Yes, RDSP grants are retroactive under certain conditions. If you opened an RDSP in 2008 or later and contributed less than the maximum amount allowed, you can receive the unused grant and bond from previous years. You can use these amounts for your current RDSP or for RDSPs opened in January 2011 or later. To receive unused grant and bond amounts, you must have been eligible for the grant and bond in previous years. You can apply until December 31 of the year when you turn 49. The amount of the bond and grant you qualify for depends on your family income in those years. The amount of the grant you receive also depends on your total contributions to your RDSP. The matching rates will be the same as those for the year in which the grant entitlement was earned. Matching rates for RDSP Contributions will be paid using all grant entitlements at their highest rate first. Grants and bonds will be paid based on unused entitlements, up to an annual maximum of: $10,500 for grants; $11,000 for vouchers. The maximum grant amount payable over the lifetime of the beneficiary is $70,000. The maximum bond amount payable over the lifetime of the beneficiary is $20,000.