There are some old threads on the site about this. I spent a couple of days down this rabbit hole years ago. I found some tax returns that were obviously fraudulent because they were exact duplicates of earlier returns (statistically impossible). The bar to investigate a church is very high in the USA, therefore Churches are the best vehicle to scam cash from the public. See IRS link below.
I noticed that Watchtower made a number of changes in response to the Candice Conti case. Her Attorney placed a Lis Pendens on some Society real estate and it caught them by surprise. Soon after they made many changes. https://en.wikipedia.org/wiki/Lis_pendens
Personally, I believe they never planned well for CIVIL litigation before the Candice Conti case, and it forced a different approach to asset protection. I believe they are transporting some money physically to Swiss banks in the Bahamas to avoid a paper trail and to always have liquid assets available. The unusual Florida airstrip purchase (and strange caretaker death) may be tied to this.