Question:
If you have a joint RESP with your ex and kid is no longer eligible for expenses due to your agreement, if you agree to a withdrawal from the RESP, does that mean you agree the kid is child of the marriage opening you up to possible share of s7?
I don't get what you are asking? RESP rules are set forth by the government and are, to the best of my knowledge, not subject to any agreements parents make.
A registered education savings plan (RESP) is a contract between an individual (the subscriber) and a person or organization (the promoter).
Under the contract, the subscriber names one or more beneficiaries (the future student(s)) and agrees to make contributions for them, and the promoter agrees to pay educational assistance payments (EAPs) to the beneficiaries.
There are two different types of RESP available: family plans and specified plans.
Any payment made by the subscriber can be withdrawn but, there may be taxes owed on any interest earned in the RESP and the government grants may have to be returned in proportion to the contribution they were granted under.
https://www.canada.ca/en/revenue-ag...registered-education-savings-plans-resps.html
Everything is done to the benefit of the beneficiaries education and not the subscriber's investment. Unless the RESP has two subscribers (e.g. both parents) then a subscriber can withdraw the funds at any time and pay the appropriate tax penalties. If the account has both parents as registered subscribers then you will need consent (in writing) from the other party as to how much can be withdrawn from the account.
I wouldn't recommend dissolving this asset as it is a benefit to the child... Unless the child is never going to do any post-secondary education in the time frame of the agreement with the promoter.
Good Luck!
Tayken