
The Ontario Not-for-Profit Corporations Act, 2010 (ONCA) came into force on October 19, 2021, and gave existing Ontario nonprofits a three-year transition period that ended on October 19, 2024. If your organization hasn’t transitioned yet, it isn’t too late. This guide walks you through each step, from gathering your documents to filing articles of amendment.
ONCA is the law that governs nonprofit corporations incorporated in Ontario. It replaced the former Corporations Act for nonprofits and aims to:
For a plain-language overview, see What Is ONCA?
ONCA applies to all nonprofit corporations incorporated under Ontario law, including charities, social clubs, professional associations and service organizations.
It does not apply to:
The three-year transition period ended on October 19, 2024. Organizations that did not transition by then:
The deemed amendments are the problem. They can leave your governing documents unclear, because your written bylaws may no longer match the rules that legally apply. That uncertainty causes problems at member meetings, board elections and votes, and it raises questions from banks, funders and the CRA. Formally amending your articles and adopting ONCA-compliant bylaws removes that uncertainty.
For more on what missing the date means, see Is It Too Late to Comply with the ONCA?
Before you update your documents, it helps to know what changed:
Collect:
If documents are missing: you can request copies of your letters patent from ServiceOntario. Check your minute book, past secretaries’ files and your lawyer’s files for bylaws. Record what you find in a simple inventory that lists each document and its approval date, so you know which version is current.
Your letters patent will be replaced by articles once you file articles of amendment. Review:
ONCA requires your bylaws to address key matters, including:
Where your bylaws are silent, ONCA’s default rules apply. Many organizations also add provisions on electronic meetings, director qualifications and term limits, committees, conflicts of interest, member discipline and indemnification. For guidance on who drafts these changes, see Who Is Responsible for Creating ONCA Amendments to My Bylaws?
ONCA gives members, including those in so-called “non-voting” classes, important rights. All members are entitled to vote separately as a class on certain fundamental changes, such as changes affecting their class, amalgamation, the sale of all or substantially all of the corporation’s property, and dissolution.
When you review your structure:
See also Membership Structures Under the ONCA.
Director qualifications under ONCA. A director must be:
Directors do not need to be members unless your bylaws require it. Your bylaws can add qualifications, but cannot remove these basic requirements.
Officers. ONCA does not require specific officers, but most organizations appoint a chair or president, a secretary and a treasurer. Officers are generally appointed by the board, and their duties should be set out in the bylaws.
Meetings. Electronic participation is permitted, subject to the bylaws. A written resolution of directors must be signed by all directors, and directors cannot vote by proxy.
File your articles of amendment online through the Ontario Business Registry. You will need your corporation’s company key to file. If you don’t have one, order it in advance, because it is mailed to your registered office address. A government filing fee applies, and once the filing is accepted you can download your certificate and amended articles.
Registered charities: after filing, send the amended articles and new bylaws to the CRA Charities Directorate through My Business Account so its records stay current.
See also What Are the Financial Reporting Obligations Under the ONCA?
ONCA requires corporations to keep their articles, bylaws, minutes and resolutions, along with registers of members, directors, officers and debt obligations, and adequate accounting records. Ontario nonprofits must also file an annual return through the Ontario Business Registry. Registered charities must still file the T3010 with the CRA within six months of their fiscal year-end.
Charities must satisfy both ONCA and CRA requirements:
When ONCA and CRA requirements differ, follow the stricter one. For registration basics, see our guide to registering a charity in Canada.
ONCA came into force on October 19, 2021, and the three-year transition period for existing Ontario nonprofits ended on October 19, 2024.
No. You can still file articles of amendment and adopt ONCA-compliant bylaws. Doing so is recommended, because non-conforming provisions in your existing documents were deemed amended as of October 19, 2024, which can leave your governing documents unclear.
No. ONCA does not dissolve nonprofits for missing the transition date, and there are no fines.
No. Federal nonprofits are governed by the CNCA. However, a federal nonprofit operating in Ontario may need to register extra-provincially.
It isn’t legally required, but reviewing purposes, membership structures and charity requirements involves legal judgment. A charity and nonprofit lawyer can help you avoid filings that create new problems, especially for registered charities.
B.I.G. Charity Law Group helps Ontario nonprofits and charities review their governing documents, draft ONCA-compliant articles and bylaws, and file articles of amendment. Call 416-488-5888 or book a free consultation.
For a quick refresher on officers’ roles under ONCA, watch ONCA 101: Rules for Officers of Ontario Nonprofits.
The material provided on this website is for information purposes only.. You should not act or abstain from acting based upon such information without first consulting a Charity Lawyer. We do not warrant the accuracy or completeness of any information on this site. E-mail contact with anyone at B.I.G. Charity Law Group Professional Corporation is not intended to create, and receipt will not constitute, a solicitor-client relationship. Solicitor client relationship will only be created after we have reviewed your case or particulars, decided to accept your case and entered into a written retainer agreement or retainer letter with you.

DOV GOLDBERG, J.D. is a lawyer at B.I.G. Charity Law Group and has dedicated his career exclusively to Charity and Not-for-Profit Law for over a decade. Dov guides charities, foundations, and non-profit organizations through every stage of the registration process, offering practical legal advice with a focus on compliance, governance, and long-term success. Known for his hands-on approach and deep knowledge of CRA requirements, Dov is committed to helping clients build strong, sustainable, and legally sound organizations.