
inklusive
including
Used as a preposition to express that something is included or contained in a price or a whole.
Der Preis beträgt 50 Euro pro Person, inklusive Frühstück.
The price is 50 euros per person, including breakfast.
inclusive / including
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including
Used as a preposition to express that something is included or contained in a price or a whole.
Der Preis beträgt 50 Euro pro Person, inklusive Frühstück.
The price is 50 euros per person, including breakfast.

inclusive
Used as an adjective to describe something or someone that is oriented toward social inclusion and participation for all people, especially minorities or people with disabilities.
Unsere Schule arbeitet an einem Konzept für einen inklusiven Unterricht.
Our school is working on a concept for inclusive teaching.
When 'inklusive' (including) is used as a preposition, the following noun takes the genitive in standard German. In colloquial speech, however, the dative is very common and is often felt to sound more natural.
Der Preis versteht sich inklusive des Zubehörs.
The price includes the accessories.
You can recognize the meaning from the grammar: If 'inklusive' (including) is used as a preposition before a noun, it means 'included'. If it is declined like an adjective, e.g. 'ein inklusives Team' (an inclusive team), it is about social inclusion.
Die Reise kostet 500 Euro inklusive Flug.
The trip costs 500 euros including the flight.
As a preposition, 'inklusive' (including) can come before or after the noun it refers to. Placing it after the noun is especially common in price information.
Das Menü kostet 25 Euro inklusive einem Getränk.
The menu costs 25 euros including a drink.
In the meaning of 'socially inclusive', 'inklusiv' (inclusive) is often used in social and educational contexts. Typical combinations are 'inklusive Gesellschaft' (inclusive society), 'inklusiver Arbeitsplatz' (inclusive workplace), or 'inklusives Lernen' (inclusive learning).
Das Ziel ist eine inklusive Gesellschaft, in der alle teilhaben können.
The goal is an inclusive society in which everyone can participate.
until / to
“Bis” names an endpoint in time but, depending on the context, leaves it open whether that day is included. “Inklusive” explicitly makes clear that the stated endpoint is included. Use “inklusive” when you want to avoid misunderstandings about the last valid day.

Die Ausstellung ist bis Sonntag inklusive geöffnet.
The exhibition is open through Sunday.
Die Ausstellung ist bis Sonntag geöffnet.
The exhibition is open until Sunday.