Monthly values for the 12-Month Treasury Average (MTA) index starting from January of 1955 have been calculated by us to three decimal places using the H.15 Federal Reserve Statistical Release data and are available on our website.

For monthly values for the MTA starting from January of 1990, click here. They are calculated to four decimal places.

Is the MTA calculated daily or just on a monthly basis? What day of the month is it released and who is responsible for publishing this index? If it is published more frequently than monthly where would I get the historical data from Jan 1, 1998 through today? Your help is appreciated.

There are only monthly values for this index. The MTA Index is calculated by Mortgage-X monthly at or about 7:00 PM on the last business day of the month using the reported Treasury Yield Curve Rates and is usually published on our website by the first business day of the following month. For monthly values for the MTA starting from January of 1998, click here.

On what day of the month does the MTA rate change?

The old index value is in effect until the release of the new index. The new MTA rate is computed by us by the end of the last business day of each calendar month. It is announced by Mortgage-X on or near the first business day of the following month*.

* Please note that your lender may compute the MTA rate on a different date.

I would like to know if you can help me identify the actual monthly value/rates that make up the MTA index. Meaning: the historical and current index data only reflects the 12 month average. I would like to know the individual monthly rates that are being used to calculate that average. It would be wonderful to have the past 12 months individual values. Thanks so much!

MTA {Apr-2015} = (0.23+0.25+0.22+0.20+0.21+0.13+0.10+0.11+0.11+0.11+0.10+0.10) / 12 = 0.156

Where:
0.23 = The Most Recent Monthly 1-Year CMT Rate {Apr-2015}
0.25 = Monthly 1-Year CMT for March, 2015
0.22 = Monthly 1-Year CMT for February, 2015
0.20 = Monthly 1-Year CMT for January, 2015
0.21 = Monthly 1-Year CMT for December, 2014
0.13 = Monthly 1-Year CMT for November, 2014
0.10 = Monthly 1-Year CMT for October, 2014
0.11 = Monthly 1-Year CMT for September, 2014
0.11 = Monthly 1-Year CMT for August, 2014
0.11 = Monthly 1-Year CMT for July, 2014
0.10 = Monthly 1-Year CMT for June, 2014
0.10 = Monthly 1-Year CMT for May, 2014

Do-It-Yourself MTA Calculation

Disclaimer We make no express or implied warranties or representations with respect to the 'Do-It-Yourself MTA Calculation' including, without limitation, warranties as to the results that may be obtained from your calculations or the use of the results. We shall not be liable for any indirect, special, incidental or consequential damages arising in connection with this Calculation or the results that may be obtained from your calculations, including without limitation, any loss of profits or business interruption.