Vendor Services

Conducting Business with Sedgwick County

Please contact the Purchasing Department for details (316) 660-7255 or purchasing@sedgwick.gov.

If you or your firm are interested in conducting business with Sedgwick County, register as a Bidder at the Bidder Registration.

How can we receive our payments faster?

• Don’t mail your invoices! Save time and postage by sending all invoices to AP_Invoices@sedgwick.gov or faxing to 316-941-5127.
• Include any purchase order (PO) numbers on the invoices.
• Include IRS Tax ID / Federal EIN Number (FEIN) on all invoices.
• To avoid delays in payments, get ACH payments! For more information: Vendor ACH Enrollment Information.

Tax Exempt Information

Sedgwick County is exempt from paying Kansas sales tax. To receive a copy of the County's tax-exempt certificate, please click the following link:  Sedgwick County Exempt Certificate.

Sedgwick County W-9

Sedgwick County W-9 form.

To better serve you, Sedgwick County is planning to update its accounting and vendor systems in 2024. More information to come!