Die basiese salaris bevat nie die bonus nie.

Afrikaans usually forms standard negation with double nie:

• ... nie ... nie

So in Die basiese salaris bevat nie die bonus nie, the first nie comes after the verb phrase, and the second nie comes near the end of the clause.

A helpful way to think about it is:

• bevat nie = does not include
• final nie = closes the negative sentence

This is one of the most important sentence patterns in Afrikaans.

In a simple sentence like this, the pattern is:

• subject + verb + nie
  • object + final nie

So:

• Die basiese salaris = subject
• bevat = verb
• nie = first negative marker
• die bonus = object
• nie = final negative marker

That gives:

• Die basiese salaris bevat nie die bonus nie.

English speakers often want to place just one negative word, but Afrikaans normally needs both.

Yes. die here means the.

So:

• die basiese salaris = the basic salary
• die bonus = the bonus

Unlike English, Afrikaans does not change the article for gender. You use die for the with singular and plural nouns in many ordinary cases.

Examples:

• die salaris = the salary
• die bonus = the bonus
• die salarisse = the salaries

This is because the adjective comes before the noun.

In Afrikaans, adjectives often take an -e ending when used before a noun:

• basies = basic
• basiese salaris = basic salary

So the -e is part of the attributive adjective form.

This is very common:

• goed → goeie boek
• hoog → hoë gebou
• basies → basiese salaris

The exact adjective patterns can get a bit more detailed, but for a learner, it is enough to notice that adjectives before nouns often look different from their basic dictionary form.

bevat means contains, includes, or comprises, depending on context.

In this sentence, contains/includes is the natural idea:

• Die basiese salaris bevat nie die bonus nie.
• The basic salary does not include the bonus.

Yes, it is a normal and useful word, especially in formal, business, legal, or written contexts.

Related idea:

• inhou can also be used in some contexts for entail/include
• insluit is another common verb meaning include

But bevat is perfectly correct here.

Afrikaans verbs are much simpler than English verbs.

In the present tense, the verb usually stays the same regardless of the subject:

• Ek bevat = I contain
• Jy bevat = you contain
• Hy bevat = he contains
• Die salaris bevat = the salary contains

Afrikaans does not usually add an -s for he/she/it the way English does.

That is one reason many learners find Afrikaans verb conjugation easier than English.

Yes, that is a very natural alternative.

• Die basiese salaris bevat nie die bonus nie
• Die basiese salaris sluit nie die bonus in nie

Both mean that the bonus is not part of the basic salary.

There is a slight difference in feel:

• bevat = contains/includes, often a bit more formal or literal
• sluit ... in = includes, very common and natural

So your sentence is correct, but sluit ... in is also worth learning.

Yes. This is a normal main-clause word order:

• Subject: Die basiese salaris
• Verb: bevat
• Negative marker: nie
• Object: die bonus
• Final negative marker: nie

Afrikaans main clauses usually place the finite verb early in the sentence, often in the second position.

So this structure is very standard and natural.

In standard Afrikaans, you should keep both nies.

So the correct full sentence is:

• Die basiese salaris bevat nie die bonus nie.

In very informal speech, native speakers may sometimes reduce or blur parts of the negative pattern, but as a learner you should learn and use the full standard form.

It is the safest and most correct choice.

Yes. bonus is a noun, and it is a borrowing that looks very similar to English.

So:

• die bonus = the bonus

Many business-related words in Afrikaans resemble English, but you still need to watch the Afrikaans grammar around them, such as:

• the article die
• the negative pattern nie ... nie

So even when a word looks familiar, the sentence structure may still be different from English.

A yes/no question in Afrikaans usually puts the verb first:

• Bevat die basiese salaris nie die bonus nie?

That literally means:

• Does the basic salary not include the bonus?

If you want a more neutral question such as Does the basic salary include the bonus?, you would normally say:

• Bevat die basiese salaris die bonus?

So the negative question keeps the nie ... nie pattern, while the positive question has no nie at all.