On February 23, Coinbase, a popular U.S.-based digital currency exchange, notified 13,000 of its customers that it would be turning over their account information to the IRS. The notice was precipitated by a U.S. District Court ruling in a protracted John Doe Summons battle between the company and the IRS concerning accounts with potentially unreported cryptocurrency income.

Ultimately, the Court found that the IRS was entitled to the information.

The Coinbase summons battle is reminiscent of aggressive tax enforcement efforts pursued by the Department of Justice to ferret out U.S. taxpayers holding unreported income and assets abroad. That initiative also began with the issuance of a John Doe summons, but to a Swiss bank, UBS, for unreported foreign account information.

The IRS and DOJ then quickly expanded to other foreign banks and other countries. With the offshore voluntary disclosure program (“OVDP”) winding down, there are strong indications that the IRS will be turning its attention to unreported cryptocurrency transactions.

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