G.S. 105-155

(a) Return. - An income tax return shall be filed at the place and in the form prescribed by the Secretary. The income tax return of every taxpayer reporting on a calendar year basis is due on or before the fifteenth day of April in each year. The income tax return of every taxpayer reporting on a fiscal year basis is due on or before the fifteenth day of the fourth month following the close of the fiscal year. These dates do not apply to a nonresident alien whose federal income tax return is due at a later date under section 6072(c) of the Code. The return of a nonresident alien affected by that Code section is due on or before the fifteenth day of the sixth month following the close of the taxable year. An information return shall be filed at the times prescribed by the Secretary. A taxpayer may receive an extension of time to file a return under G.S. 105-263.