Talk:Modified internal rate of return

the article is written in a very casual and imprecise language. Needs to be spruced up.

sandy 06:11, 8 April 2007 (UTC)[reply]

The external link entitled "MIRR Examples and Equations" goes to a page that talks about IRR, not MIRR. Should this link be moved to the IRR page? Thestorm042 02:24, 23 March 2007 (UTC)[reply]

The equation used in the MIRR calculation.

The equation used in the MIRR calculation is wrong. The correct equation is witghout the factor (1+finance rate) in the denominator and is on power of n-1 in the nominator rather than n. —Preceding unsigned comment added by Gtaljan (talk • contribs) 14:24, 29 January 2008 (UTC)[reply]

corrected--Samnikal (talk) 02:16, 20 October 2009 (UTC)[reply]

Present worth ratio

The article mentions a "present worth ratio", and includes citations, but provides no links or definition. Wikipedia has no article mentioning a "present worth ratio" except this one, and Google turns up this article first when searching for it.

Some elaboration of the concept would be beneficial.

IRR not correctly represented

The author states a myth about the IRR as a problem. There is no reinvestment rate used to calculate the IRR and there is not an assumed reinvestment rate occurring either. The IRR is equal the the discount rate that makes the NPV discount rate 0. So to state that the IRR uses a reinvestment rate is to state that the NPV uses a reinvestment rate, which of course is not true.

The MIRR is the IRR of the future value calculation.

The second problem about the irregular cash flows is true, but that is what the XIRR is designed for. —Preceding unsigned comment added by Planease (talk • contribs) 23:19, 14 September 2009 (UTC)[reply]