Organizo as despesas a fim de que ele calcule o imposto.

Organizo is the first-person singular present indicative form of organizar.

So:

• organizar = to organize
• organizo = I organize / I am organizing / sometimes I do organize, depending on context

Portuguese often uses the simple present where English might use either I organize or I’m organizing.

Because Portuguese often drops subject pronouns when the verb form already makes the subject clear.

• Organizo already tells you the subject is I
• So eu is optional

You could say:

• Eu organizo as despesas...

But it is usually unnecessary unless you want:

• emphasis
• contrast
• clarity

For example:

• Eu organizo as despesas, e ele calcula o imposto.
  = I organize the expenses, and he calculates the tax.

As despesas means the expenses.

Breakdown:

• despesa = expense
• despesas = expenses
• as = the (feminine plural)

Portuguese articles must agree in gender and number with the noun:

• o = masculine singular
• a = feminine singular
• os = masculine plural
• as = feminine plural

Since despesas is feminine plural, it takes as.

A fim de que means so that, in order that, or for the purpose that.

It introduces a purpose clause.

So:

• Organizo as despesas a fim de que ele calcule o imposto.
  = I organize the expenses so that he can calculate the tax.

This expression is a bit formal and more common in writing or careful speech.

A more everyday version is often:

• ...para que ele calcule o imposto.

Because the fixed expression is a fim de que.

Think of it as one whole connector meaning so that / in order that.

Important note:

• a fim de que = so that, in order that
• a fim de + infinitive = in order to

Examples:

• Estudo a fim de passar.
  = I study in order to pass.

• Estudo a fim de que meus pais fiquem felizes.
  = I study so that my parents will be happy.

Also, don’t confuse a fim de with afim:

• a fim de = for the purpose of
• afim = related, similar

Because a fim de que normally requires the subjunctive.

So after a fim de que, the verb in the subordinate clause usually goes in the present subjunctive when the main clause is in the present.

• ele calcula = he calculates / he is calculating
  → present indicative
• ele calcule = that he calculate / so that he may calculate
  → present subjunctive

In this sentence, the speaker is expressing purpose, not stating a plain fact. That is why Portuguese uses the subjunctive.

They are:

1. Organizo

   • present indicative
   • main clause
   • states what the speaker does

2. calcule

   • present subjunctive
   • subordinate clause after a fim de que
   • expresses intended result or purpose

So the structure is:

• main action in the present
• purpose clause in the present subjunctive

Here ele is usually included because the subjunctive form calcule could refer to different persons depending on context, and the sentence needs to show clearly who is supposed to calculate the tax.

• ...a fim de que ele calcule o imposto
  = so that he calculates the tax

If you removed ele, the meaning could become less clear unless context already made the subject obvious.

Also, Portuguese often keeps the subject pronoun in subordinate clauses when there is a change of subject:

• I organize the expenses
• he calculates the tax

That subject change makes ele useful and natural.

O imposto means the tax.

Breakdown:

• imposto = tax
• o = the (masculine singular)

Portuguese uses definite articles more often than English does. In many contexts, Portuguese prefers:

• calcular o imposto

where English might say either:

• calculate the tax
• calculate tax
• calculate the taxes

The article helps make the noun sound complete and natural in Portuguese.

Yes, it is grammatical and natural, but it sounds somewhat formal because of a fim de que.

In everyday Brazilian Portuguese, a more common version would be:

• Organizo as despesas para que ele calcule o imposto.

This has the same basic meaning but sounds more conversational.

Very roughly:

• a fim de que = more formal, more written
• para que = more common in normal speech

Yes, in many contexts that is possible, but the structure changes slightly.

Compare:

• Organizo as despesas para que ele calcule o imposto.
• Organizo as despesas para ele calcular o imposto.

Both can mean I organize the expenses so that he can calculate the tax.

The first uses:

• para que + subjunctive

The second uses:

• para + subject + infinitive

In Brazilian Portuguese, para ele calcular is very common and natural in speech.

However, the original sentence uses a fim de que, which specifically calls for the finite verb calcule in the subjunctive.

Yes, but when the subject is the same, Portuguese often prefers a fim de + infinitive instead.

For example:

• Organizo as despesas a fim de reduzir erros.
  = I organize the expenses in order to reduce errors.

Here the subject of both actions is still I, so the infinitive is very natural.

When the subject changes, a clause with a fim de que + subjunctive is often clearer:

• Organizo as despesas a fim de que ele calcule o imposto.

Now:

• I organize
• he calculates

So the full clause helps show the change of subject.

A simple approximate pronunciation is:

or-ga-NEE-zoo az des-PE-zas a feeng djee kee EH-lee kaw-KOO-lee oo im-POHS-too

A few helpful notes:

• organizo → the z sounds like z in zoo
• as despesas → in connected speech, as may sound like az
• de que in Brazilian Portuguese often sounds close to djee kee
• ele = EH-lee
• calcule = stress on cal
• imposto = stress on pos

Pronunciation varies by region, but this is a useful Brazilian approximation.

The pattern is:

[main clause] + [expression of purpose] + [subordinate clause in the subjunctive]

Here:

• Organizo as despesas
  = main clause

• a fim de que
  = purpose connector

• ele calcule o imposto
  = subordinate purpose clause, with subjunctive verb

So the sentence follows this model:

• I do X so that he may do Y

This is a very useful pattern in Portuguese for expressing purpose.