I'd also like to know, if I can't contribute to an HSA, can I still get an FSA with the new company and enroll in the HDHP? If I can't make contributions to the HSA, will my employer still be able to make their contribution to the HSA that gets set up for me? And then can I use both funds from either the FSA or the employer's contributions to the HSA to pay for qualified medical expenses until the end of the year? Assuming this is all applicable, in 2017, I would enroll only in the HSA and contribute only to the HSA and not the FSA.