diff --git a/ADMINISTRATION.md b/ADMINISTRATION.md
index f72c39d..79189cd 100644
--- a/ADMINISTRATION.md
+++ b/ADMINISTRATION.md
@@ -21,3 +21,11 @@ The invoices should be generated in `invoices/sent/2022/`.
 The ruby script can be edited to change the start of the range of invoice numbers and to generate the output in a different directory.
 
 The data used to generate the invoices is in `members.csv`.
+
+## Running reports
+
+We keep a plain-text ledger of transactions in ~cotech.journal~. Using the [hledger](https://hledger.org/) tool we can generate reports. A typical one is the (financial) year-by-year break down of income and expenses which we report occasionally on the [discourse forum](https://community.coops.tech/c/cotech/fund/25).
+
+```
+hledger -f cotech.journal is -p "yearly from 2019-04-06"
+```