Infrastructure debt fund scheme focuses investment in infrastructure-related debt instruments and permissible assets under mutual fund rules. An Infrastructure debt fund scheme is a mutual fund scheme required to allocate the vast majority of its assets to debt securities or securitized debt instruments of infrastructure companies, infrastructure capital companies, infrastructure projects, or special purpose vehicles created to promote infrastructure investment, while also being permitted to hold other allowable assets and bank loans in respect of completed, revenue-generating infrastructure projects or special purpose vehicles.