Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Can I use a different HSA than PayFlex that came with aetna?
There are some cases I'm aware of where a large employer will offer alternative HSA vendors, but this is not the norm as far as I'm aware, and would only be an option if your employer has already negotiated for this with your insurer. It's likely that this specific vendor is built in for the particular HSA product your employer has elected from Aetna. If this really ticks you off on principle, you can check if they offer a stable value fund. If so, you can essentially treat this money as part of your emergency fund, and somewhat reduce your own emergency fund and invest that money however you see fit.