Amendment to Section 43B expands covered liabilities to include debentures and instruments deferring payment for tax purposes. The amendment inserts the phrase including debentures and any instrument by which the liability to pay is deferred to a future date into Explanation 3C, Explanation 3CA and Explanation 3D of section 43B, thereby expanding the references to loans, borrowings or advances to cover debentures and deferred-payment instruments for purposes of the section's timing and treatment rules.