The National Transport Authority is responsible for the licensing and regulation of small public service vehicles (SPSVs) in Ireland. This refers collectively to taxis, wheelchair accessible taxis, hackneys, wheelchair accessible hackneys and limousines.

SPSVs are defined as vehicles capable of carrying for hire or reward a maximum of eight passengers in addition to the driver.

There are five basic categories of vehicle licence:

In order to operate a vehicle as an SPSV in Ireland you must first be licensed by the National Transport Authority and meet the varying licensing conditions specific to the category of SPSV for which you are applying. A licensed SPSV may only be operated for hire or reward by an appropriately licensed SPSV driver.