Tax-free bond specification requires bondholders to register holdings to qualify for tax exemption under income tax provision The Central Government specifies a particular 7-year series of tax-free bonds issued by the corporation, noting denomination, interest rate, aggregate issuance and distinctive serial numbers, and makes the tax exemption contingent on the holder registering their name and holding with the issuer as a precondition for the benefit under section 10(15)(iv)(h).