Corporate Tax Rate in Canada 2026 — Complete Guide

How Canadian Corporate Tax Works

Every corporation incorporated or resident in Canada is subject to federal corporate income tax administered by the Canada Revenue Agency (CRA). Most corporations also pay provincial or territorial corporate income tax to the province or territory where they have a permanent establishment. This results in a two-level tax system — federal tax plus provincial tax — applied to the corporation's taxable income for the year.

The federal government and each province or territory set their own corporate tax rates independently. Federal rates apply uniformly across Canada. Provincial rates vary significantly — from 2% (New Brunswick, Newfoundland and Nova Scotia on small business income) to 16% (Nova Scotia general rate). Understanding both levels is essential for calculating your true combined corporate tax rate.

The Canadian corporate tax system also creates a fundamental distinction between two types of corporations that determines which tax rates apply: Canadian-Controlled Private Corporations (CCPCs) and all other corporations. CCPCs access lower tax rates on active business income through the Small Business Deduction — one of the most significant tax advantages in the Canadian system.

Federal Corporate Tax Rates 2026

The federal corporate tax rate in Canada for 2026 is 15% on active business income for most corporations. However, Canadian-Controlled Private Corporations (CCPCs) benefit from the Small Business Deduction, which reduces the federal rate to 9% on the first $500,000 of active business income per year.

The federal rates are set by the federal government and apply equally to all Canadian corporations regardless of which province they operate in. Provincial rates are then added on top.

The Small Business Deduction (SBD) — Explained

The Small Business Deduction is a federal tax incentive that reduces the federal corporate income tax rate from 15% to 9% on the first $500,000 of active business income earned by a Canadian-Controlled Private Corporation (CCPC) in a tax year. This represents a tax saving of up to $30,000 per year at the federal level alone — making the SBD one of the most valuable provisions in the Canadian tax system for small business owners.

The SBD was introduced to support small businesses in Canada by providing a significantly lower tax rate on business profits up to the annual limit. The theory is that retained earnings taxed at the lower rate can be reinvested in the business to fund growth, hire employees and acquire equipment.

How the SBD Limit Works

The $500,000 SBD limit applies per associated group of corporations — not per corporation. If two or more corporations are associated with each other, they must share the $500,000 annual SBD limit. This prevents business owners from splitting income across multiple corporations to multiply access to the low rate.

Two corporations are generally associated if the same person or group controls both corporations, or if one corporation controls the other. The association rules are complex and apply even where control is indirect through a chain of corporations or through related individuals.

Passive Income and the SBD Grind

Since 2019, the federal government has imposed a rule that gradually reduces the $500,000 SBD limit for CCPCs that earn significant passive investment income. The policy was designed to discourage business owners from accumulating large investment portfolios inside their corporations to take advantage of the low CCPC tax rate.

The passive income grind works as follows: for every dollar of adjusted aggregate investment income (AAII) above $50,000, the SBD limit is reduced by $5. The SBD limit reaches zero when AAII reaches $150,000.

Provincial and Territorial Corporate Tax Rates 2026

Every province and territory in Canada levies its own corporate income tax on corporations that have a permanent establishment within the jurisdiction. The provincial rates are separate from and in addition to federal rates. Corporations that operate in multiple provinces must allocate income among those provinces based on a formula using payroll and gross revenue.

Provincial corporate tax rates vary considerably. Most provinces offer a reduced rate on active business income for CCPCs qualifying for the federal Small Business Deduction, mirroring the federal two-tier structure. A few provinces — Prince Edward Island notably — do not provide a separate small business rate.

Combined Federal + Provincial Corporate Tax Rates 2026 — All Provinces

The table below shows the combined federal and provincial corporate income tax rates for all Canadian provinces and territories in 2026. The SBD column applies to Canadian-Controlled Private Corporations on active business income within the annual SBD limit. The General column applies to income above the SBD limit and to non-CCPC corporations on all active business income.

What Is a Canadian-Controlled Private Corporation (CCPC)?

