Illinois taxpayers will be paying an in-between rate on 2017 income as a result of the state’s tax increase.

The basic tax rate increased in July from 3.75 to 4.95 percent. The Illinois Department of Revenue has calculated that the new “blended” rate will be 4.35 percent for individual returns that are due in April.

Department spokesman Terry Horstman says the rate is based on the number of days under the old and new rates.