Delaware Investments National Municipal Income Fund is a closed-ended fixed income mutual fund launched by Delaware Management Holdings, Inc. The fund is managed by Delaware Management Business Trust. It invests in the fixed income markets of the United States. The fund primarily invests in investment grade municipal obligations, the income from which is exempt from federal income taxes. Its investments include airport revenue bonds, escrowed to maturity bonds, hospital revenue bonds, pre-refunded bonds, public power revenue bonds, school district general obligation bonds, and short term investments. The fund benchmarks the performance of its portfolio against the Barclays Municipal Bond Index and Lipper CE General & Insured Municipal Debt Funds (Leveraged) Average. Delaware Investments National Municipal Income Fund was formed on February 26, 1993 and is domiciled in the United States.