Taxation of Investment Income in a Canadian Corporation: A Comprehensive Guide

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Taxation of Investment Income in a Canadian Corporation: A Comprehensive Guide

Sebastien Prost, CPA
Table of Contents

In Canada, the taxation of investment income within a corporation is an intricate process that reflects the necessity to balance the competitive corporate environment with fair tax practices. Investment income, otherwise referred to as passive income, includes earnings such as interest, dividends, and capital gains. Corporations, particularly Canadian-controlled private corporations (CCPCs), are focused on by tax authorities due to their prevalent role in the Canadian economy. They are subject to a unique set of tax regulations that differ significantly from those applied to personal income.

The tax rates on corporate investment income vary by province and territory, but across the board, they are generally higher than personal marginal tax rates. This design is deliberate, intended to discourage passive investment holding within corporations and to promote reinvestment into active business operations that can fuel economic growth. The federal government enforces a distinct tax structure for investment income generated by corporations, which includes refundable taxes that aim to integrate the tax system and prevent deferral advantages.

It is important to understand that the federal corporate tax rate on passive investment income reaches up to 38.67% after certain refundable taxes are taken into account. Provincial tax rates come on top of this, which can result in combined tax rates exceeding 50% in some jurisdictions. However, mechanisms such as the Refundable Dividend Tax On Hand (RDTOH) offer corporations a partial refund of these taxes upon the distribution of taxable dividends, which helps to alleviate the tax burden and supports a balance between taxation on corporate and personal investment income.

Fundamentals of Corporate Taxation in Canada

Corporations in Canada face a distinct tax structure when it comes to investment income. Investment income, often categorized as passive income, includes earnings such as interest, dividends from foreign entities, rental income, and capital gains.

Canadian-controlled private corporations (CCPCs) benefit from a reduced tax rate on business income due to the small business deduction. However, this preferential rate does not extend to investment income. Passive income is taxed at a higher rate to discourage investment holding within corporations and to encourage reinvestment in active business operations.

The federal tax rate for corporate investment income stands at 38.7%. Notably, this includes a portion that is refundable under certain circumstances. Here’s the breakdown:

  • 28% is the base federal tax on passive investment income (38% basic rate less 10% abatement).
  • A refundable tax of 10.67% is added, entering into the Refundable Dividend Tax On Hand (RDTOH) account, which can be recovered through dividend distribution to shareholders.

Provincial taxes also apply, and rates vary by province. The combined federal and provincial tax rate often exceeds 50%.

Corporations, especially CCPCs, can receive a refund of the taxes paid on investment income when they distribute dividends to shareholders. This is due to the RDTOH regime, aimed to integrate the tax system and avoid double taxation.

Investment income and its taxation within a corporation are pivotal considerations for corporate planning and strategy. They influence decisions on surplus management, income distribution, and long-term financial planning.

Characteristics of Investment Income

In Canadian corporations, investment income encompasses various types of earnings, each subject to distinct tax treatments. It is critical to understand the differences to manage corporate finances effectively.

Types of Investment Income

Canadian corporations can earn investment income through several avenues.

  • Interest: Money earned from savings accounts or debt investments.
  • Dividends: Distributions of profits by other corporations, which may not be taxable under Part I tax when received by another taxable Canadian corporation. If received from a non-connected corporation, those dividends would be subject to Part IV tax.
  • Capital Gains: Profits realized from the sale of investments or property, only half of which is taxable.
  • Rental Income: Profits generated from the rental of real property.

Each type presents unique considerations for corporate financial planning and tax liability.

Tax Rates for Different Types of Income

The taxation rates on investment income in a Canadian corporation are not uniform and depend on the income type.

  • Passive Income: Typically taxed at the higher corporate rate, which can exceed 50% in many provinces.
  • Active Business Income: Subject to lower rates, encouraging business reinvestment.

Federal and provincial or territorial taxes apply, with differing rates across jurisdictions. Corporations may receive a partial refund on taxes paid upon distribution of earnings.

Calculating Taxable Investment Income

In a Canadian corporation, determining taxable investment income involves identifying gross earnings, deducting expenses, and applying necessary adjustments. This ensures compliance with Canadian tax laws and optimizes tax positions.

Gross Investment Income

Gross investment income in a corporation encompasses all earnings before any deductions are made. This includes dividends, interest, rents, and capital gains from all sources, both domestic and international. For instance:

  • Dividends: If a corporation receives dividends from non-connected Canadian entities, a portion of the taxes paid on this income can be refundable.
  • Capital Gains: Only 50% of capital gains are included in taxable income, as they are subject to a 50% inclusion rate. The other 50% can be paid tax-free out of the capital dividend account.
  • Rental Income: For rental properties, this would mean income earned from renting the property.

