Japanese phrase
___はいつまでに返せばいいですか？ ___ wa i tsu ma de ni kae se ba i i de su ka
Meaning
By when should I return ___?
When to use it
Asks for the deadline for returning something. It is polite and useful when checking a return time at a rental counter or service desk.
Example dialogue
レンタカーはいつまでに返せばいいですか？ re n ta kā wa i tsu ma de ni kae se ba i i de su ka
By when should I return the rental car?
明日の正午までです。 asu no shō go ma de de su
By noon tomorrow.