People visiting Barcelona on a day trip could soon be forced to pay a tourist tax despite not staying overnight in the Spanish city.

Proposals set forward by a city councillor could see a new tax introduced targeting the thousands of people who visit the city for a number of hours through cruises and organised tours, but who are not subject to the current tourist tax.

The idea was first proposed by the council in January, but city councillor Gala Pin confirmed on Friday that a “tourist tax” for day-trippers is being investigated, The Local reported.

People who stay overnight in Barcelona already pay a tourist tax, which is reportedly collected through three main areas: hotels, cruises and homes owned by tourists. Since the tax was introduced in 2012 it has raised a total of €126m from visitors across Catalonia.

The Catalan government reported widespread revenues from the tourism tax that was introduced four years ago. Money raised from taxable tourist accommodation and activities across Catalonia increased by 5.5 per cent in 2015, with Barcelona alone responsible for generating €23m in tax – more than half of the total for the region, the Catalan News Agency reported.