As the title says, this is my 1st year in HSAs. I wanted to open one with either Fidelity or Vanguard where I hold my taxable & retirement money, respectively, but neither will open one unless it is part of my benefits package at work... and it isn't.
My goal is to fully fund an individual HSA and dump everything into an S&P 500 Vanguard fund, or similar, and not touch it for potentially a few decades. But what are my options for setting up direct deposit and getting invested cheaply?