BASIC INFORMATION
WHO (must file):
Residents
Single: Must file if your gross income is
greater than $3,330
Head of Household: Must file if your gross
income is greater than $3,330.
Married Filing Separate: Must file if your
gross income is greater than $3,330.
Married Filing Jointly: Must file if your
gross income is greater than $6,660.
Nonresidents
Single: Must file if your gross income is
greater than $3,330
Head of Household: Must file if your gross
income is greater than $3,330.
Married Filing Separate: Must file if your
gross income is greater than $3,330.
Married Filing Jointly: Must file if your
gross income is greater than $6,660.
WHAT (forms do you file)
Residents
Form 2 Montana Individual Income Tax Return
Nonresidents
Form 2A Montana Individual Income Tax Return
WHEN (are the tax returns due)
Original due date: April 15th
Extended due date: October 15th
WHERE (do you mail the tax returns)
If you are sending a payment, send to:
Department of Revenue
P.O. Box 6308
Helena, MT 59604-6308
For all other returns, including refunds,
send to:
Department of Revenue
P.O. Box 6577
Helena, MT 59604-6577