Fixed indexed annuities, or FIAs, have grown in popularity over the past several years. This is due in part to these financial vehicles being able to provide ongoing retirement income in the future, as well as the opportunity to obtain increased interest growth over those of a regular fixed annuity. These product guarantees, of course, are backed by the financial strength and claims-paying ability of the issuing insurer. Fixed index annuity owners are also able to keep principal protected from market risk - even if the underlying index performs negatively. It should be noted, however, that any early withdrawals taken may result in loss of principal and credited interest due to surrender charges.