Treasury Yield Curve

The U.S. Department of the Treasury in conjunction with the Federal Reserve System provides yields for bills, notes, and bonds at various maturities for each day in which the instruments are available for trading. This app shows those yields starting on the first trading day of January 2010 onward. The Treasury provides daily updates on-line lagged by 24 hours and the app retrieves the updates when it is connected to the Internet.

Additionally, you may plot the yield curve and get an estimate of the yield for all months from 1 to 360 (1 month to 30 years) by means of a slider.

The estimated yields are computed by linear interpolation between the actual yields. Moving the slider shows the estimate for any month you choose as well as a simple plot of the actual data.


changes in version 6.0
  • Added 30-year bond series from January 2010 to present
  • Some GUI modifications to accommodate iOS 10
changes in version 5.7
  • Historical data from January 2, 2010 through August 25, 2016 are preinstalled in the app. If your historical record has no large gaps (more than a weekend or a holiday), then simply update the app and it will be current
  • However, if your app's historical record contains a gap of more than a few days, delete the app from your iPad or iPhone and reinstall from scratch from the iTunes App Store. Naturally, updates and reinstallations are free to current users
changes in version 5.5
  • GUI changes
  • Slider fine-tuning buttons are continuously adjustable up or down when held down
  • Modified syntax of Facebook and Twitter links
  • Streamlined code
  • You may delete an older version and replace it with this new one to get the full data set through July 1, 2015. Updates will occur when you reopen the app subsequently
changes in version 5.2
  • Daily Treasury yields have been updated through May 29, 2014. Updates beyond that date are available as automatic downloads when the app is opened and connected to the Internet
  • Corrected positioning of yearly header in scrolling view on iPhone version
  • Some GUI improvements
changes in version 5.1
  • In the iPad version, the ability to select or deselect data periods for the time-series graph has been added to a popup menu
  • Also, the table data entries, the time-series graph lines and the labels in the popup where selections and deselections can be made are color-coordinated
  • Daily Treasury yields have been updated through Feb 6, 2014. Updates beyond that date are available as automatic downloads when the app is opened and connected to the Internet
change in version 5.0
  • Complete rewrite and redesign for iOS 7
change in version 4.2
  • Fixed bug that could cause a crash when the app is not connected to the Internet

revised: April 26, 2017