As per the attached guide, an HSA counts as "private coverage" and therefore, reimbursements through an HSA cannot be applied to the Trillium deductible as the member would not be 'out-of-pocket' for those prescription costs. Once all private and HSA coverage has been exhausted, then the out-of-pocket costs will contribute to the quarterly deductible.

Members of the Trillium Program must report all insurance and coverage, including health spending accounts.
​
myHSA can provide the member with a letter stating that the coverage has been exhausted. They can reach out to support@getmyhsa.com to request this.
​
Please note that while myHSA can provide information, we are not able to provide official advice and for that reason, it's always best to reference the guide and reach out to Trillium if you have questions:
​https://forms.mgcs.gov.on.ca/en/dataset/014-3693-87