Skip to main content

RDSP Calculator

Updated

The RDSP calculator helps you estimate how much your Registered Disability Savings Plan will grow over time, including government matching grants (CDSG), bonds (CDSB), and investment returns. This tool shows the remarkable power of government contributions — where even a small personal contribution can be tripled by matching grants.

How this RDSP calculator works

Enter the beneficiary’s current age, existing RDSP balance, annual contribution, family income bracket (which determines grant and bond rates), expected investment return, and planned withdrawal age. The calculator projects government grants, bonds, investment growth, and the total balance at the target age.

Key features:

  • CDSG matching at 300%, 200%, or 100% depending on income
  • CDSB bond for low-income families (up to $1,000/year)
  • Lifetime caps enforced ($70,000 CDSG, $20,000 CDSB)
  • Year-by-year breakdown table showing contributions, grants, and growth
Feature Amount
Maximum annual grant $3,500
Contribution needed for max annual grant $1,500
Lifetime maximum per beneficiary $70,000

Source: Employment and Social Development Canada – Canada Disability Savings Grant and Bond, verified August 29, 2026. Paid until the end of the year the beneficiary turns 49. Amount depends on family income and can include carry-forward from up to 10 prior DTC-eligible years (annual carry-forward grant is capped at $10,500).

Feature Amount
Maximum annual bond $1,000
Lifetime maximum per beneficiary $20,000
RDSP lifetime contribution limit per beneficiary $200,000

Source: Employment and Social Development Canada – Canada Disability Savings Grant and Bond, verified August 29, 2026. No contribution required to receive the bond; paid until the end of the year the beneficiary turns 49.

Current Age of Beneficiary
Current RDSP Balance
Annual Contribution
Family Net Income
Expected Annual Return (%)
Withdrawal Start Age
Projected RDSP Value at Withdrawal
Total Personal Contributions
Canada Disability Savings Grant (CDSG)
Canada Disability Savings Bond (CDSB)
Total Government Money
Investment Growth
Projected Balance
Grant-Eligible Years Remaining

CDSG matching rates (2026)

Family Net Income On First $500 On Next $1,000 Max Annual CDSG
Under $117,045 300% ($1,500) 200% ($2,000) $3,500
Over $117,045 100% ($1,000) $1,000

Lifetime CDSG cap: $70,000

For lower-income families, contributing just $1,500 per year attracts the maximum $3,500 in annual government matching. That is a 233% immediate return before any investment growth.

CDSB eligibility (2026)

Family Net Income Annual CDSB
Under $37,487 $1,000
$37,487 – $58,523 Partial (prorated)
Over $58,523 $0

Lifetime CDSB cap: $20,000

The CDSB requires no personal contribution at all — the government deposits it directly into the RDSP.

RDSP vs other registered accounts

Feature RDSP TFSA RRSP
Contribution limit $200,000 lifetime $7,000/year 18% of income
Tax deduction No No Yes
Tax-free growth Yes Yes Yes (deferred)
Government matching Up to 300% None None
Tax on withdrawal Grants & growth taxed None Fully taxed
Impact on benefits May affect GIS/OAS No Yes
Best for People with DTC eligibility General savings High earners

RDSP contribution strategy

The minimum-contribution approach

If the beneficiary’s family income is under $117,045, contributing just $1,500 per year maximizes the CDSG at $3,500. This is the most efficient approach — you get $3,500 in free grants for just $1,500 of your own money.

The maximization approach

To maximize lifetime grants, contribute consistently from a young age. The CDSG is available until the end of the year the beneficiary turns 49, so starting early gives you more years of grants plus more time for compound growth.

Carry-forward rules

If the beneficiary has unused CDSG room from previous years (since 2008), up to $10,500 in grants can be received in a single year by making a larger contribution. This is valuable for anyone who opens an RDSP later in life.

The 10-year holdback rule

The Assistance Holdback Amount (AHA) rule is the main restriction on RDSP withdrawals:

  • Within 10 years of receiving grants/bonds: $3 of government contributions (grants + bonds) must be repaid for every $1 withdrawn
  • After 10 years: No repayment required
  • Strategy: Stop contributing and receiving grants 10 years before you plan to make significant withdrawals

Example: If you stop contributing at age 49, the AHA period ends at age 59, and you can make full withdrawals starting at 60 (when LDAPs begin).

How the RDSP affects other benefits

RDSP assets and income may affect provincial disability benefits differently depending on the province. However, the federal government excludes RDSP income from the calculation of:

Important: Withdrawals may affect GIS and provincial social assistance. Consult a financial advisor familiar with disability benefits.

🏦

Get a $25 cash bonus when you open a free Wealthsimple chequing account.

No monthly fees · Earns interest on every dollar · Free e-Transfers · Takes 3 minutes

Claim Your $25 →