT_LOTS — never zero-based. Records reconciliation only — not tax advice or filing.
Your 1099-DA shows what you sold. Rebuild what you paid.
Flat price. No API keys to hand over. No software to learn. The pack in 5 business days — proceeds tied to your 1099-DA total, to the dollar, or the variance explained.