Заява на повернення готова.

Because it agrees with заява, which is a feminine noun.

In Ukrainian, adjectives usually match the noun in:

• gender
• number
• case

Here:

• заява = feminine singular
• so the adjective must also be feminine singular: готова

Compare:

• документ готовий = The document is ready
• заява готова = The application/request is ready
• питання готове = The question/matter is ready

In Ukrainian, the verb to be is usually omitted in the present tense.

So:

• Заява на повернення готова literally looks like Application for return ready
• but it means The return application is ready

This is completely normal Ukrainian.

If you want a past or future tense, then forms of бути appear:

• Заява була готова = The application was ready
• Заява буде готова = The application will be ready

It is in the accusative after на, but in this particular word the accusative looks the same as the nominative.

Why?

• повернення is a neuter inanimate noun
• for many neuter inanimate nouns, nominative and accusative singular are identical

So:

• nominative: повернення
• accusative: повернення

That is why you do not see a form change.

Because заява на ... is a very common pattern meaning an application/request for ...

So:

• заява на повернення = application/request for a return
• заява на відпустку = leave application
• заява на вступ = application for admission

This use of на is idiomatic. It often expresses the purpose or target of the application.

Sometimes про is possible in Ukrainian with заява, but it does not always sound the same.

• заява на повернення usually means a formal request/application for a return or refund
• заява про повернення sounds more like a statement/request concerning the return

In many administrative contexts, на is the more natural choice for application for.

So for this sentence, на повернення is the expected phrasing.

Повернення is a verbal noun, meaning returning or return.

It comes from the verb family:

• повертати / повернути = to return, to give back, to bring back

As a noun, повернення can mean:

• the act of returning something
• a return process
• in business context, a return/refund situation

So in заява на повернення, it functions like English return in return request or application for a return.

Not always. Заява is a flexible word.

Depending on context, it can mean:

• application
• request
• statement
• declaration

In bureaucratic or office language, заява often means a formal written request or application.

So in this sentence, application or request is usually the best choice.

Yes, it sounds fairly formal or administrative.

Words like:

• заява
• повернення
• готова

fit very naturally in office, store, bank, university, or paperwork contexts.

In everyday speech, people might say something less formal depending on the situation, but this sentence itself sounds normal for official communication.

Yes. Ukrainian word order is flexible, though different orders can change emphasis.

The neutral version here is:

• Заява на повернення готова.

Other possible orders:

• Готова заява на повернення. = puts more emphasis on ready
• На повернення заява готова. = possible, but less natural without context

So the given order is the most straightforward and natural in many situations.

Because it is describing the state of the noun in the sentence.

In Заява на повернення готова, готова means ready and works as the predicate:

• The application is ready

This is a very common structure in Ukrainian:

• Кава готова. = The coffee is ready
• Вечеря готова. = Dinner is ready
• Робота готова. = The work is ready

So готова is simply the adjective agreeing with заява and functioning as the main predicate.

The stress is:

• зая́ва
• пове́рнення
• гото́ва

So the sentence is pronounced roughly as:

• zaya-va na po-VER-nennya ho-TO-va

Knowing the stress is useful because Ukrainian stress is not always predictable and can affect natural pronunciation.

Yes, very often.

In real-life usage, повернення can refer to:

• returning an item
• a goods return
• a refund process, depending on context

So заява на повернення may be used where English would say:

• return application
• return request
• refund request

The exact English choice depends on the situation, but the Ukrainian structure stays the same.

Ukrainian does not use articles.

So Заява на повернення готова could mean:

• The return application is ready
• A return application is ready

English needs an article, but Ukrainian does not. The exact interpretation comes from context.