Does my church have to file a 990-T or any tax form for profit from an investment used to further its nonprofit mission?

Section 512(b)of the Internal Revenue Code excludes interest and dividends from ordinary investments from unrelated business income.

Unrelated business income is what triggers the need for churches to file 990-Ts.

BUT...please seek the advise of a professional tax advisor if you have any doubts after reading that section of the IRC =)