Questions & Answers about Bankkortet mitt utløper snart, så jeg må ringe banken.
Norwegian often uses the definite form when talking about a specific, known thing—here, your bank card.
- et bankkort = a bank card (indefinite)
- bankkortet = the bank card (definite)
Since it’s immediately specified as mitt (my), the definite form is natural: bankkortet mitt = my bank card.
In Norwegian, it’s very common (and often most natural) to place possessives after a definite noun:
- bankkortet mitt = my bank card
You can also place it before, but then the noun is usually indefinite: - mitt bankkort = my bank card
Both are correct; the “noun + definite + possessive” pattern is extremely common in everyday speech.