A 4th edition of the Benchmark Definition was completed in April 2008 by the Investment Committee's Working Group on International Investment Statistics. The revision required several years of work and consultations with data compilers (statisticians) and data users. It improves existing concepts and definitions in the light of national practical experiences and incorporates concepts and definitions on elements missing from the previous edition (such as, cross-border mergers and acquisitions, special purpose entities, ultimate investing country).
The Benchmark Definition provides:
The Benchmark Definition is fully compatible with the underlying concepts and definitions of the International Monetary Fund’s (IMF) Balance of Payments and International Investment Positions Manual, 6th edition (BPM6) and the general economic concepts set out by the United Nation’s System of National Accounts (SNA).