Montana | Personal Tax Extension | Form IT | Montana Individual Income Tax Payment Voucher

Modified on Wed, 12 Apr 2023 at 05:20 AM

State Abbreviation MT
State Name Montana
Extension Status Approved Automatically
Return Due Date

April 18, 2023

Extended Due Date

October 16, 2023

Other Information
  • Montana provides an automatic extension to October 16th.
  • To avoid late payment penalties, 90% of outstanding current year tax liability or 100% of previous year's tax liability must be paid by April 18th, 2023.
Online Payment Montana | Online Tax Extension Payment
Payment Voucher Title Form IT, Montana Individual Income Tax Payment Voucher
State Payment Agency Montana Department of Revenue
Mailing Address with Payment Montana Department of Revenue
P.O. Box 6309
Helena, MT 59604-6309
Online Payment Options | Credit Card Use the TransAction Portal (TAP) at https://tap.dor.mt.gov. There is a fee when paying with a credit or debit card
Online Payment Options | ACH Debit Use the TransAction Portal (TAP) at https://tap.dor.mt.gov. There is a fee when paying with a credit or debit card
Failure to File Penalties Lesser of $50 or the amount of tax due.
Failure to Pay Penalties 1.2% of unpaid tax per month, up to 12%.

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