Audit-grade transaction & balance data, since chain genesis.
Every token transfer, trade and balance — complete and correct from each chain's first block, across 40+ chains, with historical fiat pricing. The verified on-chain ledger crypto tax, accounting and audit teams reconcile against, including point-in-time and end-of-year balances.
Tax and audit work is only as correct as the data underneath.
A missing transfer, an unpriced token or a balance that doesn't tie out becomes a wrong cost basis and a failed reconciliation. Tax and audit firms need data that is complete, correct and provable — from genesis to year-end.
Incomplete history & gaps
Node-and-decoder-per-chain setups miss transfers and can't go back to a chain's first block — so prior-year cost basis is wrong.
No reliable historical balances
Without point-in-time and end-of-year balances per wallet, audits can't confirm holdings or tie out to the books.
Unpriced & undecoded activity
Missing fiat valuation at transaction time, plus messy DeFi and NFT events, break reconciliation and reporting.
From raw chains to audit-ready records.
We index, value, decode and reconcile on-chain activity so tax and audit teams get correct, complete data — not raw RPC.
Ingest
Complete transfer and trade history per wallet from each chain's genesis block, across 40+ chains.
Value
Historical fiat prices at transaction time, plus wallet balances at any date — including 31 Dec / fiscal year-end.
Reconcile
Decoded swaps, DeFi income and NFT activity classified so balances and cost basis tie out.
Export
GraphQL at submission time or bulk, audit-ready exports to your warehouse (Snowflake, BigQuery, S3).
Everything a crypto tax & audit workflow needs.
Complete, correct ledger since genesis
Every buy, sell, swap, mint and transfer per wallet — from each chain's first block, across 40+ chains. The verified ground-truth record for tax and audit.
End-of-year & point-in-time balances
Exact wallet balances at 31 Dec or any fiscal year-end — for audit confirmations, proof of holdings and balance-sheet reconciliation.
Full historical balance lookups
Reconstruct a wallet's holdings at any date and block, for any token, on any supported chain — no need to replay logs yourself.
Historical prices in fiat
USD, EUR and major-fiat valuations at transaction time across 1.8M+ token pairs, for accurate cost basis and gain/loss.
DeFi & NFT decoding
Staking rewards, lending interest, yield, LP positions and NFT mints/sales decoded into classifiable income and cost-basis events.
Audit-ready delivery
GraphQL API for on-demand lookups, plus bulk warehouse exports (Snowflake, BigQuery, S3) with a complete, reproducible audit trail.
The Bitquery products tax & audit teams build on.
Each is a production API with its own docs and SLAs — composed for accounting, tax and audit workflows.
"Partnering with Bitquery has been highly cost-effective — leveraging their established infrastructure rather than building our own let us rapidly expand our blockchain support and reach a much broader segment of on-chain users."
Bitquery does the hard work of parsing blockchain transaction data into a usable form so that we don't have to. We use their interface to diagnose issues with complex transactions and their analytics as a starting point for our own.
Alex Knaggs0x ProtocolThey proved they had the technology to deliver sophisticated data solutions. We extended our support through the Binance X fellowship — building an open-source library of visualization widgets on their blockchain data.
Flora SunDirector, Binance XThe complex raw data is available at different levels of detail and from different viewpoints — whether we need simple aggregated transfers or parameters for failed contract calls. The support is responsive, friendly and quick.
Jan DreskeBackend Developer, BlockpitBitquery's products are very intuitive and easy to use. We rely on them for DEX trading and liquidity data — saving us the manpower and tedious technical details of building our own system. Their team gives near-24/7 support and resolves issues fast.
Data TeamOurbitBitquery provides the infrastructure we rely on every day. Fast, reliable, and comprehensive across the chains that matter to our business.
Crypto tax & audit data, answered.
How do crypto tax, accounting and audit firms use Bitquery?
Can I get a wallet's balance at a specific date or year-end?
How far back does the transaction history go?
Which blockchains are supported?
Does Bitquery provide cost basis and FIFO/LIFO?
How is the data delivered for audit?
Correct data. Since genesis. Across every chain.
Talk to our team about a tax-, accounting- and audit-ready transaction, balance and pricing data stack — or start free and build today.