Сумма к возврату зависит от камеральной проверки.

Literally, сумма к возврату is something like the amount for return or the amount to be returned.

In real usage, especially in tax, banking, and other official contexts, it means:

the amount to be refunded or the refund amount

Here, сумма means amount/sum, and к возврату describes that amount as one that is supposed to be returned to someone.

So this is not just возврат (return/refund) by itself. It is specifically the amount connected with that refund.

Because it comes after the preposition к, which normally requires the dative case.

• возврат = nominative
• к возврату = dative after к

In bureaucratic or formal Russian, к + noun can mean something like:

• meant for
• intended for
• due for

So к возврату means for refund / to be refunded.

This is a very common official-style pattern, similar to:

• готов к отправке = ready for shipment
• документы к подписанию = documents for signing

Because зависеть is a verb that normally goes with от + genitive.

So:

• зависеть от чего? = to depend on what?

That is the standard pattern you need to learn with this verb.

Examples:

• Это зависит от времени. = It depends on the time.
• Результат зависит от опыта. = The result depends on experience.
• Сумма к возврату зависит от камеральной проверки. = The refund amount depends on the desk audit.

For an English speaker, this is similar to learning that some verbs come with fixed prepositions.

It is genitive singular.

That happens because от requires the genitive case.

Base form:

• камеральная проверка = nominative singular

After от:

• от камеральной проверки = genitive singular

You can see both words change:

• камеральная → камеральной
• проверка → проверки

So the structure is:

• зависит от
  • genitive

Камеральная проверка is a formal tax/legal term. It usually means an office-based review or desk audit, especially by the tax authorities.

It refers to a check done using submitted documents and records, rather than an on-site inspection.

So this is not everyday vocabulary. It belongs to official, financial, and tax-related language.

A learner should recognize that камеральный is a specialized adjective here, not something very common in ordinary conversation.

Because the subject is сумма (amount), which is singular.

• сумма = singular noun
• therefore зависит = singular verb form

Russian present-tense verbs agree with the subject in number:

• сумма зависит = the amount depends
• суммы зависят = the amounts depend

So if you changed the subject to plural, the verb would also change:

• Суммы к возврату зависят от камеральной проверки.

It is definitely formal/official Russian.

A native speaker would expect this kind of sentence in places like:

• tax forms
• bank statements
• government websites
• legal or accounting documents

The clues are:

• сумма к возврату — bureaucratic wording
• камеральная проверка — specialized official term

In everyday conversation, people might say something less formal, depending on context, such as:

• Сколько вам вернут, зависит от проверки.
• Размер возврата зависит от проверки.

But in official documents, the original sentence sounds perfectly normal.

Yes, Russian word order is flexible, but the neutral version here is:

Сумма к возврату зависит от камеральной проверки.

This is the most straightforward order: subject → verb → prepositional phrase

You could also say:

От камеральной проверки зависит сумма к возврату.

That version puts more emphasis on от камеральной проверки.

So both are grammatically correct, but the original sentence is the most neutral and document-like.

Because Russian has no articles.

English needs words like:

• the
• a/an

Russian does not. So сумма can mean:

• the amount
• an amount

and камеральная проверка can mean:

• the desk audit
• a desk audit

You understand which one is meant from context.

In this sentence, English will usually translate it with the:

The refund amount depends on the desk audit.

But Russian itself does not mark that explicitly.

A helpful stress pattern is:

Су́мма к возвра́ту зави́сит от камера́льной прове́рки.

Word by word:

• су́мма
• возвра́ту
• зави́сит
• камера́льной
• прове́рки

This is useful because stress in Russian is unpredictable and can move from one form to another. For example:

• прове́рка
• прове́рки

The stress stays on ве́р, but in many other words it does shift, so it is good to learn stressed forms early.

Yes, depending on style.

Possible alternatives include:

• сумма возврата = the refund amount
• сумма, подлежащая возврату = the amount subject to refund / the amount to be refunded
• сумма, которую вернут = the amount that will be returned

But these are not identical in style:

• сумма к возврату sounds compact and official
• сумма возврата is also formal, but slightly different in structure
• сумма, подлежащая возврату is even more legalistic
• сумма, которую вернут is more conversational and explanatory

So the original phrasing is a typical concise official formula.