A garancia regisztrációja holnap lesz.

Because regisztrációja means its registration or the registration of it.

In A garancia regisztrációja, the noun garancia means warranty/guarantee, and regisztrációja is the possessed form of regisztráció:

• regisztráció = registration
• regisztrációja = its registration

So the whole phrase literally works like:

• a garancia regisztrációja = the warranty’s registration / the registration of the warranty

This is a very common Hungarian structure: instead of using of, Hungarian often uses a possessive ending on the second noun.

Here -ja is a third-person singular possessive ending.

It shows that something belongs to or is associated with it:

• a ház ajtaja = the house’s door / the door of the house
• az autó színe = the car’s color
• a garancia regisztrációja = the warranty’s registration

Which possessive ending appears depends on the noun. With regisztráció, the natural form is regisztrációja.

So this is not a random ending to memorize separately for this sentence; it is part of Hungarian possessive grammar.

A is the definite article, meaning the.

So:

• A garancia regisztrációja = The warranty registration
• without a, the phrase would be more like warranty registration in a less definite or less complete sense

Hungarian uses a/az much like English uses the, though not always in exactly the same places.

Here it signals that we are talking about a specific registration event: the warranty registration.

Lesz is the future form of van (to be).

This sentence is saying that something will be tomorrow:

• holnap lesz = will be tomorrow

So:

• A garancia regisztrációja holnap lesz. = The warranty registration will be tomorrow.

Hungarian often expresses the future with present tense, but with to be, the future form lesz is very common and natural when you clearly mean a future time.

Usually not in this exact structure.

With many action verbs, Hungarian can often use present tense plus a future time word:

• Holnap megyek. = I’m going tomorrow.

But with van (to be), the future is normally expressed with lesz:

• Holnap lesz a találkozó. = The meeting will be tomorrow.
• A garancia regisztrációja holnap lesz.

So lesz is the expected form here.

The sentence is:

• A garancia regisztrációja = the warranty registration
• holnap = tomorrow
• lesz = will be

So the basic structure is:

• subject/topic + time expression + verb

Hungarian word order is flexible, but it is not random. It often depends on topic and focus rather than a rigid English-style order.

This version sounds fairly neutral:

• A garancia regisztrációja holnap lesz.

It presents the warranty registration as the topic, then gives the new information that it will happen tomorrow.

Yes, absolutely.

That version is also natural:

• Holnap lesz a garancia regisztrációja.

The meaning is basically the same, but the emphasis shifts a bit. Starting with holnap puts tomorrow in a more prominent position.

Very roughly:

• A garancia regisztrációja holnap lesz.
  = As for the warranty registration, it will be tomorrow.
• Holnap lesz a garancia regisztrációja.
  = It will be tomorrow that the warranty registration takes place.

Both are good Hungarian. The choice depends on what the speaker wants to highlight.

Because Hungarian usually does not use a separate word equivalent to English of in this kind of noun phrase.

Instead, Hungarian uses a possessor + possessed noun with possessive ending structure:

• a garancia regisztrációja literally: the warranty its-registration

This is how Hungarian commonly expresses relationships like:

• the color of the car
• the door of the house
• the registration of the warranty

So if you are looking for an English-style of, it is built into the grammar instead.

Because holnap is an adverb meaning tomorrow.

Time adverbs like this usually stand on their own:

• ma = today
• holnap = tomorrow
• tegnap = yesterday

So:

• holnap lesz = will be tomorrow

There is no need for an article here, and no extra ending is required in this sentence.

It can be, especially in everyday speech and in commercial contexts, but there are also other words you may see.

Common related terms:

• garancia = guarantee / warranty
• jótállás = warranty, especially in a more official or legal sense
• szavatosság = another legal/consumer-rights term, often not exactly the same as jótállás

So garancia regisztrációja is understandable and natural enough, especially in product-related contexts, but depending on the context you might also encounter:

• a jótállás regisztrációja

For a learner, garancia is a very useful everyday word.

It is a loanword, ultimately from an international form similar to English registration.

Hungarian uses many such international words, especially in formal, technical, business, and administrative language. That is why it may look familiar to an English speaker.

Even though it is a loanword, it behaves like a normal Hungarian noun, so it takes Hungarian endings:

• regisztráció
• regisztrációja
• regisztrációt
• regisztrációval

So the stem may feel familiar, but the grammar around it is fully Hungarian.

A fairly literal breakdown would be:

• A = the
• garancia = warranty / guarantee
• regisztrációja = its registration / registration-of-it
• holnap = tomorrow
• lesz = will be

So a literal rendering is something like:

• The warranty’s registration tomorrow will be.

That sounds odd in English, of course, but it helps show how Hungarian builds the sentence.

A natural English translation is simply:

• The warranty registration will be tomorrow.

Yes. Even though the verb is just lesz (will be), the sentence naturally means that the event is scheduled for tomorrow.

So in real English, depending on context, you might translate it as:

• The warranty registration will be tomorrow.
• The warranty registration takes place tomorrow.
• The warranty will be registered tomorrow.

The last one is slightly different in structure, but it may match the real-world meaning in some contexts.

So the Hungarian sentence is about the timing of the registration event.

Yes, it is complete and grammatical.

It is somewhat formal because of words like garancia and regisztráció, but that is perfectly normal in administrative or product-related language.

A native speaker could certainly say or write it, especially in contexts like:

• customer service
• product registration
• warranty paperwork
• scheduling

So from a learner’s point of view, this is a good example of:

• the definite article a
• a possessive noun structure
• a time adverb
• future lesz with to be