12 Month Treasury Average

(12 MTA or 12 MAT)

12 Month Treasury Average Definition

What is the Treasury Average? What is the 12MAT? What is the 12MTA?

This Treasury Average index is the 12 month average of the monthly average yields of U.S. Treasury securities adjusted to a constant maturity of one year.  In plain English, this index is calculated by averaging the previous 12 rates of the 1 Year CMT.   Because this particular index is an annual average, it is more steady than the 1 Year Treasury Index.  It fluctuates slightly more than the 11th District Cost of Funds Index, although its movements track each other very closely, as shown on our comparison charts.  The terms 12 MTA (12 month treasury average) and 12 MAT (12 month average treasury) are used interchangeably.

12 Month Treasury Average History

Source: Derivation of rates reported by Federal Reserve Board

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