W księgowości pytają, czy faktura ma już podpis i pieczątkę.

Literally, w księgowości means in accounting.

In this sentence, it most naturally means in the accounting department or the people in accounting. Polish often uses this kind of location phrase to mean the people who work there.

So:

• w = in
• księgowość = accounting / bookkeeping / accounting department
• w księgowości = in accounting / in the accounting office

Also, księgowości is the locative form, because w usually takes the locative when it means in a place.

Because after w meaning in, Polish normally uses the locative case.

The dictionary form is:

• księgowość = accounting

But after w:

• w księgowości = in accounting

This is a very common pattern:

• w domu = in the house
• w pracy = at work
• w szkole = at school
• w księgowości = in accounting

So the ending changes because of grammar, not because the meaning changes.

This is very common in Polish. The subject is simply understood.

Pytają literally means they are asking, but in many contexts it is used in a vague, impersonal way:

• They’re asking in accounting...
• People in accounting are asking...
• Accounting wants to know...

Polish often leaves out subject pronouns like oni when the verb ending already shows who is doing the action.

So pytają by itself already tells you it is 3rd person plural.

Because czy introduces an indirect yes/no question.

So:

• Pytają, czy faktura ma już podpis i pieczątkę. = They’re asking whether / if the invoice already has a signature and a stamp.

Compare:

• Czy faktura ma już podpis i pieczątkę? = Does the invoice already have a signature and a stamp?
  This is a direct question.

• Pytają, czy faktura ma już podpis i pieczątkę. = They’re asking if / whether the invoice already has a signature and a stamp.
  This is an indirect question.

So czy can introduce both direct and indirect yes/no questions.

Because czy faktura ma już podpis i pieczątkę is a subordinate clause.

Polish punctuation usually puts a comma before clauses introduced by words like:

• czy
• że
• bo
• kiedy
• jeśli

So:

• W księgowości pytają, czy...

That comma is standard and expected in Polish.

Both are possible, but they mean things a little differently.

In your sentence:

• faktura ma podpis i pieczątkę = the invoice has a signature and a stamp

This focuses on whether those required elements are physically present on the document.

Another possible version:

• faktura jest podpisana i opieczętowana = the invoice is signed and stamped

This focuses more on the completed state of the document.

So the original sentence is very natural in office/business Polish, especially when checking whether a document contains the necessary formal elements.

Because the subject of the subordinate clause is faktura, which is singular.

• faktura = invoice
• ma = has

So:

• czy faktura ma... = whether the invoice has...

Even though pytają is plural, that belongs to the main clause:

• W księgowości pytają = People in accounting are asking
• czy faktura ma... = whether the invoice has...

There are two different verbs here, each agreeing with its own subject.

Because both are direct objects after ma, so they are in the accusative case, but different noun types behave differently.

1. podpis

This is a masculine inanimate noun.

For many masculine inanimate nouns, the nominative and accusative singular look the same.

• nominative: podpis
• accusative: podpis

So no visible change happens.

2. pieczątka

This is a feminine noun.

Feminine nouns in -a usually change to -ę in the accusative singular.

• nominative: pieczątka
• accusative: pieczątkę

So:

• ma podpis
• ma pieczątkę

This is a very important Polish pattern.

In this context, pieczątka means a stamp, especially an office or company stamp placed on a document.

Depending on context, English translations could include:

• stamp
• company stamp
• official stamp
• sometimes seal or chop

In Polish business language, pieczątka often refers to the ink stamp impression used on paperwork.

So podpis i pieczątka is a very common office phrase: signature and stamp.

Już means already.

So the sentence is not just asking whether the invoice has a signature and stamp, but whether it has them already.

That suggests some expectation or process, for example:

• the document was supposed to be signed earlier
• accounting is checking whether the formalities have been completed yet
• someone is waiting for the document to be ready

Without już, the sentence would be more neutral:

• czy faktura ma podpis i pieczątkę = whether the invoice has a signature and a stamp

With już, it adds the sense of by now / yet already completed.

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

The original:

• W księgowości pytają, czy faktura ma już podpis i pieczątkę.

This is natural and neutral.

Other possible versions include:

• Pytają w księgowości, czy faktura ma już podpis i pieczątkę.
• W księgowości pytają, czy faktura już ma podpis i pieczątkę.

These are understandable, but they may shift emphasis slightly.

The original sounds very normal because:

• W księgowości sets the scene first
• pytają gives the action
• czy... introduces what they want to know

No. Here czy means whether / if in the sense of an indirect question, not a condition.

So:

• Pytają, czy faktura ma już podpis i pieczątkę. = They are asking whether the invoice already has a signature and stamp.

It does not mean:

• They are asking if the invoice has..., then...

For real conditions, Polish would usually use jeśli or gdyby, depending on the type of sentence.

So in this sentence, czy is strictly interrogative, not conditional.

Because Polish has no articles.

English distinguishes between:

• an invoice
• the invoice

Polish usually just says:

• faktura

The exact meaning comes from context.

So faktura here could be understood as:

• the invoice
  or, in some contexts,
• an invoice

But in this sentence, the context strongly suggests the invoice—a specific invoice that accounting is asking about.

Yes, that is also possible.

Original:

• czy faktura ma już podpis i pieczątkę = whether the invoice has a signature and a stamp

Alternative:

• czy na fakturze jest już podpis i pieczątka = whether there is already a signature and a stamp on the invoice

Both are natural. The difference is mainly one of perspective:

• faktura ma... focuses on the document as possessing those elements
• na fakturze jest... focuses on what is physically present on the document

In office language, both can work well.

It is mostly neutral everyday business Polish.

It sounds like something someone might say in an office, by email, on the phone, or in conversation with coworkers.

It is not especially formal or especially casual. It is simply practical and natural workplace language.

A more formal written version might sometimes use slightly more official wording, but the sentence you have is completely normal and appropriate in professional context.