Medmorkvoten er i foreldrepengesøknaden.

It is a compound noun:

• medmor = co-mother
• kvote = quota or allotted share

So medmorkvoten means the co-mother’s quota. In Norwegian administrative language, this usually refers to the part of parental leave or parental benefits reserved for the co-mother.

A medmor is not just any mother. It is a specific legal term in Norwegian.

It usually refers to the female parent who is not the birth mother, for example in a female same-sex couple. So medmor is closer to co-mother than to simply mother.

Because Norwegian normally writes compound nouns as a single word.

So:

• medmor
  • kvote → medmorkvote
• medmorkvote
  • definite ending -n / -en → medmorkvoten

English often uses separate words, but Norwegian usually does not. Writing medmor kvoten would look wrong.

It is another compound noun:

• foreldrepenger = parental benefit(s)
• søknad = application

Together, foreldrepengesøknad means application for parental benefits.

Then the definite ending -en is added:

• foreldrepengesøknaden = the parental benefit application

This kind of long compound is very normal in Norwegian, especially in official language.

Because Norwegian often puts definiteness at the end of the noun instead of using a separate article.

For example:

• en kvote = a quota
• kvoten = the quota

and

• en søknad = an application
• søknaden = the application

So in this sentence, medmorkvoten already means the co-mother’s quota, and foreldrepengesøknaden already means the parental benefit application.

Here i means in.

So i foreldrepengesøknaden means in the parental benefit application.

In context, this can mean something like:

• it is included in the application
• it appears inside the application
• it is part of the application

So it may be literal or slightly more abstract, depending on the situation.

This is normal Norwegian statement word order:

• Medmorkvoten = subject
• er = verb
• i foreldrepengesøknaden = prepositional phrase

So the structure is basically:

subject + verb + place/location phrase

That is the standard pattern for a simple statement.

Yes. You could say:

I foreldrepengesøknaden er medmorkvoten.

That puts the location first for emphasis. In Norwegian, when something else comes first, the verb still stays in second position. That is a very important Norwegian pattern.

So:

• Medmorkvoten er i foreldrepengesøknaden.
• I foreldrepengesøknaden er medmorkvoten.

Both are grammatically possible, though the first one is more neutral.

It is capitalized only because it is the first word of the sentence.

Norwegian does not capitalize common nouns the way German does. So in the middle of a sentence, it would normally be written medmorkvoten, not Medmorkvoten.

Yes, it is natural, especially in administrative or informational language.

er i simply says that something is in or is included in something else. In more explicit language, someone might also say:

• Medmorkvoten er en del av foreldrepengesøknaden.
• Medmorkvoten finnes i foreldrepengesøknaden.

But er i is straightforward and completely understandable.