How side hustle tax works in Canada
When you earn money on the side — driving for Uber, freelancing, selling on Etsy, consulting — the Canada Revenue Agency treats it as self-employment income. The tax surprise that catches most people isn’t that side income is taxed. It’s HOW it’s taxed.
Your side income stacks on top of your day-job income. It doesn’t get its own fresh set of low tax brackets. Because your salary has already “used up” your lower brackets, every dollar of side income is taxed at your highest marginal rate. Someone earning $60,000 at their job is in a bracket where each extra dollar of side income is taxed at roughly 30% combined federal and provincial — far more than the “average” rate they pay on their salary. That gap between your average rate and your marginal rate is exactly why a $10,000 side hustle can create a tax bill far bigger than people expect.
The CPP surprise nobody warns you about
On top of income tax, self-employed Canadians pay CPP on their net side income — and they pay BOTH halves. As an employee, you pay about 5.95% and your employer quietly pays the other 5.95%. When you’re self-employed, you are both, so you owe the full 11.9% yourself. On $13,000 of net side income that’s over $1,500 in CPP alone, separate from income tax. This is the line item that turns an expected tax bill into a shock.
You’re taxed on profit, not revenue
The good news: you only pay tax on your NET side income — what’s left after legitimate business expenses. If you made $15,000 driving but spent $2,000 on gas, insurance, and phone costs tied to the work, you’re taxed on $13,000, not $15,000. Tracking expenses honestly is the single biggest lever you control. Common deductions include vehicle costs for business kilometres, a portion of your phone and internet, supplies, software, and home-office space if you work from home.
The $30,000 GST/HST threshold
Once your gross self-employed revenue passes $30,000 over four consecutive quarters, you generally must register for and charge GST/HST. Below that, registration is optional. One major exception: ride-share drivers (Uber, Lyft) must register for GST/HST from their very first fare — there is no $30,000 grace threshold for ride-share.
When the tax is actually due
Tax on side income isn’t withheld automatically like it is on your paycheque, so you pay it at filing time — or, once your tax owing gets large enough, through quarterly instalments the CRA requires in advance. The practical takeaway: set the money aside as you earn it. A good rule of thumb is to park 25–30% of your net side income in a separate savings account so the bill is already covered when it arrives.
Frequently asked questions
How much tax should I set aside on side income?
A safe rule of thumb is 25–30% of your net side income (after expenses), but your real number depends on your day-job salary and province — the higher your salary, the higher the rate, because your side income stacks on top. Use the calculator above for a figure based on your actual situation.
Do I have to report small amounts of side income?
Yes. There is no minimum threshold for reporting self-employment income to the CRA — even a few hundred dollars is technically taxable and must be declared. The $30,000 figure people remember is the GST/HST registration threshold, not an income-reporting threshold.
Do Uber and ride-share drivers pay tax differently?
The income tax works the same way, but ride-share drivers must register for and charge GST/HST from their first dollar — they don’t get the usual $30,000 threshold. Delivery-only work (food couriers) generally does follow the normal $30,000 threshold; ride-share is the special case.
What can I write off against side income?
Any reasonable expense incurred to earn the income: business-use vehicle costs, a portion of phone and internet, supplies, software and subscriptions, fees, and a home-office portion if you work from home. You can only deduct the business-use share, and you should keep receipts.
When do I pay tax on my side hustle?
You report it on your annual tax return (the T2125 form) and pay any balance by the deadline. If your tax owing exceeds the CRA’s threshold two years running, you’ll be asked to pay in quarterly instalments going forward rather than in one lump sum.
Does this affect my CPP and benefits?
Yes — paying self-employed CPP increases your future CPP retirement benefit. It’s a real cost now but not purely lost money; it builds your contribution record the same way payroll deductions do for employees.