The Free Will Baptist denomination affirms the Protestant 66-book biblical canon (39 OT + 27 NT) as the complete and authoritative Scripture and does not include deuterocanonical books in the canon. This reflects the denomination's Protestant evangelical heritage and its commitment to sola scriptura (Scripture alone) as the authority for doctrine and practice.

The deuterocanonical books—Tobit, Judith, Wisdom, Sirach, Baruch, 1-2 Maccabees, and additions to Esther and Daniel—are not included in Free Will Baptist Bibles or recognized as Scripture. While these books may have historical or cultural interest, they do not carry scriptural authority in Free Will Baptist doctrine and practice. The canon is understood as closed at the 66 books, which are seen as the complete revelation of God's will for salvation and Christian conduct.

Free Will Baptist commitment to the Protestant canon reflects its Baptist heritage and its emphasis on sola scriptura. The authority for doctrine rests exclusively with the 66 books, not with any additional sacred texts or ecclesiastical tradition.