Yes. All US Dollar banknotes issued since 1861 are still valid.
There are no U.S. dollar bills dated 1994, but all U.S. currency from the 1990s is still legal tender at face value.
Yes!
Yes, old 100 bills issued by the U.S. government are still valid currency and can be used for transactions.
Yes, old dollar bills issued by the U.S. Treasury remain valid for use in transactions as long as they are in good condition and not counterfeit.
not anymore. most people saved the 2 dollar bills like ethel.
No, though it did exist at one time.
Found my late husbands Woolwich Building Society book dated 1996 is it still valid?
Yes, the US Dollar 2006 series is still valid and can be used as legal tender for transactions.
Forever.
Yes, the US Dollar 2009 series is still valid and can be used as legal tender for transactions in the United States.
Yes, the US dollar 2013 series is still considered valid currency and can be used for transactions.
Please post a more complete question with the bill's date and seal color (green, blue, red, etc.) If there's a small letter next to the date, include that as well. $2 bills dated 1976 and later are only worth face value. Older $2 bills can be worth more but it depends on the factors in the earlier answer, above. Note that $2 bills have NEVER been discontinued and are STILL acceptable for use anywhere any other denomination is valid. They are still being printed (latest series dated 2008) although in much smaller quantities than other denominations.