IFCA International affirms the Protestant biblical canon of 66 books as the complete and authoritative written Word of God. The Old Testament comprises 39 books, the New Testament 27 books. This canon is the sole standard of faith and practice; nothing is to be added to or subtracted from it. The deuterocanonical books (Tobit, Judith, 1-2 Maccabees, Wisdom, Sirach, Baruch, Letter of Jeremiah, and additions to Daniel and Esther) found in Catholic and Orthodox Bibles are not included in the IFCA canon and are not considered binding.

The IFCA affirms that the canonical books are the genuinely inspired writings of the apostles and their associates, bearing the mark of apostolic authority. The criterion for canonicity is apostolic authorship or apostolic endorsement. The canon was essentially settled in the early church, though some books required longer to gain universal recognition. The canon is now closed: no new books may be added, and existing books may not be removed.

The IFCA recognizes the distinction between the original inspired manuscripts (autographa) and subsequent copies and translations. While translations may contain minor variations and all copies are subject to textual criticism, the original manuscripts are the standard of truth. The IFCA's doctrine of biblical inerrancy and its commitment to sola scriptura depend upon the integrity of the canon and the reliability of the biblical text.