There are plenty of corporations to place the $. As others say, they even can send it overseas.
Note the overall assets on the top left of the 990 say 1,020,441,000
Cash heavy they are not. It is tied up in the buildings not yet delivered, etc. Plus, they send away money to other countries for "charity". I seem to recall seeing one where that amount was huge.
Remember they are also buying up expensive properties like the one in England.
All those operating losses on the returns means all that is $ back to them. Kind of like how a depreciation offsets income.
The change in the KH "loan" arrangement likely took those A/R off the books, reducing the A/R "asset" ( though they still count on it as a revenue stream, which is not accounted for as an asset until it is received) . It is just not on the books as a loan payable to them. The KH have been selling off. I am confused as to where the remaining KH deeds have gone. The WTBTS does have multiple corporations.
Yet, they are a 501(c) (3) , I am a bit confused about what seems to be a tax liability.