Informal:
* Até mais! (Ah-tay my-ahs!) - This is the most common and versatile way to say "See ya later" in informal situations.
* Até logo! (Ah-tay lo-go!) - Similar to "Até mais!", this is also a good option for informal situations.
* Falou! (Fah-loo!) - This is a very casual and friendly way to say "See ya later". It literally means "You talked", but is used as a slang farewell.
* Tchau! (Chow!) - This is another slangy way to say "See ya later".
Formal:
* Até breve! (Ah-tay breh-veh!) - This means "See you soon" and is a more formal option.
* Até mais tarde! (Ah-tay my-ahs tahr-deh!) - This means "See you later" and is also a formal option.
Other options:
* Até amanhã! (Ah-tay ah-mahn-yah!) - This means "See you tomorrow".
* Até segunda! (Ah-tay se-goond-ah!) - This means "See you Monday".
Important Note: When choosing the right phrase, consider the situation and your relationship with the person you are talking to. "Até mais!" and "Até logo!" are generally safe options for most situations.