Indichiamo l'aliquota in modo che il committente possa controllarla.

Indichiamo is the 1st person plural present of indicare.

So it means we indicate, we specify, we state, or we list, depending on context.

In this sentence, specify or state is often the most natural idea. It suggests that we are giving the tax rate / percentage so that someone else can check it.

This is a spelling rule in Italian.

The verb is indicare. In verbs ending in -care and -gare, Italian adds h before e or i to keep the hard sound of c or g.

• indicare → indico
• indicare → indichi
• indicare → indichiamo

Without the h, ci would sound like the ch in church, which is not the sound this verb needs here.

So indichiamo keeps the hard k sound: in-di-KYA-mo.

Aliquota is a technical word, often used in financial, tax, accounting, or contract language.

It usually means a rate, especially a tax rate or percentage rate.

So depending on context, it might refer to:

• a VAT rate
• a tax percentage
• another officially applied rate

It is not a very everyday word in casual conversation; it sounds more administrative or professional.

Because aliquota is a feminine singular noun beginning with a vowel.

In Italian, la becomes l' before a vowel:

• la aliquota → l'aliquota

This is called elision.

Other examples:

• l'acqua
• l'idea
• l'azienda

So l'aliquota is simply the normal form.

In modo che means so that, in such a way that, or so that it is possible for...

In this sentence, it introduces a purpose: we specify the rate so that the client can check it.

This expression is very common in Italian when you want to explain the goal or intended result of an action.

Similar expressions include:

• affinché — more formal
• così che — also possible in some contexts
• perché — sometimes used to mean so that, but not always interchangeable in tone or structure

Because after in modo che, Italian normally uses the subjunctive when expressing purpose.

So:

• possa = present subjunctive
• può = present indicative

Here the idea is not just a plain fact. It is the intended purpose of the first action:

• We specify the rate so that the client can check it.

That is why Italian uses:

• in modo che il committente possa controllarla

and not normally:

• in modo che il committente può controllarla

The second version sounds ungrammatical in standard Italian.

Possa is the 3rd person singular present subjunctive of potere.

The subjunctive forms of potere in the present are:

• che io possa
• che tu possa
• che lui/lei possa
• che noi possiamo
• che voi possiate
• che loro possano

In this sentence, the subject is il committente, which is 3rd person singular, so possa is the correct form.

Committente is a business/legal word meaning something like:

• client
• customer
• principal
• the party placing the order / commission

The exact English equivalent depends on context.

As for gender:

• il committente = masculine
• la committente = feminine

This noun ends in -e, so the article helps show the gender.

In many professional contexts, it refers to the person or company that commissions work or requests a service.

Controllarla breaks down as:

• controllare = to check / verify
• la = it

So controllarla means to check it.

The la refers back to l'aliquota, which is feminine singular. That is why the pronoun is la.

In Italian, object pronouns can attach to an infinitive:

• controllarla = check it
• vederlo = see him/it
• farlo = do it

Since potere is followed by an infinitive, Italian commonly puts the pronoun onto that infinitive:

• possa controllarla

You may also encounter:

• la possa controllare

But possa controllarla is the more neutral and common order here.

Not usually. This is a very important false-friend point.

In Italian, controllare often means:

• to check
• to verify
• to inspect

Only sometimes does it mean to control in the English sense.

So in this sentence, controllarla means to check it / verify it, not to control it.

If you translate it mechanically as control it, the sentence may sound strange in English.

Yes. A few alternatives are possible, depending on style.

For example:

• Indichiamo l'aliquota affinché il committente possa controllarla.
• Indichiamo l'aliquota così che il committente possa controllarla.

Notes:

• affinché is generally more formal and quite elegant.
• in modo che is clear, standard, and very common in professional writing.
• All of these still normally require the subjunctive in this kind of purpose clause.

So the original sentence is perfectly natural, especially in formal or administrative Italian.