Self-Employed Taxes in Ontario: What to Track (and What CRA Actually Cares About)
If you’re self-employed in Hamilton (or anywhere in Ontario), tax time usually comes down to three things:
- reporting your business income properly,
- claiming expenses you’re entitled to, and
- keeping records that support it all.
This guide walks through the essentials in plain English, based on CRA guidance, so you can file confidently and avoid avoidable CRA follow-ups.
Quick note: This article is general information, not personal tax advice. CRA rules can apply differently depending on your situation.
1) How self-employed income is reported (T2125)
Most self-employed individuals report business or professional income on Form T2125 (Statement of Business or Professional Activities) as part of their personal tax return.
CRA’s detailed guidance for self-employed income and expenses is in Guide T4002.
What we typically help clients organize for the T2125
- Total sales / revenue (by month is ideal)
- Business expenses (categorized)
- HST/GST collected and paid (if registered)
- Asset purchases (equipment, computers, vehicles) — these may be treated differently than regular expenses (often capital vs current)
2) What expenses can you deduct?
CRA’s core idea is simple: expenses must be incurred to earn business income, and you need records to support them. Guide T4002 walks through common expense categories and how they’re reported.
Common expense categories that matter (especially for IT consultants, real estate operators, and hospitality)
- Advertising/marketing
- Office supplies and software
- Professional fees (accounting/legal)
- Business insurance
- Vehicle and travel (with proper tracking)
- Meals and entertainment (rules can be specific—document carefully)
- Home office (business-use-of-home) where applicable
Home office expenses: what CRA says
If you use part of your home for business, CRA allows deducting a portion of eligible costs based on a reasonable basis, such as workspace area divided by total home area. CRA lists examples like utilities, maintenance, insurance, and (in many cases) portions of property taxes and mortgage interest.
Tip: Keep your calculation method consistent year-to-year and keep backup (floor plan sketch, measurements, photos, etc.).
3) Recordkeeping: the easiest way to reduce CRA stress
CRA generally requires you to keep records and supporting documents for six years from the end of the last tax year they relate to (with some special rules in certain situations).
That’s why we encourage clients to set up a simple system:
- separate business bank/credit card (even if not incorporated),
- cloud folder by year,
- monthly bookkeeping cadence (even if minimal),
- store receipts/invoices in a consistent format.
4) Instalment payments: the surprise many self-employed people don’t expect
If you’re self-employed, you may have to make instalment payments. CRA lists the common instalment due dates as March 15, June 15, September 15, and December 15 (with a special date for farming/fishing income).
If payments are late or insufficient, CRA may charge instalment interest/penalties depending on circumstances.
5) Do you need to register for HST/GST as a self-employed person?
Many self-employed professionals hit the “small supplier” rule. CRA explains that if you exceed the $30,000 threshold, you’re no longer a small supplier and generally have to register and start charging GST/HST based on the timing rules CRA outlines.
FAQ: Self-Employed Taxes (CRA-focused)
1) How do I report self-employed income in Canada?
CRA allows reporting business/professional income and expenses using Form T2125 and refers filers to Guide T4002 for detailed rules.
2) How long do I need to keep receipts and records?
CRA generally requires keeping records for six years from the end of the last tax year they relate to.
3) When are instalments due?
CRA lists instalment due dates (most individuals) as March 15, June 15, September 15, December 15.
If you’re self-employed in Hamilton or anywhere in Ontario and want your taxes done properly (and proactively), we can help with:
- T1 + T2125 filing
- instalment planning
- HST/GST setup and filings
- bookkeeping that supports CRA-ready tax returns
Book a free consultation with Fern Taxes CPA Professional Corporation (virtual or in-person)
