It is the amount of payment in each interval. O Future Payment O Initial Payment O Principal Payment O Regular Payment A type of annuity in which the payments are made at the end of each payment interval. Annuity Certain O Annuity Due O Annuity Immediate O Simple Annuity An annuity in which the payments extend over an indefinite length of time. O Annuity Certain Annuity Due O Contingent Annuity O Deferred Annuity A type of annuity in which the payments are made at the end of each payment interval. O Annuity Certain O Annuity Due Annuity Immediate Simple Annuity An annuity where payments are made at the end of each payment interval, with the first payment made on a later date. Certain Annuity Contingent Annuity Deferred Annuity Ordinary Annuity