قبل ما تدفع، تاكد من المبلغ.

In Levantine, قبل ما + present verb is a very common way to say before doing something / before you do something.

So:

• قبل ما تدفع = before you pay

Here ما is not the negative not. It is just part of this colloquial pattern.

In more formal Arabic, you would usually see:

• قبل أن تدفع

So قبل ما is the more everyday Levantine-style wording.

After قبل ما, Levantine normally uses the present/imperfect verb:

• قبل ما تروح = before you go
• قبل ما توصل = before you arrive
• قبل ما تدفع = before you pay

Even though the action is in the future from the speaker’s point of view, Arabic still uses the present form here.

Also, in Levantine pronunciation, تدفع is often said more like tidfaʿ rather than the more formal tadfaʿ.

Arabic often does not need a separate word for you, because the verb itself already shows it.

• تدفع = you pay
• تاكد / تأكد = make sure said to you

So the sentence is addressed to you even though there is no separate إنت.

If you added إنت, it would usually sound more emphatic:

• قبل ما تدفع، إنت تأكد من المبلغ

But in normal speech, the pronoun is usually omitted.

تاكد is an informal spelling of the imperative تأكّد, meaning make sure or check carefully / verify.

It is a command directed to one male person.

A few useful points:

• Standard spelling: تأكّد
• Informal typing often drops the hamza: تاكد
• In spoken Levantine, many people also say اتأكد

So depending on spelling style and region, you may see:

• تأكد
• تاكد
• اتأكد

All are pointing to the same basic idea here: make sure.

Because the verb تأكّد normally goes with من when it means make sure of or verify.

So:

• تأكد من المبلغ = make sure of the amount
• تأكد من العنوان = make sure of the address
• تأكد من الوقت = make sure of the time

Here من does not literally mean from in the English sense. It is just the preposition this verb commonly takes.

المبلغ means the amount or the sum of money.

• مبلغ = an amount / a sum
• المبلغ = the amount / the sum

The الـ makes it definite, so it is talking about a specific amount, probably the amount on a bill, invoice, receipt, or payment screen.

It is very understandable, but it leans colloquial because of قبل ما and the informal spelling تاكد.

A more Standard Arabic version would be:

• قبل أن تدفع، تأكّد من المبلغ.

So the difference is mainly:

• قبل ما = colloquial / Levantine-friendly
• قبل أن = formal / Standard Arabic

Everything else is close enough that speakers of either style would understand it.

The sentence you were given is for one male.

To one female:

• قبل ما تدفعي، تأكدي من المبلغ.

To more than one person:

• قبل ما تدفعوا، تأكدوا من المبلغ.

So the verb endings change depending on who you are speaking to.

A reasonable Levantine-style pronunciation is:

• ʔabl ma tidfaʿ, t2akkad min il-mablagh

You may also hear small regional differences, especially in:

• قبل as ʔabl or ʔabel
• من as min or men
• تأكد as t2akkad or it2akkad

So pronunciation can vary a bit, but the structure stays the same.

Because informal Arabic writing online and in messages often leaves out hamzas and other spelling details.

So:

• careful spelling: تأكّد
• casual spelling: تاكد

This is very common in everyday typed Arabic. Learners should know the standard spelling, but they should also expect to see simplified spellings like this in real life.

In this sentence, تأكد من is closest to make sure or verify.

It has the sense of confirming that something is correct.

So here it is not just casually looking at the amount. It suggests checking it carefully enough to be confident it is right.

That is why تأكد من المبلغ feels very natural in this context.