What happens if I contribute more than $1,500 in a year?

At the lower income tier, dollars beyond $1,500 earn no additional grant that year unless you have carry-forward room from missed years. The excess still grows tax-deferred and counts toward the $200,000 lifetime contribution cap (as of July 2026), but if maximizing grants is the goal, spreading contributions across years beats lump sums.

Is the grant taxable?

Not when it is paid into the plan. Grants, bonds, and investment growth are taxed only on withdrawal, in the hands of the beneficiary, who typically has little other income and often pays little or no tax. Your own contributions come out tax-free.

Can I still receive grants after age 49?

No. Grants and bonds stop at the end of the year the beneficiary turns 49. Contributions remain allowed until the end of the year they turn 59 and keep growing tax-deferred, but they no longer attract any match, which is why every grant-eligible year before 50 counts.

Canada Disability Savings Grant (CDSG)

SCEI (Subvention canadienne pour l'épargne-invalidité) in French

Quick definition

The Canada Disability Savings Grant (CDSG) matches RDSP contributions at up to 300%, paying as much as $3,500 of grant a year on just $1,500 of contributions, up to $70,000 over a lifetime. It is the richest matching program in Canadian personal finance.

Matching rates: up to $3 for every $1

The CDSG is deposited into the RDSP when you contribute, at a rate set by adjusted family net income. Below the threshold of $106,717 (as of July 2026), the government pays 300% on the first $500 you contribute and 200% on the next $1,000. A $1,500 contribution therefore attracts $3,500 of grant, an instant 233% return before any investment growth.

Above the threshold, the match is 100% on the first $1,000 contributed, for a maximum of $1,000 of grant per year. Even that is a guaranteed doubling that no ordinary investment offers.

CDSG matching rates by family net income (as of July 2026)
Family net income	Matching rate	Contribution for full grant	Maximum annual grant
$106,717 or less	300% on the first $500, 200% on the next $1,000	$1,500	$3,500
Over $106,717	100% on the first $1,000	$1,000	$1,000

Annual and lifetime limits

The regular annual maximum is $3,500 of grant at the lower income tier and $1,000 at the higher tier, with a lifetime maximum of $70,000 per beneficiary (as of July 2026). Grants are paid until the end of the year the beneficiary turns 49, after which contributions no longer attract any match.

At $3,500 a year, collecting the full $70,000 takes 20 years of $1,500 contributions. The age 49 cutoff makes the arithmetic blunt: a plan opened at 29 or earlier can still capture every grant dollar; each later year permanently forfeits some.

Carry-forward: up to $10,500 in one year

Grant entitlements accumulate from 2008 or from the year the beneficiary became eligible for the Disability Tax Credit, whichever is later, and the unused entitlements of the past 10 years can still be claimed. Catch-up grants are capped at $10,500 per year (as of July 2026), and the matching is applied at the highest available rates first.

For a beneficiary at the lower income tier with at least three years of missed entitlements, a $4,500 contribution in a single year can draw the full $10,500 of grant. Few dollars anywhere in the financial system work that hard.

Whose income counts: the age 19 turning point

Until the end of the year the beneficiary turns 18, the matching rate is set by the parents' family income. Starting in the year the beneficiary turns 19, it is set by the beneficiary's own income (and their spouse's, if any). Since many adult beneficiaries have modest incomes, they land at the 300% tier even if their parents never did.

This makes adulthood the prime matching window: from 19 through 49, each $1,500 that family members help contribute typically brings $3,500 of grant. One housekeeping rule protects it all: income for a given year is taken from tax returns filed two years earlier, so the beneficiary should file a return every year, even with zero income.

The 10-year holdback, briefly

Grant money is meant to stay invested. Every grant and bond dollar received in the 10 years before a withdrawal must be repaid at a rate of $3 for every $1 withdrawn, up to the full amount received in that window. The RDSP entry explains the holdback in detail; the short version is that the CDSG rewards savers who leave the plan alone until the government money has aged out.

The optimal contribution: $1,500 a year

Below the income threshold, $1,500 a year is the magic number: it captures the entire $3,500 annual grant, and dollars beyond it earn no additional match that year unless carry-forward room exists. Families with limited means should aim there before any other savings goal, since nothing else pays 233%.

And if even $1,500 is out of reach, the plan is still worth opening: the CDSB deposits up to $1,000 a year into the same RDSP with no contribution required at all.

In Canada

The CDSG is federal and applies identically in every province; unlike the RESP world, there is no provincial top-up anywhere, including Québec. The gateway to it all is Disability Tax Credit approval, which is what makes a person eligible to open an RDSP in the first place.

Anyone can contribute to the plan with the holder's written consent, so grandparents, siblings, and friends can fund the $1,500 that triggers the match. The grant lands regardless of who contributed.

Worked example

Marc is 25, approved for the Disability Tax Credit, and earns $24,000 a year. Since he is over 18, his own income sets the rate, putting him at the 300% tier even though his parents' income never qualified. His parents give him $125 a month, $1,500 a year, to deposit. Each year the CDSG adds $3,500. Kept up from 25 through 44, that is $70,000 of grants on $30,000 of contributions, the full lifetime maximum, all of it compounding tax-deferred for decades before withdrawals begin.