Returns the probability of survival from a specified age to a future age.

GETSURVFRACTION("DefName", CalculationDate, AgeCurrent, AgeFuture, Type, AgeCA (optional))

"DefName": the name of the Annuity Factor Definition that includes the mortality table to use. Note that this name must be contained in quotes.

CalculationDate: date upon which the probability is to be determined (applicable for floating 417 basis or definitions that include projections).

AgeCurrent: the age from which survival probability is to be determined.

AgeFuture: the age to which survival probability is to be determined.

Type: 0: Participant probability, 1: Beneficiary probability, 2: joint probability (probability that both participant and beneficiary survive).

AgeCA (optional): the current age of the beneficiary from which the survival rate should be determined. Leave blank or zero if not determining joint life mortality.

GETSURVFRACTION("LSFactor", CALCDATE, 55, 65, 0): Will return the probability of a person currently age 55 surviving to age 65 based upon the participant mortality table used in the Actuarial Equivalence Definition, LSFactor.