N.C. Gen. Stat. § 105-160.6

An income tax return of an estate or a trust shall be filed as prescribed by the Secretary at the place prescribed by the Secretary. The return of every fiduciary reporting on a calendar year basis shall be filed on or before the 15th day of April in each year, and the return of every fiduciary reporting on a fiscal year basis shall be filed on or before the 15th day of the fourth month following the close of the fiscal year. A fiduciary may receive an extension of time to file a return under G.S. 105-263.