"Will the President commit to releasing his tax returns for this year and is he still under audit for his past returns?" NBC News' Hallie Jackson asked Spicer during his daily briefing.
"My understanding is he's still under audit and I'll follow up on the question," Spicer replied.
Throughout his presidential campaign, Trump claimed that he could not release his tax returns because of an ongoing audit.
In September 2016, Trump admitted that he could release his taxes at any time but implied he saw no political advantage to doing so.
In January, White House senior adviser Kellyanne Conway said that Trump does not plan to release his tax returns.
"The White House response is that he's not going to release his tax returns," she said. "We litigated this all through the election. People didn't care."