Alberta has some of the lowest business taxes in Canada. But a low tax rate only helps if you're actually claiming everything you're allowed to. Every year, we see Calgary business owners miss out on deductions simply because they didn't know about them, or assumed they didn't qualify.
Here are seven deductions that are commonly missed, and what they could mean for your 2026 tax bill.
The rate: Alberta's small business tax rate is 11% (9% federal plus 2% provincial) on the first $500,000 of active business income for an eligible Canadian-controlled private corporation (CCPC). Income above that is taxed at about 23%.
Where owners miss out: This isn't something you claim on a line, it's a rate you have to protect. Your $500,000 limit can shrink if your corporation's taxable capital passes $10 million, or if its passive investment income passes $50,000. For every $1 of passive investment income above $50,000, your limit shrinks by $5, and it disappears completely once that income reaches $150,000.
Context: The 2026 Alberta Budget, tabled February 26, 2026, made no changes to corporate tax rates or the $500,000 small business limit, even with a projected provincial deficit.
Who qualifies: Sole proprietors and partners who use part of their home as their main place of business, or regularly meet clients there, can deduct a share of their home costs on Form T2125.
What you can deduct: Heat, electricity, home insurance, cleaning supplies, and property taxes, based on the percentage of your home used for business. If you own your home, mortgage interest and CCA also qualify for self-employed individuals.
Where owners miss out: This deduction can't create or increase a business loss. But any amount you can't use this year carries forward to future years, as long as you still qualify. Many owners forget to track and apply that carry-forward, quietly losing value year after year.
The 2026 rates: The CRA's allowance is 73¢ per kilometre for the first 5,000 business kilometres, and 67¢ per kilometre after that.
Where owners miss out: Employees reimbursed by a corporation can be paid tax-free at these rates. Self-employed individuals use a different method — they deduct actual vehicle costs (fuel, insurance, maintenance, and depreciation) based on the percentage of driving that's for business, backed by a logbook. Mixing up the two methods is a common mistake, and a missing logbook is one of the top issues the CRA flags.
Also note: For a standard passenger vehicle (Class 10.1) bought on or after January 1, 2026, the maximum depreciable cost is $39,000 before tax — up from $38,000 in 2025.
The basics: Equipment, vehicles, computers, and furniture usually can't be written off all at once. Instead, they're depreciated over several years based on CRA's rules.
What's available: Most new equipment purchases qualify for the Accelerated Investment Incentive, which suspends the usual "half-year rule" and gives a larger first-year deduction.
Where owners miss out: Many businesses default to slow, standard CCA claims without checking whether the accelerated incentive applies to their purchase — leaving cash in the CRA's hands instead of theirs.
The rule: Meals, drinks, and entertainment related to your business — client dinners, staff events, business travel — are generally 50% deductible.
Where owners miss out: Professional development gets underclaimed often. Course fees, conference registration, membership dues, and fees for consultants or business coaches all qualify, as long as they relate to your work. Bookkeeping, legal, and accounting fees are fully deductible (no 50% limit).
Incorporated business owners should check that their small business deduction limit hasn't shrunk due to passive income or taxable capital, and think about whether the Accelerated Investment Incentive applies to a big purchase they're planning.
Sole proprietors and self-employed individuals should double-check their home office and vehicle claims, these are the two spots where the wrong method (or no method) tends to cost the most.
At Jensen CPA, we help Calgary business owners find every deduction they're entitled to, protect their small business deduction, and file with confidence. If you'd like a review of your 2026 tax position, get in touch for a consultation.
