Tax Benefits and Disadvantages of Incorporating in Canada

Incorporating can cut the tax rate on business profits from over 50% to about 11%, but only on money you leave in the company, and the savings come bundled with real costs and CRA rules that most "incorporate now" articles skip. Here is the honest 2026 version from a CPA: what incorporation actually saves, what it costs, and the income level where it starts to make sense.

Last updated: August 2026. Rates verified against CRA published figures.

The Real Tax Benefits of Incorporating

1. A much lower tax rate on retained profits

A Canadian-controlled private corporation (CCPC) pays the small business rate on its first $500,000 of active business income: 9% federal plus a provincial rate, for a combined 11% in BC and 12.2% in Ontario. Compare that with personal marginal rates that reach roughly 53.5% at the top. The catch that headline comparisons hide: the low rate applies only to profit kept inside the corporation. Once you pay yourself, personal tax applies, and Canada’s integration rules are designed so that flowing everything straight out leaves you roughly where a sole proprietor started.

2. Tax deferral, the benefit that actually moves the needle

The real win is timing. If your business earns $200,000 and you only need $100,000 to live on, the other $100,000 stays in the corporation taxed at ~11-12%, instead of being forced onto your personal return the way sole proprietorship income is. That deferred difference, roughly 40 percentage points, keeps working for you: it can fund equipment, investments, or next year’s lean months, and you decide when (and in which low-income year) to draw it out. Deferral is not avoidance; personal tax comes due when the money comes out. But controlled timing is worth real money to anyone whose income fluctuates.

3. Choosing how you pay yourself

A corporation lets you mix salary (creates RRSP room and CPP pensionable earnings, deductible to the company) and dividends (no CPP cost, taxed at lower personal rates via the dividend tax credit). The optimal mix shifts with your income, your RRSP room, and provincial rates, and it is the single most common planning conversation we have with incorporated clients each year end.

4. The Lifetime Capital Gains Exemption on a future sale

If you eventually sell shares of a qualifying small business corporation (QSBC), the Lifetime Capital Gains Exemption shelters over $1.25 million of the gain per person, tax-free ($1,250,000 set in 2024, indexed again from 2026). Sole proprietors selling assets get no equivalent. Qualifying takes planning, mainly around the 24-month holding tests and keeping the company’s assets active, so the LCGE is a reason to incorporate early if a sale is ever plausible. Note the related good news: the proposed increase to the capital gains inclusion rate was cancelled in March 2025; the inclusion rate remains 50%.

5. Income splitting, with an honest asterisk

Older articles oversell this one. Since 2018, the tax on split income (TOSI) rules tax most dividends paid to family members at the top marginal rate unless an exception applies, the main ones being a spouse over 65, family members who work in the business roughly 20+ hours a week, or those holding 10%+ of a company that earns mostly non-service income. Splitting still works inside those lanes, but the days of freely sprinkling dividends to a lower-income spouse are over, and any article promising otherwise is out of date.

The Disadvantages Nobody Puts in the Headline

Cost and admin. Incorporating itself is cheap now (from about $49 net through Venn, or see every option priced), but the corporation files its own T2 return every year, keeps separate books, and typically adds $1,500 to $3,500 a year in accounting costs a sole proprietor does not pay.

Losses get trapped. Early-stage losses inside a corporation can only offset the corporation’s own income, unlike sole proprietorship losses, which deduct against your other personal income. If you expect losses for the first year or two and have salary income, incorporating too early wastes them.

Passive investment income erodes the small business rate. Once the corporation and associated companies earn more than $50,000 of passive investment income in a year, the $500,000 small business limit shrinks by $5 for every $1 over, disappearing entirely at $150,000. Large retained portfolios need planning, not just parking.

Payroll obligations if you take salary. Paying yourself a salary means registering a payroll account, remitting source deductions on time, and filing T4s; the penalties for late remittances are among the CRA’s least forgiving.

When Incorporating Actually Makes Sense

Our rule of thumb after seeing both sides for years: incorporation starts paying for itself when you can leave roughly $30,000 to $40,000 or more in the company each year, which for most owners means household spending is covered before the last $30,000+ of profit. Below that, the deferral benefit rarely beats the added accounting cost. Incorporate earlier anyway when liability exposure is real (contractors, anyone who can be sued), when clients require a corporation, or when a future sale makes the LCGE clock worth starting. Incorporate later, or not yet, if you expect early losses or you spend everything the business makes.

How to Incorporate (Without Overpaying)

The filing itself no longer justifies four figures. Venn incorporates Ontario businesses from about $49 net ($299 federal with NUANS included, minus a $250 credit once you fund the bank account it opens for you; details on the Venn incorporation deal page). Ownr is the fullest service at about $124 net, with the digital minute book, every province, and sole proprietorship registrations. DIY through the government portals runs $200 to $330 with zero help. All four routes, priced side by side, are in our cheapest way to incorporate guide. Whichever you choose, put the after-incorporation basics in place the same week: business bank account, bookkeeping, and the CRA program accounts.

Frequently Asked Questions

How much tax do you actually save by incorporating in Canada?

On profit retained in the corporation, the gap between the combined small business rate (11% in BC, 12.2% in Ontario) and top personal rates (~53.5%) is roughly 40 percentage points of deferral. On money you pay out to live on, integration means savings are small. The benefit scales with how much you can leave in the company.

At what income should I incorporate?

There is no CRA threshold; the practical test is retained profit. If you can consistently leave $30,000 to $40,000+ in the company each year, the deferral usually outruns the extra accounting cost. Liability protection or a future LCGE-eligible sale can justify incorporating sooner.

Can I split income with my spouse through a corporation?

Only within the TOSI exceptions: broadly, a spouse over 65, family members working ~20+ hours a week in the business, or holders of 10%+ of a corporation earning mostly non-service income. Outside those, dividends to family are taxed at the top rate.

Does incorporation avoid tax or just delay it?

Mostly delay, by design. The permanent wins are the Lifetime Capital Gains Exemption on a qualifying share sale (over $1.25 million per person) and rate arbitrage when you withdraw in lower-income years. The deferral itself is still valuable: money compounds pre-tax inside the corporation.

What does it cost to incorporate and stay incorporated?

Incorporating: from about $49 net with Venn (Ontario businesses), about $124 net with Ownr, $200 to $330 DIY, or $1,000+ with a lawyer. Staying incorporated: budget $1,500 to $3,500 a year for the T2 return, books, and filings, which is the number that should drive the decision.

What happened to the capital gains inclusion rate increase?

Cancelled. The proposed move from 50% to two-thirds was deferred in January 2025 and formally dropped on March 21, 2025. The inclusion rate remains 50%, and the LCGE increase to $1.25 million was kept and is indexed from 2026.

Do I need an accountant once I incorporate?

Realistically, yes. The T2 return, salary-vs-dividend planning, GST/HST, and payroll remittances are where incorporation’s savings are won or lost. Doing it badly costs more than the fees; this is the trade you accept for the lower rate.

Deciding whether this is your year to incorporate is a numbers question, not a vibes question. Run it past a CPA first; the review costs less than unwinding the wrong structure.