A bankszámlakivonat tranzakciót tartalmaz.

In Hungarian, a and az are the definite articles, so they mean the.

• a is used before words that begin with a consonant
• az is used before words that begin with a vowel

So:

• a bankszámlakivonat = the bank statement
• az autó = the car

This is different from English, where a/an is indefinite. Hungarian indefinite articles are also egy, which literally means one, but often works like English a/an.

Because Hungarian often leaves the indefinite object without an article, especially in simple factual sentences.

So:

• tranzakciót tartalmaz = contains a transaction / contains transaction data, depending on context

If you wanted to make it explicitly one transaction, you could say:

• egy tranzakciót tartalmaz = it contains one/a transaction

If you wanted the transaction, you would use the definite article and also change the verb form:

• a tranzakciót tartalmazza = it contains the transaction

So in your sentence, the lack of article helps show that tranzakció is being treated as an indefinite object.

The -t ending marks the accusative case, which usually shows the direct object of the verb.

Here, the thing being contained is the transaction, so:

• tranzakció = transaction
• tranzakciót = transaction as the direct object

This is extremely common in Hungarian:

• könyv = book

• könyvet olvas = reads a book

• levelet ír = writes a letter

So in your sentence, tranzakciót is the thing that the bank statement contains.

Hungarian verbs often have two conjugation patterns:

• indefinite conjugation
• definite conjugation

The choice depends mainly on whether the object is indefinite or definite.

Here:

• tranzakciót is indefinite
• so the verb is tartalmaz

Compare:

• A bankszámlakivonat tranzakciót tartalmaz.
  = The bank statement contains a transaction.

• A bankszámlakivonat a tranzakciót tartalmazza.
  = The bank statement contains the transaction.

This definite/indefinite verb distinction is one of the biggest differences between Hungarian and English.

It is a compound noun, which is very common in Hungarian.

It can be broken down like this:

• bank = bank
• számla = account / bill
• bankszámla = bank account
• kivonat = extract / statement

So:

• bankszámlakivonat = bank account statement or simply bank statement

Hungarian often builds long nouns by combining smaller words into one unit, where English would often use separate words.

The sentence has a very neutral, straightforward word order:

• A bankszámlakivonat = subject
• tranzakciót = object
• tartalmaz = verb

So the structure is basically:

The bank statement + transaction-ACC + contains

Hungarian word order is more flexible than English, but it is strongly connected to focus and emphasis. This sentence sounds neutral and dictionary-like.

Other word orders are possible in different contexts, but this one is a normal basic pattern.

Hungarian often places the verb later than English does, especially in neutral statements with a subject and object before it.

English usually prefers:

• The bank statement contains a transaction.

Hungarian can naturally say:

• A bankszámlakivonat tranzakciót tartalmaz.

This does not sound strange in Hungarian. You should not expect Hungarian to copy English word order closely.

A rough pronunciation guide is:

bank-saaam-la-ki-vo-nat

More carefully:

• bank = similar to English bank
• sz = pronounced like English s
• á = a long a, somewhat like ah
• kivonat = ki-vo-nat

A few useful pronunciation points:

• sz = s
• plain s = sh
• á is longer than a
• stress in Hungarian usually falls on the first syllable of the whole word

So the main stress is on:

BANKszámlakivonat

It is a loanword, ultimately related to the international word transaction.

That is very common in modern Hungarian, especially in business, finance, technology, and administration.

Even though it looks familiar to an English speaker, you still need to remember the Hungarian grammar around it:

• tranzakció = transaction
• tranzakciót = transaction as object

So the word may be easy to recognize, but its Hungarian endings still matter.

Most directly, the singular tranzakciót means a transaction as an indefinite singular object.

However, in real-life contexts, Hungarian sometimes uses singular nouns in a more general or category-like way than English would. So depending on the context, a translation such as contains transaction information may also make sense.

Still, if you want to say clearly contains transactions in the plural, Hungarian would normally use the plural object:

• tranzakciókat tartalmaz = contains transactions

So the safest basic reading of your sentence is:

The bank statement contains a transaction.

It is in the nominative form, meaning the basic dictionary form with no extra case ending.

That is because it is the subject of the sentence:

• A bankszámlakivonat = the bank statement

By contrast:

• tranzakciót has the accusative -t because it is the object

So the sentence shows a very useful contrast:

• subject with no special ending
• object with -t

Yes. That would mean:

• This bank statement contains a transaction

Here:

• ez a = this
• bankszámlakivonat = bank statement

So the original sentence is a plain statement about the bank statement, while adding ez a makes it specifically this bank statement.

That kind of expansion is very common and natural in Hungarian.