T2125 Deductions: Business Expenses You Might Be Missing

Form T2125 — Statement of Business or Professional Activities — is where sole proprietors tell the CRA what the business earned and what it cost to run. Most self-employed Canadians claim fewer than half the categories available to them. Here’s what the form covers and where the missed money usually hides.

The one rule that matters

The CRA’s test is simpler than people expect: you can deduct any reasonable expense you incurred to earn business income. An expense doesn’t need to appear on the T2125 by name to qualify — it needs a demonstrable business purpose and documentation. If you can show why it was business and prove you paid it, it generally qualifies.

The categories people underclaim

Advertising and promotion (line 8521). Website hosting, domain registration, social media ads, business cards, Google Ads. Fully deductible, no dollar cap. If you spent money telling people you exist, it goes here.

Office expenses (line 8810). Supplies, plus the software and apps you run the business on. That bookkeeping app subscription counts.

Professional fees (line 8860). Accountant and bookkeeper fees, tax preparation for your income tax and GST/HST returns, legal advice related to the business. The fee you pay someone to get this form right is itself deductible.

Telephone and utilities. The business share of your phone and internet. If you work from home, home utilities go under business-use-of-home instead — don’t double-claim.

Meals and entertainment (line 8523) — at 50%. Client lunches, business dinners, and entertainment with a clear business purpose are deductible at half the amount paid. Keep itemized receipts (not just the card slip) and note who attended and why. Your solo lunch at your desk doesn’t count.

Motor vehicle expenses (line 9281). Fuel, insurance, maintenance, and repairs — but only the business share. If 60% of your kilometres are business, 60% of the running costs are deductible. The CRA expects a logbook backing up the business kilometres, so start one on day one rather than reconstructing it in April. Note: driving from home to a regular fixed workplace is commuting, not business travel.

Business-use-of-home expenses. If your home is your principal place of business — or you use a space only for business and regularly meet clients there — you can deduct a share of rent, utilities, insurance, and maintenance. The CRA suggests a reasonable basis like workspace area divided by total home area. Two limits: these expenses can’t create or increase a business loss (unused amounts carry forward), and claiming capital cost allowance on the home can trigger capital gains issues when you sell. When in doubt, ask your accountant before claiming CCA on your house.

Capital cost allowance (CCA). Equipment like computers, cameras, and tools gets deducted a little each year through CCA classes rather than all at once. Keep the purchase invoices — they start the six-year record clock too.

What never qualifies

• Personal living expenses. Groceries, family dinners, personal clothing, home utilities beyond the business share.
• Fines and penalties. Parking tickets and speeding infractions incurred while driving for work are strictly non-deductible.
• Club memberships whose main purpose is dining, recreation, or sport.
• Commuting. The daily drive to a fixed workplace is personal travel.

The habit that makes April easy

The T2125 is just a summary — the real work is the year’s records. Tag business expenses as you go, keep every receipt scanned, and export a clean category breakdown when it’s time to file. People who do this through the year finish their T2125 in an afternoon. People who don’t spend a week reconstructing one.

How Lemon fits

Lemon’s tags and categories map naturally onto T2125 lines: tag client meals, fuel, supplies, and professional fees through the year, scan every receipt with OCR, and export the breakdown when you file. Come April, the form practically fills itself — and every number has a receipt behind it.

This article is general information, not tax advice. For your specific situation, talk to an accountant.

Download Lemon free on the App Store or Google Play — tag every business expense through the year so your T2125 practically fills itself.