Which word can I use in english to indicate the price that every month I have to give to the barn for my horse? For the food, the box ecc? In italian we say "pensione"...

We say "board" here in America. Sort of like the phrase "room and board" to indicate food and shelter.
You could say 'livery' or 'board'😊
In English you say "board"
Join the fun and sign up to connect with our 200,000 members!