STATE OFFICIALS CONTINUED to insist that the Massachusetts economy is showing healthy signs of growth even as tax revenues in June were down slightly from a year ago and $173 million below forecasts for the month.

Most of the state’s taxes in June (income, corporate, and sales) were down compared to a year ago. For the year ending June 30, tax revenues were up 2.2 percent, but most of that growth came in the first half of the year as revenues slid downward in the second half. Tax revenues for the year, fiscal 2016, were off from what state officials and economists had forecasted by $484 million.

The lower-than-estimated tax collections meant Gov. Charles Baker and lawmakers had to make additional cuts in fiscal 2016 spending and also lowered spending planned for the current fiscal year, which began July 1.

Revenue Department Commissioner Michael Heffernan said tax revenues came in lower than expected because of a volatile stock market that resulted in lower income estimated tax payments and higher than expected refunds. Income tax cash refunds were up 16.1 percent in June and 11.5 percent for the year, or about $120 million more than was expected.

Heffernan said the state collected $1.37 billion in capital gains taxes during fiscal year 2016, about $299 million less than it did in fiscal 2015. The state also collected $155.3 million in tax-related settlement and judgment payments in fiscal 2016, more than $59 million less than was collected the year before.