Hi Guys,

I have been asked for an explaination from our Finance guys as to why
the IRR function works on one set of data but not on a second set
almost identical:-

I personaly have never used the IRR function so am unsure of how it
works, I did read the help which said that it will ignore zeros and
text cells.

I have 2 sample sets of data the first in Cells A3 to A25, with this
function in Cell A27 =IRR(A3:A25,0.15)
Data for Cells A3:A25
0
3,450
-14,991
-10,956
5,758
3,459
3,574
3,618
3,442
4,452
4,543
4,541
4,646
4,782
4,857
4,876
4,586
4,752
1,280
-146
3
6
4

I get the Result of 16% which is expected.

The second set of Data which is in Cells B3:B25 is:-
0
3450
-5696.25
-3205.64496
3875.768692
1620.176714
1715.67423
1737.986397
1538.93941
2522.570213
2585.826361
2553.744174
2626.034849
2725.876446
2762.244492
2737.946899
2402.134025
2518.01363
727.3978514
-144.3323887
3.337994196
5.722275765
4.291706824

With the Function =IRR(B3:B25,0.15) in Cell B27 With this I get the
result #DIV.0!.
I have found that if I change the value is Cell B5 from -5696.25 to a
lower figure of -10,000 the Function works.

Any Help on this would be great

Many Thanks

Mark