Invoicing & Payments

An invoice is a statement of charges submitted for goods or services rendered. Invoices must contain the applicable purchase order number and the city department that received the goods or services. Although a specific contract may cite instructions as to submitting invoices, as a general rule, invoices should be submitted for each purchase order immediately upon completion of services or shipment of goods. The mailing address for the invoice is noted on each purchase order.

Getting Paid

There are four conditions that need to be met before the City of Rockville can make a payment:

  • Budgeted appropriation.
  • The goods or services must be received and accepted by the city.
  • The vendor must submit a properly completed invoice.
  • The vendor must file an IRS Form W-9 with the city.

ACH Payments

The City of Rockville pays vendors via an Automatic Clearing House (ACH) process in lieu of check payments delivered by the US Postal Service. The ACH process allows vendors to receive payments for their invoices directly into their bank accounts.  

Still have questions? Contact: 

111 Maryland Ave.
Rockville, MD 20850
Monday - Friday
8:30 a.m. - 5:00 p.m.