Iowa State Tax Extensions: Business, Personal, Information and Nonprofit Tax Returns
Iowa state does not support paper extension any longer. The extension of time is granted automatically until October 31 had the been paid at least 90% of the tax by the due date. You may use the Payment Voucher to make the payment to State of Iowa Department of Revenue website. Payment Voucher 41-137 is used for Personal extension and 42-019 is used for Business extension.
If you pay the 90% of tax before the original due date,an automatic extension of 6 months is granted.
Payments can be made using the payment voucher 42-019.
Mail payment voucher and remittance to:
Corporation Tax Return Processing - Voucher,
Iowa Department of Revenue,
PO Box 10468,
Payments are made using form 42-019, Iowa Corporation Tax Payment Voucher.
Penalty for Failure to Timely File a Return:
A penalty of 10% will be added to the tax due for failure to timely file a return if the return is not filed by the due date and at least 90% of the correct tax is not paid by the due date. The penalty can only be waived under limited circumstances.
Penalty for Failure to Timely Pay the Tax Due:
A penalty of 5% will be added to the tax due if at least 90% of the correct tax is not paid by the due date. The penalty can only be waived under limited circumstances. Where the failure to file penalty and the failure to pay penalty are both applicable, only the failure to file penalty will apply.
Income tax returns are due on April 15 following the tax year. If April 15 falls
on a Saturday or Sunday, the due date is the following Monday.
Iowa has no paper extension form. If you have at least 90% of the tax paid by the due date, you will automatically have until October 31 to file the return.
If an additional payment is necessary in order to meet the 90% requirement, you must make payment using the Iowa Individual Income Tax Payment Voucher (41-137). Vouchers can be found on our individual income tax forms page. If 90% of the correct tax is not paid timely, penalty, and interest apply. You can also pay online through eFile & Pay. ePay is free direct debit. Interest will accrue on any tax not paid by the original due date.
For additional information, please visit the State of Iowa Department of Revenue website.
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