diff --git a/app/main/views/dashboard.py b/app/main/views/dashboard.py
index 39fe0eb5f..77472d6f8 100644
--- a/app/main/views/dashboard.py
+++ b/app/main/views/dashboard.py
@@ -413,24 +413,24 @@ def get_monthly_usage_breakdown(year, free_sms_fragment_limit, monthly_usage):
         previous_cumulative = cumulative
         monthly_usage = get_sum_billing_units(sms, month)
         cumulative += monthly_usage
-        breakdown = get_free_paid_breakdown_for_month(
+        sms_breakdown = get_free_paid_breakdown_for_month(
             free_sms_fragment_limit, cumulative, previous_cumulative,
             [billing_month for billing_month in sms if billing_month['month'] == month]
         )
 
         letter_units_for_month = [x for x in letters if x['month'] == month]
-        letter_billing = format_letter_details_for_month(letter_units_for_month)
+        letter_breakdown = format_letter_details_for_month(letter_units_for_month)
 
-        letter_total = 0
-        for x in letter_billing:
-            letter_total += x.cost
+        letter_cost = 0
+        for x in letter_breakdown:
+            letter_cost += x.cost
         yield {
-            'name': month,
-            'letter_total': letter_total,
-            'letters': letter_billing,
-            'sms_paid_count': breakdown['paid'],
-            'sms_free_count': breakdown['free'],
-            'sms_rate': breakdown['sms_rate'],
+            'month': month,
+            'letter_cost': letter_cost,
+            'letter_breakdown': letter_breakdown,
+            'sms_charged': sms_breakdown['paid'],
+            'sms_free_allowance_used': sms_breakdown['free'],
+            'sms_rate': sms_breakdown['sms_rate'],
         }
 
 
@@ -445,7 +445,7 @@ def format_letter_details_for_month(letter_units_for_month):
     postage_order = {'first class': 0, 'second class': 1, 'international': 2}
     letter_units_for_month.sort(key=lambda x: (postage_order[x['postage']], x['rate']))
 
-    LetterDetails = namedtuple('LetterDetails', ['billing_units', 'rate', 'cost', 'postage_description'])
+    LetterDetails = namedtuple('LetterDetails', ['sent', 'rate', 'cost', 'postage_description'])
 
     # Aggregate the rows for international letters which have the same rate
     result = []
@@ -453,7 +453,7 @@ def format_letter_details_for_month(letter_units_for_month):
         rate_group = list(rate_group)
 
         letter_details = LetterDetails(
-            billing_units=sum(x['billing_units'] for x in rate_group),
+            sent=sum(x['billing_units'] for x in rate_group),
             rate=rate_group[0]['rate'],
             cost=(sum(x['billing_units'] for x in rate_group) * rate_group[0]['rate']),
             postage_description=rate_group[0]['postage']
diff --git a/app/templates/views/usage.html b/app/templates/views/usage.html
index a9bd086b0..59fd31979 100644
--- a/app/templates/views/usage.html
+++ b/app/templates/views/usage.html
@@ -83,7 +83,7 @@
 
       {% if months %}
         <div class="dashboard-table usage-table body-copy-table">
-          {% call(month, row_index) list_table(
+          {% call(item, row_index) list_table(
             months,
             caption="Total spend",
             caption_visible=False,
@@ -95,29 +95,29 @@
             field_headings_visible=True
           ) %}
             {% call row_heading() %}
-              {{ month.name }}
+              {{ item.month }}
             {% endcall %}
             {% call field(align='left') %}
               {{ big_number(
-                (month.sms_rate * month.sms_paid_count) + month.letter_total,
+                (item.sms_rate * item.sms_charged) + item.letter_cost,
                 currency="£",
                 smallest=True
               ) }}
               <ul>
-              {% if month.sms_free_count %}
-                <li class="tabular-numbers">{{ month.sms_free_count|format_thousands }} free {{ month.sms_free_count|message_count_label('sms', suffix='') }}</li>
+              {% if item.sms_free_allowance_used %}
+                <li class="tabular-numbers">{{ item.sms_free_allowance_used|format_thousands }} free {{ item.sms_free_count|message_count_label('sms', suffix='') }}</li>
               {% endif %}
-              {% if month.sms_paid_count %}
-                <li class="tabular-numbers">{{ month.sms_paid_count|message_count('sms') }} at
-                {{- ' {:.2f}p'.format(month.sms_rate * 100) }}</li>
+              {% if item.sms_charged %}
+                <li class="tabular-numbers">{{ item.sms_charged|message_count('sms') }} at
+                {{- ' {:.2f}p'.format(item.sms_rate * 100) }}</li>
               {% endif %}
-              {% for letter in month.letters%}
-                {% if letter.billing_units %}
-                  <li class="tabular-numbers">{{ "{:,} {}".format(letter.billing_units, letter.postage_description) }} {{ letter.billing_units|message_count_label('letter', suffix='') }} at
+              {% for letter in item.letter_breakdown %}
+                {% if letter.sent %}
+                  <li class="tabular-numbers">{{ "{:,} {}".format(letter.sent, letter.postage_description) }} {{ letter.sent|message_count_label('letter', suffix='') }} at
                   {{ letter.rate | format_number_in_pounds_as_currency }}</li>
                 {% endif %}
               {% endfor %}
-              {% if not (month.sms_free_count or month.sms_paid_count or month.letters) %}
+              {% if not (item.sms_free_allowance_used or item.sms_charged or item.letter_breakdown) %}
                 <li aria-hidden="true">–</li>
               {% endif %}
               </ul>
diff --git a/tests/app/main/views/test_dashboard.py b/tests/app/main/views/test_dashboard.py
index 8271b2397..7e486feda 100644
--- a/tests/app/main/views/test_dashboard.py
+++ b/tests/app/main/views/test_dashboard.py
@@ -1602,100 +1602,100 @@ def test_get_monthly_usage_breakdown(now, expected_number_of_months):
 
