Bulgarian Lev (BGN) replaced by Euro 1 Jan 2026.

libgnucash/engine/gnc-euro.cpp

@@ -31,6 +31,7 @@ static const std::map<std::string,double> gnc_euro_rates =
 {
     { "ATS",  13.7603 },  /* austrian schilling */
     { "BEF",  40.3399 },  /* belgian franc */
+    ( "BGN",  1.95583 },  /* Bulgarian lev */
     { "CYP",  .585274 },  /* cyprus pound */
     { "DEM",  1.95583 },  /* german mark */
     { "EEK",  15.6466 },  /* Estonian Kroon */

libgnucash/engine/iso-4217-currencies.xml

@@ -351,7 +351,8 @@
   local-symbol="fr."
 />
 <!-- "BGL" - "Bulgarian Lev A/99"
-  1999-07-05 "BGN" 1000
+     Pegged 1000 to 1 DEM 1997-1999 
+     1999-07-05 "BGN" 1000
 -->
 <currency
   isocode="BGL"
@@ -365,7 +366,8 @@
   local-symbol=""
 />
 <!-- "BGN" - "Bulgarian Lev"
-  scheduled replacement: 2012-01-01 "EUR" 1.95583 (=DEM)
+    Pegged 1.95583 to 1 EUR 1999-2026
+    Admitted to Euro-zone 1 Jan 2026
 -->
 <currency
   isocode="BGN"