3 responses

  1. Salvatore DiFranco
    July 2, 2012

    The stay in circulation until they are destroyed.

  2. JJ
    July 2, 2012

    I think its because banks take out old bills of circulation if they become to beat up and ripped. Old money Im sure comes into circulation when someone finds old money and decides to spend it at a store. I came across a $20 from the 60’s last month

  3. champ_85
    July 2, 2012

    According to the Department of the Treasury, the average lifetime for a dollar bill is 18 months. Just like any currency, the individual dollar can hang around for years, but still others don’t make it for even a month, so they can only calculate for the “average” lifetime. Dollar bills nave the lowest circulation time for any U.S paper money due to the frequency of use.

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