Form T2125, Statement of Business or Professional Activities, is the schedule self-employed Canadians attach to their T1 return to report business earnings and claim deductions, and completing it means working through identification in Part 1, gross income in Part 3, cost of goods sold in Part 3D, operating expenses in Part 5, home office and vehicle calculations, and capital cost allowance in Area A before the net figure flows onto your T1. Here is how each part works and where the common mistakes hide.
Who Uses Form T2125
Sole proprietors and freelancers are the main filers. If you run any unincorporated business, full-time or as a side activity, and you operate with a reasonable expectation of profit, your net income belongs on Form T2125.1Canada Revenue Agency. T4002 Self-Employed Business, Professional, Commission, Farming, and Fishing Income That includes gig income like ridesharing, accommodation sharing, peer-to-peer selling, and social media content creation.
Partnership members use the form when the partnership is not required to file a separate partnership information return. If you have both business income and professional income, or two separate businesses, you need a separate Form T2125 for each.2Canada Revenue Agency. Completing Form T2125
The form draws a line between business income and professional income. Business income covers revenue from selling goods or providing general services. Professional income applies to fees earned through specialized expertise, such as accountants, engineers, lawyers, or consultants. The distinction determines which section of Part 3 you complete.
Part 1: Identification, Industry Code, and Accounting Method
Part 1 asks for your business name, address, fiscal period, and a six-digit industry code from the North American Industry Classification System (NAICS). The CRA uses this code to compare your income and expenses against similar businesses, so picking the closest match to your primary source of revenue reduces the chance of being flagged for review.3Canada Revenue Agency. Industry Codes
You also select an accounting method. Most self-employed individuals must use the accrual method, which records income when earned and expenses when incurred, regardless of when cash actually moves. The cash method is limited to farmers, fishers, and self-employed commission agents.4Canada Revenue Agency. Accounting Methods So a web designer who invoiced in December but was paid in January reports that income in the December tax year. Use the same method year over year to avoid discrepancies.
Part 3: Reporting Gross Income
Part 3 captures all revenue before deductions. For business income, enter your total gross sales, commissions, or fees at line 3A, including any GST/HST you collected or were owed.5Canada Revenue Agency. Part 3A – Business Income If you have professional income instead, leave Part 3A blank and complete Part 3B. Report both monetary and non-monetary receipts. Bartering a service for goods still counts as income at fair market value.
If you use the Quick Method of accounting for GST/HST, amounts 3D through 3F on the form adjust your reported income for the difference between what you collected and what you actually remit. Below $30,000 in worldwide taxable sales over four consecutive calendar quarters, you are a small supplier and can skip GST/HST registration entirely, but you still report your gross income the same way.6Canada Revenue Agency. When to Register for and Start Charging the GST/HST
Part 3 also asks about other business income, such as insurance proceeds, bad debts recovered, or investment income earned inside the business. Those go on separate lines before the totals are calculated.
Part 3D: Cost of Goods Sold
Part 3D applies only if your business buys or manufactures inventory. Enter opening inventory, add purchases made during the year, subtract closing inventory, and the result is deducted from gross revenue to arrive at gross profit. Service-based businesses skip this section.
Part 5: Operating Expenses
Part 5 is where the bulk of your deductions live. Common categories include advertising, office supplies, professional fees, insurance, travel, telephone, and utilities. Every amount must be the business portion only. If you use your personal cell phone 60% for business, claim 60% of the cost. The CRA expects records that justify these splits, not estimates.
Meals and Entertainment
Business meals and entertainment carry a built-in limit: you can deduct only 50% of what you spent, and the expense must be reasonable.7Canada Revenue Agency. Line 8523 – Meals and Entertainment This covers client dinners, meals while traveling for business, and food at conventions. Long-haul truck drivers can claim 80% during eligible travel periods, and food provided to customers for compensation or billed directly to a client may be fully deductible. For the typical self-employed filer, halve every restaurant receipt when calculating the deduction.
