<prompt> Human: I have my HSA account through HSA bank and recently opened a investment account with TDAmeritrade. I have 6000 in cash balance. It said I need 2000 to be eligible to invest. My question is, can I put all 6000 to the investment account? or I have to put 2000 in cash, then 4000 in the investment? please help, thanks.  <response>: Can you link to where you see that info? Every bank will have different requirements. Optum, where my HSA is, requires me to keep 2000 in cash, I can only invest anything above that. However, when browsing the hsabank.com site, I see that No HSA minimum balance required to begin investing, so linking or pasting the entire text related to your question will help us determine which it is! 