Zero coupon bond applications must use Form 5B with detailed project, investment and investor information and electronic filing. Form No. 5B prescribes the application content for notification of zero coupon bonds, requiring applicant category (including infrastructure debt fund), bond details (number, issue amount, redemption amount, discount, life, issuance period), project-wise investment plans, supporting documents and a declaration that proceeds will be invested in accordance with clause (iv) or (v) of sub-rule (3) of rule 8B. Rule amendments mandate that Form No. 5B and accountant certificates in Form No. 5BA be furnished electronically under digital signature or electronic verification code, and require annual accountant certification of investments made from bond proceeds within two months of the relevant financial year.