New 1099-DA forms report what you sold — often not what you paid. ClearBasis rebuilds your missing cost basis from every exchange and wallet, and produces corrected forms with every number traced to evidence — ready for the only signature that matters: yours. Fixed price. No hourly meter. No meetings.
Free scan shows what your 1099-DA likely overstates — before you pay anything. Rebuilds from $99.
| 0x8f2a…c41d | basis unknown | $12,000.00 |
| Kraken row 2,114 | gap detected | $3,410.22 |
| FTX (dead) import | rebuilding… | — |
| 0x8f2a…c41d | ✓ matched, verifiable | $4,917.03 |
| Kraken row 2,114 | ✓ basis rebuilt | $1,204.90 |
Exchanges can’t see what you paid elsewhere — so the form shows zero, and the IRS computer treats the whole sale as profit.
Fixable. The records exist — on-chain and in your files.
FTX, BitMart, that DEX from 2021 — the records didn’t die with them. We rebuild from chain data and whatever exports you still have.
This is the segment nobody else serves well.
Wallet-by-wallet basis is mandatory now (Rev. Proc. 2024-28). Most filers never migrated — through no fault of their own.
We track lots the way the rule requires.
Read-only exchange files, CSVs, wallet addresses. We can never move funds — by design.
Every acquisition reconciled to every disposal. Anything ambiguous becomes a plain-language decision card — with the tax consequence of each choice shown side-by-side.
Corrected Form 8949, basis ledger, and workpapers — you walk through every position, then sign. Most engagements: same day.
Save a free scan and we email you the moment your exchange or chain connects — that’s the honest version of a logo wall.
No fake logos. Here is a redacted page from a real workpaper pack — every figure cites its evidence. Our methodology memos are public, versioned, and reviewed by an independent EA before launch.
| Disposal | Basis | Evidence |
|---|---|---|
| 4.19 ETH · 05/15/2025 | $5,965.97 | 0x3c9d…a2, CB row 88, price src 2021-03-01 |
| 1 BTC · 06/01/2025 | $30,000.00 | CB stmt 2021-01, xfer 0x77…e1 |
ClearBasis Workbench — white-label workpapers, firm workspace, $149/mo + $25/engagement. Self-serve, no sales calls.
No. ClearBasis is tax software — it prepares the documentation; the decisions and the signature are yours, the way self-prepared filing has always worked. We rebuild your records and prepare documentation; you review every position and sign your own return. When your situation genuinely needs a professional, we say so plainly and show you our independent CPA directory.
That’s our specialty. Blockchain records outlive companies. We rebuild from on-chain history plus any exports you kept — FTX, Cryptopia, BlockFi, the DEX you forgot the name of.
Nothing hidden. Price is set by transaction count, verified during the free scan — before you pay. If your count band changes after full ingestion, we tell you explicitly and you approve before anything is charged.
The decoder reads your letter in about 90 seconds, free, and opens shortly. The full response kit is typically ready the same day your data is in — your 30-day clock is tracked to the day, visibly.
No. We produce the corrected forms and the evidence behind them. You (or your preparer) file. Your return, your signature — that’s the point.
Swaps, liquidity add/remove, staking rewards, lending, bridging, NFT buys/sells are in scope. Exotic derivatives are flagged honestly as out of scope, with raw evidence exported so any professional can pick it up.