IIA Three Lines Model Statement of Position (2026)
What is IIA Three Lines Model Statement of Position (2026)?
The IIA's 2026 update to the Three Lines Model: five principles on how boards get reliable assurance and advice, what independence requires, what the board and each of the three lines contribute, how assurance providers coordinate, and how to keep roles clear when work is outsourced or combined. It comprises 27 controls organised across 4 domains, and applies in International.
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