Crypto Taxation Kit

Comprehensive suite of APIs to build crypto tax solutions that scale with historical on-chain transaction data across 150+ chains.


Covalent is the #1 Choice for Building Tax Reporting Solutions


A single, unified API to fetch historical transactions including decoded log events. Scales to 150+ blockchains.


Reduce time to market by consuming blockchain transactions in hours, not weeks.


The Covalent infrastructure, built for the enterprise, available to the smallest of startups.

Unified Schema
Decoded Transactions

Turn Back the Clock With Historical Transaction Data

Covalent delivers comprehensive historical transaction data across 150+ chains, alleviating the challenge of obtaining complete and accurate crypto activity records. Experience a seamless and straightforward overview of every transaction a wallet has made.

Structured Data, Consistent Across Chains

Cut through the noise of inconsistent blockchain data with the Covalent Unified API. Our standardized schema across all blockchains simplifies data handling, boosting efficiency and empowering you to capture your clients’ activity easily.

Enriched Transactions for Contextual Clarity

Covalent enriches blockchain transactions with human-readable details, simplifying the understanding of complex events. With added context such as protocol names and logos, enjoy a cleaner interface and get a better grasp on transaction activities.


Transaction Summaries

Quickly summarize wallet activities without having to download the entire history.

Wallet Activity Detection

Locate when and where a wallet has been active across 150+ chains with a single API call.

Standardized Events

Easily understand complex DeFi transactions with standardized event fields for adding liquidity, lending, borrowing and more.

Rich DeFi Data

Get liquidity pool positions, rewards, APY and transaction details for top DeFi protocols.

All Token Balances

Get ERC20, 721, 1155 & native token balances with one API call.

Enterprise Support & SLAs

Your confident and reliable partner during tax season.

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We're constantly impressed by the quality and quantity of innovative features released by the Covalent team for their Unified API.

Jin Chung



Covalent was the only solution able to meet our needs at scale and the team has been incredibly responsive and supportive in making us successful.

Nathan Snell

Co-founder & CEO


The Covalent API made it very easy to help our SAFE users categorize their on-chain transaction histories.

Jason Chong



Covalent was instrumental in getting us onboarded in our multichain journey. Fetching data became so much easier without digging through low level blockchain data layers.

Idon Liu




Solving specific problems or use cases using the Covalent Unified API.