Dopłata jest możliwa.

Dopłata usually means an extra payment, an additional charge, or a top-up payment.

The exact English wording depends on context:

• in shopping or services: surcharge / extra charge
• in tickets, bookings, upgrades, etc.: additional payment
• in finance or billing: top-up / supplementary payment

So Dopłata jest możliwa means that paying extra is possible, or that an extra charge/payment can be made.

Because możliwa is an adjective and it has to agree with dopłata.

Dopłata is:

• singular
• feminine
• nominative

So the adjective also takes the feminine singular nominative form:

• masculine: możliwy
• feminine: możliwa
• neuter: możliwe

That is why we get Dopłata jest możliwa, not możliwy or możliwe.

It is in the nominative singular.

In this sentence, dopłata is the grammatical subject:

• Dopłata = the extra payment / surcharge
• jest możliwa = is possible

So this is a normal subject + verb + adjective structure, and the subject appears in the nominative.

Jest is the 3rd person singular present tense of być (to be), so it means is.

The sentence is literally:

• Dopłata = additional payment
• jest = is
• możliwa = possible

So: An additional payment is possible.

In Polish, jest is often included in full neutral sentences like this. It makes the sentence complete and standard.

Yes, sometimes.

You may also see:

• Dopłata możliwa.

This sounds more like:

• a notice
• a short label
• formal service language
• information on a sign, website, or form

The full sentence Dopłata jest możliwa is more neutral and complete.
The version without jest is shorter and a bit more elliptical, like Additional payment possible in English signage.

Yes. Polish word order is flexible.

For example:

• Dopłata jest możliwa. — neutral
• Możliwa jest dopłata. — more emphasis on possible
• Jest możliwa dopłata. — also possible, depending on context

The most natural basic version is usually Dopłata jest możliwa.

Changing the order usually changes emphasis, not the core meaning.

You can say that too, but it is not exactly the same structure.

• Dopłata jest możliwa = An additional payment is possible
• Można dopłacić = One can pay extra / It is possible to pay extra

The difference is:

• dopłata focuses on the payment itself as a thing
• można dopłacić focuses on the action of paying extra

Both are natural, but they present the idea differently.

It is related to the verb dopłacić, which means to pay extra, to add money, or to make up the difference.

Compare:

• dopłacić = to pay extra
• dopłata = extra payment / surcharge / additional payment

This is a very common noun-verb relationship in Polish.

A rough pronunciation guide is:

• Dopłata ≈ doh-PWAH-tah
• jest ≈ yest
• możliwa ≈ MOZH-lee-vah

A few useful notes:

• ł sounds like English w
• ż sounds like the s in measure
• stress in Polish usually falls on the second-to-last syllable

So:

• do-PŁA-ta
• jest
• moż-LI-wa

Not always. Polish has more than one way to express possible.

Here, możliwa works because it describes a noun:

• dopłata jest możliwa = the extra payment is possible

But in other sentences Polish may use:

• można = it is possible / one can
• da się = it can be done
• jest możliwe, że... = it is possible that...

So possible does not always translate as możliwy / możliwa / możliwe. It depends on the sentence structure.

It is basically neutral, but it can sound slightly formal or administrative, depending on context.

You might see it in:

• customer service messages
• booking systems
• online forms
• payment information
• official notices

In everyday spoken Polish, people might more often say something like:

• Można dopłacić.
• Da się dopłacić.

But Dopłata jest możliwa is completely natural and correct.