The demonstrations, organized by a loose coalition of labor and left-leaning groups with various economic agendas, are intended to focus on Trump's refusal to disclose his tax-paying history, something his predecessors in the White House have done for more than 40 years.
"When we check in with our members, this is something they care about deeply," said Ben Wikler, Washington director of MoveOn.org, a progressive political group.
Critics have raised questions about what Trump's tax returns say about his net worth and about his various business ties.
Organizers of "Tax March" are planning events in more than 150 cities, including New York, Washington and Los Angeles, as well as cities in Europe, Japan and New Zealand.
As a candidate and as president, Trump has steadfastly refused to release his tax returns, citing an ongoing audit by the Internal Revenue Service. In September, he told ABC News, "I don't think anybody cares, except some members of the press.Read more at Reuters