The counterparts of the total merit index NVI for farmers in the Netherlands and Flanders are the TPI and NM$ for their fellow dairy farmers in the United States. NM$ stands for Lifetime Net Merit. It is the official index for the US. NM$ is an economic breeding value that is a measure of the expected additional net profit that daughters of a bull will provide over their lifetime.
TPI stands for Total Performance Index and is provided by the US herdbook. Elsewhere in the world, TPI is often used to compare bulls.