California residents who own cryptocurrency — Bitcoin, Ethereum, or any other digital asset — face specific federal and state tax reporting requirements. The IRS treats cryptocurrency as property, not currency, which means most transactions create taxable events. Finding a tax professional who understands digital asset reporting is increasingly important as crypto becomes more common in personal portfolios.
How the IRS Treats Cryptocurrency
Under IRS guidance, cryptocurrency is treated as property for federal tax purposes. This means:
- Selling or exchanging cryptocurrency at a gain triggers capital gains tax
- Using cryptocurrency to purchase goods or services is a taxable event based on the fair market value at the time of the transaction
- Receiving cryptocurrency as payment for services is taxable as ordinary income at fair market value
- Mining cryptocurrency generally produces ordinary income at the time of receipt
The IRS requires taxpayers to answer a question about digital asset transactions on Form 1040. Answering incorrectly or failing to report crypto activity can result in penalties.
California’s Treatment of Cryptocurrency
California conforms to the federal treatment of cryptocurrency as property. Capital gains from crypto sales are taxed as ordinary income in California — the state does not have a separate long-term capital gains rate. This makes California’s effective tax rate on crypto gains higher than many other states.
What to Look for in a Crypto-Experienced Tax Professional
- Familiarity with IRS Notice 2014-21 and subsequent IRS guidance on virtual currencies
- Experience working with cryptocurrency transaction records and exchange reports (such as 1099-DA forms)
- Knowledge of cost basis tracking methods (FIFO, specific identification) and how to document them
- Understanding of DeFi transactions, staking income, and NFT sales, which have additional complexity
Preparing to Work With a Tax Professional on Crypto
Before your first meeting, gather complete transaction records from all exchanges and wallets you use. Many exchanges provide CSV exports or year-end tax summaries. A professional may also use specialized crypto tax software to reconcile your activity. The more organized your records, the faster and less expensive the process will be.
Official sources referenced: IRS.gov, California Board of Accountancy (dca.ca.gov/cba), California Franchise Tax Board (ftb.ca.gov). Not reviewed by a credentialed tax professional.