New York City officials said on Thursday that they had joined state regulators in examining whether President Trump and his family underpaid taxes on his father’s real estate empire over several decades.

The announcement came in response to an investigation published this week in The New York Times that showed how Mr. Trump had participated in dubious tax schemes during the 1990s, including instances of outright fraud, that greatly increased the fortune he received from his parents.

“We are now just starting to pore through the information,” said Dean Fuleihan, the city’s first deputy mayor.

One type of tax that the city will examine is the real estate transfer tax. Officials said the extremely low valuations the Trump family placed on buildings that passed from Fred C. Trump to his children through trusts could have resulted in underpaid transfer taxes.