Big news if you run an incorporated business in Ontario.

As of July 1, 2026, the Ontario provincial small business corporate income tax rate officially dropped from 3.2% to 2.2%. Combined with the unchanged federal small business rate of 9%, your total combined rate is now 11.2% — down from 12.2%. That one percentage point translates to up to $5,000 in real, annual tax savings for eligible corporations, and over 375,000 Ontario businesses are expected to benefit.

If you're incorporated and this is the first you're hearing about it — you've got some catching up to do. Let's get into it.

What Actually Changed

The Ontario government made this change as part of its 2026 Budget, and it's now officially in effect — administered by the Canada Revenue Agency (CRA) through your T2 corporate return. Here's the simple math:

• Old combined rate: 9% (federal) + 3.2% (Ontario) = 12.2%
• New combined rate: 9% (federal) + 2.2% (Ontario) = 11.2%
• Applies to: The first $500,000 of active business income for eligible Canadian-Controlled Private Corporations (CCPCs)

Ontario also raised the provincial small business income limit from $500,000 to $600,000, creating a new $100,000 income band — between $500K and $600K — taxed at a combined rate of just 17.2% instead of the general rate of 26.5%. That's an additional saving of approximately $9,300 annually for corporations earning in that range.

Who Qualifies?

To benefit from the reduced rate, your corporation must be a Canadian-Controlled Private Corporation (CCPC) — incorporated in Canada and controlled by Canadian residents. You also need to:

• Earn active business income (not passive investment income like dividends, interest, or rental income)
• Have taxable capital employed in Canada below $50 million (phase-out begins at $10 million)
• Not be classified as a Personal Services Business (PSB) — a classification that strips you of the small business deduction entirely and can push your effective corporate rate above 40%

Most incorporated freelancers, consultants, tradespeople, shop owners, and service providers qualify. If you're not sure whether you do, that's a question worth thousands of dollars a year to get answered properly.

How Much Do You Actually Save?

Let's make this concrete:

• On $200,000 of active business income → approximately $2,000/year saved
• On $300,000 of active business income → approximately $3,000/year saved
• On $500,000 of active business income → approximately $5,000/year saved
• On the $500K–$600K band → approximately $9,300 additional savings on that income slice alone

That's money staying inside your corporation — available to reinvest, hire, or simply build your financial cushion. Not a rounding error.

The Proration Trap: Watch Your Fiscal Year-End

Here's where a lot of business owners are going to get tripped up. Because the rate changed on July 1, 2026 — not January 1 — corporations with fiscal years that straddle this date need to apply two different rates to their income.

If your corporation runs on a calendar year (January 1 to December 31), here's how your T2 filing looks for 2026:

• January 1 – June 30 (181 days): taxed at 3.2% Ontario rate
• July 1 – December 31 (184 days): taxed at 2.2% Ontario rate

Your tax software or accountant will prorate this — but only if your books are clean and your income is properly recorded. A messy ledger means a messy T2. And with the CRA's prescribed interest rate on overdue corporate taxes sitting at 7% for Q3 2026, you really don't want to be filing late or inaccurately.

The Dividend Planning Window Closing in 2027

This part doesn't get nearly enough attention — and it should.

Effective January 1, 2027, Ontario's non-eligible dividend tax credit rate drops from 2.9863% to 1.9863%. What does that mean in plain language? The personal tax cost of paying yourself dividends from your corporation goes up next year.

That makes 2026 a critical planning year. If your situation calls for paying yourself some additional non-eligible dividends, doing it before December 31, 2026 — before that credit rate drops — could make a meaningful difference to your after-tax take-home.

The right salary-versus-dividend mix depends on your total income, RRSP contribution room, CPP obligations, and how much you plan to leave in the corporation. But the math has changed, and your plan should reflect that. This is worth a dedicated conversation with your accountant before year-end.

Your Action Checklist: What to Do Right Now

1. ✅ Confirm your CCPC and SBD eligibility — make sure your corporation actually qualifies for the small business deduction (check PSB risk, associated corporation rules, and passive income levels)
2. ✅ Update your 2026 corporate tax projections — recalculate estimated taxes owing using the new 11.2% combined rate
3. ✅ Flag the mid-year proration — if your fiscal year straddles July 1, 2026, confirm your tax preparer has the correct rate split
4. ✅ Review your salary vs. dividend strategy — get a 2026 versus 2027 comparison before year-end; the dividend credit window is closing
5. ✅ Keep your books clean and current — the CRA charges 7% interest on overdue corporate taxes this quarter; clean records protect you
6. ✅ Talk to your bookkeeper or accountant now — not in March when it's too late to plan, but right now while you still have options for 2026

Don't Leave $5,000 on the Table

Tax cuts like this one are only valuable if you actually capture them. That means clean books, accurate T2 filings, and proactive planning — especially with a dividend credit change coming in 2027 that makes this year's decisions matter even more.

Whether you're a long-time incorporated business owner or a newcomer to Canada who recently incorporated, the team at Stiplify Books is here to help. We specialise in bookkeeping and accounting services for Canadian small businesses, self-employed professionals, and immigrant entrepreneurs from coast to coast.

Visit stiplifybooks.ca to learn more or book a consultation — because $5,000 in annual savings is worth making sure you're actually capturing it.

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Meta Title: Ontario Small Business Tax Rate Cut 2026: What CCPC Owners Must Do Now | Stiplify Books
Meta Description: Ontario dropped its small business corporate tax rate from 3.2% to 2.2% on July 1, 2026. Combined rate is now 11.2% — up to $5,000 in annual savings. Here's who qualifies, how much you save, and what to do before 2027.
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