diff --git a/lib/NGCP/Panel/Role/API/BillingProfiles.pm b/lib/NGCP/Panel/Role/API/BillingProfiles.pm
index 4d7b9d2ddc..1866751a7a 100644
--- a/lib/NGCP/Panel/Role/API/BillingProfiles.pm
+++ b/lib/NGCP/Panel/Role/API/BillingProfiles.pm
@@ -9,6 +9,7 @@ use Data::HAL::Link qw();
 use HTTP::Status qw(:constants);
 use NGCP::Panel::Utils::DateTime;
 use NGCP::Panel::Utils::Contract;
+use NGCP::Panel::Utils::Preferences;
 use NGCP::Panel::Form::BillingProfile::Admin qw();
 
 sub hal_from_profile {
@@ -89,8 +90,52 @@ sub update_profile {
         }
     }
 
+    my $old_prepaid = $profile->prepaid;
     $profile->update($resource);
 
+    # if prepaid flag changed, update all subscribers for customers
+    # who currently have the billing profile active
+    my $rs = $c->model('DB')->resultset('billing_mappings')->search({
+        billing_profile_id => $profile->id,
+    });
+    my $contract_rs = NGCP::Panel::Utils::Contract::get_contract_rs(
+schema => $c->model('DB'));
+    if($old_prepaid && !$profile->prepaid) {
+        foreach my $map($rs->all) {
+            my $contract = $map->contract;
+            next unless($contract->contact->reseller_id); # skip non-customers
+            my $chosen_contract = $contract_rs->find({id => $contract->id});
+            next unless( defined $chosen_contract && $chosen_contract->get_column('billing_mapping_id') == $map->id ); # is not current mapping
+            foreach my $sub($contract->voip_subscribers->all) {
+                my $prov_sub = $sub->provisioning_voip_subscriber;
+                next unless($sub->provisioning_voip_subscriber);
+                my $pref = NGCP::Panel::Utils::Preferences::get_usr_preference_rs(
+                    c => $c, attribute => 'prepaid', prov_subscriber => $prov_sub);
+                if($pref->first) {
+                    $pref->first->delete;
+                }
+            }
+        }
+    } elsif(!$old_prepaid && $profile->prepaid) {
+        foreach my $map($rs->all) {
+            my $contract = $map->contract;
+            next unless($contract->contact->reseller_id); # skip non-customers
+            my $chosen_contract = $contract_rs->find({id => $contract->id});
+            next unless( defined $chosen_contract && $chosen_contract->get_column('billing_mapping_id') == $map->id ); # is not current mapping
+            foreach my $sub($contract->voip_subscribers->all) {
+                my $prov_sub = $sub->provisioning_voip_subscriber;
+                next unless($prov_sub);
+                my $pref = NGCP::Panel::Utils::Preferences::get_usr_preference_rs(
+                    c => $c, attribute => 'prepaid', prov_subscriber => $prov_sub);
+                if($pref->first) {
+                    $pref->first->update({ value => 1 });
+                } else {
+                    $pref->create({ value => 1 });
+                }
+            }
+        }
+    }
+
     return $profile;
 }
 
diff --git a/lib/NGCP/Panel/Role/API/Customers.pm b/lib/NGCP/Panel/Role/API/Customers.pm
index d6291a1069..2ca71ce1d6 100644
--- a/lib/NGCP/Panel/Role/API/Customers.pm
+++ b/lib/NGCP/Panel/Role/API/Customers.pm
@@ -9,6 +9,7 @@ use Data::HAL::Link qw();
 use HTTP::Status qw(:constants);
 use NGCP::Panel::Utils::DateTime;
 use NGCP::Panel::Utils::Contract;
+use NGCP::Panel::Utils::Preferences;
 use NGCP::Panel::Form::Contract::ProductSelect qw();
 
 sub hal_from_customer {
@@ -118,7 +119,8 @@ sub update_customer {
     my ($self, $c, $customer, $old_resource, $resource, $form) = @_;
 
     my $billing_mapping = $customer->billing_mappings->find($customer->get_column('bmid'));
-    $old_resource->{billing_profile_id} = $billing_mapping->billing_profile_id; 
+    $old_resource->{billing_profile_id} = $billing_mapping->billing_profile_id;
+    $old_resource->{prepaid} =  $billing_mapping->billing_profile->prepaid;
     unless($resource->{billing_profile_id}) {
         $self->error($c, HTTP_UNPROCESSABLE_ENTITY, "Invalid 'billing_profile_id', not defined");
         return;
@@ -183,6 +185,32 @@ sub update_customer {
         );
     }
 
+    if($billing_profile) { # check prepaid change if billing profile changed
+        if($old_resource->{prepaid} && !$billing_profile->prepaid) {
+            foreach my $sub($customer->voip_subscribers->all) {
+                my $prov_sub = $sub->provisioning_voip_subscriber;
+                next unless($prov_sub);
+                my $pref = NGCP::Panel::Utils::Preferences::get_usr_preference_rs(
+                    c => $c, attribute => 'prepaid', prov_subscriber => $prov_sub);
+                if($pref->first) {
+                    $pref->first->delete;
+                }
+            }
+        } elsif(!$old_resource->{prepaid} && $billing_profile->prepaid) {
+            foreach my $sub($customer->voip_subscribers->all) {
+                my $prov_sub = $sub->provisioning_voip_subscriber;
+                next unless($prov_sub);
+                my $pref = NGCP::Panel::Utils::Preferences::get_usr_preference_rs(
+                    c => $c, attribute => 'prepaid', prov_subscriber => $prov_sub);
+                if($pref->first) {
+                    $pref->first->update({ value => 1 });
+                } else {
+                    $pref->create({ value => 1 });
+                }
+            }
+        }
+    }
+
     # TODO: what about changed product, do we allow it?
 
     return $customer;