Net Investment Income

Net investment income is calculated by subtracting allowable expenses from the gross investment income. Allowable expenses are those that are directly related to the earning of investment income. For example:

  • Interest and Carrying Charges: Corporations may deduct interest on money borrowed to earn investment income and other carrying charges.
  • Management and Administration Fees: Fees related to the management of investments can be deducted from gross investment income to arrive at the net investment income.
  • Rental Expenses: For rental properties, this would mean all expenses associated with earning income from the property. This includes but is not limited to, interest, utilities, maintenance, insurance, capital cost allowance (CCA) and property taxes.

Tax Credits Related to Investment Income

Corporations may apply certain tax credits related to investment income in certain situations. Some key points:

  • Refundable Dividend Tax on Hand (RDTOH): Corporations may receive a refund of taxes paid on investment income when dividends are paid out to shareholders assuming that they previously generated RDTOH. RDTOH is generated when additional taxes such as, the refundable Part I tax and Part IV tax paid on dividends received, are paid on investment income.

Tax credits, loss carry-backs and carry-forwards, and other corporate attributes can also affect the calculation of taxable investment income. It’s crucial for a corporation to consider all applicable adjustments to ensure accurate tax reporting and optimize their tax situation.

Taxation of Dividends

In Canada, the taxation of dividends within a corporation is an involved process, incorporating factors such as the classification of dividends and the application of specific tax credits.

Eligible vs Ineligible Dividends

Eligible Dividends are those distributed by a Canadian corporation out of profits taxed at the general corporate tax rate, making them eligible for an enhanced dividend tax credit (DTC) when received personally. Investors find these dividends favorable due to the larger DTC which reduces personal tax liability.

Ineligible Dividends, sometimes known as “ordinary dividends,” come from corporate income taxed at lower rates than the general corporate tax rate or from corporations not eligible for the small business deduction. They carry a smaller DTC and therefore result in higher tax obligations at the individual shareholder level.

Dividend Tax Credit

The Dividend Tax Credit (DTC) in Canada is a non-refundable tax credit that applies to both eligible and ineligible dividends received by individuals from Canadian corporations. Its primary purpose is to alleviate the effects of double taxation.

For Eligible Dividends, the DTC accounts for the higher rate of corporate tax already paid on the income distributed as dividends. This results in a marginal tax rate for these dividends that is typically lower than that of regular employment income.

For Ineligible Dividends, the DTC reflects income taxed at the lower corporate rate. Although the DTC for ineligible dividends is lower than that for eligible dividends, it still serves to offset the individual’s tax liability on these dividends.

Capital Gains and Losses

In Canadian corporations, capital gains and losses are treated distinctively in terms of taxation. It is crucial to understand the specific inclusion rates for capital gains and the rules around carrying over capital losses.

Capital Gains Inclusion Rate

In Canada, 50% of capital gains realized by a corporation are included in income and subject to tax. This inclusion rate effectively means that half of the gains are exempt from taxation. The taxable portion is known as the taxable capital gain and it is taxed at the corporation’s passive income tax rate. This policy aims to encourage investment by providing a tax advantage to capital gains over other forms of income.

The non-taxable half of the capital gain is not left without purpose. It is added to the Capital Dividend Account (CDA), which can be paid out to shareholders tax-free, under certain conditions.

Capital Losses Carryover

Should a corporation incur capital losses, they can only be applied against capital gains, not other income. These losses are not entirely lost if they exceed the current year’s gains. A corporation can carry back capital losses to any of the three preceding years to offset capital gains in those years. If there are still unused losses, they can be carried forward indefinitely to offset future capital gains.

This rule ensures that corporations have a mechanism to manage years with poor investment performance against those with better outcomes, thus providing some balance and fairness in the treatment of investment income and losses over time.

Interest Income and Expenses

The taxation of interest income within a Canadian corporation is distinct from personal taxes. Understanding these regulations ensures compliance and can help in better tax planning for corporations.

Interest Income Taxation

Corporations in Canada are subject to tax on interest income, which falls under the category of passive investment income. The standard corporate tax rate on passive income, including interest, is high – with federal and provincial taxes combined, it can exceed 50% depending on the province. However, a portion of these taxes is refundable through the Refundable Dividend Tax on Hand (RDTOH) account upon the distribution of dividends to shareholders. For example, 30.67% of taxes paid are added to the corporation’s RDTOH. Tax rates might be lower in certain cases; for instance, Canadian-Controlled Private Corporations (CCPCs) in British Columbia can have access to an active business income tax rate of 11% on the first $500,000, assuming the interest is incidental to active business operations.

