Here's what you should know about income tax, what it is, how it works, how to calculate it and which states don't have it.

When KPERS mailed about 120,000 income tax forms to retirees, they got delayed at the USPS distribution center in Kansas City.

Kansas collected significantly more individual income tax revenue than projected in May, exceeding estimates by 85%. State officials acknowledge the difficulty in predicting revenue following tax cuts ...