QZAB Rate: https://www.treasurydirect.gov/GA-SL/SLGS/selectQTCDate.htm
(a) Qualified zone academy bonds https://www.irs.gov/pub/irs-drop/n-16-20.pdf
QZAB Rate: https://www.treasurydirect.gov/GA-SL/SLGS/selectQTCDate.htm
(a) Qualified zone academy bonds https://www.irs.gov/pub/irs-drop/n-16-20.pdf