diff --git a/src/report/standard-reports/transaction.scm b/src/report/standard-reports/transaction.scm
index 85bb53711fa..7ea79933782 100644
--- a/src/report/standard-reports/transaction.scm
+++ b/src/report/standard-reports/transaction.scm
@@ -33,6 +33,7 @@
 
 (use-modules (gnucash main)) ;; FIXME: delete after we finish modularizing.
 (use-modules (srfi srfi-1))
+(use-modules (srfi srfi-13))
 (use-modules (gnucash gnc-module))
 (use-modules (gnucash gettext))
 
@@ -660,6 +661,14 @@
       '())
     #f #t))
 
+  (gnc:register-trep-option
+   (gnc:make-string-option
+    gnc:pagename-accounts (N_ "Account Substring")
+    "a5" (N_ "Match only above accounts whose fullname contains substring e.g. ':Travel:' will \
+match Expenses:Travel:Holiday and Expenses:Business:Travel. Can be left blank, which will \
+disable the substring filter.")
+    ""))
+
   (gnc:register-trep-option
    (gnc:make-account-list-option
     gnc:pagename-accounts (N_ "Filter By...")
@@ -1422,6 +1431,7 @@ Credit Card, and Income accounts.")))))
   (gnc:report-starting reportname)
   (let ((document (gnc:make-html-document))
 	(c_account_1 (opt-val gnc:pagename-accounts "Accounts"))
+	(c_account_substring (opt-val gnc:pagename-accounts "Account Substring"))
 	(c_account_2 (opt-val gnc:pagename-accounts "Filter By..."))
 	(filter-mode (opt-val gnc:pagename-accounts "Filter Type"))
         (begindate (gnc:timepair-start-day-time
@@ -1444,6 +1454,11 @@ Credit Card, and Income accounts.")))))
     ;;(gnc:warn "accts in trep-renderer:" c_account_1)
     ;;(gnc:warn "Report Account names:" (get-other-account-names c_account_1))
 
+    (set! c_account_1
+          (filter (lambda (acc)
+                    (string-contains (gnc-account-get-full-name acc) c_account_substring))
+                  c_account_1))
+    
     (if (not (or (null? c_account_1) (and-map not c_account_1)))
         (begin
           (qof-query-set-book query (gnc-get-current-book))