What Is A Fixed Indexed Annuities? 
Indexed annuities are different from other fixed annuities because of the way it credits interest to your annuity 's value . Some fixed annuities only credit interest calculated at a rate set in the contract . Other fixed annuities also credit interest at rates set from time to time by the insurance company . Indexed Annuities credit interest using a formula based on changes in the index to which the fixed indexed annuity is linked . The formula decides how the additional interest , if any , is calculated and credited . How much additional interest you get and when you get it depends on the features of your particular contract ? 