Operating Expense (OpEx)

Accounting

An operating expense is a day-to-day cost of running a business, such as rent, salaries and utilities, deducted in full in the period it is incurred.

Operating expenses are the ongoing costs of keeping the business running, rent, wages, utilities, insurance, marketing, office supplies, that are consumed within the period and deducted in full immediately, unlike capital expenditures that are spread over years.

On the income statement, operating expenses are subtracted from gross profit to reach operating profit. Controlling OpEx is central to profitability, and distinguishing a true operating expense from a capital cost determines whether you deduct it now or over time.

Example

A company's monthly rent, staff wages and hydro bills are operating expenses, deducted in full each period. A new $20,000 server, by contrast, is capital expenditure deducted gradually.

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Generally yes, in the period incurred, provided they are reasonable and for earning business income. Some, like meals at 50%, have specific limits.
Operating expenses are day-to-day costs deducted immediately; capital expenditures buy long-lived assets and are deducted over years through depreciation or CCA.
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More Operating Expense (OpEx) Questions Canadians Ask

The questions Canadians actually search on this topic, answered plainly. Browse every question in the Canadian tax answers directory.

A tax return is the annual filing that reports your income, deductions and credits to the CRA so the final tax for the year can be settled. Payers withhold tax during the year and the return reconciles that against what you actually owe, producing either a refund or a balance to pay. For 2025 returns filed in 2026, refunds usually arrive in about two weeks for an online return, while a paper return runs on a considerably longer standard because it is handled manually.

Taxable income is what is left after you total the income the tax rules include and subtract the deductions you are allowed. Employment and self-employment earnings, most pensions, EI and CPP benefits, interest, dividends, rental profit, the taxable portion of capital gains, RRSP and RRIF withdrawals and most taxable benefits from work all go into the total. Tax is then calculated on that figure and reduced by non-refundable credits such as the basic personal amount.

That figure is your payroll deduction rate, not a tax bracket. Canada's federal rates for 2026 start at 14% and rise through 20.5%, 26% and 29% to 33%, and what leaves your cheque blends federal and provincial tax with CPP at 5.95% and EI at $1.63 per $100 of insurable earnings for 2026. Payroll also annualises each cheque, so a bonus or overtime period is taxed as if every period looked the same. Filing squares it up.

Taxable wages are the part of an employee's pay that income tax is calculated on: salary, hourly wages, overtime, bonuses, commissions, most allowances and the value of taxable benefits such as personal use of a company vehicle. They are not the same as gross pay, and they differ again from pensionable and insurable earnings, which drive CPP and EI. Box 14 of the T4 reports employment income for the calendar year.

Udit Gupta, founder of Tax Filings Canada

Reviewed and fact-checked by Udit Gupta

Ex Big 4 — Ernst & Young, Deloitte · International & cross-border tax specialist · CPA Canada (In-Depth Tax Program) · Chartered accountant, ICAI & MIA

Udit Gupta has over 15 years of experience helping corporations and business owners with corporate structuring, corporate tax filing, bookkeeping, payroll, GST/HST, cross-border tax and CRA representation. Big 4 trained at Ernst & Young and Deloitte, and qualified as a chartered accountant in India and again in Malaysia, he founded his accounting practice in 2014 to serve entrepreneurs, startups and non-resident business owners across Canada. View full member bio.

The Institute of Chartered Accountants of India — member 521458 · Malaysian Institute of Accountants — member CA 44667 · Ex Big 4: Ernst & Young, Deloitte · CPA Canada (In-Depth Tax Program), completed 19 Dec 2023 · In-Depth GST/HST Part I, 12 Jul 2022 · Part II, 5 Jul 2023

Editorial policy. Every page is researched against primary sources — the Income Tax Act, CRA publications and CPA Canada guidance — and every rate or threshold is stated with the tax year it applies to.

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