Governor Charlie Baker’s budget chief said this week that she is revising down the official estimate of how much money the state will bring in during the current fiscal year, a public warning that leaner budget times could be ahead.

In a letter to top officials, Kristen Lepore estimated budgeted revenue will be $145 million less than expected due to a lower-than-forecast stream of state fees and other non-tax revenue.

Asked whether her estimate means unilateral cuts are coming to the $38.1 billion state budget, Lepore said through a spokesman: “We are currently assessing next steps and whether corrective action is necessary.”