Covered bonds have been controversial because bond holders rank higher than depositors in the event of a bank failure.
Finance Minister Bill English said covered bonds allowed banks to diversify their funding by providing access to new investors.
English said the covered bond register would offer greater clarity for investors and depositors.
He said the new framework will come into effect this year, with a transition period to enable the registration of existing covered bonds programmes.
In 2010, the Reserve Bank put an upper limit on the amount of covered bonds issued by locally incorporated banks to a maximum of 10 per cent of the total assets of the issuing bank.