diff --git a/app/billing/rest.py b/app/billing/rest.py
index 66726bb5a..8aa6a7f31 100644
--- a/app/billing/rest.py
+++ b/app/billing/rest.py
@@ -9,7 +9,7 @@ from app.dao.monthly_billing_dao import (
 )
 from app.dao.date_util import get_financial_year, get_months_for_financial_year
 from app.errors import register_errors
-from app.models import SMS_TYPE, EMAIL_TYPE
+from app.models import SMS_TYPE, EMAIL_TYPE, LETTER_TYPE
 from app.utils import convert_utc_to_bst
 from app.dao.annual_billing_dao import (dao_get_free_sms_fragment_limit_for_year,
                                         dao_get_all_free_sms_fragment_limit,
@@ -40,6 +40,9 @@ def get_yearly_usage_by_month(service_id):
             billing_for_month = get_monthly_billing_by_notification_type(service_id, month, SMS_TYPE)
             if billing_for_month:
                 results.append(_transform_billing_for_month(billing_for_month))
+            letter_billing_for_month = get_monthly_billing_by_notification_type(service_id, month, LETTER_TYPE)
+            if letter_billing_for_month:
+                results.append(_transform_billing_for_month(letter_billing_for_month))
         return json.dumps(results)
 
     except TypeError:
@@ -51,7 +54,7 @@ def get_yearly_billing_usage_summary(service_id):
     try:
         year = int(request.args.get('year'))
         billing_data = get_billing_data_for_financial_year(service_id, year)
-        notification_types = [SMS_TYPE, EMAIL_TYPE]
+        notification_types = [SMS_TYPE, EMAIL_TYPE, LETTER_TYPE]
         response = [
             _get_total_billable_units_and_rate_for_notification_type(billing_data, notification_type)
             for notification_type in notification_types
diff --git a/app/commands.py b/app/commands.py
index 03061f877..f1a3ae690 100644
--- a/app/commands.py
+++ b/app/commands.py
@@ -205,10 +205,15 @@ def populate_monthly_billing(year):
         email_res = get_monthly_billing_by_notification_type(
             service_id, datetime(year, month, 1), EMAIL_TYPE
         )
+        letter_res = get_monthly_billing_by_notification_type(
+            service_id, datetime(year, month, 1), 'letter'
+        )
 
         print("Finished populating data for {} for service id {}".format(month, str(service_id)))
         print('SMS: {}'.format(sms_res.monthly_totals))
         print('Email: {}'.format(email_res.monthly_totals))
+        print('Letter: {}'.format(letter_res.monthly_totals))
+
 
     service_ids = get_service_ids_that_need_billing_populated(
         start_date=datetime(2016, 5, 1), end_date=datetime(2017, 8, 16)
@@ -218,12 +223,13 @@ def populate_monthly_billing(year):
     if year == 2016:
         start = 4
 
-    for service_id in service_ids:
-        print('Starting to populate data for service {}'.format(str(service_id)))
-        print('Starting populating monthly billing for {}'.format(year))
-        for i in range(start, end):
-            print('Population for {}-{}'.format(i, year))
-            populate(service_id, year, i)
+    # for service_id in service_ids:
+    #     print('Starting to populate data for service {}'.format(str(service_id)))
+    #     print('Starting populating monthly billing for {}'.format(year))
+    #     for i in range(start, end):
+    #         print('Population for {}-{}'.format(i, year))
+    #         populate(service_id, year, i)
+    populate('56fa9fd8-61de-4688-8bc7-2908a77367df', year, 10)
 
 
 @notify_command()
diff --git a/app/dao/monthly_billing_dao.py b/app/dao/monthly_billing_dao.py
index ad0014c85..ed30acbbc 100644
--- a/app/dao/monthly_billing_dao.py
+++ b/app/dao/monthly_billing_dao.py
@@ -30,8 +30,8 @@ def get_service_ids_that_need_billing_populated(start_date, end_date):
 @statsd(namespace="dao")
 def create_or_update_monthly_billing(service_id, billing_month):
     start_date, end_date = get_month_start_and_end_date_in_utc(billing_month)
-    _update_monthly_billing(service_id, start_date, end_date, SMS_TYPE)
-    _update_monthly_billing(service_id, start_date, end_date, EMAIL_TYPE)
+    # _update_monthly_billing(service_id, start_date, end_date, SMS_TYPE)
+    # _update_monthly_billing(service_id, start_date, end_date, EMAIL_TYPE)
     _update_monthly_billing(service_id, start_date, end_date, LETTER_TYPE)
 
 
@@ -114,7 +114,7 @@ def get_monthly_billing_by_notification_type(service_id, billing_month, notifica
 
 
 @statsd(namespace="dao")
-def get_billing_data_for_financial_year(service_id, year, notification_types=[SMS_TYPE, EMAIL_TYPE]):
+def get_billing_data_for_financial_year(service_id, year, notification_types=[SMS_TYPE, EMAIL_TYPE, LETTER_TYPE]):
     # Update totals to the latest so we include data for today
     now = convert_utc_to_bst(datetime.utcnow())
     create_or_update_monthly_billing(service_id=service_id, billing_month=now)
diff --git a/app/dao/notification_usage_dao.py b/app/dao/notification_usage_dao.py
index fe00b5145..5e7c535ef 100644
--- a/app/dao/notification_usage_dao.py
+++ b/app/dao/notification_usage_dao.py
@@ -134,9 +134,8 @@ def billing_data_per_month_query(rate, service_id, start_date, end_date, notific
     ).order_by(
         month,
         rate_multiplier()
-    ).all()
-
-    return results
+    )
+    return results.all()
 
 
 def rate_multiplier():
@@ -152,7 +151,7 @@ def billing_letter_data_per_month_query(service_id, start_date, end_date):
     crown = Service.query.get(service_id).crown
     results = db.session.query(
         month.label('month'),
-        func.sum(NotificationHistory.billable_units).label('billing_units'),
+        func.count(NotificationHistory.billable_units).label('billing_units'),
         rate_multiplier().label('rate_multiplier'),
         NotificationHistory.international,
         NotificationHistory.notification_type,
@@ -172,6 +171,5 @@ def billing_letter_data_per_month_query(service_id, start_date, end_date):
     ).order_by(
         month,
         rate_multiplier()
-    ).all()
-
-    return results
+    )
+    return results.all()