Case Study
50+ Wallets and 40,000+ Transactions Reconstructed with Ongoing DeFi Portfolio Accounting
The Problem
An active DeFi investor operating across more than 50 wallets and multiple chains had accumulated over 40,000 transactions spanning several years with no reconciled accounting records. Activity included liquidity pool interactions, bridging across chains, staking rewards, DEX swaps, yield farming, and NFT transactions, each with distinct cost basis and income recognition treatment. Prior software outputs had never been reconciled at the wallet level, internal transfers had been miscategorized as disposals, and cost basis continuity was broken across accounts. The investor had no reliable records to support a tax return or make informed disposition decisions.
What We Did
Pulled raw transaction data across all 50+ wallets and exchanges, normalizing on-chain data from multiple block explorers and custodial export formats. Categorized each transaction type, identified and reclassified internal transfers, matched bridging events across chains, and established lot-level cost basis records for the full portfolio history. Built a defensible accounting methodology covering income recognition for staking, yield, and liquidity pool activity, and applied it consistently across the entire history. Aligned the full history with Rev. Proc. 2024-28 requirements, including account-level basis allocation and the transition away from universal pooling, ensuring the methodology is consistent with current IRS guidance on cost basis tracking across wallets and exchanges. Delivered audit-ready records covering all prior years and transitioned the client to ongoing quarterly portfolio accounting with regular reconciliation of new DeFi activity as it occurs.
The Outcome
Full transaction history reconciled across 50+ wallets and 40,000+ transactions with defensible, lot-level cost basis records. Client moved from years of unreconciled on-chain activity to clean, audit-ready portfolio accounting with a documented methodology covering every DeFi interaction type. Ongoing quarterly accounting now keeps the portfolio current, with each new protocol interaction categorized and reconciled as it occurs rather than accumulated for a year-end scramble.
