Inventory of Government-Based Family Justice Services

Interjurisdictional Support Orders Unit (ISO Unit) (Ontario)


Type of service
Inter-jurisdictional Support

Services offered
The ISO Unit of the Family Responsibility Office administers the Interjurisdictional Support Orders Act, 2002 (ISO Act). The ISO Act streamlines the process for obtaining, varying and enforcing support orders involving one party who lives in Ontario and one party in a reciprocating jurisdiction.

The ISO Act applies to the registration of orders for enforcement in Ontario made in reciprocating jurisdictions, and to the establishment or variation of an order when one party lives in Ontario and the other party lives in a reciprocating jurisdiction. It does not apply to any support applications made under the federal Divorce Act or section 44 of Ontario's Family Law Act.

Once an order has been registered, established, or varied using the ISO Act, it can be filed with the Family Responsibility Office (FRO) for enforcement. The FRO will enforce such an order the same way it would enforce an Ontario order.

The ISO Unit also administers sections 18 and 19 of the Divorce Act and is responsible for processing all provisional orders made under that Act in Ontario by sending them to the appropriate Canadian province or territory for confirmation. Similarly, the ISO Unit accepts all provisional orders made under the Divorce Act from other Canadian provinces and territories and sends them to the appropriate court in Ontario for confirmation.

All the Canadian provinces and territories, the United States of America, and a number of other countries are reciprocating jurisdictions to Ontario.

Pilot or ongoing service
Ongoing service

Department responsible
Ontario Ministry of Community and Social Services, Family Responsibility Office

How to access this service
By telephone: (416) 240-2410 or toll free 1-800-463-3533
TTY: 1-866-545-0083
By fax: (416) 240-2401
By Mail:
Family Responsibility Office
Interjurisdictional Support Order Unit
P.O. Box 600
Steeles Avenue West Post Office
Toronto ON M3J 0K8

[ Service(s) offered ]

English and French

Information about the ISO Unit is available on the Family Responsibility Office website at:
Ontario's forms and guidelines for applicants in Ontario who wish to establish or vary an order are available on the internet at:

No charge

Governing legislation/legislative authority
Interjurisdictional Support Orders Act, 2002. Available online at

The list of reciprocating jurisdictions is contained in Ontario Regulation 53/03 and is available online at

Contact person(s)
416-240-2401 (fax)
ISO Call Centre: 416-240-2410 or 1-800-463-3533

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