Employers in Indiana must conform with these state rules relating to income tax withholding and administration.
General Withholding Requirement: Indiana income tax must be withheld from wages paid to resident employees for services performed either within or without the state and from wages paid to nonresident employees for services performed in the state.
Employee Withholding Exemption Forms: Indiana Form WH-4 must be completed by each employee, to determine the appropriate level of state income tax to withhold from earnings. Of course, Federal Form W-4 also must be completed by each employee, to determine the appropriate level of federal income tax to withhold from earnings.
Reciprocal Agreements: Indiana has reciprocal agreements in effect with Kentucky, Michigan, Ohio, Pennsylvania, and Wisconsin.
Administration:
Indiana Department of Revenue
Withholding Tax Section
P.O. Box 7222
Indianapolis, Indiana 46207-7222
Telephone: 317-233-4016
Local Tax Jurisdictions: Most counties impose one or more local income taxes that must be withheld from employees' wages.