A Canadian-Controlled Private Corporation is a private corporation that meets all of the following conditions at the end of the tax year or at any time during the year:

• It is incorporated in Canada or is resident in Canada
• It is not a public corporation (its shares are not listed on a designated stock exchange)
• It is not controlled by one or more public corporations
• It is not controlled by one or more non-resident persons
• It is not controlled by any combination of public corporations and non-resident persons

Most small and medium-sized incorporated businesses in Canada — including owner-operated companies, professional corporations, holding companies and family businesses — qualify as CCPCs. CCPC status is essential because it unlocks the Small Business Deduction, refundable investment tax credits (including SR&ED at 35%), and the Lifetime Capital Gains Exemption on shares.

How Control Is Determined

Control for CCPC purposes is determined based on who holds the majority of the voting shares. A corporation is controlled by a non-resident or public corporation if that entity owns more than 50% of the voting shares. The analysis can be complex where shares are held through nominees, family trusts or tiered corporate structures — particularly in situations involving cross-border investors or employee share ownership plans.

Investment Income Tax Rates for Corporations

Passive investment income earned inside a corporation — interest, rent, royalties, foreign dividends, and gains on most investments — is taxed at significantly higher rates than active business income. The rationale is to prevent individual business owners from using corporations as tax-sheltered investment vehicles, taking advantage of the low CCPC rate to accumulate investment assets at a personal tax deferral.

The combined federal and Ontario provincial tax rate on passive investment income inside a CCPC is approximately 50.17% — comparable to the top personal tax rate. This high rate was designed so that tax-deferral from incorporating investment income would be minimal compared to earning it personally.

Refundable Dividend Tax on Hand (RDTOH)

The high tax rate on passive investment income inside a CCPC would create punishing double taxation if the same income were taxed again when paid out to shareholders as dividends. The Refundable Dividend Tax on Hand (RDTOH) mechanism prevents this double taxation by making a portion of the corporate tax paid on passive income refundable when the corporation pays taxable dividends to shareholders.

When a CCPC earns passive investment income, 30.67% of the tax paid is added to the corporation's Eligible RDTOH (ERDTOH) or Non-Eligible RDTOH (NERDTOH) account depending on the source. For every $2.61 of taxable dividends paid, $1 is refunded to the corporation from the RDTOH account. The shareholder pays personal tax on the dividend, completing the integration cycle.

ERDTOH vs. NERDTOH — The 2019 Split

Since 2019, the RDTOH account has been split into two pools to prevent non-eligible dividend "washing" — where corporations converted high-taxed investment income into low-taxed eligible dividends. Understanding which pool applies and what type of dividend is required to generate the refund is now an important part of corporate tax planning for CCPCs with passive income.

Capital Gains Tax Rate for Corporations

When a corporation disposes of a capital property at a gain, only a portion of the gain is included in taxable income — the capital gains inclusion rate. For gains realised before June 25, 2024, the inclusion rate is 50%. For gains realised on or after June 25, 2024, the federal government proposed an inclusion rate of 66.67% for corporations, though the legislation had not received Royal Assent as of January 2026.

The capital gains inclusion rate does not apply to the Lifetime Capital Gains Exemption (LCGE) available to individual shareholders on qualifying small business corporation shares, qualified farm property and qualified fishing property. The LCGE is a personal tax exemption — not a corporate deduction — and applies when the shareholder personally sells QSBC shares, not when the corporation sells assets.

Corporate Tax Instalments

Most corporations are required to make quarterly corporate income tax instalment payments throughout the year. Instalments are due on the last day of each month of the quarter, or the last day of each month for monthly instalments. The requirement to pay instalments is based on whether the corporation's prior year corporate taxes owing exceeded $3,000.

There are three methods for calculating instalment amounts — corporations may use whichever method results in the lowest quarterly payment:

• Prior Year Method: Instalments equal to one-quarter of the prior year's total taxes payable
• Current Year Estimate: Instalments based on an estimate of the current year's taxes
• Two-Year Average: Average of the prior two years' taxes payable divided by four

Interest is charged daily at the CRA prescribed rate on any instalment shortfall. The prescribed rate for 2026 is set quarterly — it is typically 2–3% above the Bank of Canada overnight rate. For the first $3,000 of corporate taxes payable per year, instalments are not required and the full amount may be paid on the final balance due date.

