The Trump Organization operates Wollman Rink, near Central Park’s southern edge, and Lasker Rink, in the northern end of the park. Both contracts were set to expire in April.
Mr. de Blasio’s office said it was notifying the Trump Organization that the city was starting the process of canceling the agreements. The cancellation for the carousel, which is currently closed, would take effect in 25 days; the skating rinks would take effect in 30 days, city officials said. The golf course contract is more complex and could take several months to void.
Mr. de Blasio said on Wednesday that city’s deal for the golf course with the Trump Organization “never should have been made in the first place.”
Mr. de Blasio first proposed severing the city’s ties with the company in 2015, when Mr. Trump made comments disparaging Latinos. But some legal experts argued then that voiding the contracts would not hold up in court.
The agreements contain language that forbids “arbitrary” or “capricious” reasons for cancellation if the decision appeared to be motivated simply by personal animus toward the president.
Mark Levine, a Democratic city councilman from Manhattan who has long supported cutting ties with the Trump Organization, celebrated the news.
“This is a welcome and long (years!) overdue step,” he wrote on Twitter.