http://www.ontario.ca/en/services_for_residents/053406
43. Why am I required to pay my 407 ETR fees?
As of November 24, 2005, any outstanding amounts on vehicle licence plates that have been submitted by 407 ETR due to non-payment of 407 ETR tolls and administrative fees must be paid prior to plate renewal.
The ministry must refuse to issue or renew a vehicle permit if outstanding 407 ETR toll amounts appear on our computer system.
If your tolls, administrative fees or interest are not paid within 90 days of your receiving a "Notice of Failure to Pay", 407 ETR may require the ministry to refuse to validate (renew) your vehicle permit, and, where the licence plate in respect of the unpaid tolls, administrative fees or interest becomes unattached from the vehicle or expired, refuse to validate (renew) another single vehicle permit issued to you and/or refuse to issue a vehicle permit to you.
You can pay your 407 ETR toll amounts directly to the 407 ETR or at any Driver and Vehicle Licence Issuing Office.
Customers who have a dispute with their 407 ETR toll amount must contact the 407 ETR directly:
Telephone: 1-888-407-0407
Email:
customerservice@407etr.com
Mail to: 407 ETR Concession Company Limited
6300 Steeles Avenue West
Woodbridge ON L4H 1J1
Website: 407etr.com