Compare o parcelamento com os juros rotativos.

Compare is the imperative form, used to give an instruction or prompt, like Compare... in English.

In Brazilian Portuguese, this form matches the você command:

• Compare o parcelamento com os juros rotativos. = Compare the installment plan with revolving interest.

It can sound like:

• a direct instruction
• a suggestion
• a button, ad, or website prompt

Grammatically, compare is also the same form as the present subjunctive for você/ele/ela, but in this sentence it is clearly being used as a command.

O is the definite article the.

Portuguese uses definite articles more often than English does, especially with abstract or general nouns. So o parcelamento is very natural, even if English might sometimes just say installment payment or installment plan without the.

Here, o parcelamento means something like:

• the installment option
• the installment plan
• paying in installments

Parcelamento is a noun related to paying for something in installments.

It comes from the verb parcelar, meaning to split into installments.

Depending on context, parcelamento can mean:

• an installment plan
• payment by installments
• the act of dividing a payment into parts

In financial or shopping contexts in Brazil, this is a very common word.

Because the usual structure is:

• comparar A com B = to compare A with B

So:

• Compare o parcelamento com os juros rotativos.

This is the normal preposition in Portuguese for this meaning. English can use either compare X with Y or compare X to Y, but Portuguese most commonly uses com in this kind of sentence.

In Portuguese, juros is the normal word for interest in the financial sense.

Examples:

• pagar juros = to pay interest
• taxa de juros = interest rate

Although juro exists in Portuguese, in finance the concept is very often expressed in the plural as juros.

So juros rotativos is the natural way to say revolving interest or revolving credit interest/charges.

Because rotativos is an adjective describing juros, and adjectives in Portuguese usually agree with the noun in gender and number.

Here:

• juros = masculine plural
• so the adjective must also be masculine plural: rotativos

Agreement:

• juro rotativo = singular
• juros rotativos = plural

In Brazilian financial language, juros rotativos usually refers to the interest charged in crédito rotativo, especially on a credit card when the full bill is not paid.

So it is not just any interest. It refers to a specific kind of often high interest connected to revolving credit.

That is why the sentence sounds financial and practical, like advice on how to choose a cheaper payment option.

Yes. Portuguese often leaves the subject unstated when it is obvious from the verb form or context.

Here, the implied subject is você:

• (Você) compare o parcelamento com os juros rotativos.

In English, imperatives also usually omit the subject:

• Compare the installment plan with revolving interest.

So this omission is very natural in both languages.

It is fairly neutral and common in Brazilian Portuguese.

Because it uses the você command form, it fits many everyday contexts:

• websites
• apps
• ads
• financial advice
• customer service language

It does not sound especially intimate, but it also is not stiffly formal. It is the kind of practical instruction you see in Brazil all the time.

Yes. You could also say:

• Compare os juros rotativos com o parcelamento.

The core meaning stays the same: you are comparing one thing with the other.

However, the original version may put the focus first on o parcelamento, perhaps because that is the option the speaker wants the reader to consider first.

A few common non-command versions would be:

• Você compara o parcelamento com os juros rotativos.
  = You compare the installment plan with revolving interest.

• É importante comparar o parcelamento com os juros rotativos.
  = It is important to compare the installment plan with revolving interest.

• Comparei o parcelamento com os juros rotativos.
  = I compared the installment plan with revolving interest.

So the sentence you were given is specifically the instructional version.