What does it mean to establish an HSA?

This is the date the HSA is legally established according to the trust laws in the state that the HSA is governed under. For UMB, an HSA is established once the individual agrees to HSA disclosures, including the custodial agreement, Terms and Conditions of the HSA, and the UMB Healthcare Services Privacy Policy and there are funds in the HSA. While the individual may agree to the disclosures in advance, no funds should be deposited until the first day of the month that all eligibility requirements are met.