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Filing a W-9 Form with Montgomery County Government

To obtain a blank W-9 Form "Request for Taxpayer Identification Number and Certification" click on the link below. Send the completed and signed form to Accounts Payable. Fax to 240.777.8852, regular mail to, Montgomery County Finance, Accounts Payable, 101 Monroe Street, 8th Floor, Rockville, MD 20850 or email to Once the W-9 is received the data will be matched to the Internal Revenue Service (IRS) records.
Find more information from the following link(s):
To speak with a Customer Service Representative, please call 311 during business hours.

Last Updated: 12/29/2014 15:18:27