What Records Should You Keep for Crypto Tax Purposes?
A practical checklist of exactly what to record for crypto taxes — acquisitions, disposals, reward income, and DeFi activity — before you need it later.
Knowing conceptually that record-keeping matters is one thing — actually knowing which specific pieces of information to capture, and for which types of activity, is what makes that knowledge practically useful.
Records for Every Acquisition
For each time you acquire crypto — through purchase, trade, or reward — recording the date, the amount acquired, its value at that time (establishing cost basis), and any associated fees provides the foundational data needed for every future calculation involving that specific acquisition.
Records for Every Disposal
For each time you dispose of crypto — through selling, trading for a different asset, or spending it directly — recording the date, the amount disposed of, its value at that time, and which specific original acquisition (and its cost basis) the disposal corresponds to completes the other half of every gain or loss calculation.
Records for Received Staking, Mining, or Other Reward Income
Income received through staking, mining, or similar mechanisms generally needs its own record — the date received, the amount, and its value at the time of receipt, since this typically establishes both taxable income at receipt and a new cost basis for that specific received amount going forward.
Records for DeFi-Specific Activity
Liquidity provision, yield farming, and other DeFi activities generate their own specific records worth capturing — amounts deposited and withdrawn from pools, any LP tokens received, and yield earned, since this activity's tax treatment often depends on details that basic buy-sell records alone wouldn't capture.
Records of Which Specific Wallets and Platforms Were Used
Maintaining a record of which specific wallets, exchanges, and platforms you've used for crypto activity — even ones no longer actively used — helps ensure comprehensive coverage when eventually compiling a complete picture, rather than potentially overlooking activity on a platform used only briefly or in the past.
Records of Transfers Between Your Own Wallets
Transferring crypto between wallets you personally control generally isn't itself a taxable event, but keeping a record of these transfers helps maintain an accurate, complete picture of where specific holdings actually are — useful both for your own tracking and for distinguishing genuine transfers from actual taxable disposals if ever questioned.
Why Screenshots and Exported Data Serve as Useful Supplementary Documentation
Beyond core transaction data, periodically saving screenshots or exported records from exchanges and wallet interfaces provides supplementary documentation that can help reconstruct or verify your primary records if needed later, particularly useful if a platform's own historical data later becomes harder to access.
What This Means for Building a Comprehensive Record-Keeping System
Combining acquisition records, disposal records, reward income records, DeFi-specific activity records, and a general inventory of platforms used together provides the comprehensive foundation needed for accurate tax reporting, regardless of which specific jurisdiction's rules ultimately apply to your situation.
Check whether your current records cover acquisitions, disposals, reward income, and DeFi activity comprehensively — comprehensive records now save considerably more effort than reconstruction later.