When I first became Accounts Servant (before the Elder/MS structure) I was surprised to learn that the Watchtower Society charged interest on Kingdom Hall loans. The rate was 3%. Typical interest rates from commercial lenders on home mortgages at the time was about 6% to 7% ... I questioned the practice, and the JW man who turned to accounts records over to me made the point that inflation was about 3% or 4%, and therefore, the Soceity was merely getting back the same buying power it had when it loaned the money ... and it beat bank rates, so he saw nothing wrong with it. I eventually adopted this view.
I was troubled because of the Bible verse that says not to charge our brothers interest. The actual verses were talking about charging interest when our brother is in need. The idea was not to take advantage of our brother's unfortunate situation. In other verses, however, Jesus used the illustration of the Master leaving assets with his servants and upon returning from a long journey, expecting what is his with interest ... this was an illustration, but Jesus used a common practice to teach something he was inferring was honorable.
Originally, the Kingdom Hall fund, as told to me by older JWs, was a private fund where the 3% charge was a condition of the donated fund, and was designed only to offset the effects of inflation. However, in the 1980s and 1990s the Kingdom Hall building funds grew significantly with the quick-build program ... so the funds are donated by the JWs in the forst place ... and it seems that loaning back out, especially to poorer congregations, at no interest, would have been a kinder thing to do. Though 3% is not a lot of interest, the gesture alone would have endeared poorer JWs to the Society.
Now that the Society is the beneficiary of Kingdom Hall real property in the event of the demise of a congregation, then they inherit what the JWs paid for with work, materials, and borrowed money at interest ... and then any appreciation in value all go to the Society ... I don't know, but it just seems like the kinder, nicer Watchtower died a long time ago. What JWs have today is the full-fleged wolf with all Sheep's cl;othing removed, collecting his interest and profits on the backs of hardworking JWs - all in the name of their god.