oneul gwanribireul naeya haeyo.

Not usually. 관리비 is typically a building maintenance / management fee, especially for apartments, officetels, or other shared buildings.

It may cover things like:

• cleaning of shared areas
• security
• elevator maintenance
• trash handling
• sometimes shared utilities or building services

It is often separate from rent, such as 월세 for monthly rent.

를 is the object particle. It marks 관리비 as the thing being paid.

So:

• 관리비를 내다 = to pay the maintenance fee

In Korean, the object usually comes before the verb.

That is a very common question. 내다 has several meanings depending on context, and one of them is to pay.

So in money-related expressions:

• 돈을 내다 = to pay money
• 요금을 내다 = to pay a fee
• 관리비를 내다 = to pay the maintenance fee

This is a normal and very common use of 내다.

-아/어야 해요 is a grammar pattern meaning:

• have to
• need to
• must

So:

• 내야 해요 = have to pay

In this sentence, it expresses obligation: the speaker is saying that paying the maintenance fee is necessary.

내야 해요 is the contracted form of 내어야 해요.

This kind of contraction is very common in Korean, especially in everyday speech.

So:

• 내다
• 내어야 해요
• 내야 해요

The shortened form sounds more natural in normal conversation.

The subject is omitted because Korean often leaves it out when it is already understood from context.

Depending on the situation, this sentence could mean:

• I have to pay the maintenance fee today
• You have to pay the maintenance fee today
• We have to pay the maintenance fee today

If you want to make it explicit, you could say:

• 제가 오늘 관리비를 내야 해요 = I have to pay the maintenance fee today

오늘 means today. It tells you when the action needs to happen.

So the sentence is saying that the payment has to be made today.

Time expressions like 오늘, 내일, and 어제 often come near the beginning of a Korean sentence.

In real usage, it can feel like either today or by today, depending on context.

This sentence often naturally implies:

• the payment needs to be made sometime today
• today is the deadline

If you want to make by today more explicit, Korean often uses 오늘까지:

• 오늘까지 관리비를 내야 해요 = I have to pay the maintenance fee by today

해요 is the polite conversational style. It is very common in everyday Korean and is appropriate in many normal situations.

Compare:

• 내야 해요 = polite, everyday
• 내야 합니다 = more formal
• 내야 해 = casual, less polite

So this sentence sounds polite but not overly formal.

Yes, in casual spoken Korean, object particles like 를 are often omitted when the meaning is still clear.

So both are possible:

• 오늘 관리비를 내야 해요
• 오늘 관리비 내야 해요

The version with 를 is clearer and especially good for learners, so it is safer to keep it.

Yes, Korean word order is somewhat flexible, especially with time expressions.

For example, these are all possible:

• 오늘 관리비를 내야 해요
• 관리비를 오늘 내야 해요

Both mean basically the same thing. The first one is very natural because time expressions often come early in the sentence.

The verb usually stays at the end.

Adding 은 to 오늘 gives it a stronger topic or contrast feeling.

• 오늘 관리비를 내야 해요 = I have to pay the maintenance fee today.
• 오늘은 관리비를 내야 해요 = As for today, I have to pay the maintenance fee today / At least today, I have to pay the maintenance fee.

오늘은 can suggest contrast, such as:

• maybe not yesterday
• maybe not tomorrow
• but today, this is what needs to be done

Without 은, the sentence is more neutral.

Yes, in most everyday situations they mean almost the same thing:

• 내야 해요
• 내야 돼요

Both mean have to pay.

A rough nuance:

• 내야 해요 can sound a little more neutral or standard
• 내야 돼요 can sound a little more conversational

In daily speech, both are extremely common.