INVESMENTS

Funds in an HSA can be invested in a manner similar to investments in an Individual Retirement Account (IRA). Investment earnings are sheltered from taxation until the money is withdrawn (and can be sheltered even then, as discussed in the section below).
While HSAs can be "rolled over" from fund to fund, an HSA cannot be rolled into an IRA or a 401(k), and funds from these types of investment vehicles cannot be rolled into an HSA, except for the one time IRA rollover allowed above. Unlike some employer contributions to a 401(k) plan, all HSA contributions belong to the participant immediately, regardless of the deposit source. A person contributing to an HSA is under no obligation to contribute to his or her employer-sponsored HSA, although employers may require that payroll contributions be made only to the sponsored HSA plan.