Step 1: Categorize Debentures
Redeemable Debentures: Repaid at a fixed end date or through installments during the company's operation.
Perpetual Debentures: Lack a maturity date and are not subject to repayment.
Secured Debentures: Collateralized by assets; can be either redeemable or perpetual.
Specific Coupon Rate Debentures: Pertains solely to the interest rate, independent of repayment terms.
Step 2: Determination
Consequently, debentures requiring payment after a defined period or in installments are classified as Redeemable Debentures.