Montana W-2 Reporting Requirements

Does Montana mandate W2 filing?

Yes. The Montana Department of Revenue requires you file 1099 online even if there is no state withholding.

Does Montana have any additional requirements when filing W2 forms?

Yes. You need to file Form MW-3 as part of your W2 filing.

What information do I need to report on Form MW-3?

Form MW-3 is an annual reconciliation used to report the wages and taxes withheld from employees’ paychecks.

What are the due dates to efile W2 & Form MW-3 to the state of Montana?

The filing deadline for both is the last day of January.

What are the requirements to file my W2 form online?

The state of Montana accepts both e-filing and paper filing. However, if you are submitting more than 25 W2s, it is recommended that you e-file. Filing Form W2 online is required if you paid your taxes electronically during the year.

Does TaxBandits support W2 online filing & the efiling of Montana State Form MW-3?

TaxBandits supports W2 online filing, but does not support filing MW-3.

What is the penalty for filing Montana W-2s and MW-3s late?

Montana charges a penalty for filing after the due date: a $50 minimum, or 5% of the outstanding tax per month, and up to a maximum of 25% of the tax due Learn more about the Form W-2 penalties in detail by visiting

Where do I mail the W2 Form for Montana?

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Form W-2, 1099, 94x Filing is due by January 31, 2019.

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