Ez egy tranzakció.

In Hungarian, the verb to be is usually left out in the present tense when the subject is third person singular or plural.

So English This is a transaction becomes simply:

• Ez egy tranzakció.

But in other persons, Hungarian does use the verb:

• Én orvos vagyok. = I am a doctor.
• Te orvos vagy. = You are a doctor.

So the missing is is completely normal here.

Ez means this.

In this sentence, it stands on its own as the subject:

• Ez = this
• egy tranzakció = a transaction

So Ez egy tranzakció literally matches This a transaction, but naturally means This is a transaction.

Egy can mean both one and a/an.

Here it is functioning as the indefinite article, so it means a:

• egy tranzakció = a transaction

If you stressed it strongly, it could also mean one transaction, but in a neutral sentence like this, it is usually just a.

Normally, no. Ez tranzakció sounds incomplete or unnatural in standard Hungarian.

With a singular countable noun like tranzakció, Hungarian normally uses egy in this kind of sentence:

• Ez egy tranzakció. = This is a transaction.

So if you want to identify something as a transaction, egy is the expected form.

That would be:

• ez a tranzakció = this transaction

This is different from:

• Ez egy tranzakció. = This is a transaction.

So compare:

• ez a tranzakció = one noun phrase, this transaction
• ez egy tranzakció = a full sentence, this is a transaction

That difference is very important.

Yes. This is a very normal, neutral Hungarian sentence.

Structure:

• Ez = subject
• egy tranzakció = predicate noun

So:

• Ez egy tranzakció.

This is the standard way to say it.

You could change the order for emphasis, but that would sound marked or stylistic. For a basic learner sentence, the given order is the one to use.

It is a loanword, and it is fairly international in meaning. It is used especially in formal, financial, business, technical, or administrative contexts.

In everyday speech, depending on context, Hungarians might sometimes choose a different word or a more specific expression, but tranzakció is absolutely a real and normal Hungarian word.

A rough English-friendly pronunciation is:

• trahn-zahk-tsee-oh

A few helpful points:

• a is like a in father
• ció is pronounced roughly like tsee-oh
• stress in Hungarian is always on the first syllable

So the stress is on tran-:

• TRAnzakció

It is in the nominative form, which is the basic dictionary form.

There is no case ending here because the noun is simply part of a predicate phrase:

• tranzakció = transaction

If Hungarian wanted a different grammatical role, it would add an ending, for example:

• tranzakciót = a transaction as a direct object

But in Ez egy tranzakció, the basic form tranzakció is correct.

Because Hungarian is being more literal to this.

If you are pointing something out or identifying something near you, ez is the natural choice:

• Ez egy tranzakció. = This is a transaction.

Hungarian does have ways to say it, but in a sentence like this, where English uses this, Hungarian also uses ez.

Yes. Then you would say:

• Ez a tranzakció. = This is the transaction.

Compare:

• Ez egy tranzakció. = This is a transaction.
• Ez a tranzakció. = This is the transaction.

So the difference between egy and a is important:

• egy = a/an
• a/az = the

Hungarian has two forms of the definite article:

• a
• az

Which one you use depends on the sound that follows:

• a before a consonant sound
• az before a vowel sound

Since tranzakció begins with t, a consonant, Hungarian uses:

• a tranzakció

If the next word began with a vowel, it would be az instead.

It is neutral.

Nothing in Ez egy tranzakció. is especially formal or informal. The noun tranzakció itself may sound somewhat technical or business-like because of its meaning, but grammatically the sentence is plain and neutral.