XIRR - script function

XIRR() returns the aggregated internal rate of return for a schedule of cash flows (that is not necessarily periodic) represented by paired numbers in pmt and date iterated over a number of records as defined by a group by clause. All payments are discounted based on a 365-day year.

Qlik's XIRR functionality (XIRR() and RangeXIRR() functions) uses the following equation, solving for the Rate value, to determine the correct XIRR value:

XNPV(Rate, pmt, date) = 0

The equation is solved using a simplified version of the Newton method.

Syntax:  

XIRR(pmt, date )

Return data type: numeric

Arguments:  

• pmt: Payments.The expression or field containing the cash flows corresponding to the payment schedule given in date.
• date: The expression or field containing the schedule of dates corresponding to the cash flow payments given in pmt.

Limitations:  

Text values, NULL values and missing values in any or both pieces of a data-pair will result in the entire data-pair to be disregarded.

Examples and results:  

Add the example script to your document and run it. Then add, at least, the fields listed in the results column to a sheet in your document to see the result.

Cashflow:

LOAD 2013 as Year, * inline [

Date|Discount|Payments

2013-01-01|0.1|-10000

2013-03-01|0.1|3000

2013-10-30|0.1|4200

2014-02-01|0.2|6800

] (delimiter is '|');

 

Cashflow1:

LOAD Year,XIRR(Payments, Date) as XIRR2013 Resident Cashflow Group By Year;