Sweet Grass County Annex
115 W 5th Ave
PO Box 888
Big Timber, MT 59011

Office Hours: M-F 8AM to 5PM
Titling Vehicles 8AM to 4:30PM

Phone: (406) 932-5151

Fax: (406) 932-3026

Phone: (406) 932-5151

Fax: (406) 932-3026

County Treasurer: Char Rasnick [email protected]

Deputy County Treasurer: Jessica Talkington [email protected]

Administrative Assistant: Rosie Flynn [email protected]

The Sweet Grass County Treasurer’s Office is responsible for receipting in money that comes to the various county departments and agencies including county schools. We also prepare and collect all county tax payments, process motor vehicle transactions, and collect driver’s license fees. Credit and debit cards can be used for payment. These transactions are processed through an outside vendor that charges a 3% convenience fee. Additionally, the office is required to keep financial records of county school budgets and produce reports for the schools and state entities.

Our office is open from 8 a.m. to 5 p.m., Monday through Friday, with the exception of holidays. We are open during the lunch hour for your convenience. We ask that if you are titling and registering a new vehicle  that you be at our office no later than 4:30pm. Please call our office to make special arrangements for those that can’t be in our office before 4:30 pm.


The first half of 2022 Real Property Taxes are due by 5:00 pm on or before Monday, November 30, 2023. Unless the first half is paid by this date, the amount payable is delinquent and draws interest at the rate of 5/6 of 1% a month from and after the delinquency until paid and 2% must be added to the delinquent taxes as a penalty. (MCA 15-16-101). Second half taxes due 5/31/2023.

Payments can be mailed to the Sweet Grass County Treasurer at PO Box 888, Big Timber, MT 59011. We also have a Drop Box located outside of our building, at 115 W 5th Ave, Big Timber, MT.  Payments can also be made online by credit card on the Sweet Grass County website at www.sweetgrasscountygov.com. or click on the tab below.

Questions? Please contact the Sweet Grass County Treasurer’s Office at 932-5151



Pay County Taxes Online


Vehicle Registration & Titling Driver’s License Information

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