What is the last day for returns?
'Resi' — RE-zi, the plural of 'reso' (return). Short 'e', soft 'z'.
Ask this at the till when buying something you are unsure about, or when you already have an item and want to know how much time you have left. It shows you know your rights.
'Resi' is the plural of 'reso', the noun form of 'rendere' (to return). 'Ultimo giorno' means last day. The word order 'quando è' (when is) starts a direct question in Italian — no inversion needed unlike in English.
Entro quando posso restituire?
By when can I return it?
More casual word order.
Qual è la vostra politica sui resi?
What is your returns policy?
Formal — asks for the full policy.
Ho tempo fino a quando?
How long do I have?
Very informal.
Italian law sets a minimum 14-day return window for online purchases (EU directive), but for in-store purchases there is no legal requirement to accept returns at all — it is at the shop's discretion.