Ontario guide · Record keeping

What an Ontario corporation's minute book has to contain

"Minute book" isn't a term the Business Corporations Act uses. The Act lists records a corporation must keep, and the minute book is where most companies keep them. If a bank, a buyer, the CRA or a shareholder asks to see your corporate records, this is what they mean.

7 min read · Updated October 23, 2026

Records the OBCA requires

Section 140 of the OBCA sets out the records a corporation has to keep. In practice, a complete minute book for a small Ontario corporation contains:

  • The articles and any amendments, the certificate of incorporation, and the by-laws
  • Any unanimous shareholder agreement
  • Minutes of shareholders' meetings and shareholders' resolutions
  • Minutes of directors' meetings and directors' resolutions
  • A register of directors with each director's name, residential address and the dates they became and stopped being a director
  • A securities register recording the shares issued, who holds them and every transfer
  • A register of individuals with significant control, required since January 1, 2023
  • Adequate accounting records

Where the records have to be kept

The records must be kept at the registered office or at another place in Ontario the directors designate. Many corporations keep the minute book at their lawyer's office, which is fine as long as the directors have designated it.

The Act allows records to be kept electronically, as long as they can be reproduced in readable form within a reasonable time. A digital minute book meets the requirement if it's complete and accessible.

Who is entitled to see them

Directors can examine all the records. Shareholders and creditors can examine certain records during normal business hours, including the articles and by-laws, shareholder minutes and resolutions, the directors register and the securities register. Directors' minutes and the accounting records are generally for directors only.

Why it matters even when nobody is checking

Nobody inspects a small corporation's minute book on a schedule. Problems show up later: a bank won't open an account without proof of who the directors are, a buyer's lawyer finds share issuances that were never approved, or the CRA asks for the resolution that declared a dividend. Missing records can usually be fixed with ratifying resolutions, but it's slower and more expensive than keeping them current.

Common questions

Do I need a lawyer to keep a minute book?

No. The Act requires the records to be kept; it doesn't require a lawyer to keep them. Many small corporations keep their own and use a lawyer for unusual transactions.

How long do corporate records have to be kept?

Most minute book records are kept for the life of the corporation. Some records have specific retention periods, such as ISC register entries, which must be kept for six years after an individual stops being an individual with significant control. Tax records have their own rules under federal tax law.

Is an Ontario not-for-profit's minute book different?

Yes. ONCA corporations keep a members register instead of a securities register, and the ONCA has its own list of required records. See our guide to OBCA and ONCA records.

Related in Carta

Keep your minute book in Carta

Registers, resolutions, documents and the annual paperwork for your Ontario corporation, in one place. Organizations created during the open beta keep a free perpetual license.

General information about Ontario law, not legal advice. Check your situation with a lawyer or accountant.

Sources: Business Corporations Act (Ontario), R.S.O. 1990, c. B.16.