Tu or Lei? How to Know When to Be Formal in Italian

Ever been mid-conversation in Italian and suddenly frozen, unsure whether to say ciao or buongiorno — tu or Lei? Italian has social rules, often unwritten, that decide how formal or informal your speech should be. Here’s how to read the situation and always know which one to use.

What's the difference between "Tu" and "Lei"?

Tu is the informal “you,” used with friends, family, people your own age, and anyone you’re on relaxed, familiar terms with. Lei is the formal “you” — grammatically the third person singular — used with strangers, older people, and in professional or official settings. Choosing the wrong one doesn’t just sound odd, it can come across as rude or overly stiff, depending on the direction you get it wrong.

When should you use "Tu"?

Use tu in spontaneous, everyday conversations — with friends, family, people your own age or younger, and anyone you already know in a relaxed context.

Ciao, come stai? — “Hi, how are you?”
Che fai di bello questo fine settimana? — “What are you up to this weekend?”
Ti chiamo più tardi. — “I’ll call you later.”

Even when tu isn’t the grammatical subject of the sentence — like in ti chiamo più tardi, where ti is a pronoun standing in for “you” — the verb is still conjugated in the second person singular, which is what makes it informal.

The informal greeting is ciao. One important rule: don’t say ciao to someone you don’t know or are meeting for the first time — it can come across as rude.

When should you use "Lei"?

Use Lei — grammatically the third person singular — with older people, strangers, in professional or official contexts (your boss, a job interview, your doctor), and with staff at shops or restaurants you don’t know personally.

Buongiorno, come sta? — “Good morning, how are you?”
Mi scusi, può aiutarmi? — “Excuse me, could you help me?”
Piacere di conoscerLa. — “Pleasure to meet you.”

Lei always takes the third person singular verb form, regardless of whether you’re speaking to a man or a woman: Lei è italiana? / Lei è italiano? — “Are you Italian?”

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"Scusa" or "scusi"? A quick trap to avoid

Scusa is informal, scusi is formal — mixing them up is one of the most common slips beginners make, precisely because they look so similar.

Formal vs. informal in real situations

At a bar you know well, where you know the staff:
Ciao, mi fai un caffè? — “Hey, can you make me a coffee?”

At a bar you’re visiting for the first time:
Buongiorno, mi fai un caffè, per favore? — “Good morning, could I get a coffee, please?”

Asking someone your age for directions:
Scusa, sai dove è la stazione? — “Excuse me, do you know where the station is?”

Asking someone much older for directions:
Mi scusi, sa dirmi dove è la stazione? — “Excuse me, could you tell me where the station is?”

Meeting someone new casually (e.g. at a friend’s party):
Ciao, io sono Maria. — “Hi, I’m Maria.”

Meeting someone new formally:
Buongiorno, piacere di conoscerLa, mi chiamo Maria. — “Good morning, pleasure to meet you, my name is Maria.”

Common mistakes to avoid

Jumping straight to tu with your boss or someone much older than you
Saying ciao in a situation that calls for formality
Mixing up scusa (informal) and scusi (formal)

If you do slip and use tu instead of Lei, don’t stress — just smile and self-correct: Scusi, volevo dire “Lei”. — “Sorry, I meant to say ‘Lei’.” Italians genuinely appreciate the effort.

Not sure? Follow these 3 rules

When in doubt, start formal. You can always shift to informal later once you get a read on the other person.
Let the other person invite the switch. If they want to use tu, they’ll say so: Diamoci del tu — “Let’s use tu with each other.”
In Italian workplaces, Lei is the default, and the switch to tu usually only happens after some time.

Formality in Italian isn’t only about words, either — informal settings come with more hand gestures and closer physical distance, while formal settings call for more restrained eye contact and more personal space.

Quick recap

Tu → friends, family, people your age, casual settings
Lei → strangers, elders, professional/official contexts
Ciao is informal only; scusa is informal, scusi is formal
When unsure, start formal — you can always loosen up later

The more Italian you listen to, the more natural this choice becomes — it’s less a grammar rule than a feel you build with practice.

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