This poster on reddit claims that there is a special department about bethel which specialize in gathering information about the JWs, presumably related to income:
Since last September 1, I have worked in an almost clandestine department, installed in Patterson, in the area of the new video studio, an office with several faithful brothers, all university graduates (a graduate in sociology at Chicago and some older brothers from the service department, with the help of several elders of the U.S. franch service desk).
They have been conducting a study in more than 100 congregations across the United States, with fieldwork, taking advantage of special talks and Circuit Assemblies, developing profiles on:
Family Groups and age demographics - Young couples with children under ten years - Married Couples with teenage children under 18 - Adolescents and young ones under 25 years.
Beauty and Fashion trends of: - Young Couples - Teenagers - Young people under 25 years.
Racial groups in U.S. English congregations Racial groups in U.S. Spanish congregations
Economic situation of the congregation and members. - Property, vehicles, jobs.
The idea of the Coordinating Committee, which oversees this study on sociology and trends, is to analyze the real situation in all congregations in the United States, create a profile to modify procedures to advance the new e-cult 3.0.
It aims to soften some procedures, modify the [theocratic?] vocabulary and make some small cosmetic changes to be discussed within the Governing Body.
When we have more news, we will give more light, you can be sure!
The existence of this department is very confidential, they are scared to possible leaks. Traceable documents are very limited, and those who have done fieldwork know the use of all data that they have been collecting.
The same study is being done in Mexico during 2016-2017.
Hedmano Replicante and his girlfriend (former Bethelite) in Patterson.