Massachusetts tax revenue collections are continuing to fall short of projections.

The Revenue Department said Thursday that the state collected about $2.5 billion in taxes in April. That’s up $3 million or one tenth of one percent over the same month a year ago, but $93 million short of the estimate for the month.

Revenue Commissioner Amy Pitter blamed the numbers on less than anticipated income tax collections. She also pointed to sluggish payments on income tax returns and extensions and corporate and business collections.

So far this fiscal year, the state has collected about $17.2 billion in taxes. That’s up $346 million or 2 percent from the same period a year ago, but $180 million below projections for the fiscal year ending June 30.

Tax collections also fell short in March.