North Carolina Administrative Code Title 17 — Revenue
17 NCAC 12A .0302 — Amount Of Bond Required
For motor carrier bonds exceeding five hundred dollars ($500.00), the amount of bond shall be rounded to the nearest one thousand dollars ($1,000.00). If the amount required is exactly between two one thousand dollar ($1,000.00) increments, the amount shall be rounded to the higher of the two.
Source: official text