Osiguravač će platiti naknadu štete pod uslovom da polisa osiguranja važi.

Će platiti is the future tense in Serbian, often called Future I.

It is formed with:

• the clitic će = will
• the infinitive platiti = to pay

So:

• osiguravač će platiti = the insurer will pay

A very common pattern is:

• Ja ću platiti = I will pay
• On će platiti = He will pay
• Osiguravač će platiti = The insurer will pay

In Serbian, this future construction is extremely common and works much like English will + verb.

This is about verb aspect, which is very important in Serbian.

• platiti is perfective: to pay, as a completed act
• plaćati is imperfective: to be paying / to pay repeatedly / to pay in general

In this sentence, the idea is that the insurer will make one completed payment of compensation, so platiti is the natural choice.

Compare:

• Osiguravač će platiti naknadu. = The insurer will pay the compensation.
• Osiguravač će plaćati naknadu svakog meseca. = The insurer will pay compensation every month.

So platiti fits because this is a single, completed legal action.

Osiguravač is in the nominative singular because it is the subject of the sentence.

It answers the question:

• Who will pay?
• Osiguravač = the insurer

This is the basic dictionary form of the noun:

• osiguravač = insurer

Because naknadu is the direct object of platiti, so it must be in the accusative singular.

• nominative: naknada = compensation
• accusative: naknadu

So:

• platiti naknadu = to pay compensation

The second word, štete, stays in the genitive singular, because it depends on naknada:

• naknada štete = compensation for damage / damage compensation

So the structure is:

• platiti
  • naknadu = pay compensation
• compensation of what? → štete

Štete is genitive singular of šteta.

Here it depends on the noun naknada:

• naknada štete literally means compensation of damage

Serbian often uses a noun + genitive structure where English might use:

• for
• of
• a compound noun

So:

• naknada štete = compensation for damage
• polisa osiguranja = insurance policy
• ugovor o radu = employment contract

This is a very common pattern in formal Serbian.

Pod uslovom da means provided that, on condition that, or as long as in a formal/legal sense.

It is more formal and more precise than ako.

Compare:

• pod uslovom da polisa osiguranja važi = provided that the insurance policy is valid
• ako polisa osiguranja važi = if the insurance policy is valid

Both can be correct, but:

• ako is more general and everyday
• pod uslovom da sounds more legal, contractual, or administrative

So in an insurance sentence, pod uslovom da is very natural.

Važi is the present tense, 3rd person singular, of važiti = to be valid / to apply.

In Serbian, after expressions like pod uslovom da, the present tense is often used to express a condition that must be true.

So:

• pod uslovom da polisa osiguranja važi = provided that the policy is valid

Using će važiti would shift the meaning toward a future state:

• provided that the policy will be valid

That is possible in some contexts, but the original sentence is talking about the policy’s validity as a condition, so the present tense sounds more natural.

Yes, both are possible.

Serbian commonly uses the verb važiti for documents, tickets, laws, permits, contracts, and policies:

• Karta važi do petka. = The ticket is valid until Friday.
• Polisa važi godinu dana. = The policy is valid for one year.

You can also use the adjective važeći / važeća / važeće:

• Polisa je važeća. = The policy is valid.

So these are both natural:

• pod uslovom da polisa osiguranja važi
• pod uslovom da je polisa osiguranja važeća

The version with važi is very idiomatic and common.

In this sentence, polisa osiguranja is the subject of the subordinate clause, so polisa is in the nominative singular.

• polisa = policy
• osiguranja = of insurance

So:

• polisa osiguranja = insurance policy

Inside that phrase:

• polisa is nominative singular
• osiguranja is genitive singular, depending on polisa

Then the whole clause is:

• polisa osiguranja važi = the insurance policy is valid

Osiguranja is the genitive singular of osiguranje, which means insurance.

So:

• osiguranje = insurance
• polisa osiguranja = policy of insurance = insurance policy

This is another example of the very common Serbian noun + genitive structure.

Compare:

• broj telefona = phone number
• cena usluge = price of the service
• polisa osiguranja = insurance policy

Yes. Serbian word order is more flexible than English, although some orders sound more natural in formal writing.

The original sentence:

• Osiguravač će platiti naknadu štete pod uslovom da polisa osiguranja važi.

A very natural alternative is:

• Pod uslovom da polisa osiguranja važi, osiguravač će platiti naknadu štete.

This puts the condition first, which is also common in legal style.

One thing to remember is that će is a clitic, so it usually appears near the beginning of its clause, often in the second position:

• Osiguravač će platiti...
• Ako polisa važi, osiguravač će platiti...

So word order can move, but clitics still follow Serbian placement rules.

Because Serbian has no articles like English a/an/the.

So:

• osiguravač can mean an insurer or the insurer
• polisa osiguranja can mean an insurance policy or the insurance policy

Which meaning is intended depends on context.

In a sentence like this, especially in legal or contract language, English would often translate it with the:

• The insurer will pay compensation provided that the insurance policy is valid.

But Serbian does not need a separate word for that.

It is definitely formal and sounds like something from:

• an insurance contract
• terms and conditions
• legal or administrative writing

That formality comes from expressions like:

• osiguravač
• naknada štete
• pod uslovom da
• polisa osiguranja važi

In everyday speech, a person might say something simpler, for example:

• Platiće štetu ako polisa važi.
• Osiguranje će platiti ako je polisa važeća.

So the original sentence is perfectly correct, but it belongs more to formal written Serbian than casual conversation.