Who should file Form IT-40X
Use this form to correct/update a previously filed Indiana individual income tax return.
Additional Information
If you have any questions concerning the types of income to be reported, what adjustments are allowable, how to figure and claim various credits, etc., you should refer to the instructions for the individual income tax return for the year you are amending. Current year instructions may be accessed online at www.in.gov/dor/5174.htm; instructions for previous years may be accessed at www.in.gov/dor/3488.htm.