Tax Planning

Lower Tax Burden Ahead: Understanding the New First Marginal Tax Rate in Canada

Canada’s Budget 2025 introduced a **cut to the lowest federal income tax rate**, reducing it from 15% to 14% effective mid-2025—the largest personal tax relief for lower-income Canadians in years.

By NomadicTax Research Team • 5-8 min read • March 17, 2026

## What’s Changing and Why It Matters Canada’s Budget 2025 proposes a reduction in the **first marginal federal income tax rate** from **15% to 14%**, effective **July 1, 2025**. Due to the change happening halfway through the taxation year, the full-year rate for 2025 will be **14.5%**, and beginning in **2026**, it will be at **14%**. ([canada.ca](https://www.canada.ca/en/revenue-agency/services/tax/individuals/frequently-asked-questions-individuals/canadian-income-tax-rates-individuals-current-previous-years.html?utm_source=openai)) This change affects not just income tax on earnings but also most **non-refundable tax credits**, which are calculated based on the lowest tax rate. ([budget.canada.ca](https://www.budget.canada.ca/2025/report-rapport/chap3-en.html?utm_source=openai)) ## Who Benefits Most - **Lower- to middle-income earners** will see immediate relief. For those in the lowest tax bracket (taxable income up to approximately $57,375 in 2025), this results in a benefit of up to **$420 per person** in 2026. ([budget.canada.ca](https://www.budget.canada.ca/2025/report-rapport/chap3-en.html?utm_source=openai)) - **Two-income families** could save roughly **$840 a year**. ([budget.canada.ca](https://www.budget.canada.ca/2025/report-rapport/chap3-en.html?utm_source=openai)) - Values of non-refundable tax credits, such as those for donations or medical expenses, may change depending on the portion that falls within the lowest tax rate. ([canada.ca](https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/corporations/whats-new-corporations.html?utm_source=openai)) ## Actionable Insights: What You Should Do Now 1. **Estimate your tax bracket** for 2025. If your taxable income stays within or near the lowest bracket, expect some relief. If you exceed the threshold, the impact is less pronounced. Use online calculators updated for the 2025 tax brackets. 2. **Optimize deductions and credits** that rely on the lowest rate. For example, if part of your charitable donations or medical expenses fall into amounts that would be taxed at the lowest rate, you might plan donations in 2025 versus 2026 to maximize value. 3. **Watch withholding**. Since withholding rates will adjust after July 1, 2025, your paycheque deductions may drop. Be prepared for changes in cash flow mid-year. 4. **Tax planning** for pension income or retirement contributions: deductible contributions reduce taxable income, so shifting income years or income type may affect how much benefit you derive from lower rates. ## Key Technical Details to Remember - The rate cut is part of **Bill C-4, “Making Life More Affordable for Canadians Act”**. It’s still before Parliament but expected to proceed. ([budget.canada.ca](https://www.budget.canada.ca/2025/report-rapport/chap3-en.html?utm_source=openai)) - Non-refundable credit rates move in tandem with the lowest bracket rate. That means the dollar value of some credit claims may change beyond just income taxes. - Bracket thresholds and other rates are subject to **inflation adjustment**, which may slightly shift thresholds for 2026. Stay updated. ## Example Scenario Suppose Jane earns **$50,000** in taxable income in 2025. Under the old system at 15%, her tax on the portion up to $57,375 would be **$7,500** (15% of $50,000). With the new rate (14.5% for all of 2025, reflecting the mid-year change), she’d pay **$7,250**, saving **$250**. In 2026, the saving increases as the full rate drops to 14%. ## Final Thoughts This change is one of the most significant marginal rate reductions for lower incomes in recent years. Whether you're an employee, freelancer, retiree, or dependent claimed on someone else’s return, understanding how and when your taxable income falls into the lowest bracket—and how your credits apply—can unlock real savings. **Plan ahead**, evaluate your income path for 2025 and 2026, and consider timing deductions or income-generating events accordingly.