German phrase
Bis wann muss bezahlt werden?
Meaning
By when must payment be made?
When to use it
Asks for the payment deadline. It is polite and common in daily speech and writing.
Example dialogue
Ich habe die Rechnung bekommen. Bis wann muss bezahlt werden?
I have received the invoice. By when must payment be made?
Bitte bis zum 20. Mai überweisen.
Please transfer the money by May 20.