Eric Remjeske, president of Devenir Group LLC, said since Congress authorized these accounts in 2003, the number of accounts and the average account balance have both grown over time. By 2011, there were 6.2 million HSAs, according to Devenir Research; this past June, that number had grown to 26.3 million.
More money is flowing into HSAs every year. Devenir Research data show that $43.5 billion was deposited in HSAs in 2018, with $10.2 billion invested, a sharp increase from the year before when $31.5 billion was deposited and $5.5 billion invested. By 2021, Devenir estimates that number will rise to $67 billion deposited with $21.2 billion invested.