Ako ne mogu ispisati dokument kod kuće, odnijet ću datoteku u ured i tamo je ispisati.

After ako (if), Croatian very often uses the present tense for a real future condition, just as English says If I can’t... rather than If I won’t be able to... in many cases.

So:

• Ako ne mogu ispisati dokument kod kuće... = If I can’t print the document at home...

A more explicitly future-sounding version is also possible:

• Ako ne budem mogao ispisati dokument kod kuće...

Both are possible, but the version in your sentence is normal and natural.

Both ispisati and odnijeti are perfective verbs. That means they present the actions as single, completed events:

• ispisati = to print out / to print completely
• odnijeti = to take away / carry somewhere successfully

That fits this sentence, because the speaker is talking about two one-time future actions:

• first, taking the file to the office
• then, printing it there

If Croatian used imperfective verbs here, the meaning would sound more ongoing, repeated, or less focused on completion.

Here ispisati means to print out.

It can sometimes have related meanings depending on context, but in this sentence it clearly means producing a printed copy of something.

A learner may notice that Croatian also has forms like printati, especially in everyday speech and under English influence. But ispisati is a very standard and natural choice.

Kod kuće is a fixed, very common expression meaning at home.

Grammatically:

• kod is a preposition
• it takes the genitive
• kuće is the genitive singular of kuća (house/home)

So literally it is something like by/at the home, but idiomatically it simply means at home.

This is the Croatian future tense.

The verb is odnijeti (to take away / take somewhere), and the auxiliary is ću (I will).

In this word order, Croatian puts the auxiliary after the infinitive, and the infinitive usually loses its final -i:

• odnijeti + ću → odnijet ću

Another correct way to say it is:

• Ja ću odnijeti datoteku u ured...

Both mean the same thing. The version in your sentence is very standard.

Because Croatian distinguishes between:

• movement toward/into a place → accusative
• location in a place → locative

So:

• u ured = to the office / into the office
• u uredu = in the office

Since the speaker is taking the file to the office, u ured is the correct form.

Both words are direct objects, so both are in the accusative case.

The difference is that different noun types change differently:

• datoteka is feminine, so accusative singular becomes datoteku
• dokument is masculine inanimate, and masculine inanimate nouns usually have the same form in nominative and accusative singular

So:

• ispisati dokument
• odnijeti datoteku

Both are accusative, even though only one visibly changes.

Here je means it, not is.

It is the unstressed object pronoun referring back to datoteku (the file), which is feminine:

• datoteku → je = it

So:

• tamo je ispisati = print it there

This can confuse learners because je is also a form of biti (to be), but here it is clearly a pronoun.

Because je is a clitic: a short, unstressed word that has special placement rules in Croatian.

Clitics usually come near the beginning of their clause, not where English would put them. So Croatian says:

• tamo je ispisati

rather than placing je after the infinitive.

A fuller version of the clause would be:

• i tamo ću je ispisati

That may be easier for a learner to see.

Croatian often omits a repeated auxiliary when two future actions are linked in the same sentence and have the same subject.

So this:

• odnijet ću datoteku u ured i tamo je ispisati

means essentially the same as:

• odnijet ću datoteku u ured i tamo ću je ispisati

The second ću is understood, so it can be left out.

The sentence shifts perspective slightly:

• dokument = the document that needs to be printed
• datoteka = the digital file being taken to the office

That is quite natural. In real life, what you want is a printed document, but what you physically or digitally carry to the office is the file.

So the sentence is not being inconsistent; it is just choosing the most natural word for each stage of the situation.