Transmita e retifique a declaração do Imposto de Renda.

Because this sentence uses the imperative, the form used for giving instructions or commands.

• transmitir = to submit / to transmit
• retificar = to correct / amend / rectify

In an instruction, Portuguese changes the verb form:

• Transmita = Submit
• Retifique = Amend / Correct

So this is like an official instruction telling someone what to do.

Transmita is the command form associated with você in standard Brazilian Portuguese.

For many verbs, commands for você use the same form as the present subjunctive:

• que você transmita
• que você retifique

That is why the instruction says:

• Transmita
• Retifique

and not transmite.

A native English speaker often expects something more directly tied to the infinitive, but Portuguese imperative forms depend on the subject being implied.

The implied subject is você.

So the full idea is:

• (Você) transmita e retifique a declaração do Imposto de Renda.

Portuguese often omits subject pronouns when they are understood from the verb form. In official instructions, leaving out você is very normal.

In everyday Portuguese, transmitir can mean to transmit, to send, or to broadcast.

In the tax context in Brazil, transmitir a declaração is the standard way to say to submit/file the tax return electronically. It is a very common bureaucratic term.

So here, transmita a declaração means something like:

• submit the tax return
• file the tax return

Retificar is a formal verb meaning to correct, to amend, or to rectify.

In tax language, retificar a declaração usually means to file a corrected version of a return that was already submitted.

So this is not just casual correction; it often refers to an official amendment.

Yes. Retificar is more formal and more common in legal, administrative, and tax language.

Compare:

• corrigir um erro = correct a mistake
• retificar uma declaração = amend/correct an official filing

In ordinary speech, people may say corrigir, but in government or tax contexts, retificar is the more precise word.

It refers to the income tax return.

Word by word:

• declaração = declaration / statement / return
• Imposto de Renda = income tax

In Brazil, declaração do Imposto de Renda is the standard expression for the tax return that a person submits to the tax authorities.

So even though declaração literally looks like declaration, the natural English equivalent here is usually income tax return.

Do is the contraction of:

• de + o = do

So:

• declaração do Imposto de Renda literally means
• declaration of the income tax

This kind of contraction is extremely common in Portuguese:

• de + a = da
• de + o = do
• em + a = na
• em + o = no

Portuguese uses definite articles more often than English.

Here, a declaração means the return or the declaration. In official instructions, the article helps identify the specific document being discussed.

Portuguese often sounds more natural with the article in cases where English might omit it.

Because it is being treated as the name of a specific official tax category, much like a formal label.

In Brazilian administrative writing, capitalization is common in expressions like:

• Imposto de Renda
• Receita Federal

In less formal writing, you may also see imposto de renda in lowercase. But capitalizing it is very common in official and bureaucratic contexts.

Grammatically, yes, e means and.

However, in a real bureaucratic or software context, the sentence may function as a broad instruction covering both possible actions related to the tax return. Depending on context, it may mean:

• submit it and, if necessary, amend it
• submit and amend the return through this system
• perform these tax-return actions

So the exact interpretation can depend on where the sentence appears, but e itself simply means and.

Yes, very formal.

Several things make it sound formal and administrative:

• the imperative instruction style
• the verb retificar
• the tax-related phrase declaração do Imposto de Renda

This sounds like something from a government website, official notice, or tax software interface, not casual conversation.

Not usually in exactly this form, unless they are talking in an official or tax-filing context.

In everyday speech, a Brazilian might say something more conversational, such as:

• Envie a declaração do Imposto de Renda.
• Corrija a declaração, se precisar.

But in official instructions, transmita and retifique are very natural.

Yes. Declaração is a broad word meaning declaration, statement, or document stating something.

For example:

• declaração de amor = declaration of love
• declaração de residência = proof/statement of residence
• declaração de imposto = tax declaration

In this sentence, the surrounding phrase do Imposto de Renda makes it specifically about a tax return.

Portuguese often leaves the object as a full noun phrase instead of replacing it with a pronoun, especially in formal writing.

So:

• Transmita a declaração = Submit the return

is more straightforward and clearer than:

• Transmita-a

The full noun phrase is especially common in instructions, legal writing, and bureaucracy, where clarity matters.

Yes, that is a very natural English rendering, especially in a tax context.

A few good translations are:

• Submit and amend your income tax return.
• File and amend your income tax return.
• Submit and correct your income tax return.

The best choice depends on context, but file and amend often sound most natural in tax-related English.