If you're saving for a child's post-secondary education, your country decides the tool. Canadians use RESPs. Americans use 529 plans. Both offer tax-free growth. The similarities end there.
Understanding the differences matters most for cross-border families (one country of residence now, possible move later), for grandparents funding accounts, and for anyone who wants to use the unused balance if the child doesn't attend a qualifying program.
Side-by-side at a glance
Contribution limits
- RESP: no annual limit, lifetime limit of $50,000 per beneficiary (lifetime contribution, not growth).
- 529: no federal annual limit (though $18,000/year is the gift-tax threshold per donor per beneficiary). Lifetime limits set by each state, typically $300,000 – $550,000 per beneficiary.
Government matching / grants
- RESP: the Canada Education Savings Grant (CESG)matches 20% on the first $2,500 of annual contributions — up to $500/year, $7,200 lifetime per beneficiary. Low-income families get additional CESG + Canada Learning Bond. Some provinces add their own grants (e.g., BC Training & Education Savings Grant).
- 529: no federal matching. Some states offer tax deductions or credits for in-state 529 contributions — varies widely. No 529 equivalent of the Canadian CESG.
This is the single biggest difference. The RESP is substantially more valuable dollar-for-dollar because of the CESG — a guaranteed 20% return before any market growth. The 529 relies entirely on tax-free growth for its advantage.
Tax treatment
- RESP: contributions are not tax-deductible. Growth is tax-deferred. Withdrawals — called Educational Assistance Payments (EAPs)— are taxed in the hands of the student beneficiary, who is usually in a near-zero bracket during school years.
- 529: contributions are not federally deductible (some states offer a deduction for contributions to their ownstate's plan). Growth is tax-free. Withdrawals for qualified education expenses are also tax-free.
Qualified uses
- RESP: post-secondary education at qualifying programs in Canada or abroad. Includes trade schools, apprenticeships, colleges, universities. Most programs with accreditation count.
- 529: broader — qualified K-12 tuition (up to $10,000/year), college/university, apprenticeships, and since 2024, can roll up to $35,000 of unused 529 balance into a Roth IRA owned by the beneficiary (subject to Roth annual limits and 15-year account rules).
What happens with unused money
This is where plans meaningfully diverge.
- RESP (child doesn't pursue post-secondary):
- Contributions come back tax-free (your money).
- CESG grants must be returned to the government.
- Growth can be moved to the subscriber's (parent's) RRSP if they have room — up to $50,000 of "Accumulated Income Payment" rollover — or withdrawn directly, in which case it's taxed at the subscriber's marginal rate plus a 20% penalty.
- 529 (beneficiary doesn't attend qualifying program):
- Change the beneficiary to another qualifying family member (sibling, cousin, yourself).
- Keep the account open indefinitely — it can eventually fund a grandchild.
- Roll up to $35,000 to a Roth IRA owned by the beneficiary (new since 2024; with conditions).
- Withdraw as non-qualified: earnings portion is taxed as ordinary income plus a 10% penalty. Contributions come back tax-free.
Strategy: RESP
- Contribute $2,500/year to capture the full CESG.This is the highest priority dollar. Missing a year's CESG is permanent — carry-forward is limited to one year's worth.
- Don't exceed $2,500/year in early yearsunless catching up — front-loading beyond CESG eligibility doesn't boost grants.
- Family plans (one account, multiple beneficiary kids) offer flexibility — unused amounts can be shifted between children within limits.
- Withdraw EAPs strategically during school years when the student has low/no other income — maximises tax advantage.
Strategy: 529
- Contribute to your state's plan if it offers a tax deduction — the state benefit usually outweighs out-of-state plan differences. Otherwise, choose the best-reviewed plan (Utah, New York, Illinois are commonly praised for low fees).
- Consider "superfunding": US gift tax rules allow front- loading up to 5 years of gift-tax exemption ($90,000/donor in 2024) in a single contribution per beneficiary. Maximises tax-free compounding.
- Choose age-based allocationsif you don't want to actively manage the glide-path — they de-risk automatically as the beneficiary approaches college age.
- Plan for the Roth IRA rollover optionif there's any chance of unused balance — worth at least $35,000 if circumstances allow.
Cross-border families
If your family might move between Canada and the US, coordination is critical:
- Moving to the US with an RESP:the RESP isn't recognised as tax-sheltered by the IRS. You may face annual taxable-income events on the growth, and CESG grants have specific residency rules. Consult a cross-border specialist before the move.
- Moving to Canada with a 529:similar issues — the CRA doesn't automatically exempt 529 growth from Canadian tax. Some tax-treaty provisions may help, but the interaction is complex.
For families with cross-border plans: talk to an advisor before contributing large amounts. Getting this wrong can turn a tax-advantaged account into an annual compliance burden in the new country.
The bottom line
For Canadian families with post-secondary-bound kids: the RESP is mandatory up to the $2,500/year CESG threshold. The 20% match is free money.
For American families: the 529 is the clear default for organised education savings. Choose your state plan based on the tax-deduction comparison and long-run fees.
For cross-border families: treat this as a specialist conversation, not a generic financial product decision. The compliance implications alone can dwarf the contribution amounts.