MT DoR EST-I Form 2026

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4.8 out of 5

150 votes

The document outlines the procedures and calculations for determining interest on underpayment of estimated tax for individuals, estates, and trusts in Montana for the year 2022. It includes instructions on completing Form EST-I, detailing required annual payments, methods for calculating underpayments (short method and regular method), and an annualized income installment method. The document also specifies exceptions to interest charges, eligibility criteria for filing, and provides a tax table for reference.

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Click ‘Get Form’ to open the MT DoR EST-I Form in our editor.
Begin by entering your personal information in the designated fields, including your first name, last name, and Social Security Number. If applicable, include your spouse's details.
Proceed to Part I, where you will calculate your required annual payment. Fill in your combined tax liability from Form 2 and follow the instructions to complete lines 1 through 6.
If using the Short Method (Part II), enter any amounts from line 3 and total estimated tax payments made. Complete lines 7 through 10 to determine if you owe interest.
For those using the Regular Method (Part III), complete lines 14 through 28 based on your payment history and underpayment calculations.
If necessary, utilize Part IV for the Annualized Income Installment Method to adjust payments based on income variations throughout the year.
Review all entries for accuracy before saving or exporting your completed form directly from our platform.

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Versions	Form popularity	Fillable & printable
2023	4.8 Satisfied (23 Votes)
2022	4.8 Satisfied (150 Votes)
2021	4.4 Satisfied (127 Votes)
2020	4.8 Satisfied (212 Votes)
2020	4.3 Satisfied (106 Votes)

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Got questions?

We have answers to the most popular questions from our customers. If you can't find an answer to your question, please contact us.

Is there a state tax form for Montana?

Montana Individual Income Tax Return (Form 2) The 2024 income tax returns are now available. Legislative changes led to a docHub revision of the form. Please be sure review the Tax Simplification Hub for information including frequently asked questions.

How do I contact Montana Department of Revenue?

To speak to a Citizen Service Representative, call our Call Center: Phone. (406) 444-6900.

Where do I send my Montana income tax return?

Help us apply your payment accurately! your check (and tax return, if applicable) to: MT Department of Revenue PO Box 6309 Helena, MT 59604-6309 e-Pay Quickly e-pay your individual income taxes through one of our online services.

How to pay Montana state income tax?

Montana State Tax Payment Options Go to Montana TAP to submit your estimated payment or if you already have an account, log into your account. Pay via credit or debit card through Montana TAP. Be aware that a service fee is added to each payment you submit with your card. Complete voucher Form IT.

Where to mail mw3 montana?

If you still want to paper file W-2, complete W-2 MW-3 and mail them to the following address. Montana Department of Revenue, PO Box 5835, Helena, MT 59604-5835.

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Where to mail Montana W2 forms?

Paper Filing Mailing Address: Montana Department of Revenue, PO Box 5835 , Helena, MT 59604-5835.

Where do I mail my federal tax return if I live in Montana?

Arkansas, Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Montana, Nebraska, North Dakota, Ohio, Oklahoma, South Dakota, Wisconsin: Internal Revenue Service, P.O. Box 802501, Cincinnati, OH 45280-2501.

How do I register for Montana withholding tax?

Register for your Montana withholding account number If you are a new business, register online with the Montana Department of Revenue. find it on the TransAction portal or by contacting the agency at 406-444-6937 or DORe-Services@mt.gov.

MT DoR EST-I Form 2026

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