While most churches expect contributions from congregants (they couldn't survive without income), some faiths do pressure members to make contributions. The Mormon church says God demands members to tithe 10% of their income, and the church has 10s of billions in assets. They have been criticized for spending their wealth on real estate (without concern for property taxes) and opulent structures.
The funds gathered by religious organizations are used for religious or charitable purposes. For example, the "opulent structures" built by the Mormon church are religious edifices. As stated in the article from the , "Projections are speculative and do not reflect an understanding of how the church uses its income to bless the lives of people."