Returns the factor for the Annuity Factor Definition def_name but determines the factor for non-integer ages using interpolated Nx and Dx (rare).

ANNFACTORINTERPCOMM("AEDefName", CalculationDate, CurrentAge, DefAge (optional), CAAge (optional), Rate1 (optional), Rate2 (optional), Rate3 (optional), PeriodCertain (optional), ContinuationPct (optional), Duration1 (optional), Duration2 (optional))

AEDefName: this must be contained within quotes.

CalculationDate: fixed date such as DATE(1,1,2010) or system date such as CALCDATE.

CurrentAge: the current age at which point the factor should be calculated.

DefAge: the age at which benefits are to be paid (leave blank or zero if immediate).

CAAge (optional): the age of the beneficiary at which point the factor should be calculated. Leave blank or zero to have this determined based upon beneficiary specified within the calculation.

Rate1, Rate2, Rate3 (optional): use to override segment interest rates. Enter values as decimals (ex 1.23% as 0.0123).

PeriodCertain (optional): enter value for certain period annuity forms of payment.

ContinuationPct (optional): enter continuation value for joint and survivor forms of payment.

Duration1, Duration2 (optional): enter values to override the interest segment rate period (ex. 5 and 15).

ANNFACTORINTERPCOMM("annFactorLA", CALCDATE, 62.5): returns an immediate factor at age 62.5.