How to Get a Bigger Tax Refund in Canada

1. Claim Medical Expenses Strategically

The medical expense tax credit is one of the most underused in Canada — and one of the most flexible. You can claim any 12-month period that ends in the tax year, not just the calendar year. This means you can choose the 12 months that gives you the largest claim.

More importantly, you can combine family expenses and have the lower-income spouse claim them all. Because the threshold is 3% of net income, a lower income means a lower threshold — which means more of your expenses become claimable.

People routinely miss: dental work, prescription glasses, therapy sessions (including psychologists and registered counsellors), physiotherapy, hearing aids, fertility treatments, and prescription medications. Keep receipts throughout the year — even small amounts add up across a family.

2. Time Your RRSP Deduction

Making an RRSP contribution and claiming the deduction are two separate decisions. You can contribute this year to lock in your room and earn tax-sheltered growth, but delay claiming the deduction until a future year when your income is higher.

An RRSP deduction saves you your marginal tax rate. At 30% marginal rate, a $10,000 deduction saves $3,000. At 43%, it saves $4,300. If you expect a raise, a bonus year, or to sell a rental property next year, holding the deduction can significantly increase its value.

Also check your unused contribution room in CRA My Account — many Canadians have accumulated tens of thousands of dollars in unused room from prior years that they are not aware of.

3. Bundle Charitable Donations

The federal charitable donation credit has a two-tier structure: 15% on the first $200 donated, and 29% (or 33% for high earners) on everything above $200. This means it is more efficient to cluster donations into fewer years than to donate small amounts annually.

If you donate $100/year, you receive a 15% credit each year. If you instead donate $300 every three years, you receive 15% on the first $200 and 29% on the remaining $100 — a meaningfully better outcome for the same total generosity.

You can also carry donations forward up to five years. And if both spouses donate, one spouse should claim all donations combined to maximize the amount above the $200 threshold at the higher rate.

4. Split Pension Income With Your Spouse

If you or your spouse receive eligible pension income (RRIF withdrawals, annuities from registered plans), you can allocate up to 50% of it to the lower-income spouse for tax purposes. No actual money moves — it is a paper allocation on your returns.

The tax savings can be substantial. If one spouse is in a 43% marginal bracket and the other is in a 20% bracket, moving $20,000 of pension income to the lower-income spouse saves approximately $4,600 in taxes. The election is filed on Form T1032.

5. Claim the Home Office Deduction Properly

If you worked from home for more than 50% of the time for at least four consecutive weeks, you can claim work-from-home expenses. There are two methods, and most people take the easier one without checking if the other would be better.

The flat rate method gives you $2 per working day — simple, no receipts required. The detailed method lets you claim your actual expenses: rent, electricity, heating, internet, and maintenance, proportional to your workspace. If you rent a larger apartment and have a dedicated office space, the detailed method often produces a claim three to five times larger.

For the detailed method, you need a T2200 signed by your employer confirming you were required to work from home. Most employers will provide this on request.

6. Use the Canada Training Credit

Introduced in 2020, the Canada Training Credit (CTC) has been quietly accumulating at $250 per year in the accounts of eligible Canadians aged 26 to 65. You can use it to offset up to 50% of eligible tuition and training fees paid to qualifying educational institutions.

Check your Notice of Assessment or CRA My Account to see your accumulated CTC balance. Many Canadians who took any professional development, certificate courses, or continuing education since 2020 can claim this credit and are unaware it exists.

7. Check Your Last 10 Years

If any of the strategies above apply to you but you missed them in prior years, you can still recover that money. The CRA allows adjustments to prior-year returns going back 10 years. You file a T1-ADJ request through CRA My Account using the ReFILE service, or by mailing the form to your tax centre.

The CRA will review the adjustment and, if approved, issue you the additional refund plus interest calculated from the original filing date. The process typically takes four to eight weeks.

Given that the average missed deduction amounts to nearly $3,000 per year, checking even two or three prior years can be worth thousands of dollars.

The Systematic Approach

Rather than trying to remember which credits apply to you, the most reliable approach is to review your completed return against the full list of available deductions for your province and situation. Over 400 distinct credits, deductions, and optimizations exist in the Canadian tax system — each with specific eligibility rules and amounts.

The goal is not to find exotic loopholes. It is simply to make sure the straightforward, everyday deductions that apply to your life are actually on your return.