Mail delivery delay
A disruption in Canada Post services will delay both incoming and outgoing ServiceOntario mail.
To mitigate these delays, clients are advised to utilize online services whenever possible. If online options are unavailable, it is recommended to explore courier services as an alternative for sending documents via Canada Post during this period.
Business Numbers: The OBR can take up to 48 hours to display a new Business Number once registration is completed, and Amalgamations may take up to 1 month.
The Ministry of Public and Business Service Delivery and Procurement (MPBSDP) is aware of an issue impacting the ability to obtain Business Numbers (BNs) for Sole Proprietorships and Limited Partnerships. MPBSDP will be sending notifications with the BN to the official email addresses of entities registered in 2025, where the BN is not displayed in OBR. These notifications will be sent via email from OBR Business Numbers Notification. MPBSDP appreciates your patience as we work to send BN notifications to these entities.
OBR and CRA System Integrations : Provides information on the OBR data exchange with CRA.
Company Key (CK) Guide :Use this guide to request your CK. For further details, please consult the Company Key notice.
Future Dated and Consecutive Filings :Provides information about effective dates for future dated and consecutive filings, along with a list of Ministry holidays. Note :Filings submitted on holidays will be reviewed the next business day.
Expansion of Service Providers : Effective February 1, 2025, the Ministry expanded the list of Service Providers. If you plan to engage the services of a Service Provider or intermediary, provide them with the Company Key
If you do not have a previous ONe-Key account, you can create a new My Ontario Account to access ServiceOntario Account services.
For more help setting up your account, please refer to the My Ontario Account help guide.