What records do I need to keep for crypto tax purposes?

For tax purposes, keep detailed records of all crypto transactions including: purchase date, cost basis (price paid), sale date, proceeds, and any fees. Document exchanges between cryptocurrencies, staking rewards, mining income, and airdrops—these are taxable events. Maintain records of wallet addresses, exchange statements, and blockchain transaction hashes. Track holding periods to determine long-term vs. short-term capital gains, as they're taxed differently. Keep personal identification matching exchange accounts. Store this documentation for at least 7 years, as tax authorities require substantiation. Consider using crypto tax software that tracks transactions automatically and generates reports for filing purposes.