Den variable avtalen har bruddgebyr.

Because avtale is a common-gender noun in Bokmål: en avtale.

In Norwegian:

• den is used with common-gender singular
• det is used with neuter singular
• de is used with plural

So:

• den variable avtalen = the variable agreement
• If the noun were neuter, you would use det instead.

The basic form of the adjective is variabel.

But adjectives change form depending on grammar. After a definite determiner like den, the adjective usually takes the -e form:

• en variabel avtale = a variable agreement
• den variable avtalen = the variable agreement

So variable here is the normal definite/weak form of variabel.

A quick pattern:

• en variabel avtale
• et variabelt abonnement
• variable avtaler
• den variable avtalen

This is a very common Norwegian pattern called double definiteness.

When a noun is definite and has an adjective before it, Norwegian normally uses:

1. a definite word like den/det/de
2. the noun in its definite form

So:

• avtalen = the agreement
• den variable avtalen = the variable agreement

You usually cannot just say variable avtalen in standard Bokmål.

Compare:

• Avtalen har bruddgebyr. = The agreement has a termination fee.
• Den variable avtalen har bruddgebyr. = The variable agreement has a termination fee.

The main dictionary forms are:

• den → determiner/article
• variabel → adjective
• avtale → noun, usually listed as en avtale
• ha → verb, dictionary form of har
• bruddgebyr → noun, et bruddgebyr

So the phrase breaks down like this:

• den variable avtalen ← from en variabel avtale
• har ← present tense of ha
• bruddgebyr ← indefinite noun form

Because Norwegian usually writes compound nouns as one word.

Here:

• brudd = break / breach / termination
• gebyr = fee

So:

• bruddgebyr = termination fee / breach fee

This is very normal in Norwegian. English often writes similar expressions as two words, but Norwegian usually combines them:

• mobilabonnement
• forsikringsselskap
• strømavtale
• bruddgebyr

Also, in Norwegian compounds, the last part is the main noun. That means bruddgebyr behaves like gebyr, which is why the indefinite form is et bruddgebyr.

Both are possible, but they do not feel exactly the same.

In this sentence, har bruddgebyr sounds like a general feature of the agreement:

• Den variable avtalen har bruddgebyr.
• roughly: The variable agreement carries/includes a termination fee.

This article-less style is very common in descriptions of products, plans, and rules.

Using et is also possible:

• Den variable avtalen har et bruddgebyr.

That sounds a bit more concrete, as if you are thinking of one specific fee.

So:

• har bruddgebyr = more general/feature-like
• har et bruddgebyr = more specific/countable

Because ha means to have, and the sentence is talking about the agreement having a feature.

• har = has
• er = is

So:

• Den variable avtalen har bruddgebyr = The variable agreement has a termination fee
• not is a termination fee

Norwegian uses ha very naturally for this kind of thing:

• Abonnementet har bindingstid.
• Forsikringen har egenandel.
• Avtalen har bruddgebyr.

Yes, but it is also the most basic Norwegian main-clause pattern.

The sentence is:

• Den variable avtalen = subject
• har = verb
• bruddgebyr = object/complement

So the structure is:

Subject + Verb + Object

This also fits the Norwegian V2 rule: in a main clause, the finite verb normally comes in the second position.

Since the subject comes first here, the verb naturally comes right after it:

• Den variable avtalen har bruddgebyr.

If something else came first, the verb would still stay in second position:

• Dessverre har den variable avtalen bruddgebyr.

So the sentence is straightforward and very typical Norwegian word order.