Deductible Investment Expenses

Corporations can deduct a variety of expenses that are directly related to the generation of interest income, decreasing the overall taxable amount. These expenses must be reasonable and incurred to earn investment income. Some common deductible investment expenses for corporations include:

  • Management and safekeeping fees: Fees paid for the management of investments or the safekeeping of securities.
  • Interest expenses: Interest paid on money borrowed to earn investment income.
  • Legal and accounting fees: Professional fees directly related to investment activities are commonly deductible.
  • Other carrying charges: Such as custody fees or charges for investment advice related to the corporation’s investment portfolio.

It is imperative for corporations to thoroughly document these expenses to substantiate their claims for deductions.

Integration of Corporate and Personal Taxation

The Canadian tax system employs mechanisms to integrate corporate and personal taxes, aiming to alleviate the burden of double taxation on income earned through corporations.

Integration Principle

The integration principle in Canadian taxation seeks to create a level playing field, such that tax implications are similar whether income is earned and taxed within a corporation or directly by an individual. To achieve this, the Canadian tax system has structures in place to offset the disadvantage of double taxation – where corporate investment income is taxed at the corporate level and again at the personal level when distributed as dividends. The goal is for the combined taxes paid corporately and personally to approximate the taxes that would have been paid if the income were earned directly by the individual.

RDTOH – Refundable Dividend Tax on Hand

The RDTOH is a mechanism designed to support tax integration by providing a refundable tax credit to Canadian-controlled private corporations (CCPCs) when they distribute dividends to shareholders. The tax system tracks taxes paid on investment income at the corporate level through the RDTOH account; when taxable dividends are paid out to shareholders, a portion of the RDTOH is refunded to the corporation. This prevents the same income from being excessively taxed in the hands of the shareholder.

Refundable Rate
Up to 38.33%
Paid on investment income to build RDTOH balance
Refunded to the corporation upon dividend distribution to the shareholder


CCPCs accumulate a RDTOH balance by paying tax on investment income, which is then refunded at a fixed rate when they pay out dividends, effectively integrating corporate and personal tax liability.

Foreign Investment Income

Canadian corporations with international investments need to navigate complex tax implications on their foreign investment income. This section breaks down the main aspects of taxation and credit mechanisms affecting such income.

Taxation of Foreign Income

Foreign investment income earned by a Canadian Controlled Private Corporation (CCPC) from a controlled foreign affiliate is subject to Canadian taxation. Passive income, such as interest and foreign income, falls within this category and is heavily taxed, comparable to the highest personal marginal tax rate which can exceed 50% in many Canadian provinces. The federal corporate tax rate on this type of income is 38.2⁄3%, which includes a 28% federal tax and a 10.2⁄3% additional refundable tax.

Type of Income
Federal Tax Rate
Additional Refundable Tax
Total Federal Tax
Passive Income


The refundable portion of the tax has significant implications for the timing and strategy concerning dividend payments to shareholders.

Foreign Tax Credits

To mitigate the double taxation scenario, Canadian corporations can leverage Foreign Tax Credits (FTC). They are designed to credit foreign taxes paid on income earned abroad against Canadian taxes owing on the same income. For example, if a Canadian corporation pays a 25% foreign tax on its investment income from another country, this amount can be credited against the Canadian tax payable on that income.

It is critical for corporations to understand their eligibility for foreign tax credits and correctly apply them to optimize their tax position. The calculation often requires balancing the foreign tax paid with the Canadian tax rate to ensure the credit does not exceed the Canadian tax on the foreign income.

Understanding these tax mechanisms is vital for Canadian corporations to effectively manage their international investments and tax strategy.

Special Considerations

When managing a Canadian corporation’s finances, one must carefully navigate two critical tax areas that can significantly affect investment income: The Small Business Deduction (SBD) and the application of tax on split income (TOSI) rules.

Small Business Deduction Effects

The Small Business Deduction (SBD) provides a reduced corporate tax rate on the first $500,000 of active business income for Canadian-controlled private corporations (CCPCs). However, this benefit comes with restrictions when it comes to passive investment income. Specifically, if a corporation’s passive investment income exceeds $50,000 in a given year, the SBD limit begins to decrease. The SBD is eliminated entirely when passive investment income reaches $150,000 in the same year. This is crucial because it means active business income over the reduced SBD limit will be taxed at higher corporate tax rates.

