Low-Income Housing Tax Credits, or LIHTCs, are used to either construct new rental buildings or renovate existing buildings. Two annual tax credits are available for HUD multifamily financing. The nature of the project dictates the credit received. The 4% tax credit (30% subsidy) is for the acquisition of existing buildings for rehabilitation and new construction financed by tax-exempt bonds. The 9% tax credit (70% subsidy) is usually for new construction and substantial rehabilitation without federal subsidies.