Mailing addresses for Forms 941 ; Department of the Treasury Internal Revenue Service Kansas City, MO 64999-0005. Internal Revenue Service PO Box 806532To avoid additional penalties, pay the tax bill you received. If this results in a net over payment, a refund will be sent to you. How is my refund calculated? When can I expect to receive my refund? This guide provides the basics of the 941 form, instructions to help you fill it out, and where you can get help meeting all your payroll tax obligations. Complete Form 941-V if you are making a payment with Form 941, Employer's Quarterly Federal Tax. Return. The policy objective of this Directive is to ensure that federal personnel responsible for processing employment discrimination complaints do so. Housing units in 2009 for all of the jurisdictions in Contra Costa County, separating out the.