White House Office of Budget and Management Director Mick Mulvaney on Sunday said the Trump administration will not be able to pledge a balanced budget in May, despite the president's campaign promises of cracking down on federal spending.

"In May, we'll introduce the full budget to address the 10-year budget window: tax flows, larger policy changes, healthcare reforms," Mulvaney told NBC "Meet the Press" host Chuck Todd on Sunday morning.

Todd asked if the White House will pledge a balanced budget at that time.

"Not this year, but trying to get it balanced within the 10-year budget window, which is what Republicans in the House and Senate have done," Mulvaney said.

One of President Trump's goals was to avoid adding to the deficit. The OMB's proposed budget — after including funding for Trump's defense, border enforcement, and veterans' affairs priorities, has the same $466 billion deficit as last year's budget. Mulvaney defended it as "increased spending on the president's priorities without adding to the number."

However, for Trump, a GOP candidate who proposed paying down on the $19 trillion debt, his inaugural year budget is about getting started without making serious adjustments.

"Keep in mind what a budget blueprint is — and this is traditional for the first year of a new administration. Obama did it, Bush did it. What this is is a spending outline," Mulvaney said.

Mulvaney said 75 percent of the budget is mandatory spending, meaning the amount of money that can be taken out of the budget is minimal.