Avui no porto efectiu, per això trauré diners del caixer.

Because portar often means to carry / to have on you, not just to bring.

So No porto efectiu means I’m not carrying any cash / I don’t have cash on me.

If you said no tinc efectiu, that can also be understood, but no porto efectiu is especially natural when talking about what you physically have with you at that moment.

Catalan often leaves out subject pronouns when they are clear from the verb ending.

• porto = I carry / I have on me
• trauré = I will take out / withdraw

So jo is unnecessary unless you want emphasis or contrast.

For example:

• Avui no porto efectiu... = neutral
• Jo avui no porto efectiu... = more emphatic, like I’m the one who doesn’t have cash today

Efectiu means cash.

It can function like a noun in this context, just as in English you can say cash without adding money.

So:

• portar efectiu = to carry cash
• pagar en efectiu = to pay in cash

It does not mean effective here, even though it looks similar to the English word.

Catalan often omits the article with uncountable or general nouns, especially when talking about something in a broad sense.

So no porto efectiu is natural in the same way English says I’m not carrying cash, not necessarily the cash.

Adding an article would usually change the meaning:

• no porto efectiu = I’m not carrying cash
• no porto l’efectiu = I’m not carrying the cash, meaning some specific cash already mentioned

Per això means that’s why, for that reason, or therefore.

It links the first idea to the result:

• Avui no porto efectiu → reason
• per això trauré diners del caixer → consequence

It is a very common expression in Catalan.

Do not confuse it with:

• per exemple = for example
• però = but
• això = this / that

Here, per això works as a connector meaning because of that.

Trauré is the future tense of the verb treure, which means to take out, to remove, and in banking contexts, to withdraw.

So:

• treure = to take out / withdraw
• trauré = I will take out / I will withdraw

This is an irregular future form, because it does not keep the full infinitive treure in the stem.

Some useful forms:

• trec = I take out
• treia = I was taking out
• vaig treure = I took out
• trauré = I will take out

In this sentence, trauré diners means I’ll withdraw money.

Because diners is normally used as a plural noun meaning money.

This is one of those nouns that does not match English exactly.

So Catalan says:

• No tinc diners = I don’t have money
• Necessito diners = I need money

Even though it looks plural, you usually translate it simply as money, not moneys.

Because de + el contracts to del in Catalan.

So:

• de + el caixer → del caixer

This is very common:

• del = de + el
• al = a + el

So diners del caixer means money from the ATM.

Yes, in everyday Catalan, caixer often refers to an ATM, especially when the context is about taking out money.

More fully, you may also hear:

• caixer automàtic = ATM / cash machine

In casual speech, people often shorten it to just caixer when the meaning is obvious.

Be aware that caixer / caixera can also mean cashier, depending on context. Here, because the sentence says trauré diners, it clearly means ATM.

The future is used because the speaker is talking about what they are going to do next.

• Avui no porto efectiu = present situation
• trauré diners del caixer = future action

Catalan, like English, can use a future form for a planned next step.

In conversation, Catalan can also use other ways to express the future, such as:

• treuré diners = I’ll withdraw money
• vaig a treure diners = I’m going to withdraw money

Both are possible, but trauré is perfectly natural here.

The word order is natural, but somewhat flexible.

Avui at the beginning sets the time frame: today.

So the sentence starts by establishing the situation for today, then gives the result.

You could also hear:

• No porto efectiu avui
• Avui no en porto, d’efectiu in more conversational styles

But Avui no porto efectiu is a straightforward, standard way to say it.

The comma separates the reason from the consequence:

• Avui no porto efectiu = reason
• per això trauré diners del caixer = consequence

It helps readability and reflects the pause you would naturally make when speaking.

It is not absolutely the core of the grammar, but it is good punctuation in a sentence like this.

Yes, in some contexts Catalan could replace efectiu or diners with the pronoun en, depending on what has already been mentioned.

For example:

• Avui no en porto = Today I’m not carrying any
• N’hauré de treure del caixer = I’ll have to withdraw some from the ATM

That said, for learners, the full version Avui no porto efectiu, per això trauré diners del caixer is clearer and easier to understand.

Yes. It is standard and natural.

A native speaker might also say similar versions such as:

• Avui no porto diners en efectiu, per això trauré diners del caixer.
• No porto cash, així que trauré diners del caixer. in more informal speech with an English borrowing
• Avui no tinc efectiu, així que aniré al caixer.

But the original sentence is completely normal and idiomatic.