A Urban Infrastructure Development Fund (UIDF) will be set up to ramp up infrastructure in tier-2 and tier-3 cities with an annual allocation of Rs 10,000 crore, Union Finance Minister Nirmala Sitharaman announced Wednesday. Presenting the Union Budget 2023-24, Sitharaman said states will be encouraged to leverage resources from the grants of the 15th Finance Commission, as well as existing schemes, to adopt appropriate user charges while accessing the UIDF.