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Resources · Self-employment income

Self-employment income, deducted line by line.

Freelance, consult, run a trade or sell online? Your business income is taxable — but only on your net profit, after legitimate expenses. The trick is knowing which expenses count, and on which line they belong. Here’s a plain-language tour of every expense line on Form T2125, the CRA’s Statement of Business or Professional Activities, with real examples for each — plus the rules that trip up most sole proprietors.

Where to start: open the line-by-line explorer below and click any expense line to see what it covers and a few worked examples. Then read the two rules that matter most: the 50% meals rule & current vs. capital and the home-office deduction. Good books make all of this painless — here’s how the bookkeeping process works.

The basics

You’re taxed on net profit, not revenue

Report your self-employment on Form T2125. Add up what you billed, subtract your deductible expenses, and the net figure is what gets taxed — at your full marginal rate, and it’s also what you pay CPP on. Net income flows to line 13500 (business) or line 13700 (professional) of your personal (T1) return.

Business or professional? Most people file the business side — trades, retail, e-commerce, contractors. Professional income is for fields like accounting, law, medicine and engineering, and mainly differs in how unbilled work-in-progress is handled. Either way the expense lines below are identical. And a natural question once the profit grows: would incorporating leave you better off? — our sole-proprietor-vs-incorporation calculator gives you a first read.

Interactive

The T2125 expense lines, one at a time

Every deductible expense on the form has its own line number. Click a line to see what CRA lets you put there, and up to three everyday examples.

👈 Pick an expense line. Amounts in examples are illustrative.

Rule #1 · two you can’t skip

The 50% meals rule & current vs. capital

Two rules quietly decide how much of a receipt you actually get. First, most business meals and entertainment are only 50% deductible — the dinner was $120, the deduction is $60. Second, the big one: is a purchase a current expense (off this year’s income) or a capital expense (written down slowly through CCA)? Same receipt, very different result.

The test CRA appliesCurrent expense (deduct now)Capital expense (write down over time)
Lasting benefit?
Does it give an enduring advantage?
Repainting your shop’s interior Building an addition onto the shop
Maintain or improve?
Restore to working order, or make better?
Servicing or repairing an existing machine Buying a newer, faster machine
Consumed, or lasting kit?
Used up soon, or an asset you keep?
Printer paper, stamps, supplies A laptop, desk or power tool
Value vs. the business?
A tie-breaker when the above are unclear.
A modest, ordinary running cost A large outlay that betters the business
Fix / restore / consume → current Buy a lasting asset → capital (CCA) Meals & entertainment → usually 50%

Capital purchases aren’t lost — they’re deducted gradually as capital cost allowance. The mistake is writing a $2,500 laptop or a new machine off all at once. When it’s a close call — and it often is — let’s look at the receipt together.

Rule #2 · the home-office deduction

Working from home? Claim your workspace.

If you run the business from home, you can deduct the business share of your home costs on line 9945 — heat, electricity, insurance, maintenance, and a portion of your mortgage interest or rent and property tax. You qualify if the space is your principal place of business, or you use it only for the business and regularly meet clients there.

A worked split

Measure the workspace against the whole home. A 200 sq ft office in a 2,000 sq ft home is 10% — so 10% of those shared home costs are deductible. If the room does double duty (a dining table you also work at), prorate again for the hours it’s used for business.

Workspace share
200 / 2,000 = 10%

The slice of shared home costs (heat, hydro, insurance, mortgage interest, property tax) you can claim.

The ceiling
Can’t create a loss

Home-office costs can only bring net income down to zero — not below. Any unused amount carries forward to a future year.

One caution. You can include a share of mortgage interest, but claiming CCA on your home is usually a bad idea — it can put part of your principal-residence exemption at risk and trigger recapture when you sell. Most people deliberately leave the home itself out of CCA.

A quick word on

Capital cost allowance (CCA)

When you buy something with lasting value — a laptop, tools, equipment, a work vehicle, furniture — you don’t deduct it all at once. Instead you claim CCA on line 9936, writing the cost down a little each year based on the asset’s class. It’s optional, and it comes with strings:

  • CCA is generally optional and flexible. You can claim some, all, or none in a year — useful for smoothing income, but easy to leave value on the table if ignored.
  • It can come back on sale. Sell an asset for more than its depreciated value and the CCA you claimed is “recaptured” into income that year.
  • Different assets, different rates. A computer, a vehicle and a building each sit in their own class with its own rate — and vehicles carry extra cost limits.

CCA is a genuine planning tool in the right hands. Because the class rules, vehicle limits and recapture are easy to get wrong, it’s worth setting up with your CPA — ideally alongside a clean bookkeeping process so the asset records are right from day one.

Before you file

Three classic self-employment mistakes

“Paying yourself” a salary

As a sole proprietor you can’t deduct a wage or draw to yourself — your pay is the net profit. (This is one thing that changes if you incorporate.)

Deducting 100% of meals

Most business meals and entertainment are capped at 50%. Claiming the full amount on line 8523 is one of the most common reassessments.

Expensing a big asset

A laptop, a machine or a work vehicle is capital — deducted through CCA, not written off all at once. See Rule #1.

From receipts to a return

Want your self-employment done right — and optimized?

Self-employment is where clean books and a few good judgment calls — current vs. capital, the home-office split, whether it’s time to incorporate — genuinely change your tax bill. That’s exactly what we sort out with clients, starting from a bookkeeping process you can trust.

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A conversation starter, not advice. This is a plain-language summary of Form T2125 based on current CRA guidance, written for general education. Line numbers, eligibility, the 50% meals limit and the current-vs-capital call all depend on your specific facts, and the rules change. Use it to frame your questions, then let’s look at your actual numbers before you file. See the CRA’s Guide T4002 for the source rules.