The city council may call a referendum on approval of a property tax levy. The referendum may be held at the same time as any other city referendum or city election, but may not be otherwise held (i) on the day of any federal, State, district, or county election already validly called or scheduled by law at the time the tax referendum is called, or (ii) within the period of time beginning 30 days before and ending 10 days after the day of any other city referendum or city election already validly called or scheduled by law at the time the tax referendum is called. The referendum shall be conducted by the same board of elections that conducts regular city elections. A notice of referendum shall be published in accordance with G.S. 163A-1592. The notice shall state the date of the referendum, the purpose for which it is being held, and a statement as to the last day for registration for the referendum under the election laws then in effect.
The proposition submitted to the voters shall be substantially in one of the following forms:
If a majority of those participating in the referendum approve the proposition, the city council may proceed to levy annually a property tax within the limitations (if any) described in the proposition.
The board of elections shall canvass the referendum and certify the results to the city council. The council shall then certify and declare the result of the referendum and shall publish a statement of the result once, with the following statement appended: "Any action or proceeding challenging the regularity or validity of this tax referendum must be begun within 30 days after (date of publication)." The statement of results shall be filed in the clerk's office and inserted in the minutes of the council.
Any action or proceeding in any court challenging the regularity or validity of a tax referendum must be begun within 30 days after the publication of the results of the referendum. After the expiration of this period of limitation, no right of action or defense based upon the invalidity of or any irregularity in the referendum shall be asserted, nor shall the validity of the referendum be open to question in any court upon any ground whatever, except in an action or proceeding begun within the period of limitation prescribed herein.
Except for tax referendums on functions not included in subsection (c) of this section, any referendum held before July 1, 1973, on the levy of property taxes is not valid for the purposes of this subsection. Cities in which such referendums have been held may support programs formerly supported by voted property taxes within the general rate limitations set out in subsection (d) at any appropriate level and are not subject to the former voted rate limitation.
The proposition submitted to the voters shall be substantially in the following form: "Shall the property tax rate limitation applicable to the City/Town of ______ be increased from ______ on the one hundred dollars ($100.00) value of property subject to taxation to ____ on the one hundred dollars ($100.00) value of property subject to taxation?"
If a majority of those participating in the referendum approve the proposition, the rate limitation imposed in subsection (c) shall be increased for the city.
N.C. Gen. Stat. § 160A-209