Canadians Pay More and More Taxes — While Corporate Profits Hit Record Highs
Executive Summary
Individual Canadians continue to shoulder a disproportionately large share of the national tax burden. In 2025, federal personal income tax revenues reached approximately $234.3 billion, while corporate income tax revenues were only $97 billion, despite corporate profits hitting record levels of $676 billion.
This proposal is not anti-capitalist or anti-profit. Profitable corporations are essential to employment, investment, pensions, innovation, and national prosperity. The issue is not whether corporations should succeed, but whether the tax system remains proportionally fair during periods of record profitability.
Large corporations, particularly Canada’s Big Five banks, benefit from complex deductions, international tax planning, and effective tax rates often well below the statutory combined rate of 26.5%.
This paper argues for comprehensive reform: a national sliding (progressive) corporate tax system based on annual profits, a strong minimum tax floor, tighter but fair deduction rules, and severe restrictions on tax haven use. These changes should apply equally to all large corporations (income above $5 million), with full small business exemptions.
Such reforms can be implemented rapidly through the Fall 2026 federal budget, without constitutional amendments, and with strong provincial alignment.
The Problem: Unequal Tax Contributions
In 2015/16, individuals paid $145 billion in income tax while corporations paid $41 billion. The imbalance persists today. Large corporations — especially in banking — report record profits while using legitimate but aggressive tools (accelerated depreciation, forward-looking loan loss provisions, and offshore subsidiaries) to reduce their tax obligations.
Canada’s Big Five banks (RBC, TD, BMO, Scotiabank, CIBC) remain among the most profitable companies in the country. They operate subsidiaries in low-tax jurisdictions such as Ireland, Barbados, Cayman Islands, and Luxembourg, enabled by tax treaties. While the Global Minimum Tax (15%) now applies, it is insufficient to fully address fairness concerns.
Individuals face progressive personal tax rates with limited deductions. Corporations, by contrast, can significantly lower their effective rates. This creates a perception — and reality — that the rules are not the same for everyone.
International Comparisions
Why This Is Not Radical: International Context
Many OECD countries have already moved toward stronger minimum taxes and anti-avoidance measures. The global 15% Global Minimum Tax (Pillar Two) is now in force across dozens of countries. Several nations, including in the European Union, United Kingdom, and Australia, have introduced windfall or excess profit taxes on unusually high corporate profits. These trends show that modernizing corporate taxation to ensure fairness is a mainstream policy direction.
Core Principles for Reform
- Equality Among Large Entities: Reforms must apply uniformly to all corporations above the $5 million income threshold. No special treatment for banks or any other sector.
- Small Business Protection: Full exemption for businesses with annual income under $5 million to protect job creators and local economies.
- National Consistency: Federal leadership with provincial alignment through tax collection agreements.
- Fairness and Responsiveness: Tax liability should rise meaningfully in highly profitable years and ease in weaker ones.
- Anti-Abuse Without Overreach: Deductions must reflect real economic activity, not creative accounting.
Proposed Reforms
1. National Minimum Tax on Adjusted Book Profits
Introduce a floor of 18–20% on adjusted book income (profits as reported to shareholders, with limited adjustments). This prevents highly profitable corporations from reducing tax near zero through deductions.
2. Tighter but Flexible Deduction Rules
- Depreciation: Shift to realistic economic useful-life schedules instead of accelerated rates.
- Loan Losses/Provisions: Allow only actual realized losses from the prior year. Forward-looking expected credit losses (common under IFRS 9) would be restricted for tax purposes in high-profit years.
- International Operations: Require genuine economic substance. Pure tax-haven subsidiaries with minimal staff and disproportionate profits would face denial of treaty benefits.
3. Sliding (Progressive) Corporate Tax Rate Structure
The centrepiece of the proposal: a profit-responsive sliding scale.
| Annual Taxable Profit | Marginal Tax Rate | Notes |
|---|---|---|
| $0 – $50 million | 20% | Support for growing companies |
| $50M – $200 million | 26% | Near current standard rate |
| $200M – $1 billion | 30% | Higher contribution zone |
| $1 billion – $5 billion | 33% | Strong surtax on very large profits |
| Over $5 billion | 36% | Top rate for record years |
Combined with the existing federal 15% base + provincial rates + 1.5% bank surtax where applicable, adjusted for the new brackets.
