When performing a benchmark it can be useful to be aware of the differences in counting guidelines between the NESMA and IFPUG FPA methods. From 1990 on NESMA and IFPUG have worked closely together to define a common standard. During the last few years the IFPUG counting guidelines have gone through several revisions. In former areas of dispute the IFPUG has mostly adopted the NESMA guidelines. Practically, this has resulted in a continually lower function point count for IFPUG for the same functional sample.
This document describes the present-day differences in the NESMA and IFPUG counting guidelines. If you want to know “what and when” was changed, please consult the separate document: “Historical review NESMA & IFPUG” (available in Dutch only).