T2 Filing Deadlines and Penalties

The T2 corporate income tax return is due six months after the end of the corporation's fiscal year. However, any corporate income tax owing must be paid earlier — within two months of the fiscal year end for general corporations, and within three months for most CCPCs.

This creates an important distinction: the return can be filed later than the tax is due. Filing the return on time while payment was not made results in interest — but not a late filing penalty. Failing to file the return on time results in both penalties and interest on any balance owing.

Salary vs. Dividend — Corporate Tax Planning for Owner-Operators

One of the most important tax planning decisions for the owner of a CCPC is how to extract funds from the corporation. The two primary options are salary (deductible to the corporation, taxable personally as employment income) and dividends (paid from after-tax corporate profits, taxed at lower personal rates with the dividend tax credit). Each has different implications for corporate tax, personal tax, CPP contributions and RRSP room.

How Tax Integration Works

The Canadian tax system is designed around the principle of integration — meaning that income earned through a corporation and then distributed to a shareholder should result in approximately the same total tax as if the income had been earned directly by the individual. When the system works as designed, the combined corporate and personal tax on dividend income roughly equals the personal tax that would have been paid if the income had been earned directly.

In practice, the integration is not perfect — there are advantages and disadvantages to both salary and dividends depending on the individual's total income, province of residence, RRSP room, CPP goals and the corporation's overall tax position. The optimal mix varies year to year and should be modelled with a licensed CPA before each year-end.

Tax Planning Strategies to Reduce Your Corporate Tax Rate

Understanding the rates is the first step. Actively planning to access the lowest available rate — and to maximise the benefit of the SBD — is where the real savings are generated.

1. Maintain CCPC Status

CCPC status is the gateway to the 12.2% combined rate in Ontario. Any change in share ownership that results in a non-resident or public corporation acquiring control can eliminate CCPC status and the SBD in a single transaction. Review your shareholder agreements, investment agreements and any external funding arrangements to ensure CCPC status is preserved, particularly before taking on international investors or venture capital.

2. Manage Passive Income Below $50,000

The passive income grind starts at $50,000 of AAII per year. If your CCPC is approaching this threshold, consider distributing investment income as dividends, investing through a separate holding company that is not associated with your operating company, or moving investments to personal accounts where the SBD grind does not apply. The difference in corporate tax cost between a 9% and 15% rate on $500,000 of income is $30,000 per year — significant enough to justify restructuring investment holdings.

3. Bonus Down to the SBD Limit

If your corporation's active business income exceeds $500,000 in a year, consider paying a management bonus to the owner-manager to reduce corporate taxable income to $500,000 before year-end. This ensures all corporate income is taxed at the SBD rate (12.2% in Ontario) rather than the general rate (26.5%). The bonus is taxable personally but the combined tax on a salary is designed to approximate the general corporate rate plus personal dividend tax — so the arbitrage is often favourable.

4. Accelerate Capital Cost Allowance

The Accelerated Investment Incentive and full expensing rules allow immediate 100% deductions on certain capital purchases. Investing in eligible equipment, zero-emission vehicles or technology assets before year-end creates large deductions that reduce the current year's taxable income — potentially keeping income within the SBD limit.

5. Consider Fiscal Year-End Timing

Unlike individuals who are fixed to a December 31 personal tax year, corporations can choose any month-end as their fiscal year-end at the time of incorporation. A March 31 fiscal year-end means the T2 is due September 30 and tax is due June 30 — providing significantly more time to plan and pay compared to a December 31 year-end with a March 31 tax payment deadline.

6. Use a Holding Company Structure

A holding company can receive dividends from an operating company completely tax-free (inter-corporate dividend deduction) and then invest those funds as a separate entity. This allows passive investment income to be isolated in the holding company without affecting the operating company's SBD limit in the current year — though the passive income grind may apply to the holding company separately.