Is it included?
Literally 'Does it come included?'. Use when asking if an item is part of a package or set, like a charger with a phone.
Literally 'Does it include it?'. Use when asking if a price, a menu, or a service includes something specific.
Literally 'Is it inside the price?'. A very direct way to ask if something is covered by the cost you've been quoted.
Excuse me, is breakfast included in the price of the room?
This is the daily menu. Is the drink included?
The tour costs one hundred dollars. Does it include transportation?
I'm going to buy the cell phone. Does the charger come included?
The phrase '¿Está incluido?' is universally understood and is the standard across Latin America. It's the most reliable phrase to use.
'¿Está incluido?' is also the standard phrase in Spain. While Spaniards use 'vosotros' for 'you all', this question doesn't change.
Perfectly standard. This question is often followed by asking about the tip: '¿La propina está incluida?' (Is the tip included?).
'¿Está incluido?' is common. You will also frequently hear the alternative '¿Viene incluido?' or '¿Viene con eso?' (Does it come with that?).
Using 'es' instead of 'está' — Saying '¿Es incluido?' is incorrect. 'Estar' (está) is used for states and conditions, like whether something is included. 'Ser' (es) is for permanent characteristics. Being included is a temporary state of the service or product.
Incorrect gender agreement — In Spanish, adjectives must match the gender of the noun. 'Incluido' is masculine. If you're asking about a feminine noun like 'la bebida' (the drink), you must change it to 'incluida'. For example: '¿La bebida está incluida?'
Incorrect number agreement — Just like with gender, you must match singular and plural. If asking about multiple items like 'los postres' (the desserts), you must say '¿Están incluidos?'. For feminine plural like 'las bebidas', it's '¿Están incluidas?'