An RESP is easier to understand when its balance is separated into three kinds of money: subscriber contributions, government incentives, and investment earnings. These amounts can grow together inside one plan, but they do not have the same source, payment route, or tax recipient.

The subscriber opens the plan and generally controls contributions and payment requests. The beneficiary is the person for whom education assistance is intended. The promoter administers the RESP, applies the plan and program rules, and makes the payments.

Contribution limits and grant limits are not the same thing. Under current rules, there is no annual RESP contribution limit for 2007 and later years, but the lifetime contribution limit is $50,000 per beneficiary across all RESPs. The familiar $2,500 figure is not an annual contribution ceiling. It is the ordinary annual contribution that can attract $500 of basic CESG at the 20% rate.

CESG is generally tied to eligible contributions. Additional CESG depends on family income. The Canada Learning Bond can be paid for an eligible lower-income beneficiary without a personal contribution. Quebec and British Columbia also have separate provincial education-savings incentives, with their own eligibility and provider requirements.

RESP withdrawals should be identified by payment type, not treated as one generic withdrawal. A refund of contributions is generally not taxable, although it can still trigger repayment of grants or provincial incentives. An educational assistance payment, or EAP, contains government incentives and investment earnings and is taxable to the beneficiary. An accumulated income payment, or AIP, is generally earnings paid to a subscriber or other eligible recipient and can be subject to regular income tax plus an additional RESP tax.

If the beneficiary does not pursue eligible post-secondary education, the RESP balance is not simply forfeited. Contributions, government incentives, and earnings follow different exit rules. The available options may include keeping the plan open, changing the beneficiary, transferring to another RESP, returning contributions, repaying unused incentives, making an AIP when the conditions are met, or using another permitted transfer route.