December is one of the most critical periods for tax planning in Canada. Many tax-saving strategies must be completed before December 31; otherwise, the opportunity is lost until next year.
Year-end planning can be divided into three steps:
- Conduct a comprehensive “tax health check.”
- Clear all actions that must be completed before year-end
- Based on your family profile, create a simple and executable action plan
- Start with a Year-End “Tax Health Check”
The core objective is simple:
Prevent large unexpected tax payments next spring when filing your 2025 return, and avoid unnecessary interest or cash-flow stress.
- Prepare three essential documents
- Latest pay stub
- Review year-to-date (YTD) income and income tax already withheld
- Last year’s Notice of Assessment (NOA)
- Verify RRSP contribution room and other key data
- Estimated 2025 additional income
- Rental income, self-employment earnings, side business income, interest, dividends, etc.
- Estimate your annual tax liability
- Log in to your CRA My Account, or use a reliable online tax calculator to estimate 2025 total tax payable.
- Compare it with YTD tax already withheld on your pay stub.
Watch for the following:
- Withholding too low → Likely a significant tax bill next year
- Withholding too high → You are providing the government with interest-free cash; not ideal for tight cash flow
- Adjust if necessary
- Update your TD1 form with your employer (marital status, dependents, tuition credits, disability credits, etc.)
- Or request payroll to increase withholding for the remaining pay periods to smooth out expected tax owing.
Tip: If you plan to make a large RRSP contribution before the 2026 deadline, include that in your year-end tax estimate.
- Year-End Checklist: Items That MUST Be Completed by December 31
- Tax-Loss Selling for non-registered investments
If you hold non-registered investments with unrealized losses, year-end is the time to consider strategic Tax-Loss Selling:
Key mechanics:
- Sell investments with losses to realize a capital loss
- Losses can offset capital gains from the same year
- Excess losses can be:
- Carried back three years, or
- Carried forward indefinitely
Important rules to avoid traps:
(1) Only applies to non-registered accounts
- Trades inside RRSP, TFSA, FHSA do not generate capital gains/losses for tax purposes
- Transferring shares “in-kind” into RRSP/TFSA does not create a deductible loss
(2) Beware of the Superficial Loss Rule
A loss is denied if you or your spouse repurchases the same security within 30 days before or after the sale.
(3) FX conversion matters
Gains/losses for foreign securities (e.g., U.S. stocks) must be calculated in CAD.
A USD investment showing a loss in USD could still be a gain once converted.
(4) Settlement timing
Many securities settle on T+2.
To ensure the sale counts for 2025, trade at least two business days before Dec 31.
- FHSA: Open the account before year-end
For first-time homebuyers, the FHSA is one of the most powerful tools in 2025:
- $8,000 annual contribution room
- $40,000 lifetime limit
- Contributions are tax-deductible
- Growth is tax-free
- Withdrawals for qualifying home purchases are also tax-free
Open an FHSA before December 31, even if you contribute only $100.
This locks in the full $8,000 contribution room for the year; unused room carries forward.
- RRSP / TFSA: Conduct a year-end “tax bracket review.”
(1) Determine your 2025 tax bracket
- High-income earners benefit more from RRSP deductions
- Those with lower current income or potentially higher future tax rates may prefer TFSA contributions
(2) Use all three accounts strategically
RRSP
- Best for those with high current income and lower expected retirement income
- 2025 contribution limit: 18% of prior year earned income (max $32,490)
TFSA
- Ideal for fluctuating income or long-term investing
- 2025 contribution room: $7,000（with lifetime cumulative room exceeding $100,000 for many residents）
FHSA
- Priority order when saving for a home:
- FHSA first
- Then the balance between RRSP vs TFSA based on tax bracket
- Make sure all deductible/creditable receipts are gathered
Common items that improve tax outcomes:
- Childcare expenses
- Eligible medical expenses
- Tuition and education-related fees
- Charitable donations (year-end lump-sum donations may yield higher credits)
If planning a large charitable donation, note that new AMT rules may impact the expected tax savings.
III. Capital Gains & One-Time Income: Should You Split Across Years?
Capital gains are still 50% taxable. If you plan in 2025 to:
- Sell rental or vacation property
- Sell large amounts of stocks, funds, or crypto
- Exercise significant employee stock options
- Sell shares of a qualifying small business and use the LCGE
You should run year-by-year comparisons:
- Scenario A: All transactions in 2025
- Scenario B: Spread between 2025 and 2026
- Combine with complementary strategies:
- Tax-Loss Selling
- RRSP contributions
- Planned charitable giving
If your year involves major capital gains, large deductions, rental or business losses, significant stock option exercises, or major charitable donations, a professional AMT projection before year-end is highly recommended.
- Review Family Benefits and Disability Support
Many benefits depend on prior-year net family income, including:
- GST/HST Credit
- Canada Child Benefit (CCB)
- Canada Disability Benefit
For moderate-income families, RRSP contributions may reduce net income enough to increase benefits significantly.
Year-end checks:
- Ensure marital status, address, and children’s information in CRA My Account are up to date
- If 2025 income will be much higher than 2024, consider RRSP/FHSA contributions to reduce net income
- For households with disability needs:
- Confirm eligibility for the Disability Tax Credit (DTC)
- Review eligibility for the Canada Disability Benefit
- Year-End Planning Examples for Different Household Types
- Single employee
- Run tax health check
- Prioritize TFSA; use RRSP only if income is high
- Consider small-scale Tax-Loss Selling
- Dual-income family with children
- Gather childcare, medical, and tuition receipts
- Estimate the impact of the family’s net income on benefits
- Consider RRSP for the higher-income partner
- First-time homebuyers
- Open FHSA and lock in the 2025 room
- Prioritize FHSA, then TFSA
- RRSP for those in higher tax brackets
- Business owners / self-employed
- Estimate 2025 business income
- Consider income splitting within the family
- Review long-term planning if planning to use LCGE in the future
- A Simple Year-End Checklist for December 2025
- Complete your tax health check
- Review RRSP / TFSA / FHSA contribution status
- Review non-registered investments for potential Tax-Loss Selling
- Gather all receipts for deductions and credits
- Review eligibility for benefits & disability programs
- Run year-end planning for major capital gains or one-time income + AMT modelling