Starting a Side Hustle in Durham Region? Here's What You Need to Know About Taxes

Published on April 2, 2026

Side hustles are booming across Durham Region. Whether you're driving for a rideshare app in Oshawa, doing freelance design in Whitby, selling crafts online from Ajax, or offering tutoring sessions in Pickering, that extra income comes with tax obligations that many people overlook — until it's too late.

The CRA doesn't distinguish between "real" business income and side hustle earnings. If you're making money outside of a traditional employer-employee relationship, you're self-employed for that income, and the rules apply from the very first dollar. Here's what Durham Region side hustlers need to know.

All Side Hustle Income Is Taxable

This is the most important rule, and the one most often ignored: every dollar you earn from your side hustle must be reported on your tax return. It doesn't matter if it's cash, e-transfer, or crypto. It doesn't matter if you didn't receive a T4 or any other tax slip. The CRA expects you to track and report it yourself.

Side hustle income is reported on your T1 personal tax return, typically on Form T2125 (Statement of Business or Professional Activities). You'll report your gross revenue, subtract eligible expenses, and the net amount gets added to your other income for the year. That total determines your tax bracket.

A common misconception is that you don't need to report income under a certain threshold. There is no such threshold. Whether you earned $500 or $50,000, it all goes on your return.

The Good News: You Can Deduct Expenses

The flip side of reporting all your income is that you can also deduct reasonable business expenses incurred to earn that income. This is where many side hustlers leave money on the table because they don't track their spending.

Common deductible expenses for side hustles include:

  • Supplies and materials — craft supplies, software subscriptions, tools of the trade
  • Home office expenses — a portion of rent or mortgage interest, utilities, and internet, based on the percentage of your home used for business
  • Vehicle expenses — if you use your car for business (rideshare, deliveries, client visits), you can claim a portion of gas, insurance, maintenance, and depreciation based on business-use kilometres
  • Advertising and marketing — website hosting, business cards, social media ads
  • Professional fees — accountant fees, legal fees, and even the cost of tax software if you use it for your business return
  • Phone and internet — the business-use portion of your cell phone and home internet

The key is documentation. Keep receipts, maintain a simple spreadsheet, and separate your business and personal spending. If the CRA ever asks, "show me the receipts" is not a metaphor — they mean it literally.

CPP: The Tax Bill Nobody Expects

Here's where side hustlers get surprised. When you're employed, your employer pays half of your Canada Pension Plan (CPP) contributions and deducts your half from your paycheque. When you're self-employed — even as a side hustler — you pay both halves.

For 2026, that means a CPP rate of 11.9% on net self-employment income between approximately $3,500 and $71,300 (plus CPP2 on earnings above that threshold). On $30,000 of net side hustle income, that's roughly $3,150 in CPP alone, on top of your regular income tax.

This catches many first-time filers off guard. If you had a profitable side hustle in 2025 and haven't set aside money for CPP, talk to a tax professional now — before the April 30 filing deadline.

When Do You Need to Register for HST?

If your side hustle revenue exceeds $30,000 in any four consecutive calendar quarters, you're required to register for an HST number and start charging, collecting, and remitting HST (13% in Ontario) on your sales.

Below that threshold, registration is optional. But here's a nuance many people miss: voluntary registration can sometimes save you money. If you have significant business expenses that include HST (equipment purchases, software, supplies), registering allows you to claim Input Tax Credits (ITCs) to recover the HST you paid. For capital-intensive side hustles, the math can work in your favour even before you hit the $30,000 mark.

On the other hand, if your clients are individual consumers (not businesses), adding 13% to your prices could make you less competitive. It's a case-by-case decision.

Keeping It Simple: Bookkeeping for Side Hustlers

You don't need enterprise accounting software to manage a side hustle, but you do need a system. At minimum:

  1. Open a separate bank account — even a free chequing account. Run all business income and expenses through it. This makes tracking effortless and protects you if the CRA audits.
  2. Track income and expenses monthly — a simple spreadsheet works. Record the date, amount, description, and category for every transaction.
  3. Save receipts — digitally is fine. Snap a photo and file it by month. The CRA requires you to keep records for six years.
  4. Set aside 25-30% of net income for taxes — this covers income tax and CPP. Put it in a separate savings account so it's there when you need it.

Fifteen minutes a week is usually enough to keep your books clean. The alternative — scrambling to reconstruct a year's worth of transactions in April — is far more painful and far more expensive if you need professional help to sort it out.

The Self-Employed Filing Deadline Advantage

One small perk of being self-employed: your tax filing deadline is June 15, not April 30. However — and this is important — any taxes owed are still due by April 30. The extended deadline only applies to filing the return itself, not to payment. If you owe and pay after April 30, interest starts accumulating immediately.

For most people with a side hustle and a regular job, we recommend filing by April 30 anyway to avoid the confusion and to get any refund sooner.

When to Get Professional Help

If your side hustle is earning more than a few thousand dollars a year, the cost of professional tax preparation almost always pays for itself in deductions you'd otherwise miss and penalties you'd otherwise risk. A tax professional can also help you decide whether to incorporate, whether to register for HST, and how to structure your affairs to minimize your overall tax burden.

At Azim Tax & Accounting, we work with side hustlers, freelancers, and gig workers across Durham Region — from Oshawa to Clarington. Whether you're filing your first T2125 or thinking about turning your side project into a full-time business, we can help you get it right from the start.

Book a Free Consultation About Your Side Hustle Taxes