Vehicle Expenses
If you use a personal vehicle for business, the CRA requires a logbook. A complete logbook records the date, destination, purpose, and kilometres driven for each business trip, plus odometer readings at the start and end of your fiscal period.8Canada Revenue Agency. Motor Vehicle Records Calculate the business-use percentage of total kilometres driven and apply it to your vehicle costs: fuel, insurance, maintenance, lease payments, or depreciation.
After maintaining a full-year logbook once, you can switch to a three-month sample logbook in later years, provided your business-use percentage stays within 10% of the base year. If it drifts beyond that range, a new full-year logbook is required. Keep separate records for each vehicle if you use more than one for business.
Business-Use-of-Home Expenses
The form includes a dedicated chart for the home office deduction. Measure the area you use exclusively or primarily for business, divide it by the total area of your home, and apply that percentage to eligible costs such as rent, utilities, property taxes, home insurance, and mortgage interest. The principal portion of mortgage payments is not deductible.2Canada Revenue Agency. Completing Form T2125
A rule catches many filers here. Home office expenses cannot create or increase a business loss. If your business already shows a loss before these expenses, you cannot deduct them in the current year. The unused amount carries forward to a future year when you have enough net business income to absorb it.9Canada Revenue Agency. Business-Use-of-Home Expenses
Area A: Capital Cost Allowance
Area A handles depreciation of business assets, called Capital Cost Allowance (CCA). Rather than deducting the full purchase price of expensive equipment in the year you buy it, the CRA assigns each type of asset to a class with a specific declining-balance rate. You deduct a percentage of the remaining undepreciated cost each year.
General-purpose computers and systems software, for example, fall under Class 50 with a 55% rate.10Canada Revenue Agency. Classes of Depreciable Property A $2,000 laptop would generate a $1,100 deduction in its first year (assuming no half-year rule adjustments), then 55% of the remaining $900 in the next year, and so on. Vehicles, furniture, and tools each have their own class and rate. The undepreciated capital cost balance carries forward annually, and errors compound over time.
CCA is optional. In a low-income year, you might skip the deduction and preserve the undepreciated balance for a year when you are in a higher tax bracket. Timing works in your favour on this one.
If the Form Produces a Loss
If your expenses legitimately exceed your revenue, Form T2125 produces a net loss. That loss transfers to your T1 return and offsets other income earned in the same year, such as employment income or investment income. If the loss exceeds all your other income for the year, the remaining amount becomes a non-capital loss.
Non-capital losses from business activities can be carried back three years or forward up to twenty years to reduce taxes in those years.11Canada Revenue Agency. Line 25200 – Non-Capital Losses of Other Years To carry a loss back, file Form T1A, Request for Loss Carryback. Carrying losses forward happens automatically when you report them on a return in a future year.
Farm losses follow different rules. If farming is not your main source of income, your deductible farm loss is restricted to a maximum of $17,500 per year, and the unused portion can only be applied against farming income in other years.12Canada Revenue Agency. T4002 Chapter 5 – Losses
Where the Form Goes and When
Form T2125 is not filed on its own. It is submitted as part of your T1 General Income Tax and Benefit Return. The net income or loss calculated on T2125 flows onto the self-employment income lines of the T1.
Self-employed individuals and their spouses or common-law partners have an extended filing deadline of June 15, later than the April 30 date that applies to most individual returns.13Canada Revenue Agency. Filing Due Dates for the 2025 Tax Return Any taxes owing are still due April 30, so waiting until June to file when you owe money means interest accumulating from May 1 onward. File early, or at least estimate and pay your balance by April 30.
For electronic filing, individuals use NETFILE-certified software, while tax professionals submit through the EFILE system.2Canada Revenue Agency. Completing Form T2125 Paper returns can be mailed to the tax centre serving your region, though processing takes significantly longer.
Records to Keep After Filing
Keep all receipts, invoices, bank statements, contracts, and logbooks for at least six years from the end of the tax year they relate to.14Canada Revenue Agency. Keeping Your Records The requirement applies whether you filed electronically or on paper. The CRA can request supporting documents at any point during that window. If you used a vehicle logbook to establish a base year for the simplified method, that logbook must be retained for six years from the last tax year it was used to justify your business-use percentage.8Canada Revenue Agency. Motor Vehicle Records