– Enter the Tax Code “97252910159”
– in the box “Support of third sector entities registered in the Runts referred to in Art. 46, C 1, of Legislative Decree No. 117 of July 3, 2017, including social cooperatives and excluding social enterprises constituted in the form of companies, as well as support of non-profit organizations registered in the registry.”

Donating 5×1000 does not cost anything, it is part of the taxes already allocated to the state.