Planiramo Božić kod kuće.

Planiramo is the 1st person plural present tense of planirati = to plan.

So it means we plan or we are planning, depending on context.

• ja planiram = I plan / I am planning
• ti planiraš = you plan
• mi planiramo = we plan / we are planning

In Serbian, the present tense often covers both the simple present and the present continuous that English separates.

Serbian often drops subject pronouns when they are already clear from the verb ending.

So:

• Planiramo Božić kod kuće.
  already clearly means We are planning Christmas at home.

You could say Mi planiramo Božić kod kuće, but mi is usually added only for emphasis, contrast, or clarity.

Because Božić is the direct object of planiramo.

The verb planirati usually takes a direct object:

• planirati putovanje = to plan a trip
• planirati odmor = to plan a vacation
• planirati Božić = to plan Christmas

So there is no need for a preposition like for here.

Also, Božić stays in the same form as the nominative because it is a masculine inanimate noun, and in the singular its accusative is the same as its nominative.

It is in the accusative singular, because it is the direct object of planiramo.

With masculine inanimate nouns, nominative and accusative singular are often identical:

• Božić = nominative
• Božić = accusative

So the form does not change, even though the grammatical role does.

Kod kuće is a very common Serbian expression meaning at home.

It is made of:

• kod
  • genitive
• kuće = genitive singular of kuća (house/home)

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

This is one of the most natural ways to say at home in Serbian.

This is a very common learner question.

• kod kuće = at home
• u kući = in the house

The difference is similar to English:

• Kod kuće sam. = I am at home.
• U kući sam. = I am in the house.

Kod kuće focuses on home as the place where you live / your home situation.
U kući focuses more on being physically inside the building.

So in this sentence, kod kuće is the natural choice.

After kod, Serbian uses the genitive.

So:

• kuća = nominative singular
• kuće = genitive singular

That is why we say kod kuće, not kod kuća.

This pattern is very important:

• kod prijatelja = at a friend’s place / with a friend
• kod doktora = at the doctor’s
• kod kuće = at home

It can suggest both, depending on context.

Planiramo Božić kod kuće most naturally means something like:

• We’re planning Christmas at home
• We’re planning to have/spend Christmas at home

In natural English, we often make that idea more explicit. Serbian can leave it a bit more compact.

If you wanted to be more explicit in Serbian, you could also say things like:

• Planiramo da budemo kod kuće za Božić. = We plan to be at home for Christmas.
• Provešćemo Božić kod kuće. = We will spend Christmas at home.

But the original sentence is understandable and natural.

That is a neutral and natural word order in Serbian.

• Planiramo Božić kod kuće.

Serbian word order is more flexible than English, but word order still affects emphasis.

For example:

• Božić planiramo kod kuće.
  This puts more emphasis on Christmas.

• Kod kuće planiramo Božić.
  This sounds more marked and context-dependent.

So the original order is a normal, unmarked way to say it.

Grammatically it is present tense, but in meaning it often refers to a current plan about the future.

So:

• Planiramo Božić kod kuće.

means that right now, our plan is to have/spend Christmas at home.

This is very normal in Serbian. English does something similar with We’re planning Christmas at home or We’re planning to spend Christmas at home.

Yes. Božić is the name of the holiday Christmas, so it is capitalized.

So:

• Božić = Christmas

But kuće is not capitalized, because it is just a common noun form of kuća.

A rough pronunciation is BO-zhich.

A few helpful points:

• ž sounds like the s in measure
• ć is a soft sound, somewhat like a very soft ch, but more palatal than English ch

So Božić is approximately:

• BO-zhich

The stress is normally on the first syllable: BO-žić.

Yes, often you can.

For example:

• Planiramo Uskrs kod kuće. = We’re planning Easter at home.
• Planiramo Novu godinu kod kuće. = We’re planning New Year’s at home.

Just remember that different holidays may behave a little differently in form and usage, but the overall sentence pattern is the same:

• Planiramo + holiday/event + kod kuće