State government tax revenues are running ahead of last year but below budget projections, the Joint Legislative Budget Committee reported Thursday.

The report on February tax revenues said they ran 5.4 percent ahead of February 2013, driven by increased construction tax revenues, up 15 percent for the month. Those revenues were up 15.6 percent through the first eight months of the fiscal year.

Retail sales revenues remained strong, up 2.4 percent in February, compared with one year earlier, and up 9 percent for the fiscal year to date, the committee reported.

The figures are used by the Legislature to help form the budget and make projections on how much will be available for this and the next fiscal year.

The report said state revenues were $16 million below budget projects for the first eight months of the fiscal year, less than 1 percent.