The 11.9% CPP surprise
When you were an employee, CPP came off your cheque and your boss quietly matched it. Self-employed, you are both — so you pay both halves. This is the single biggest shock in a contractor's first solo tax bill.
Why the first year hurts
Employees never really see CPP. A bit comes off each cheque, the employer matches it behind the scenes, and it's invisible. The day you go out on your own, that whole thing lands on you at once — both halves, 11.9% in 2026 — and it shows up as one big line in your balance owing.
At the 2026 maximum, that's about $8,461 in base CPP alone, before a single dollar of income tax — plus up to $832 more in CPP2 once your earnings pass $74,600. For a lot of first-year contractors, the CPP is bigger than they expected the entire bill to be.
The part that softens it
You do get relief: a deduction for the employer half and a credit for the employee half. It lowers your income tax — but it does not reduce the cash you have to hand the CRA. The full contribution is still due. Relief on the tax side, not the cash side.
How to not get caught
This is the real reason the "set aside 25–30%" rule is as high as it is — pure income tax would be lower; CPP is what pushes the number up. The good news: the calculator already builds the full self-employed CPP into your total and your monthly set-aside, so if you follow that figure, the CPP is already covered. Nobody who plans for it gets surprised by it.
Common questions
How much CPP does a self-employed person pay in 2026?
Self-employed contributors pay 11.9% of pensionable earnings (both the employee and employer halves) up to the year's maximum pensionable earnings of $74,600, after a $3,500 basic exemption. That's a maximum base contribution of about $8,460.90 for 2026. On top of that, CPP2 applies at 8% on earnings between $74,600 and $85,000, up to about $832 more.
Why do I pay double the CPP I used to?
As an employee you paid one half (about 5.95%) and your employer paid the matching half. Self-employed, there is no employer — you are it — so you pay both halves. Your total percentage doesn't change versus what was really being paid on your behalf; it's just that all of it now visibly comes out of your pocket.
Is any of the CPP deductible?
Yes. You get an income tax deduction for the 'employer' half of your CPP, and a tax credit for the 'employee' half. It softens the blow, but it doesn't remove the cash requirement — you still have to pay the full amount to the CRA, usually as part of your balance owing or through instalments.
How do I avoid getting blindsided by it?
Budget for it from day one. When people say 'set aside 25–30% for taxes,' the CPP is a big part of why that number is that high — income tax alone would be lower. This calculator includes the full self-employed CPP in the total, so the monthly set-aside figure it gives you already accounts for it.