DIY Incorporation vs. Using a Lawyer in Ontario: What's the Real Difference?

Online incorporation services make DIY incorporation vs lawyer Ontario look like a simple cost decision: pay less and file it yourself, or pay more and have someone else do it. The government filing fee is the same either way — what differs is everything that happens around the filing, and that's usually where the real difference in outcomes shows up.

This isn't an argument that DIY incorporation is always wrong. For some genuinely simple situations, it may be entirely adequate. But it's worth understanding exactly what a bare-bones filing does and doesn't give you before you decide.

What a DIY Filing Actually Files

Whether you use an online service or a lawyer, incorporating an Ontario corporation under the Business Corporations Act means filing articles of incorporation with the Ontario Business Registry for a government fee — currently $300, as of mid-2026, and worth confirming before you file since it can change. A federal incorporation under the Canada Business Corporations Act runs through a similar process with its own government fee. That base filing is largely the same no matter who does it.

What a Bare-Bones DIY Filing Typically Doesn't Include

A minimal online incorporation service generally stops at the articles. It often does not include:

• A share structure built for your actual plans. Off-the-shelf articles frequently use a single, simple class of shares. If you plan to bring in investors, split ownership unevenly, or plan for a future sale, a generic share structure can become a real obstacle later.
• By-laws tailored to how you'll actually run the corporation, rather than a boilerplate template.
• A shareholders' agreement. If there's more than one owner, an unsigned or missing shareholders' agreement — often a unanimous shareholder agreement, or "USA" — leaves basic questions unanswered until there's a dispute: what happens if a co-owner wants out, dies, or stops contributing?
• A properly organized minute book. Articles, by-laws, initial resolutions, and registers of directors, officers, and shareholders all need to exist and stay current. An incomplete minute book is one of the most common problems that surfaces later, often during financing or a sale.
• A considered choice between provincial and federal incorporation. The OBCA has had no director-residency requirement since mid-2021, while the CBCA generally requires at least 25% of directors to be Canadian residents — a meaningful difference for a business with foreign owners that a template service won't necessarily flag for you.

Where the Cost Difference Really Comes From

The government filing fee is fixed regardless of who submits it. The price difference between a low-cost online template service and a lawyer-assisted incorporation isn't really about the filing itself — it's about everything listed above: the advice on structure, the customized documents, and having someone available if a bank, investor, or co-owner later asks a question the bare articles don't answer.

A Side-by-Side Comparison

When DIY Might Be Enough — and When It's Risky

A bare filing may be reasonable for a single owner, no employees yet, no outside investors, and no immediate plans to bring in a co-owner or sell the business. Even then, it's worth having a lawyer at least review the structure once.

DIY becomes riskier once any of the following apply: there's more than one owner, you're raising money from investors, you're converting an existing sole proprietorship or partnership, you operate in a regulated industry, or you simply don't have time to learn what a proper minute book requires. In those situations, the gaps listed above tend to surface at the worst possible time — during a financing round, a dispute between co-owners, or a due diligence process for a sale.

Frequently asked questions