A variety of financial reports can be selected on the "Reports" menu": Balance Sheet:shows Assets, Liabilities and Equity. Profit And Loss State:shows Income and expenses over a selectable period. Transaction Reportshows transactions in an account, presented in a variety of ways. Stock Portfolio provides a quick summary of your stocks, their current value, and profits made. Balance Tracker tracks the balance of one or more accounts over time, and supports graphical output (if you have gnuplot installed). Once you select a report, a report window will appear: The report is displayed in a resizable, scrollable window. To control the report, you can use the toolbar buttons at the top of the window: Back and Forward allow you to view the previous contents of the window, just like a web browser Parameters pops up a dialog box allowing you to change the information presented in the report: See the help for the individual reports for details of options available. Export allows you to export the contents of the report as a HTML file for later viewing or printing. Close closes the report window. It is possible to write your own reports to meet your own needs, if you can program a little. You will need to know Scheme (a LISP-like programming language), and it is an excellent idea to have a copy of the Gnucash source code available. The reporting interface is presently undocumented, but you can get a good idea of how it works by examining the file src/scm/report/hello-world.scm in the GnuCash source distribution. You will also need to access data from the "engine" to get information for your report. This is performed by a set of Scheme wrapper functions that are documented in the file src/g-wrap/gnc.html. You may wish to examine some of the other reports in src/scm/report for an indication of how they are used. At present, reports are produced by internally creating HTML and rendering this with a HTML widget. (Future versions of GnuCash will hopefully support a more flexible system). If you need more information, or have developed a new report that may be of use to others, please contact the GnuCash development mailing list at gnucash-devel@gnucash.org.