1120 Montana electronic filing information

Contact information

Montana Department of Revenue
Phone:
406-444-6900

State electronic filing details

E-filing information
Details
Grace period
10 days
E-filing mandate
No
Accepts state-only filings
Yes. Attach the federal XML created for this State (Default). Only Federal e-file validation errors have to be cleared. E-file Reject Diagnostics do not have to be cleared
Return types accepted
C Corporation
S Corporation
Consolidated/Combined
Short-year
Withholding (part of main return e-file)
Return types not accepted
Amended
Composite
Estimate Payments
Extension
Direct deposit of refunds
Yes
Accepted forms of payment
Direct debit (EFW)
Electronic funds transfer (EFT)
Check by mail
Signature requirements
None
Supports PDF attachments
Yes
Tax year(s) supported for e-filing
Current tax year and two prior tax years
Special considerations
None
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