Страховое возмещение уже выплачено.

• страховое = insurance-related / of insurance
• возмещение = compensation, reimbursement, indemnity
• уже = already
• выплачено = has been paid out / paid

So the sentence is built very literally as something like:

insurance compensation already paid-out

In natural English: The insurance compensation has already been paid out.

Because страховое agrees with возмещение.

The noun возмещение is:

• neuter
• singular
• nominative

So the adjective must match it:

• masculine: страховой
• feminine: страховая
• neuter: страховое

That is why we get страховое возмещение.

It is in the nominative case.

Here, возмещение is the grammatical subject of the sentence, and страховое matches it.

This sentence is structurally similar to:

• Письмо отправлено = The letter has been sent
• Деньги переведены = The money has been transferred

So страховое возмещение is the thing that has already undergone the action.

Выплачено is a short passive participle. In this kind of sentence, Russian often uses a short passive participle to say that something has been done.

So:

• выплатили = they paid out / someone paid out
• выплачено = it has been paid out

The version with выплачено focuses on the result, not on who did it.

That is very common in formal or written Russian, especially with things like documents, money, decisions, and procedures.

In the present tense, Russian usually omits the verb to be.

So where English says:

• The compensation has been paid or
• The compensation is already paid

Russian can simply say:

• Возмещение уже выплачено

The idea of is/has been is understood from the structure.

This is normal Russian grammar, not an omission or a shortened version.

Выплачено is the short passive participle, neuter singular, from the verb выплатить / выплачивать.

Why neuter singular? Because it agrees with возмещение, which is neuter singular.

Compare:

• Страховое возмещение выплачено
• Сумма выплачена — feminine singular
• Платёж выплачен — masculine singular
• Деньги выплачены — plural

So the ending changes to match the noun.

Here it is most naturally paid out.

The verb выплатить often means to pay money that is owed, due, or awarded, especially:

• compensation
• benefits
• salaries
• pensions
• insurance payouts

So with страховое возмещение, paid out is usually the best English match.

Yes, but it changes the structure and emphasis.

• Страховое возмещение уже выплачено
  = The insurance compensation has already been paid out
  Focus: the result/state; no agent mentioned.

• Страховое возмещение уже выплатили
  = They already paid out the insurance compensation
  Focus: an unspecified person or organization did it.

Russian often uses the second form with an implied they, but the original sentence sounds more formal and more typical for official language.

Because уже usually goes near the word or idea it modifies, and here it modifies the whole predicate: already paid out.

So:

• Страховое возмещение уже выплачено = neutral, very natural

You may also hear slight word-order variations depending on emphasis, for example:

• Уже выплачено страховое возмещение
• Страховое возмещение выплачено уже

But the original word order is the most standard and neutral.

Yes, it sounds fairly formal and official.

That is because:

• страховое возмещение is bureaucratic/legal vocabulary
• the short passive participle выплачено is very common in official statements

You might see this kind of sentence in:

• insurance documents
• claim status messages
• letters from a company
• legal or financial correspondence

In casual speech, people might say something a bit simpler depending on context, but this sentence is perfectly normal.

They are close, but not always identical in tone.

• возмещение often sounds more formal and legal, especially for reimbursement of loss or damage
• компенсация is also common, but can be a bit broader in use

In insurance language, страховое возмещение is a standard set phrase meaning the amount paid by the insurer for a covered loss.

So in this sentence, возмещение is the expected word.

Because выплатить is the natural verb for paying out money to someone.

• выплатить = to pay out, disburse
• оплатить = to pay for something

Compare:

• Страховое возмещение выплачено = The insurance compensation has been paid out
• Счёт оплачен = The bill has been paid

So with compensation, salary, benefits, pensions, and similar sums of money, выплатить is usually the right choice.

Then Russian would usually switch to a fuller verbal sentence, for example:

• Страховая компания уже выплатила страховое возмещение.
  = The insurance company has already paid out the compensation.

Or a passive construction with the agent added:

• Страховое возмещение уже выплачено страховой компанией.
  = The insurance compensation has already been paid out by the insurance company.

The original sentence leaves the payer unmentioned because that is often unnecessary or obvious from context.

The stress is:

• страхово́е
• возмеще́ние
• уже́
• вы́плачено

So roughly:

• stra-kha-VO-ye
• vaz-mye-SHCHE-ni-ye
• u-ZHE
• VY-pla-che-na

The most important stresses to remember are:

• страхово́е
• возмеще́ние
• уже́
• вы́плачено