Examples:
- A corporation with $120 million profit: Effective rate ~23.5%.
- A major bank with $4 billion profit (strong year): Effective rate ~31%.
- Same bank with $800 million profit (weaker year): Effective rate ~28.75%.
This structure directly rewards prudence in lower-profit years while requiring greater contributions during boom times.
4. Strengthened Anti-Tax Haven Measures
Build on the existing Global Minimum Tax by:
- Raising the effective floor for Canadian large corporations.
- Mandating full public country-by-country tax reporting.
- Denying benefits for entities lacking real economic activity.
Implementation Roadmap – As Soon As Possible
This package can move quickly:
- Announcement: Fall 2026 Federal Budget.
- Legislation: Included in the Budget Implementation Bill.
- Effective Date: Taxation years beginning January 1, 2028 (with some elements, like minimum tax expansion, phased in for 2027).
- Provincial Alignment: Encouraged via federal-provincial tax agreements. No constitutional change required.
- Phasing: Start with minimum tax and anti-haven rules in Year 1, followed by full sliding rates in Year 2.
The Department of Finance already has modelling capacity from the Global Minimum Tax rollout. Public consultations could occur immediately after budget announcement.
Expected Benefits
- Increased Revenue: Significant new funds in high-profit years for housing, healthcare, transit, and debt reduction.
- Greater Fairness: Large corporations contribute more proportionally, closer to the burden carried by individuals.
- Economic Stability: Lower rates in weak years reduce pressure during downturns.
- Reduced Distortions: Uniform rules across sectors prevent gaming the system.
- Transparency: Public reporting builds public trust.
Addressing Key Concerns
Pension Exposure
Canadian pension funds, including the CPP Investment Board and major private plans, hold significant stakes in Canadian banks and large corporations. These balanced reforms target excessive tax optimization rather than profits themselves, aiming to preserve long-term profitability and market stability for retirees.
National Debt and Fiscal Sustainability
Revenue from these reforms would contribute to responsible debt reduction, healthcare funding, infrastructure development, and addressing housing pressures. This is about restoring long-term national fiscal balance, not simply expanding government spending.
Addressing Counterarguments
Critics will claim higher taxes hurt competitiveness, increase consumer costs, or reduce lending. These risks are real but manageable:
- The proposed rates remain competitive with many OECD peers.
- Costs can be partially passed on, but excessive profits suggest room exists.
- Targeted design (profit-based, minimum floor) is superior to blunt rate hikes.
- Evidence from other countries shows well-designed minimum taxes raise revenue with limited economic harm.
Strong, transparent rules with economic substance tests protect legitimate business while closing loopholes.
Conclusion
A healthy economy requires more than profit alone. It requires public trust, fair rules, and a shared belief that success and responsibility must exist together. Canada does not need to punish achievement, innovation, or investment. But neither can it allow ordinary citizens to carry a growing share of the national burden while some of the country’s largest institutions benefit from increasingly complex advantages unavailable to the average taxpayer.
The long-term strength of any democracy depends not only on economic growth, but on whether its citizens believe the system remains fair, transparent, and accountable to all. A nation where responsibility is shared proportionally is far more stable than one where imbalance becomes normalized.
Reforming corporate taxation will not solve every challenge Canada faces, but restoring fairness is an essential place to begin.
Canada can maintain a competitive, pro-growth economy while demanding fairness from its largest and most profitable corporations. Individuals are not “above the law,” and neither should massive banks and corporations be when they earn record profits.
The time for meaningful reform is now. We urge the federal government to include this package in the Fall 2026 budget. A fairer tax system strengthens public services, reduces inequality, and reinforces confidence in our institutions.
Call to Action: Share this paper with your Member of Parliament, discuss it in your community, and demand accountability on corporate taxation. A more equitable Canada is possible.

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