diff --git a/installer/data/mysql/atomicupdate/bug18736_add_rounding_syspref.perl b/installer/data/mysql/atomicupdate/bug18736_add_rounding_syspref.perl
new file mode 100644
index 0000000000..0f3c77f026
--- /dev/null
+++ b/installer/data/mysql/atomicupdate/bug18736_add_rounding_syspref.perl
@@ -0,0 +1,7 @@
+$DBversion = 'XXX';  # will be replaced by the RM
+if( CheckVersion( $DBversion ) ) {
+    # $dbh->do( "INSERT INTO systempreferences (variable,value,explanation,options,type) VALUES ('OrderPriceRounding',NULL,'Local preference for rounding orders before calculations to ensure correct calculations','|nearest_cent','Choice')" );
+
+    SetVersion( $DBversion );
+    print "Upgrade to $DBversion done (Bug 18736 - Add syspref to control order rounding)\n";
+}
diff --git a/installer/data/mysql/sysprefs.sql b/installer/data/mysql/sysprefs.sql
index 28cd85261c..77b44a227d 100644
--- a/installer/data/mysql/sysprefs.sql
+++ b/installer/data/mysql/sysprefs.sql
@@ -427,6 +427,7 @@ INSERT INTO systempreferences ( `variable`, `value`, `options`, `explanation`, `
 ('OpenLibraryCovers','0',NULL,'If ON Openlibrary book covers will be show','YesNo'),
 ('OpenLibrarySearch','0',NULL,'If Yes Open Library search results will show in OPAC','YesNo'),
 ('OrderPdfFormat','pdfformat::layout3pages','Controls what script is used for printing (basketgroups)','','free'),
+('OrderPriceRounding','','|nearest_cent','Local preference for rounding orders before calculations to ensure correct calculations','Choice'),
 ('OverDriveCirculation','0','Enable client to see their OverDrive account','','YesNo'),
 ('OverDriveClientKey','','Client key for OverDrive integration','30','Free'),
 ('OverDriveClientSecret','','Client key for OverDrive integration','30','YesNo'),
diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences/acquisitions.pref b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences/acquisitions.pref
index 81aaa5056d..8f9082a987 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences/acquisitions.pref
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences/acquisitions.pref
@@ -83,7 +83,14 @@ Acquisitions:
             - "days. Example: [30] Sets purgation of suggestions for those older than 30 days."
             - "<br><strong>WARNING:</strong> Leave this field empty if you don't want to activate this automatic feature."
             - "<br><strong>NOTE:</strong> This system preference requires the <code>misc/cronjobs/purge_suggestions.pl</code> cronjob. Ask your system administrator to schedule it."
-
+        -
+            - pref: OrderPriceRounding
+              default: ''
+              choices:
+                '': Don't round
+                nearest_cent: Round
+            - to nearest cent.<br>
+            - Determines whether full precision values or rounded values should be used in price calculations
         -
             - pref: UseACQFrameworkForBiblioRecords
               default: no