Portuguese Phrase
Pra que serve a caução?
Meaning
The sentence asks about the purpose of a security deposit. It is commonly heard when someone is signing a lease, renting a car, or any situation where a guarantee is required.
When to use
Use this phrase in informal conversations with landlords, agents, or friends when you want to clarify why a deposit is being requested. It works well in Brazil’s rental market, car rentals, and even in some service contracts.
✦Grammar Breakdown
Praqueserveacaução?
Pra (para)
Colloquial contraction of the preposition "para"; used in informal spoken Portuguese.
que (interrogative)
"Que" introduces a question meaning "what/for what".
serve (verbo servir)
Third‑person singular present of "servir" – here it means "to be used for" or "to serve".
a (artigo definido)
Feminine singular definite article, agreeing with the noun "caução".
caução (substantivo)
Noun meaning a security deposit or guarantee, often required in rental contracts.
? (ponto de interrogação)
Marks the sentence as a question.
🗨In Conversation
Pra que serve a caução?
What is the deposit for?
É para garantir que o imóvel será devolvido em boas condições e para cobrir eventuais danos.
It’s to guarantee that the property will be returned in good condition and to cover any possible damages.
✕Common Mistakes
Por que serve a caução?
"Por que" asks "why" (reason), not "for what purpose". The correct interrogative for purpose is "para que" or its colloquial form "pra que".
Pra que serve a caução
Missing the question mark can make the sentence look like a statement. Always end with "?" in written Portuguese.
↔Alternatives
Para que serve a caução?
What is the deposit for?
Qual a finalidade da caução?
What is the purpose of the deposit?
Para que serve o depósito de garantia?
What is the security deposit for?
Cultural Tip
In Brazil, a "caução" is the most traditional form of guarantee for rental contracts, usually equivalent to three months' rent. Many landlords now accept alternatives such as "seguro‑fiança" (insurance guarantee) or a guarantor. When asking about it, keep the tone informal (using "pra") if you’re speaking with a peer, but switch to "para que" in formal settings like a meeting with a property manager.