The Internal Revenue Service has issued guidance (Notice 2020-15) that allows sponsors of high deductible health plans (“HDHPs”) to reimburse up to the full cost of medical care services and items for testing and treatment of COVID-19 before plan participants meet the plan’s minimum statutory deductible.  Accordingly, participants in a HDHP that waives cost sharing or deductibles for medical expenses related to the testing and treatment of COVID-19 will continue to be eligible to receive favorable federal tax treatment for amounts contributed to their Health Savings Accounts.  The guidance also includes a reminder that any vaccination costs continue to be considered preventive care and can be reimbursed by HDHPs without cost sharing before the plan’s deductible is met.