Non-denominational Christian institutions or churches are those not formally aligned with an established denomination, or that remain otherwise officially autonomous. Non-denominational is generally used to refer to one of two forms of independence: political or theological. That is, the independence may come about because of a religious disagreement or political disagreement. Some churches say they are non-denominational because they have no central headquarters (though they may have affiliations with other congregations). Other churches say they are non-denominational because their belief structures are unique.
Members of non-denominational churches often consider themselves simply "Christians". However, the acceptance of any particular stance on a doctrine or practice (for example, on baptism), about which there is not general unanimity among churches or professing Christians, may be said to establish a de facto credal identity. In essence, this would mean that each non-denominational church forms its own unofficial "denomination" with a specific set of tenets as defined by the beliefs and practices of its own congregation.