The best crypto CPAs in America. Engineered transaction-by-transaction.
Chainblock Financial is the crypto-specialized CPA practice trusted by traders, miners, founders, and DeFi power users across all 50 states. Saim Akif builds quarterly subledgers, defends positions at audit, and files returns that reconcile to the chain — not just to the exchange CSV.
Five services. One audit-ready file.
Every engagement is built around your wallets, your exchanges, and the IRS rules that actually apply. We reconcile at the transaction level — not the summary level.
Crypto Tax Returns
Form 1040, 1065, and 1120-S prepared with line-by-line Form 8949, Schedule D, and Schedule C where applicable. Every disposition traced to its acquisition lot.
Learn more →Quarterly Subledger & Reconciliation
Month-by-month subledgers built from raw on-chain and exchange data. No year-end surprises. Estimated payments planned in Q2 and Q3.
Learn more →1099-DA Compliance
Broker-issued 1099-DA forms reconciled against chain data. Code B adjustments filed on Form 8949 where broker basis is wrong or missing.
Learn more →Rev. Proc. 2024-28 Elections
Safe harbor elections for universal vs. wallet-by-wallet basis tracking. Filed correctly, documented thoroughly, defensible at audit.
Learn more →IRS Audit Defense & CP2000 Response
Direct representation for CP2000 notices, CP2501, full examination, and Schedule C reclassification disputes. We read the blockchain so you don’t have to explain it.
Learn more →Three principles that separate us from every general-practice CPA.
Transaction-level reconciliation
We don’t trust exchange CSVs alone. Every engagement starts from the blockchain — raw transaction hashes, on-chain timestamps, and wallet-level cost basis rebuilt from first principles. If the CSV contradicts the chain, the chain wins.
Quarterly subledger
We close your crypto books every quarter, not once a year. That means your estimated payments are right, your capital-loss carryforwards are tracked, and April never brings a surprise. Most of our clients know their tax liability within 2% by September.
Defensible at audit
Every position we take has a memo behind it. Staking-reward character. LP exit treatment. NFT collectible classification. If the IRS opens an exam, we can substantiate every line with on-chain evidence, published IRS guidance, and a written methodology.
Playbook articles written by Saim.
Plain-English breakdowns of the IRS rules that actually affect your return this year.
Your 2025 1099-DA Readiness Checklist
The IRS is phasing in 1099-DA reporting. Here’s what every crypto holder needs to do before brokers start sending forms in early 2026.
Read the playbook →Wallet-by-Wallet vs. Universal Basis After Rev. Proc. 2024-28
The Jan 1, 2025 safe harbor changed how crypto basis must be tracked. Choose wrong and you may overpay tax — or trigger an audit.
Read the playbook →Is Your Staking Income Ordinary or Capital? The Jarrett Case and What Came After.
When do you owe tax on staking rewards — at receipt or at sale? The Jarrett case opened a door the IRS quickly tried to close.
Read the playbook →Ready to reconcile your crypto activity?
A 30-minute intake call is the fastest way to know exactly what your situation requires — and what it doesn’t.
Schedule a 30-minute intake →