Претензию проверят вне зависимости от тарифной ставки.

Because it is the direct object of проверят (will check / will review).

The dictionary form is претензия. In the singular, a feminine noun ending in -ия changes like this:

• nominative: претензия
• accusative: претензию

So Претензию проверят literally means They will check the claim/complaint.

Проверят is the 3rd person plural future form of проверить.

It means they will check. In Russian, this form is often used when the doer is unspecified or not important. English often translates this with a passive:

• Претензию проверят = The claim will be checked

So even though the Russian verb is literally they will check, the natural English meaning is often passive.

Compare:

• Они проверят претензию = They will check the claim
• Претензию проверят = The claim will be checked / They’ll check the claim

Russian often omits the subject when it is obvious, unknown, or unimportant.

Here, the focus is on what will happen to the claim, not on who will do it. That is very natural in Russian.

So this structure is common in official or service-related language:

• Заявку рассмотрят = The application will be reviewed
• Документы проверят = The documents will be checked

This is one reason Russian can sound more impersonal or bureaucratic in formal contexts.

Вне зависимости от is a fixed expression meaning regardless of or independently of.

It is made of:

• вне = outside
• зависимости = dependence (in the required case form)
• от = from

Literally, it is something like outside dependence on.

You should learn it as a set phrase, because that is how it is normally used:

• вне зависимости от чего-либо = regardless of something

Because the preposition от requires the genitive case.

The dictionary form is:

• тарифная ставка

After от, both words go into the genitive singular:

• тарифной ставки

So:

• вне зависимости от тарифной ставки = regardless of the tariff rate

This is a good pattern to remember:

• от + genitive

Because тарифной is an adjective modifying the noun ставки, and in Russian adjectives must agree with the noun they describe.

The base form is:

• тарифная ставка

Here:

• ставка is feminine singular
• after от, it becomes genitive singular → ставки
• the adjective must match it → тарифной

So both change together:

• nominative: тарифная ставка
• genitive: тарифной ставки

Проверят comes from проверить, which is perfective.

Russian uses the perfective future when talking about a single completed action in the future. Here the idea is that the claim will be checked/reviewed as a completed event.

Compare:

• проверить → perfective → проверят = they will check
• проверять → imperfective → future would need будут проверять = they will be checking / will check repeatedly or as a process

In this sentence, the perfective fits because it refers to one future result: the claim will get checked.

Yes. Russian can also use a passive construction, for example:

• Претензия будет проверена вне зависимости от тарифной ставки.

This is more explicitly passive: The claim will be checked.

The original sentence with проверят is also very natural, and often sounds simpler or more standard in everyday official language. Russian frequently prefers this indefinite-personal construction instead of a true passive.

Russian word order is flexible, and the first position often shows the topic or what the sentence is mainly about.

Starting with Претензию puts focus on the claim itself:

• Претензию проверят... = As for the claim, it will be checked...

If you changed the order, the emphasis could shift slightly:

• Вне зависимости от тарифной ставки претензию проверят.

This version puts more emphasis first on regardless of the tariff rate.

Both are grammatical, but the original order is very natural in formal service language.

Not always. Претензия can mean several related things depending on context, such as:

• complaint
• claim
• formal complaint
• demand
• in some contexts, even grievance

In customer service, legal, business, or banking contexts, it often means a formal complaint or claim submitted for review.

So the exact English translation depends on the situation, even though the grammar of the sentence stays the same.

It sounds fairly formal or administrative, the kind of wording you might see in:

• customer support
• banking
• insurance
• legal or business communication
• official notices

The formality comes from things like:

• претензия instead of a more casual word
• вне зависимости от instead of a simpler phrase
• the impersonal проверят construction

So it is perfectly natural Russian, but it belongs more to official/service language than casual conversation.