Interest Expense and Average Interest Rate Graph
![Chart of Interest Expense](https://webarchive.library.unt.edu/eot2008/20090511172114im_/http://treasurydirect.gov/images/govt/charts/govt_intexpense.gif)
![D-link](https://webarchive.library.unt.edu/eot2008/20090511172114im_/http://treasurydirect.gov/images/dlink.gif)
Interest expense is cumulative per fiscal year, which includes the months of October through September.
The interest can be classified and analyzed in many ways. Some of the information you can view on interest includes:
- Interest by Security Type
- Marketable and Non-Marketable Security Interest
- Intragovernmental Holdings and Debt Held by the Public Interest
To find more information on the interest expense, visit our FAQs.