A registered disability savings plan (RDSP) is a savings plan intended to help parents and others save for the long-term financial security of a person who is eligible for the disability tax credit (DTC).
Contributions to an RDSP are not tax deductible and can be made until the end of the year in which the beneficiary turns 59. Contributions that are withdrawn are not included as income to the beneficiary when paid out of an RDSP. However, the Canada disability savings grant (grant), the Canada disability savings bond (bond), investment income earned in the plan, and the proceeds from rollovers are included in the beneficiary’s income for tax purposes when paid out of the RDSP.
Canadian disability savings grant – The grant is an amount that the Government of Canada pays into an RDSP. The government will pay a matching grant of 300%, 200%, or 100%, depending on the beneficiary’s adjusted family net income and the amount contributed.
An RDSP can get a maximum of $3,500 in matching grants in one year and up to $70,000 over the beneficiary’s lifetime. A beneficiary’s RDSP can receive a grant on contributions made until December 31 of the year in which the beneficiary turns 49.
Canadian disability savings bond – for families who’s income is less than $47,630 (2019)
Carry forward for grants and bonds – Before the end of the year you turn 49 years of age, you can carry forward up to 10 years of unused grant and bond entitlements to future years, as long as you met the eligibility requirements during the carry-forward years
There is no annual limit on amounts that can be contributed to an RDSP of a particular beneficiary in a given year. However, the overall lifetime limit for a particular beneficiary is $200,000 (all previous contributions and rollovers that have been made to an RDSP of a particular beneficiary will reduce this amount). Contributions are permitted until the end of the year in which the beneficiary turns 59.
https://www.canada.ca/content/dam/cra-arc/formspubs/pub/rc4460/rc4460-19e.pdf