Utbetalingen kommer neste uke.

-en makes the noun definite singular. So:

• utbetaling = a payment / a payout
• utbetalingen = the payment / the payout

In this sentence, the speaker is talking about a specific payment that both sides already know about.

Yes. Utbetaling is a compound noun:

• ut = out
• betaling = payment

So the idea is something like payment out, which becomes payout / disbursement / payment in natural English.

Compound nouns are very common in Norwegian, and they are usually written as one word, not two.

Here kommer means something like is coming, arrives, or will arrive.

It does not have to mean physical movement, as in a person coming somewhere. In Norwegian, å komme is also used for things like:

• money arriving
• a letter arriving
• news coming
• an event happening soon

So in this sentence, kommer means the payment will reach you / be made next week.

Because Norwegian very often uses the present tense for future events when the time is already clear from the sentence.

Here, neste uke clearly shows that the event is in the future, so kommer works naturally.

This is similar to English sentences like:

• The train leaves tomorrow.
• My package arrives next week.

So Utbetalingen kommer neste uke is completely normal Norwegian.

In Norwegian, many common time expressions do not use an article. So you say:

• neste uke = next week
• forrige uke = last week
• denne uka/uken = this week

Using just neste uke is the normal way to express next week.

If you add den, as in den neste uka/uken, it usually becomes more specific or contrastive, closer to the following week or that next week rather than the basic next week.

Because in the fixed time expression neste uke, Norwegian normally uses the noun in an indefinite-looking form.

So:

• neste uke = next week
• not usually neste uken/uka in neutral standard phrasing

In Bokmål, uke is the common standard form here. You may also see uka in other contexts or more colloquial style, but neste uke is the form learners should treat as the default expression.

Yes. That is also correct.

Both are natural:

• Utbetalingen kommer neste uke.
• Neste uke kommer utbetalingen.

The difference is mainly focus:

• Utbetalingen kommer neste uke starts with the thing being talked about: the payment
• Neste uke kommer utbetalingen starts with the time: next week

When a time expression comes first in a Norwegian main clause, the verb still has to stay in second position, which is why you get:

• Neste uke kommer utbetalingen
• not Neste uke utbetalingen kommer

Yes, but they add different shades of meaning.

• Utbetalingen kommer neste uke.
  Very natural and straightforward. Often the most idiomatic choice.

• Utbetalingen skal komme neste uke.
  Suggests expectation, plan, or official schedule: it is supposed to come next week.

• Utbetalingen vil komme neste uke.
  More explicit future, but often a little less natural in everyday speech than the simple present.

So if you just want the most normal everyday phrasing, kommer is an excellent choice here.

It is understandable in everyday language, but it sounds a bit administrative or financial.

You often see utbetaling in contexts like:

• salary
• benefits
• insurance
• refunds
• government payments
• bank messages

In casual speech, people might sometimes use a more specific word instead, depending on the situation, such as lønna for the salary/paycheck. But utbetalingen is a very normal and useful word in official or financial contexts.