Excel Functions in EAC ToolsExcel Functions in EAC Tools\Single life functionsSingle life functions\Other single life functionsOther single life functions\nEx

nEx

nEx calculates an 𝑛-year endowment factor.

Syntax

nEx(CurrentAge, FutureAge, InterestRate, MortalityTable, [AgeSetback], [CalculationMethod], [IssueAge])

Parameter Name

Description

CurrentAge

Current age 𝑥. May be provided as an integer, or as a fractional amount (e.g. years & months).

FutureAge

Future age = 𝑥 +𝑛.

InterestRate

The interest rate(s) to discount future payments to calculate the present value. May be a number, a percentage, a text string, a named range, or reference to a range.

·       Rates can be defined using these interest definitions.

·       Note: A value that is greater than 25% (i.e. 0.25) will be divided by 100; e.g. if you enter 2.75 it will be treated as .0275 or 2.75%.

MortalityTable

Mortality table definition text string.

AgeSetback

Mortality table age set-back. A negative number is a set-forward.
Note that you can also define a setback using the "/sb" option in the table definition (or "/sf").
Optional, default = 0.

CalculationMethod

Method of calculation for fractional ages.
Optional, default = 0

Method

Description

0

assume that 𝑛𝐸𝑥 is a linear function of 𝑛 for 0 ≤ 𝑛 ≤ 1, interpolate on values calculated at whole ages

1

assume that 𝑙𝑥+𝑡 is a linear function of 𝑡 for 0 ≤ 𝑡 ≤ 1 (UDD).

 

IssueAge

If using generational mortality projection, age at issue.
Optional, default = CurrentAge.