Mar 01, | Current | Change | Previous | 52 week | |
2021 | Rate | Rate | High | Low | |
1 Mo CMT |
0.03 |
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0.04 | 1.45 | 0.00 |
2 Mo CMT |
0.03 |
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0.04 | 1.37 | 0.00 |
3 Mo CMT |
0.05 |
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0.04 | 1.27 | 0.00 |
6 Mo CMT |
0.07 |
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0.05 | 1.11 | 0.02 |
1 Yr CMT |
0.08 |
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0.08 | 0.97 | 0.06 |
2 Yr CMT |
0.13 |
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0.14 | 0.86 | 0.09 |
3 Yr CMT |
0.27 |
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0.30 | 0.85 | 0.10 |
5 Yr CMT |
0.71 |
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0.75 | 0.89 | 0.19 |
7 Yr CMT |
1.12 |
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1.15 | 1.23 | 0.36 |
10 Yr CMT |
1.45 |
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1.44 | 1.54 | 0.52 |
20 Yr CMT |
2.11 |
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2.08 | 2.25 | 0.87 |
30 Yr CMT |
2.23 |
![]() |
2.17 | 2.33 | 0.99 |
Constant Maturity Treasury (CMT) rates are the interpolated yields based on the yields of the recently auctioned treasury bills, notes, and bonds. For example, 1 Year CMT rate is the yield on treasury securities having a 1 year term. CMT rates are also known as the Treasury Yield Curve rates.
CMT rates are calculated by the US Department of Treasury and are published daily on its website at Daily Treasury Yield Curve Rates page by 6:00 PM Eastern Time each trading day. CMT rates are also published by the Federal Reserve Board in their H.15 Selected Interest Rates (Weekly) Publication under rates for Treasury constant maturities.
CMT rates are available for the following terms: 1 month CMT, 3 month CMT, 6 month CMT, 1 year CMT,2 year CMT, 3 year CMT, 5 year CMT, 7 year CMT, 10 year CMT, 20 year CMT, 30 year CMT.
CMT rates are used as an index for a number of Adjustable Rate Mortgage (ARM) loans and Pay Option ARMs. 1 year CMT, 3 month CMT, and 1 month CMT rates are the most commonly used indexes for ARMs
Constant Maturity Treasury rates are calculated using a quasi-cubic hermite spline function. The inputs are the close of business bid yields for the on-the-run treasury securities. The securities that are used as inputs are the most recently auctioned treasury bills (4 week, 13 week, 26 week, and 52 week), treasury notes (2 year, 3 year, 5 year, 7 year, and 10 year), and 30 year treasury bond, and the composite rate in the 20-year maturity range. The quotes for these securities are obtained at or near the 3:30 PM close each trading day.
The US Treasury explains the methodology in detail on its Treasury Yield Curve Methodology webpage.
Updated: Mar 01, 2021
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