Also, do you have paid ministers? If so, where does their salary come from?
No. In the Christian congregation of Jehovah's Witnesses no one is paid for anything that they do. Jehovah's Witnesses do not charge for the Bibles they publish, or any of their publications for that matter. All of their meetings are open to the public and are free. No collection plates are passed, and no money stipulations are made.
The electric bills, the money for the publishing, disaster relief efforts, the making of audio and video releases, along with a plethora of other things is funded completely by voluntary donations. There is a donation box in each Kingdom Hall for Kingdom Hall expenses, and also for the Worldwide work. No one is required to donate, and it depends on each one just what he wants to give, and it is done in private so no one else knows. People who are not Jehovah's Witnesses also feel inclined to donate money and that is accepted. But the Kingdom Halls have been closed since the pandemic worldwide, and so voluntary contributions have been done through the website from those that chose to.
In the nation of Israel Jehovah made a special contribution for the tribe of Levi, for they did not receive a land inheritance, and thus the 12 tribes that did receive one were to provide for the tribe of Levi, food and land. The Christian congregation is not under the Mosaic law, and not under the law to tithe (that is give a 10th for the priestly tribe of Levi).
Jesus set the example when he said "you received free give free."
Jehovah's Witnesses live by this scripture when it comes to making a living:
"
Surely you remember, brothers, our labor and toil. We were working night and day, so that we would not put an expensive burden on any one of you, when we preached the good news of God to you."-1 Thessalonians 2:9.
The apostle Paul himself, although a missionary, and always traveling and preaching did not make himself a burden on the brothers by expecting money from them. In fact we are told that he used his trade of making tents to make a living:
(Acts 18:3) and because he had the same trade, he stayed at their home and worked with them, for they were tentmakers by trade.
(Acts 20:34) You yourselves know that these hands have provided for my own needs and the needs of those with me.
Thusly, each elder among the congregations of Jehovah's Witnesses works to provide for themselves and their families. No one is paid to preach or teach the good news of God's kingdom. It is all done freely, without charge.
