What changed to credit rates?
Budget 2025 includes a middle-class tax cut, lowering the first federal marginal personal income tax rate from 15% to 14%, effective July 1, 2025. For the 2025 taxation year, this means a blended full-year rate of 14.5% due to the change happening mid-year. From 2026 onward, the rate remains 14%. (budget.canada.ca)
Correspondingly, the rate applied to most non-refundable personal tax credits (e.g., basic personal amount, age amount) will mirror this lowest rate—dropping to 14.5% for 2025 and 14% in 2026+. (canada.ca)
Why a Top-Up Tax Credit was proposed
Some taxpayers claimed costs or credits resulting in large non-refundable credits exceeding the first bracket threshold (in 2025: $57,375). In these cases, the drop in credit rate could result in higher tax payable, offsetting relief gained by the rate change. To prevent unintended penalties, Budget 2025 introduces a Top-Up Tax Credit which maintains the 15% rate on amounts of non-refundable tax credits exceeding that bracket threshold. (budget.canada.ca)
Compliance implications for taxpayers
- Income reporting matters: If you have large tuition, medical, or donations expenses triggering big non-refundable credits, check whether your claims cross the $57,375 threshold.
- Tax software and withholding: Employers might need to adjust source deduction rates after July 1, 2025. Ensure employer or payroll provider updates withholding tables accordingly.
- Planning deductions and timing: If facing large deductible expenses in 2025, consider whether deferring some might help avoid crossing thresholds and making the Top-Up necessary.
Practical examples
- Case A: John, a single individual, incurred $60,000 in medical expenses and tuition combined in 2025. His non-refundable credits exceed the $57,375 threshold. For the $57,375 portion, credits are calculated at 15%, for the excess ($2,625), the rate drops to 14.5% unless he qualifies for the Top-Up. The new Top-Up Credit will make up the shortfall by allowing the excess to still be treated at 15% for 2025.
- Case B: Maria has modest credits below that threshold; all her non-refundable credits will be subject to the new 14.5% rate in 2025—no top-up needed. From 2026 onward, math shifts to 14%.
What must taxpayers do
- Review expected deductions/credits for 2025. If expecting large expenses, plan whether to claim in full or split across years.
- Confirm whether your employer updated withholding after July 1, 2025—if not, you may have been over-withheld (and refund due) or under-withheld (liability ahead).
- Keep receipts and documentation—especially for major expenses like medical/donation/tuition—for accurate credit calculations.
- Use updated tax software—ensure it incorporates changes to marginal rates and the Top-Up credit once legislation passes.
These changes mean overall relief for many Canadians—but with nuances. If your non-refundable credits and taxable income structure are unusual, or if you expect large deductible/creditable amounts, consultation with a tax professional could save surprises.