CIT Voucher: Montana Corporate Income Tax Payment Voucher (Form CIT Voucher) (Revision)
Montana · Montana DOR · Used for tax years 2024, 2025, 2026
The Montana Corporate Income Tax Payment Voucher accompanies a check payment for corporate income tax. It identifies the payment type, tax period, federal employer identification number (FEIN), and amount paid.
Who files this form
Use this voucher when mailing a check for Montana corporate income tax. The voucher lists current-year, estimated, tentative and amended payment types.
Payments of $50,000 or more must be made electronically.
What you'll need
To pay by mail, complete the voucher and include your check. The voucher asks for:
- Name and phone number
- Payment type
- Period ending date
- Federal employer identification number (FEIN)
- Amount paid
Write your ID and tax year on the check memo line.
How to file
Pay online
Visit Montana TransAction Portal (TAP) to pay for an e-filed or paper-filed return. Payment by e-check is free. Credit or debit card payments have a small fee.
Payments of $50,000 or more must be made electronically. You can also check your tax software for available electronic payment options.
Pay by mail
Complete and detach the voucher, then mail it with your check to:
Montana Department of Revenue
PO Box 8021
Helena, MT 59604-8021
Write your ID and tax year on the check memo line. Use a separate voucher for each tax period. Do not staple or tape the voucher to your check or tax return.
Common mistakes
- Mailing a check without the voucher. Send the voucher with your check.
- Leaving your ID or tax year off the check memo line.
- Using one voucher for multiple tax periods. Use a separate voucher for each period.
- Stapling or taping the voucher to your check or tax return.
- Paying $50,000 or more by check. These payments must be made electronically.
Questions people ask
Can I pay online if I file a paper return?
Yes. TAP accepts payments for both e-filed and paper-filed returns.
Is there a fee to pay through TAP?
E-check payments are free. Credit or debit card payments have a small fee.
Can I mail a check for a payment of exactly $50,000?
No. Payments equal to or greater than $50,000 must be made electronically.
Can I use one voucher for several tax periods?
No. Use a separate voucher for each tax period.