preposition
including, inclusive of
B1
'inklusive' means 'including' or 'inclusive of', used to indicate something is included (e.g., inklusive Steuern). Formally governs the genitive (inklusive Steuern), but in everyday speech the dative or no explicit case is common. It functions as a preposition/particle and is not inflected irregularly. Usage note: it can appear before or after the noun.
Examples
Das Frühstück ist im Preis inklusive.
Breakfast is included in the price.
Der Preis ist 50 Euro inklusive Steuern.
The price is 50 euros including taxes.
Der Preis war inklusive Steuern, was die Kunden überraschte, als sie die Rechnung sahen.
The price included taxes, which surprised the customers when they saw the bill.
Details
Mnemonics
Imagine a price tag with a circle that says '+ tax' and the word 'inklusive' under it.
Looks like English 'inclusive' — same meaning: includes things.
Notes
In formal usage 'inklusive' commonly takes the genitive (inklusive Steuern). In colloquial German you may also hear dative or constructions without a case marker.