Osiguranik će platiti premiju osiguranja.

Because osiguranik is the subject of the sentence, so it is in the nominative singular.

• Base form: osiguranik
• Gender: masculine
• Number: singular
• Case: nominative

In this sentence, it means the person who is insured, or in some contexts the insured party.

This is the normal way to form the future tense in Serbian.

The future is made with:

• a form of hteti as an auxiliary
• plus the infinitive of the main verb

Here:

• će = the 3rd person future auxiliary
• platiti = infinitive, to pay

So će platiti means will pay.

A useful pattern:

• ja ću platiti = I will pay
• ti ćeš platiti = you will pay
• on/ona/ono će platiti = he/she/it will pay
• oni/one/ona će platiti = they will pay

Notice that će is used for both he/she/it and they, so the subject tells you who is meant.

Because premiju is the direct object, and Serbian changes noun endings depending on case.

The dictionary form is:

• premija = premium

But after the verb platiti when it means pay something, the thing being paid is the direct object, so it goes into the accusative singular:

• nominative: premija
• accusative: premiju

So:

• platiti premiju = to pay the premium

Because Serbian often uses the genitive to express relationships that English often shows with of or with a noun used like an adjective.

Here:

• osiguranje = insurance
• osiguranja = genitive singular of osiguranje

So:

• premija osiguranja = literally premium of insurance
• natural English: insurance premium

This is a very common pattern in Serbian:

• cena proizvoda = price of the product / product price
• ugovor o radu is another structure, but with a preposition
• broj telefona = telephone number

Here it is singular.

The base noun is:

• osiguranje = insurance

Its genitive singular is:

• osiguranja

So in this sentence, osiguranja means of insurance, not insurances.

This can be confusing because some Serbian endings look the same across different forms, so you often have to rely on context.

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

• platiti = perfective
• plaćati = imperfective

Platiti focuses on the action as a completed whole: the premium will be paid.

Plaćati would suggest repeated, ongoing, habitual, or process-like paying.

So in a sentence like this, especially in formal or legal language, platiti is very natural because it refers to completing the payment obligation.

Compare:

• Osiguranik će platiti premiju. = The insured will pay the premium.
  One completed payment / fulfillment.
• Osiguranik će plaćati premiju svakog meseca. = The insured will pay the premium every month.
  Repeated action.

Because će is a clitic, and clitics in Serbian usually go in the second position in the sentence or clause.

So in:

• Osiguranik će platiti premiju osiguranja.

the first element is Osiguranik, and će comes right after it.

This is a very common Serbian rule. You will also see it with other short unstressed words, such as:

• sam
• je
• se
• ga
• mu

For example:

• Marko će doći.
• Premiju će platiti osiguranik.

In the second example, the word order changes for emphasis, but će still stays in second position.

Yes. Serbian word order is more flexible than English word order, because case endings show the grammatical roles.

The most neutral version here is:

• Osiguranik će platiti premiju osiguranja.

But you could also say:

• Premiju osiguranja će platiti osiguranik.
• Osiguranik premiju osiguranja će platiti.

These alternatives change the focus or emphasis, not the core meaning.

Still, in formal neutral style, the original order is the most natural.

Yes. Serbian does not have articles like English a and the.

So osiguranik can mean:

• an insured person
• the insured person
• the insured party

And premiju osiguranja can mean:

• an insurance premium
• the insurance premium

Which one is intended depends on context. In legal or contractual language, a noun without an article often corresponds to the in English translation.

The letter ć is pronounced differently from č.

• ć is a softer sound
• č is a harder sound

In će, the ć is soft, and the word is roughly like tye or tcheh with a softer beginning than English ch. There is no perfect English equivalent, but the important thing is not to pronounce it like a hard č.

So:

• će is not the same as če

This distinction matters in Serbian pronunciation and spelling.