diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/pos/register.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/pos/register.tt
index a341426eaa..bf30d93526 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/pos/register.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/pos/register.tt
@@ -505,9 +505,10 @@
            var amountoutstanding = button.data('amountoutstanding') || 0;
            var paid = amount - amountoutstanding;
            $("#paid + span").text(paid.format_price());
-           $("#returned").attr({ "value": paid.format_price(), "max": paid });
-           var member = button.data('member');
-           if ( member === '' ) {
+            $("#returned").attr({ "value": paid.format_price(), "max": paid });
+            var member = button.data("member");
+            // Hide AC option for anonymous transactions (no borrowernumber)
+            if (!member || member === "") {
                $("#refund_type option[value='AC']").remove();
            } else if ( $("#refund_type option[value='AC']").length == 0 ) {
                $("#refund_type").prepend('<option value="AC" selected="selected">Account credit</option>');
diff --git a/pos/register.pl b/pos/register.pl
index 8972b3da00..cf316475ed 100755
--- a/pos/register.pl
+++ b/pos/register.pl
@@ -137,13 +137,16 @@ if ( !$registers->count ) {
                             amount         => $amount
                         }
                     );
+
+                    # Only create a payout if refund_type is not 'AC' (Account Credit)
+                    # When 'AC' is selected, the refund stays as credit on the patron's account
                     unless ( $refund_type eq 'AC' ) {
                         my $payout = $refund->payout(
                             {
                                 payout_type   => $refund_type,
                                 branch        => $library_id,
                                 staff_id      => $logged_in_user->id,
-                                cash_register => $registerid,
+                                cash_register => $cash_register->id,
                                 interface     => 'intranet',
                                 amount        => $amount
                             }