Zwrot pieniędzy jest możliwy pod warunkiem, że przedsiębiorca dostał przesyłkę zwrotną.

It means provided that, on condition that, or as long as.

So:

• Zwrot pieniędzy jest możliwy pod warunkiem, że...
• A refund is possible provided that...

This is a very common formal expression in Polish.

Because the fixed expression is pod warunkiem, że.

The noun warunek means condition, but after pod in this expression, Polish uses the instrumental case, so:

• warunek → nominative
• warunkiem → instrumental

You can think of pod warunkiem as a set phrase meaning under the condition / provided that.

It means refund, literally return of money.

Breakdown:

• zwrot = return
• pieniędzy = of money

So Polish often expresses refund as zwrot pieniędzy.

A few similar expressions:

• zwrot kosztów = reimbursement of costs
• zwrot towaru = return of goods
• dokonać zwrotu = to make/issue a return or refund

Because zwrot usually takes the thing being returned in the genitive case.

Here:

• pieniądze = nominative plural, money
• pieniędzy = genitive plural, of money

So:

• zwrot pieniędzy = return of money / refund

This is very natural Polish grammar after many nouns derived from verbs, especially in formal phrases.

Because możliwy agrees with zwrot, which is a masculine singular noun.

So:

• zwrot = masculine singular
• therefore możliwy = masculine singular form of possible

Compare:

• zwrot jest możliwy = the refund is possible
• reklamacja jest możliwa = the complaint is possible/valid
• rozwiązanie jest możliwe = the solution is possible

The adjective changes depending on the gender of the noun.

It means entrepreneur, business owner, or in many legal/consumer contexts simply the trader / the seller / the business.

In this sentence, it refers to the business side of the transaction, not the customer.

So depending on context, a natural English translation could be:

• the business
• the seller
• the trader
• the entrepreneur

In legal or consumer-protection language, przedsiębiorca is very common.

Because some masculine nouns in Polish end in -a. Przedsiębiorca is one of them.

This is similar to words like:

• mężczyzna = man
• kolega = male friend/colleague
• kierowca = driver
• sprzedawca = seller

Even though they end in -a, they are grammatically masculine when referring to a man.

That is why the verb is:

• przedsiębiorca dostał = the businessman/trader received

not dostała.

Dostał is the past tense of dostać, which usually means to get or to receive.

Here it means received:

• przedsiębiorca dostał przesyłkę zwrotną
• the business received the returned parcel

Why dostał?

• it is past tense
• it is masculine singular
• it matches przedsiębiorca

Forms:

• dostał = he received
• dostała = she received
• dostało = it received
• dostali / dostały = they received

Both can mean received.

• dostał is common and natural
• otrzymał is a bit more formal or official

In this sentence, either could work depending on style:

• przedsiębiorca dostał przesyłkę zwrotną
• przedsiębiorca otrzymał przesyłkę zwrotną

The version with otrzymał may sound slightly more formal/legal, but dostał is still perfectly normal.

It means the returned shipment/parcel or the return parcel.

Breakdown:

• przesyłka = shipment, parcel, consignment
• zwrotna = return, sent back

Together:

• przesyłka zwrotna = a return shipment / returned parcel

In shopping or e-commerce contexts, this usually means the package the customer sent back.

Because it is the direct object of dostał, so it must be in the accusative case.

Base form:

• przesyłka zwrotna = nominative

Object form:

• dostał przesyłkę zwrotną = received the return parcel

Both words change because the noun is feminine singular:

• przesyłka → przesyłkę
• zwrotna → zwrotną

Że means that and introduces a subordinate clause.

So:

• pod warunkiem, że przedsiębiorca dostał przesyłkę zwrotną
• provided that the business has received the returned parcel

In Polish, że is extremely common for introducing clauses like that...

Also, notice the comma before it:

• Polish normally uses a comma before że

Because in Polish, subordinate clauses introduced by words like że are normally separated by a comma.

So:

• Zwrot pieniędzy jest możliwy, pod warunkiem że... would be wrong in standard punctuation
• Zwrot pieniędzy jest możliwy pod warunkiem, że... is correct

This comma is required in standard written Polish.

Yes, it sounds fairly formal and administrative, which is very typical for shop regulations, return policies, and legal/consumer texts.

Especially formal elements are:

• zwrot pieniędzy
• jest możliwy
• pod warunkiem, że
• przedsiębiorca
• przesyłkę zwrotną

In everyday conversation, someone might say something simpler, like:

• Oddamy pieniądze, jeśli dostaniemy zwrot.
• Refund dostaniesz, jeśli paczka do nas wróci.

But the original sentence is appropriate for policy language.

Yes, that is a very natural translation.

A few good English versions are:

• A refund is possible provided that the seller has received the returned parcel.
• The refund is possible on condition that the business has received the return shipment.
• You can get a refund only if the seller has received the returned package.

The exact English wording depends on how natural or legal you want it to sound.

Not completely. Polish word order is flexible, though some versions sound more natural than others.

The original is neutral and clear:

• Zwrot pieniędzy jest możliwy pod warunkiem, że przedsiębiorca dostał przesyłkę zwrotną.

You could also say:

• Pod warunkiem, że przedsiębiorca dostał przesyłkę zwrotną, zwrot pieniędzy jest możliwy.

This puts more emphasis on the condition first.

So the meaning stays the same, but the focus changes a little.

Yes, the past tense verb would usually change if you are clearly referring to a woman.

For example:

• przedsiębiorczyni dostała przesyłkę zwrotną = the female business owner received the returned parcel

If you keep the noun przedsiębiorca, things get more complicated because in legal/official Polish it can sometimes be used in a gender-neutral or generic way, but in ordinary grammar agreement with a clearly female referent often shifts.

For a learner, the simplest rule is:

• masculine referent: dostał
• feminine referent: dostała

It can correspond to either, depending on context.

Polish past tense does not map exactly onto English tense choices. So:

• przedsiębiorca dostał przesyłkę zwrotną

could be translated as:

• the seller received the returned parcel
• the seller has received the returned parcel

In this sentence, English has received often sounds especially natural, because the result matters now: the refund is possible once the parcel has been received.