“Perciò” vs. “Perché” – Cause vs. Consequence

Perché = Because (Cause)

You already know this one!

• Ho chiamato il taxi, perché ero in ritardo.
  I called a cab because I was late.
• Non sono andata in spiaggia, perché faceva freddo.
  I didn’t go to the beach because it was cold.

Perciò = Therefore / For That Reason / So (Consequence)

Now flip the sentence. When you give the consequence, not the cause, use perciò:

• Ero in ritardo, perciò ho chiamato un taxi.
  I was late, so I called a cab.
• Faceva freddo, perciò non sono andata in spiaggia.
  It was cold, therefore I didn’t go to the beach.

Tip for Students

Both perciò and perché are invariable — they don’t change form.
They’re always followed by a verb.

And remember:

❌ Perciò ho chiamato un taxi ero in ritardo
✅ Ero in ritardo, perciò ho chiamato un taxi

Word order matters!

Perché vs. Perciò: What’s the Difference?

Read more: Siccome vs. Perché: How to Use Them