Income Sprinkling and TOSI Rules

The Tax on Split Income (TOSI) rules are designed to prevent individuals from reducing their tax burden by distributing corporate dividends to family members who are subject to lower personal tax rates. Under TOSI, certain types of income, including dividends from private corporations, may be taxed at the highest marginal tax rate. It is essential for corporations and their shareholders to understand TOSI and structure their income distribution strategies accordingly to avoid unexpected tax implications. The rules are particularly important when considering that dividends given to family members who are not actively engaged in the business could be subject to these heightened rates.

Tax Planning Strategies

Effective tax planning strategies for corporations can significantly reduce the tax liability associated with investment income. These strategies revolve around timing and distribution of income.

Timing of Income Recognition

Corporations have some flexibility in determining when to recognize certain types of income. By carefully timing the recognition of investment income, a corporation might defer taxes or take advantage of lower tax rates in a different period. For example:

  • Deferral: A corporation may choose to realize capital gains in a year where taxable income is projected to be lower, thus benefiting from a potentially lower tax bracket.
  • Accelerated Deductions: Corporations can also consider timing deductions, such as capital cost allowance, to offset taxable income.

Income Splitting Techniques

Income splitting can be an advantageous way for corporate business owners to reduce their overall tax burden by distributing income among family members who are taxed at lower rates. Techniques include:

  • Dividends: Paying out dividends to family members who hold shares and are in lower income tax brackets. This is subject to TOSI rules so consulting a tax professional is recommended.
  • Salaries and Wages: Employing family members and paying reasonable salaries for actual work performed can distribute income and lower the corporation’s taxable income.

Each strategy should be considered within the context of the corporation’s overall financial position and in alignment with current tax regulations. Consulting with a tax professional is advisable to ensure compliance and optimize these strategies.

Compliance and Reporting Requirements

Canadian corporations must adhere to strict compliance and reporting standards for the taxation of investment income. These requirements ensure transparency and accurate tax reporting.

Filing Deadlines

Corporations are expected to report investment income tax annually. The filing deadline for corporate income tax returns is six months after the end of the corporation’s tax year. It’s imperative to be aware of the exact due date, as it varies from one corporation to another.

Required Documentation

A corporation must maintain comprehensive records to support their tax filings, including but not limited to:

  • Financial statements
  • Investment account summaries
  • Proof of income received (e.g., T5 slips)
  • Documentation of capital gains or losses

Documentation must be kept for a minimum of six years from the end of the last tax year they relate to. Failure to provide the required documentation can result in penalties.

Frequently Asked Questions

This section addresses common inquiries regarding the taxation of investment income within Canadian corporations, aiming to clarify complex taxation rules and practices.

How is passive investment income taxed for a Canadian-controlled private corporation (CCPC)?

Passive investment income in a CCPC is taxed at higher rates compared to active business income. It receives no tax advantage of the lower small business rate and is subject to combined federal and provincial/territorial taxes that can approach 50%.

What are the current federal corporate tax rates for investment income in Canada?

As of the knowledge cutoff, federal tax rates for investment income in corporations stand at 38.7%. However, after the federal tax abatement and refundable taxes, the effective federal tax rate is approximately 15%.

Are there any differences in investment income taxation for corporations in different provinces, such as Alberta versus Quebec?

Yes, provincial corporate tax rates on investment income differ across Canada. For instance, Alberta typically offers lower provincial tax rates on investment income compared to Quebec, affecting the overall combined tax rate.

How does the taxation of interest income differ from capital gains for a corporation in Canada?

Corporations in Canada pay tax on 100% of their interest income. However, only 50% of capital gains are taxable. This distinction makes capital gains a more tax-efficient form of investment income for corporations.

Can you explain the dividend refund mechanism for Canadian corporations receiving investment income?

The dividend refund mechanism allows Canadian corporations to recover part of the taxes paid on passive investment income when they distribute dividends to shareholders. This mechanism is intended to prevent double taxation of investment income.

What tax implications should a Canadian corporation consider when investing in foreign markets?

Canadian corporations earning income from foreign investments need to consider potential withholding taxes imposed by the foreign country. They must also understand the impact on their Canadian tax situation, including the foreign tax credit that may offset some of the international taxes paid.

Sebastien Prost, CPA

Written by Sebastien Prost, CPA

Seb Prost, a CPA with over 10 years of experience in taxation and accounting, offers a unique blend of insights from his time at the CRA and his experience in public practice. Originally from QC and now based in Nelson, BC, he specializes in guiding Canadian startups, SaaS companies and other online businesses for all of their accounting and taxation needs.

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