Here are some other important things to note about the HSA:
To be eligible for the HSA, you must participate in a CDHP medical option and you cannot have any other medical coverage (including coverage under your spouse's plan) or a Flexible Spending Account. If enrolled in the HSA, you may participate in the Limited Purpose Flexible Spending Account.
Many popular online tax services can easily incorporate your HSA contributions and withdrawals into your tax return—using IRS Form 8889. Citibank will send you two tax forms—a 1099-SA (reports distributions) and a 5498-SA (reports contributions)—which contain information to help you complete Form 8889.
If you terminate employment or un-enroll from a CDHP as an active team member during Annual Enrollment, due to a life event, or loss of eligibility, your HSA account will be moved to an ‘unaffiliated account status’ with Citibank. As a result, you will be responsible for paying the monthly maintenance fee, in addition to all other transaction fees associated with your HSA account while it remains open. You will receive a letter from Citibank that will provide more details on this process as well as information on who to contact with any questions.