Skip to content Skip to footer site map

Sign In
Home
Treasury For...
AboutExpand About
Resource CenterExpand Resource Center
Empty
ServicesExpand Services
InitiativesExpand Initiatives
CareersExpand Careers
Connect with UsExpand Connect with Us

Resource Center

Daily Treasury Long Term Rate Data

XML These data are also available in XML format by clicking on the XML icon.
XSDThe schema for the XML is available in XSD format by clicking on the XSD icon.

Select type of Interest Rate Data
 
Select Time Period
 

DATELT COMPOSITE (>10 yrs)
10/01/142.88
10/02/142.91
10/03/142.90
10/06/142.89
10/07/142.82
10/08/142.83
10/09/142.82
10/10/142.79
10/14/142.70
10/15/142.66
10/16/142.68
10/17/142.73
10/20/142.70
10/21/142.74
10/22/142.75
10/23/142.79
10/24/142.79
10/27/142.78
10/28/142.81
10/29/142.82
10/30/142.80
10/31/142.83
DATETREASURY 20-yr CMTEXTRAPOLATION FACTOR
10/01/142.87N/A
10/02/142.90N/A
10/03/142.89N/A
10/06/142.88N/A
10/07/142.81N/A
10/08/142.82N/A
10/09/142.81N/A
10/10/142.77N/A
10/14/142.68N/A
10/15/142.64N/A
10/16/142.66N/A
10/17/142.70N/A
10/20/142.68N/A
10/21/142.72N/A
10/22/142.73N/A
10/23/142.77N/A
10/24/142.77N/A
10/27/142.75N/A
10/28/142.79N/A
10/29/142.79N/A
10/30/142.77N/A
10/31/142.81N/A
Friday Oct 31, 2014, 4:01 PM

Treasury Long-Term Average Rate and Extrapolation Factors. Beginning February 18, 2002, Treasury ceased publication of the 30-year constant maturity series. Instead, from February 19, 2002 through May 28, 2004, Treasury published a Long-Term Average Rate, "LT>25," (not to be confused with the Long-Term Composite Rate, definitions below). In addition, Treasury published daily linear extrapolation factors that could be added to the Long-Term Average Rate to allow interested parties to compute an estimated 30-year rate. On June 1, 2004, Treasury discontinued the "LT>25" average due to a dearth of eligible bonds. In place of the "LT>25" average, Treasury published the Treasury 20-year Constant Maturity rate on this page along with an extrapolation factor that was added to the 20-year Constant Maturity to obtain an estimate for a theoretical 30-year rate. On February 9, 2006, Treasury reintroduced the 30-year constant maturity and is no longer publishing the extrapolation factor.

The Long-Term Average Rate, "LT>25," was the arithmetic average of the bid yields on all outstanding fixed-coupon securities (i.e., excluding Inflation-Indexed securities) with 25 years or more remaining to maturity. This series first appeared on February 19, 2002, following discontinuation of the 30-year Treasury constant maturity series. Subsequently, the "LT>25" average was discontinued on June 1, 2004.

Linear Extrapolation Factors were determined by considering the slope of the yield curve at it's long end and extrapolating out to a theoretical 30-year point. To use the Extrapolation Factor to determine a 30-year proxy rate, add the factor to the 20-year Constant Maturity Rate. For example, if on a particular day the 20-year Constant Maturity was 5.40% and the Extrapolation Factor was 0.02%, then a 30-year theoretical rate would have been 5.40% + 0.02% = 5.42%. Publishing of the Linear Extrapolation Factors was discontinued on February 9, 2006 with the reintroduction of the 30-year Constant Maturity Rate.

The Long-Term Composite Rate is the unweighted average of bid yields on all outstanding fixed-coupon bonds neither due nor callable in less than 10 years.

For more information regarding these statistics contact the Office of Debt Management by email at debt.management@do.treas.gov.


Related Offices