About the new 10K/5K/1K Yen notes, how long are the old notes still valid?

I’ve been searching online about the due date for the validity of the old notes, but haven’t found anything. All they say that the old notes are still “valid” but will not continue to be produced.

I lived in the UK before, and when we had notes/coins replaced we had to exchange them at the bank before their validity ends. Any time after and shops wouldn’t accept them.

Is there any info out there on this?

4 comments
  1. They won’t become invalid. They will just be taken out of circulation gradually as banks take in old notes and dish out new notes. You still occasionally see Natsume Soseki notes in circulation.

  2. Perhaps for decades, or until the current government goes bankrupt.

    The Bank of Japan’s website has a list of “banknotes no longer produced but still valid today”.
    [https://www.boj.or.jp/note_tfjgs/note/valid/past_issue/index.htm](https://www.boj.or.jp/note_tfjgs/note/valid/past_issue/index.htm)

    For example, the 10 yen bill, which was discontinued in 1955, is still valid today. (They won’t work in many stores, but the Bank of Japan will accept them)

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