KEY POINTS
  • U.S. households likely owe $25 billion in capital gains taxes for their cryptocurrency holdings, Thomas Lee, head of research at Fundstrat Global Advisors, says in a Thursday report.
  • Last year, bitcoin soared more than 13 times in price and hit an all-time high above $19,000 in mid-December. It remains about 450 percent higher over the last 12 months.
  • Tax-related selling would add to bitcoin's tough start to the year.

U.S. households likely owe $25 billion in capital gains taxes for their cryptocurrency holdings, which could result in "massive" selling of the digital currencies into U.S. dollars by the mid-April tax filing deadline, one Wall Street analyst said.

"This is a massive outflow from crypto to USD and historical estimates are each $1 of USD outflow is $20-$25 impact on crypto market value," Thomas Lee, head of research at Fundstrat Global Advisors, said in a Thursday report. Formerly chief equity strategist at J.P. Morgan Chase, Lee is the only major Wall Street analyst to formally cover bitcoin and other cryptocurrencies.