How do you say "When is the deadline?" in Japanese?

Quick use

Use いつまでですか (itsu made desu ka) at work when you need to ask the deadline, end date, or “by when” timing.

Chunk or pattern

• This is best learned as one practical question.
• Use it when the key missing information is the deadline.

Core words

• いつ: when.
• まで: until / by.

Helper words and endings

• ですか: polite question ending.

Practical note

By itself, this means “until when?” In work contexts, it often functions as “When is the deadline?” because the task or submission is already clear.