The 20% the government adds: how the RESP grant actually works

Before the fund choices, before the tax mechanics, before any comparison to other accounts, one rule settles most of the RESP question. The first $2,500 contributed each year, per child, earns an automatic 20% from the federal government. Contribute $2,500 and $500 appears alongside it, deposited by Employment and Social Development Canada a few weeks later. No market offers a guaranteed 20% on the day the money arrives. This one does, every year, until the grant's lifetime cap is reached.

That rule is called the Canada Education Savings Grant, the CESG, and it is the reason the Registered Education Savings Plan exists as more than a tax shelter. Everything else about the account is worth knowing. Nothing else about it matters as much.

How the account itself works

An RESP is a savings plan registered to a child, the beneficiary, and opened by a subscriber, usually a parent or grandparent. Contributions are not tax deductible. What the account offers instead is deferral and a transfer: investments grow untaxed inside the plan, and when the money comes out for post-secondary education, the growth and the grants are taxed in the student's hands. A student with tuition credits and little income typically pays little or no tax on those withdrawals. The original contributions come back to the subscriber tax free at any time, because they were made with after-tax money in the first place.

There is no annual contribution limit. There is a lifetime limit of $50,000 per child, and it applies to contributions across every RESP opened for that child combined. A grandparent's separate plan draws from the same $50,000, which is why families with more than one subscriber compare notes. Contributions above the limit attract a penalty of 1% per month until withdrawn.

The grant math, and the catch-up rule

The basic CESG pays 20% on the first $2,500 of contributions each calendar year, to a maximum of $500 per year and $7,200 over the child's lifetime. Contributions beyond $2,500 in a year still grow tax deferred, but they attract no grant. The grant is paid on contributions, not on growth, which means the only way to collect it is to put money in, year after year.

Miss a year and the room does not vanish. Unused grant room carries forward, and a contribution of up to $5,000 in a single year can capture up to $1,000 of CESG: the current year's $500 plus one prior year's. The catch-up runs one year at a time, so a family starting late cannot collect the entire backlog at once. Starting when a child is 10 still leaves time to collect the full $7,200, but only if contributions run at $5,000 a year rather than $2,500.

Two additions sit on top of the basic grant for families with lower incomes. The Additional CESG pays an extra 10% or 20% on the first $500 contributed each year, depending on adjusted family net income. And the Canada Learning Bond deposits up to $2,000 into an eligible child's RESP with no contribution required at all; opening the account is the only step. The income thresholds for both are indexed and published annually.

No market pays a guaranteed 20% the day the money arrives. This one does.

From birth to first tuition bill

Take a child born this year, with parents who contribute $2,500 every year starting at birth. The grant pays $500 a year, and the full $7,200 is collected partway through year fifteen. Total contributions to that point: $37,500. Assume the account earns 5% a year. By the year the child turns 18, the plan holds roughly $74,000, and close to half of it, about $36,000, is money that never came out of a paycheque: grants plus the growth on everything.

Change the return assumption and the ending figure moves, but the structure of the result holds at any rate. The 20% arrives before the market does anything, which means the grant does its work even in flat years. It is the floor under the whole plan.

The rules that catch people

Three deadlines and one dependency are worth knowing early, because they cannot be fixed late.

The grant stops at the end of the calendar year the child turns 17. More restrictive: to receive any CESG at ages 16 and 17, the plan must show a history, either at least $2,000 contributed before the year the child turned 16, or annual contributions of at least $100 in any four earlier years. A family that opens an RESP for a 16-year-old with no prior plan has missed the grant entirely, even though the account itself still works as a tax shelter.

The dependency is the child's Social Insurance Number. No SIN, no grant, and the application runs through the financial institution when the plan is opened. Grant deposits typically land four to six weeks after a contribution; a statement with contributions and no matching deposits is worth a phone call.

And if the child never attends post-secondary education, the account unwinds in pieces rather than collapsing. Contributions come back tax free. Grants are returned to the government. The growth can move into the subscriber's RRSP if room exists, or come out as taxable income with an additional 20% charge. The common responses are patience, since plans can stay open for decades and "not at 18" is not "never," and a change of beneficiary to a sibling.

One more thing carries over from every other account: fees. The 20% grant does not make a 2% fund fee irrelevant; the same drag that erodes any portfolio erodes an RESP over an 18-year horizon, and the arithmetic in our piece on what an MER really costs applies unchanged here. Where the RESP fits alongside a family's RRSP and TFSA decisions depends on the household, but the grant is the feature no other account can match.

The number to hold on to

Strip the acronyms away and the RESP comes down to one figure: 20%, paid on the first $2,500 a year, until $7,200 has been collected. Every dollar of grant room a year passes by is a dollar that can only be recovered one catch-up year at a time, and after the child's fifteenth birthday the window starts closing for good. The math on the rest of the account, the deferral, the student-rate taxation, the compounding, is favourable. The grant is the part that is unmatched.

This is general information, not advice. The figures here are the federal rules as of mid-2026; grant eligibility, income thresholds, and provincial programs (Quebec and British Columbia run their own additions) depend on a family's specific situation.

Sources

• Canada Revenue Agency — Registered Education Savings Plans (RESPs)
• Employment and Social Development Canada — Education savings, the CESG, and the Canada Learning Bond