If you e-file your return, do not mail it in.
Receiving Refund/No Tax Due?
If you file on paper, send your return to:
Iowa Income Tax Document Processing
PO Box 9187
Des Moines, IA 50306-9187
Paying Additional Tax
If you file on paper:
Mail your return with a check or money order and an IA 1040V Payment Voucher to:
Iowa Income Tax Document Processing
PO Box 9187
Des Moines, IA 50306-9187
If you file an electronic return:
Mail a check or money order with an IA 1040V Payment Voucher (included with your forms) to:
Iowa Department of Revenue
PO Box 9187
Des Moines, IA 50306-9187