Ask a Planner Incorporating can eliminate the need to pay CPP contributions if you are self-employed but there are trade-offs that should be considered. Image from Magnific An unincorporated sole proprietor must contribute to the Canada Pension Plan (CPP) when they file their personal tax return. These contributions can be up to $9,292.90 for 2026. Some taxpayers may not even notice this, but line 42100 on a T1 tax return is CPP Contributions Payable on Self-Employment Income and Other Earnings.