CPP/QPP for Self-Employed, Explained

You pay both shares

As an employee, CPP (or QPP in Quebec) contributions are split evenly between you and your employer. Self-employed, there's no employer to split with — you pay the full combined rate yourself, on your net self-employment income.

The rates

For 2026, the combined self-employed rates are:

• CPP (outside Quebec): 9.9% base + 2% enhanced = 11.9% combined, on pensionable earnings up to the Year's Maximum Pensionable Earnings (YMPE) of $74,600, above a $3,500 basic exemption.
• QPP (Quebec): 10.6% base + 2% enhanced = 12.6% combined, on the same $74,600 YMPE and $3,500 exemption.

Both plans also have a second tier — CPP2/QPP2 — an additional 8% on earnings between the $74,600 YMPE and an $85,000 second ceiling. This only applies once your net self-employment income exceeds $74,600.

Deduction and credit, not just an expense

Only the base-rate portion (9.9% for CPP, 10.6% for QPP) is split for tax purposes: half counts as a business-expense deduction (reducing your taxable income), and half counts as a non-refundable tax credit (reducing your federal and provincial tax owing directly, each at its own lowest-bracket rate). The enhanced-rate portion (2%) and the entire second-tier amount (CPP2/QPP2) are fully deductible, with no credit component.

This split matters because a deduction and a credit reduce your tax bill differently — a $100 deduction saves you your marginal rate times $100, while a $100 credit saves a fixed amount at the lowest federal and provincial bracket rates combined, regardless of your actual bracket.

A worked example

Say your net self-employment income is $80,000 outside Quebec. Roughly:

1. Contributory earnings for the base/enhanced tiers are capped at the $74,600 YMPE, minus the $3,500 exemption — so $71,100 is contributory at the base + enhanced combined rate of 11.9%.
2. The remaining $5,400 (from $74,600 up to your $80,000 income) falls into the CPP2 second tier, taxed at 8%.
3. Half the base-rate amount (9.9% of the $71,100) becomes a tax deduction; the other half becomes a non-refundable credit. The enhanced 2% and the entire CPP2 amount are fully deductible.

Add the base, enhanced, and second-tier amounts together for your total CPP contribution — the calculator below runs this exact math for any income level.

Working out the base/enhanced/second-tier split and its deduction/credit treatment by hand, on top of your income tax, is exactly the kind of multi-step calculation a tool automates in one pass.

What contributing actually buys you

CPP/QPP isn't just a tax — it's a contribution toward your own future retirement pension (and, if it happens, disability and survivor benefits). The more you contribute over your working life, up to the plan's limits, the larger your eventual pension. This is one reason some self-employed people choose to keep their net income (and contributions) steady year to year rather than aggressively minimizing it purely to reduce this year's tax bill.

Stopping contributions between 65 and 70

Once you're between 65 and 70 and already receiving a CPP or QPP retirement pension, you can elect to stop contributing on your self-employment earnings using Form CPT30 (or the equivalent QPP process in Quebec). Contributions stop automatically at 70 regardless. Below 65, or before you're collecting your pension, contributions continue as normal — there's no general age-based exemption before then.

Common mistakes to avoid

• Forgetting CPP/QPP in your tax savings target. It's easy to budget for income tax alone and forget you owe the full combined rate, not just an employee's half.
• Applying the deduction/credit split incorrectly by hand — treating the whole contribution as a deduction (or the whole thing as a credit) overstates or understates your actual tax savings.
• Missing the second tier once income passes $74,600. It's easy to forget CPP2/QPP2 exists if you've only ever calculated the base and enhanced amounts before.
• Assuming you can stop contributing simply by turning 65. The CPT30 election requires you to already be collecting your CPP/QPP pension, not just reaching age 65.

Frequently asked questions

Does QPP work exactly the same as CPP for self-employed people? The mechanics (base/enhanced split, second tier, YMPE, deduction/credit treatment) are parallel, but the rates differ — QPP's base rate is 10.6% versus CPP's 9.9%, and QPP is administered by Retraite Québec rather than the CRA.

Do I have to contribute if my net self-employment income is very low? No — contributions only apply above the $3,500 basic exemption, and if your net self-employment income (combined with any employment income) doesn't exceed that exemption, there's no CPP/QPP contribution owing.

Can I contribute more than the required amount voluntarily? No — CPP/QPP contributions follow the fixed rates and ceilings above; there's no voluntary top-up mechanism the way there is with an RRSP.

Official source: Government of Canada – Contributions to the Canada Pension Plan