         assert list(breakdown) == [
             {
-                'sms_free_count': 100000,
-                'name': 'April',
-                'sms_paid_count': 0,
+                'sms_free_allowance_used': 100000,
+                'month': 'April',
+                'sms_charged': 0,
                 'sms_rate': 1.65,
-                'letter_total': 0,
-                'letters': []
+                'letter_cost': 0,
+                'letter_breakdown': []
             },
             {
-                'sms_free_count': 100000,
-                'name': 'May',
-                'sms_paid_count': 0,
+                'sms_free_allowance_used': 100000,
+                'month': 'May',
+                'sms_charged': 0,
                 'sms_rate': 1.65,
-                'letter_total': 0,
-                'letters': []
+                'letter_cost': 0,
+                'letter_breakdown': []
             },
             {
-                'sms_free_count': 50000,
-                'name': 'June',
-                'sms_paid_count': 50000,
+                'sms_free_allowance_used': 50000,
+                'month': 'June',
+                'sms_charged': 50000,
                 'sms_rate': 1.71,
-                'letter_total': 0,
-                'letters': []
+                'letter_cost': 0,
+                'letter_breakdown': []
             },
             {
-                'sms_free_count': 0,
-                'name': 'July',
-                'sms_paid_count': 0,
+                'sms_free_allowance_used': 0,
+                'month': 'July',
+                'sms_charged': 0,
                 'sms_rate': 0,
-                'letter_total': 0,
-                'letters': []
+                'letter_cost': 0,
+                'letter_breakdown': []
             },
             {
-                'sms_free_count': 0,
-                'name': 'August',
-                'sms_paid_count': 0,
+                'sms_free_allowance_used': 0,
+                'month': 'August',
+                'sms_charged': 0,
                 'sms_rate': 0,
-                'letter_total': 0,
-                'letters': []
+                'letter_cost': 0,
+                'letter_breakdown': []
             },
             {
-                'sms_free_count': 0,
-                'name': 'September',
-                'sms_paid_count': 0,
+                'sms_free_allowance_used': 0,
+                'month': 'September',
+                'sms_charged': 0,
                 'sms_rate': 0,
-                'letter_total': 0,
-                'letters': []
+                'letter_cost': 0,
+                'letter_breakdown': []
             },
             {
-                'sms_free_count': 0,
-                'name': 'October',
-                'sms_paid_count': 0,
+                'sms_free_allowance_used': 0,
+                'month': 'October',
+                'sms_charged': 0,
                 'sms_rate': 0,
-                'letter_total': 0,
-                'letters': []
+                'letter_cost': 0,
+                'letter_breakdown': []
             },
             {
-                'sms_free_count': 0,
-                'name': 'November',
-                'sms_paid_count': 0,
+                'sms_free_allowance_used': 0,
+                'month': 'November',
+                'sms_charged': 0,
                 'sms_rate': 0,
-                'letter_total': 0,
-                'letters': []
+                'letter_cost': 0,
+                'letter_breakdown': []
             },
             {
-                'sms_free_count': 0,
-                'name': 'December',
-                'sms_paid_count': 0,
+                'sms_free_allowance_used': 0,
+                'month': 'December',
+                'sms_charged': 0,
                 'sms_rate': 0,
-                'letter_total': 0,
-                'letters': []
+                'letter_cost': 0,
+                'letter_breakdown': []
             },
             {
-                'sms_free_count': 0,
-                'name': 'January',
-                'sms_paid_count': 0,
+                'sms_free_allowance_used': 0,
+                'month': 'January',
+                'sms_charged': 0,
                 'sms_rate': 0,
-                'letter_total': 0,
-                'letters': []
+                'letter_cost': 0,
+                'letter_breakdown': []
             },
             {
-                'sms_free_count': 0,
-                'name': 'February',
-                'sms_paid_count': 2000,
+                'sms_free_allowance_used': 0,
+                'month': 'February',
+                'sms_charged': 2000,
                 'sms_rate': 1.71,
-                'letter_total': 0,
-                'letters': []
+                'letter_cost': 0,
+                'letter_breakdown': []
             },
             {
-                'sms_free_count': 0,
-                'name': 'March',
-                'sms_paid_count': 0,
+                'sms_free_allowance_used': 0,
+                'month': 'March',
+                'sms_charged': 0,
                 'sms_rate': 0,
-                'letter_total': 0,
-                'letters': []
+                'letter_cost': 0,
+                'letter_breakdown': []
             },
         ][:expected_number_of_months]