RESP Guide
Grandparents and RESPs: the generous gift that needs one phone call first
A grandparent-funded RESP is one of the most efficient gifts in Canadian tax law. It is also the single most common source of over-contribution penalties we see.
Short answer
Can a grandparent open and fund an RESP for a grandchild?
Yes. A grandparent can be the subscriber of an individual RESP, or of a family plan since grandchildren are related by blood. The important constraint is that the $50,000 lifetime contribution limit and the $7,200 CESG maximum are per child, not per plan. If the parents already contribute, coordinate first — over-contributions attract a 1% per month penalty until removed. Naming a successor subscriber protects the plan if the grandparent dies.
Reviewed by Johnathan Pollock · Updated 2026-01-15
Make one call before you open anything
Ask the parents two questions: does a plan already exist, and how much has been contributed to date? That is the entire due-diligence process, and it prevents both problems at once — duplicated grant claims and breached lifetime limits.
If a plan exists and is reasonably invested, the cleanest gift is simply contributing into it, or gifting the parents the cash to contribute. You forgo control; you gain simplicity, one fee schedule and zero limit risk.
When opening your own plan is the right call
Grandparents open their own RESP for legitimate reasons: the parents have not started, the family situation is complicated, or the grandparent wants the money to be unambiguously earmarked and controlled.
If you go this route, get the grandchild's SIN from the parents, open a family plan when there are several grandchildren so the balance can move between them, and tell the parents your annual contribution amount so the combined total stays at $2,500 per child for grant purposes and inside $50,000 for life.
- Family plan beneficiaries must be related to you by blood or adoption — grandchildren qualify, a friend's child does not.
- Only $2,500 per child per year earns basic CESG regardless of how many plans contribute.
- Contribution room and grant room follow the child, permanently.
The estate detail almost every plan misses
If a grandparent-subscriber dies without naming a successor subscriber, the RESP becomes an estate asset. It may be collapsed, contributions returned to the estate, grant repaid and growth taxed as an AIP — the exact outcome the gift was meant to avoid.
The fix is small: name a successor subscriber (commonly the child's parent) in your will, and confirm the provider's documentation supports it. In Ontario this also keeps the plan out of the probate-fee calculation where the account is structured to pass directly.
Grandparent gifting versus other structures
An RESP contribution beats an informal in-trust account for education money in almost every case: the 20% CESG is an immediate guaranteed return, growth is deferred, and the eventual payout is taxed in a low-income student's hands rather than attributed back.
For amounts well beyond the $50,000 RESP limit, the conversation changes — a formal trust or a participating whole life policy with the grandchild as life insured can carry the surplus. We compare the education-funding case for whole life on our RESP vs whole life page.
See what your gift becomes at 18
Enter the grandchild's age and the amount you plan to give each year. The calculator shows the grant captured and the projected balance when they start school.
Model a grandparent contributionFrequently asked questions
- Can grandparents open an RESP in Canada?
- Yes. A grandparent can be the subscriber of an individual RESP for a grandchild, and only needs the child's SIN and the parents' cooperation to obtain it. A family plan, however, requires every beneficiary to be related by blood or adoption to the subscriber — which grandchildren are.
- Is it better for grandparents to open their own RESP or contribute to the parents' plan?
- Contributing to the parents' existing plan is usually simpler: one $50,000 lifetime limit per child applies regardless of how many plans exist, and a single plan avoids duplicate fees and over-contribution penalties. Grandparents open their own plan mainly when they want control over the account.
- What is the RESP over-contribution penalty?
- 1% per month on the excess over the $50,000 lifetime limit per beneficiary, charged until the excess is withdrawn. Because the limit is per child rather than per plan, two well-meaning plans are the most common cause.
- What happens to a grandparent's RESP if they pass away?
- The plan is an asset of the estate unless a successor subscriber is named. Ontario grandparents should name a successor subscriber in the will (or in the plan documentation where allowed) so the plan continues rather than being collapsed and taxed.
Sources
Written and reviewed by Johnathan Pollock
Managing Partner, Thompson & Pollock Wealth Inc. — Amazon best-selling author of The Entrepreneur's Toolkit.
Last reviewed 2026-01-15
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