Portuguese Phrase
O depósito costuma ser um mês de aluguel.
Meaning
The sentence states that, as a rule, the security deposit required for a rental property equals the amount of one month's rent. It implies that this is the usual practice, though exceptions may exist.
When to use
Use this phrase when you are discussing rental agreements, explaining the typical cost of a deposit to a prospective tenant, or comparing rental conditions in different cities or countries.
✦Grammar Breakdown
Odepósitocostumaserummêsdealuguel
Costumar + infinitivo
The verb *costumar* is used with an infinitive to express what usually happens. It conjugates like a regular -ar verb (costumo, costumas, costuma, etc.).
Ser infinitivo
After *costuma*, the infinitive *ser* keeps its base form; it does not change to *é* because we are describing a habitual situation, not a permanent fact.
Measure phrase – um mês de aluguel
The construction *um + noun + de + noun* works like ‘one X of Y’, indicating a quantity that is measured in terms of another concept (here, a month measured in rent).
Definite article with depósito
In Portuguese, the word *depósito* (deposit) normally takes the definite article *o* when you refer to a specific deposit.
🗨In Conversation
Qual é o valor do depósito?
What is the amount of the deposit?
O depósito costuma ser um mês de aluguel.
The deposit is usually one month’s rent.
✕Common Mistakes
O depósito é um mês de aluguel.
Using *é* makes the statement absolute, losing the nuance that it’s the usual practice, not a rule.
O depósito costuma ser um mês de aluguéis.
The plural *aluguéis* is incorrect here; the phrase measures a single month of rent, so *aluguel* stays singular.
O depósito costuma ser um mês aluguel.
Missing the preposition *de* breaks the measure construction.
↔Alternatives
O depósito geralmente equivale a um mês de aluguel.
The deposit usually equals one month’s rent.
Normalmente, o depósito corresponde a um mês de aluguel.
Normally, the deposit corresponds to one month’s rent.
Em geral, o depósito é de um mês de aluguel.
In general, the deposit is one month’s rent.
Cultural Tip
In Brazil, most residential leases require a security deposit (known as *depósito caução*) equal to one month’s rent, but some landlords ask for two months, especially in high‑demand cities like São Paulo or Rio de Janeiro. The deposit is usually returned at the end of the contract if the property is left in good condition, but it can be used to cover unpaid rent or damages.