Every business operating in New Orleans is required to have an occupational license issued by the City. That occupational license is issued annually, and it’s essentially a permit that lets you operate, and a tax based on the revenue your company generates.
Since it’s an annual permit, you must renew it each year. According to the City’s Muncipal Code, which is available free on Municode.com, Section 150-952, that tax is due on January first of each year. If the tax is not paid by March 1, the tax is delinquent and subject to penalty and interest.
Note that the City has a whole slew of ordinances regarding occupational licenses, so this answer may change depending upon which industry the city’s classified you under. But, generally, if you’re running a business, you should add “Check on my Occupational License Tax” to the lists of tasks to get done at the beginning of each year.