Tôi biết cách chuyển khoản.

cách means way / method, and biết cách + verb is a very common Vietnamese pattern for know how to do something.

So:

• Tôi biết cách chuyển khoản. = I know how to make a bank transfer.

If you say:

• Tôi biết chuyển khoản.

people may still understand you, and in casual speech it can sound natural, but biết cách makes the meaning know how to clearer and more explicit.

A useful pattern is:

• biết cách làm gì = to know how to do something

Examples:

• Tôi biết cách nấu ăn. = I know how to cook.
• Cô ấy biết cách sửa máy tính. = She knows how to fix computers.

biết usually means to know.

In Vietnamese, biết can be used in a few related ways:

• know a fact / be aware of
  • Tôi biết anh ấy. = I know him.
• know how / have the skill
  • Tôi biết bơi. = I know how to swim.
• know how to do something with cách
  • Tôi biết cách chuyển khoản.

So in this sentence, biết is about having the knowledge or ability to do the action.

chuyển khoản usually means to transfer money through a bank account, or to make a bank transfer.

It is very common in banking and payment situations.

Examples:

• Tôi sẽ chuyển khoản cho bạn. = I’ll transfer the money to you.
• Bạn có thể chuyển khoản không? = Can you pay by bank transfer?

It is different from more general chuyển tiền, which means transfer money in a broader sense.
chuyển khoản sounds more specifically like a bank transfer / account transfer.

It is written as two separate words, but it functions together as a fixed expression.

You can think of it as a set phrase meaning:

• to make a bank transfer or
• bank transfer depending on context

In actual usage, Vietnamese often has multi-word expressions like this. Even though they are written separately, learners should often memorize them as a unit.

In chuyển khoản, khoản is part of the banking expression and relates to an account or an amount/item of money, depending on context and historical usage.

For beginners, the safest approach is:

• learn chuyển khoản as a fixed phrase
• do not try to interpret khoản too literally every time

This is often the best way to learn practical Vietnamese vocabulary.

Vietnamese word order is often quite direct:

• Tôi = I
• biết = know
• cách = way / method
• chuyển khoản = transfer money by bank transfer

So the structure is basically:

• Subject + know + way + action

That is how Vietnamese expresses know how to do something.

A very similar pattern appears in many sentences:

• Tôi biết cách dùng ứng dụng này. = I know how to use this app.
• Anh ấy biết cách nói chuyện với khách hàng. = He knows how to talk to customers.

Yes, it can absolutely stand alone.

Vietnamese often leaves out information that is obvious from context. In this case, chuyển khoản already strongly implies transferring money through a bank/account system, so you do not need to add an object.

If you want to be more specific, you can add details:

• Tôi biết cách chuyển khoản tiền. = I know how to transfer money.
• Tôi biết cách chuyển khoản cho bạn. = I know how to transfer money to you.
• Tôi biết cách chuyển khoản qua ngân hàng. = I know how to transfer through the bank.

But the original sentence is completely natural.

Yes, there can be a small nuance difference.

• Tôi biết cách chuyển khoản.

  • emphasizes knowing the method / procedure
  • sounds like I know how to do it

• Tôi biết chuyển khoản.

  • can sound a bit shorter and more conversational
  • may emphasize that the speaker is able to do bank transfers

In many everyday situations, both may work.
But biết cách is especially useful when you want to stress knowing the steps.

A rough pronunciation guide is:

• Tôi → kind of like toy (but with Vietnamese vowel quality)
• biết → approximately byet with a sharp falling tone
• cách → approximately kahk with a rising, checked tone
• chuyển → approximately chwee-uhn with the proper Vietnamese vowel and tone
• khoản → approximately khwahn with a dipping/creaky tone in Southern speech or corresponding Northern tone pattern

A learner-friendly approximation:

• Toy byet kahk chwee-uhn khwahn

But tones matter a lot in Vietnamese, so it is best to learn this from audio rather than English spelling.

Tone notes:

• biết
• cách
• chuyển
• khoản

all carry tones, and getting them wrong may make you harder to understand.

Not always.

tôi is a neutral, polite, and very common way to say I, especially with strangers, in formal situations, or when no special relationship is being emphasized.

But Vietnamese pronouns depend heavily on age, relationship, and social context. In real life, a speaker might say:

• mình
• em
• anh
• chị
• con
• cháu

instead of tôi, depending on who they are speaking to.

So the sentence could change, for example:

• Em biết cách chuyển khoản.
• Anh biết cách chuyển khoản.

The grammar stays the same; only the pronoun changes.

Put không before the verb biết:

• Tôi không biết cách chuyển khoản. = I don’t know how to make a bank transfer.

This is the normal Vietnamese pattern:

• Subject + không + verb

Examples:

• Tôi không biết. = I don’t know.
• Cô ấy không biết cách làm việc đó. = She doesn’t know how to do that.

A very common way is to add không at the end:

• Bạn biết cách chuyển khoản không? = Do you know how to make a bank transfer?

You can also use:

• Bạn có biết cách chuyển khoản không?

Both are natural.
The version with có can sound a little more explicitly like a yes/no question, but both are extremely common.

Patterns:

• [Subject] + verb + ... + không?
• [Subject] + có + verb + ... + không?

Yes. Depending on the situation, Vietnamese speakers might also say:

• Tôi biết chuyển khoản.
• Tôi biết cách chuyển tiền.
• Tôi biết chuyển tiền qua ngân hàng.

The best choice depends on what exactly you mean:

• chuyển khoản = specifically bank transfer / account transfer
• chuyển tiền = transfer/send money more generally

So if the situation is clearly about paying from one bank account to another, chuyển khoản is a very good choice.

It is mostly neutral.

Why:

• tôi is neutral-polite
• biết cách is standard and natural
• chuyển khoản is everyday standard vocabulary, especially in banking/payment contexts

So the sentence works well in:

• customer service
• everyday conversation
• messages about payment
• practical situations

It does not sound overly formal, but it is not slangy either.