MPP financial disclosure in Ontario

The rule and who enforces it

Ontario's Members' Integrity Act, 1994 requires every Member of Provincial Parliament to give the Office of the Integrity Commissioner of Ontario a private statement of their finances once a year. The filing covers the member, their spouse or partner, and any children under 18.

The process is unusually hands-on. The Commissioner meets each MPP individually to go through the filing, which doubles as a chance to raise conflict-of-interest questions before they become problems. The Commissioner then prepares a public disclosure statement for each member and files it with the Assembly.

What the public statement shows

The public version is a filtered view of the private one. Two rules shape it:

• No dollar values. Public statements never carry amounts. They tell you an interest exists, not what it is worth.
• A $2,500 floor. They list every source of income above $2,500 for the year, and every asset or liability valued at $2,500 or more, with exceptions.

Those exceptions matter when you read a sparse statement. Property the member uses mainly as a home or for recreation is not listed. Neither are investments in broadly based open-ended mutual funds, which is why a member with substantial retirement savings can show very little. The Commissioner can also approve other holdings as excluded private interests. A short statement therefore means "little that the Act asks about", not "little".

Reading a statement well

1. Note the year. Statements are annual. A holding sold in March may sit on the record until the next filing cycle.
2. Watch for directorships and outside work.Ongoing roles outside the legislature are often more informative than a list of stocks, because they show where a member's time and obligations go.
3. Compare against the member's committees. An interest in a regulated sector becomes relevant when the member sits on the committee that scrutinises it. That is a reason to look closer, not a finding.
4. Go to the source before you conclude anything. The Commissioner publishes the statements at pds.oico.on.ca.

How Ontario compares

Federally, MPs file under the Conflict of Interest Code for Members and the Ethics Commissioner publishes a summary of each filing, described in our federal disclosure guide. The instinct is the same, but the formats differ, and so does what a machine can read. Ontario publishes structured statements that name specific holdings, which is why Ontario is the province where we hold the most per-member financial detail.

Other provinces run their own commissioners under their own statutes, and the gap between them is mostly one of format rather than principle: some publish searchable pages, others documents that have to be read one member at a time. Our coverage article sets out where each legislature stands today.

What Integrity Index holds for Ontario

As of September 2026 we hold disclosures for all 122 sitting MPPs, along with recorded divisions, office expenditures, political contributions and contract records, which makes Ontario the best-covered legislature on the site after the House of Commons. For 90 members we also hold the specific securities named in their statements, captured as holdings rather than as trades: Ontario publishes what a member owns, not when they bought or sold it.

Open any Ontario member from Members, or read How the Integrity Score Works to see how disclosure entries, including flagged ones, affect a grade. Every entry on a profile links back to the Commissioner's published statement.