IRS Crypto Audit: What to Expect and How to Survive It

The IRS has made cryptocurrency compliance a top enforcement priority. They have served John Doe summonses on Coinbase, Kraken, and other major exchanges, obtained millions of transaction records, and used blockchain analytics firms to trace transactions that taxpayers assumed were anonymous. If you have unreported crypto income, the odds of IRS detection have increased dramatically in recent years.

How the IRS Finds Crypto Income

Exchanges that operate in the United States are required to collect KYC (Know Your Customer) information and report transactions to the IRS. Form 1099-DA, the new crypto reporting form, will make this even more systematic. Beyond exchange records, the IRS uses blockchain analytics software that can trace transactions across wallets and identify patterns suggesting unreported income. The assumption that crypto transactions are private or anonymous is dangerously wrong.

What a Crypto Audit Looks Like

A crypto audit typically begins with a letter — either a CP2000 notice (proposed changes based on information the IRS already has) or an audit notice requesting documentation. The IRS will ask for records of all crypto transactions: purchase dates and prices, sale dates and prices, wallet addresses, and records of any crypto received as income. They will compare your reported figures against exchange records and, increasingly, blockchain data.

The Cost Basis Problem

One of the biggest challenges in crypto audits is establishing cost basis. If you bought crypto years ago across multiple exchanges, some of which no longer exist, reconstructing your basis can be extremely difficult. Without documented cost basis, the IRS may attempt to treat the entire proceeds as gain. Proper documentation from the beginning is critical — but even if your records are incomplete, there are methods for reconstructing basis that an experienced tax attorney can help you pursue.

Penalties in Crypto Cases

Unreported crypto income can trigger the 20% accuracy-related penalty, and in cases of fraud, the 75% civil fraud penalty. If criminal referral occurs — which is rare but not unheard of in large, deliberate cases — the stakes are much higher. Voluntary disclosure before the IRS contacts you is almost always the better path.

Representation During an Audit

Do not attempt to handle an IRS crypto audit on your own. The issues are technically complex, the documentation requirements are burdensome, and statements made without representation can create additional problems. An experienced tax attorney can manage communications with the IRS, present your documentation in the most favorable light, and negotiate the outcome if adjustments are proposed.

If you have received an IRS notice related to cryptocurrency or believe an audit may be coming, contact our office for a free consultation today.

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