Accounts Payable

Accounts Payable is responsible for processing payments on behalf of the City of Mississauga for all departments.


Accounts Payable

Information for Vendors

Important Notice to Vendors of the Corporation of the City of Mississauga :

With the exception of corporate credit card transactions, a valid Purchase Order (PO) must be issued prior to or at the time of the order.
Vendors should not agree to providing goods or services without first obtaining a purchase order number.
Accounts Payable reserves the right to delay or refuse payment if invoices do not indicate a valid purchase order number.

Sending the City an Invoice - Required information  

Invoices must include the following information:

  • full name and phone number of the person who ordered or picked up the goods/services
  • ship-to address, or location of the service
  • the company’s HST/GST registration number, if taxes are charged and
  • the purchase order number – payment may be delayed without a valid purchase order number.

Past-due Invoices 

Contact us (link to contact us info) with the following information:

  • the purchase order number, 
  • invoice number, 
  • GST/HST registration number, and 
  • vendor/payee name. 

Invoices with Confidential Information

Invoices or documents with personal and confidential information should be treated in a sensitive manner.  Contact us to discuss ways we can assist you in submitting you invoice.

Submitting Invoices 

The City does not accept invoices via fax or e-mail at this time.  Please ensure all documents are mailed directly to:

The Corporation of the City of Mississauga
Accounts Payable
300 City Centre Drive
Mississauga, ON
L5B 3C1

Payment Terms 

The standard payment term is net 30 days.  Early payment may be possible if Accounts Payable has received confirmation of receipt of goods or services.  For more information about early payment discounts, contact our general enquiry line at 905-615-3200 ext. 3487.

Accounts Payable FAQs

I misplaced a cheque from the City.  How do I get it replaced?

If you have lost or misplaced a cheque sent to you by the City of Mississauga, contact our Accounts Payable department immediately  Please have all the information available to validate the payment.  Accounts Payable will then request a stop payment by the bank.  Once confirmation of the stop has been obtained by the bank, Accounts Payable will re-issue and mail the cheque to you. 

Allow minimum of 5 business days for Accounts Payable to process the replacement.

How can I get my invoice paid quicker?

Indicate the following information on your invoice:

  • vendor name and mailing address
  • payee name, if different from the operating name on the invoice
  • Invoice number
  • Invoice amount and applicable taxes
  • clear description of the goods/services
  • GST/HST registration number (if applicable)
  • ship-to address and
  • Purchase Order number

Why hasn't my invoice been paid yet?

Accounts Payable may not have received it yet.   Invoices must be sent directly to Accounts Payable clearly indicating a purchase order number. 

Mail your invoice to:

The Corporation of the City of Mississauga
Accounts Payable
300 City Centre Drive
Mississauga, ON
L5B 3C1

How will I be paid?

The City of Mississauga can pay suppliers by cheque, or through an automated Visa card payment program instead of by cheque.  It improves efficiency and reduces the cost of processing cheque transactions.

How do VISA payments work?

Upon enrolling, you will be directed to access a secure web-site to obtain the credit card account which you will use for future payments. In the future, you will receive an automated remittance notification email alerting you of the amount to charge and other pertinent details of the transaction.

How do I sign up for VISA payments?

To enroll in this payment arrangement, please have an authorized company representative complete the attached form for each appropriate remittance address and email/fax your acknowledgement to:

For more information about this program please contact Accounts Payable at 905-615-3200, extension 3487.

What are the City's payment terms?

The City's standard payment terms are ‘net 30’, or the negotiated due date.  Early payment may be made provided a suitable discount for early payment is offered. 

For more information contact our general enquiries at 905-615-3200, extension 3487.

I received a cheque from the City but I don’t know what it’s for.  How do I find out?

Contact the Accounts Payable department for assistance, 905-615-3200, extension 3487.

How can I get information about City tenders and bids?

Please visit our Tenders & Bids site:

How can I become a supplier to the City?

For more information on how to become a supplier for the City of Mississauga, visit the City of Mississauga’s procurement site Tenders & Bids link. 

How do I change my company address with the City if I’ve moved?

If your company has experienced changes of address and phone number, send a letter, on your corporate stationary, authorized by a company officer to:

               The Corporation of the City of Mississauga
               Accounts Payable
               300 City Centre Drive
     Mississauga, ON   L5B 3C1

How do I inform the City if my company has been involved in a merger or acquisition?

Inform Accounts Payable, in writing, that your company information will be changing.  The letter must include the legal company name, GST/HST registration number.  Include contract numbers that may be impacted. 

I am expecting a refund cheque from the City of Mississauga for a fee I paid, how can I find out if it was sent?

Please call our general enquires line at 905-615-3200, extension 3487.  We will require the following information:

  • the name of the payee
  • the address of the payee
  • the amount of the refund you are expecting
  • the type of refund/payment expected