B-Rank is one of the six classifications. It is preceded by C-Rank and followed by A-Rank. It is typically used when classifying techniques intended for ninja of the jonin or chunin level. B-Rank techniques are typically useful and can be learned relatively easily with enough time, such as the Shadow Clone Jutsu.
There are also B-Rank missions. These missions are usually assigned to jonin or chunin. Assignments can involve spying or assassinations, and ninja are expected to go up against enemy ninja during the course of the mission. B-Rank missions pay between 80,000 and 200,000 ryo.