diff --git a/models/reporting/xero/schema.yaml b/models/reporting/xero/schema.yaml
index a0d92c0..0067437 100644
--- a/models/reporting/xero/schema.yaml
+++ b/models/reporting/xero/schema.yaml
@@ -1139,7 +1139,49 @@ models:
         data_type: text
         description: | 
           A fee category, one of out of booking_fees, listing_fees, 
-          verification_fees.
+          verification_fees, waiver fees.
+
+      - name: fees_invoiced_in_gbp
+        data_type: numeric
+        description: The total sum of invoiced fees.
+
+      - name: fees_credited_in_gbp
+        data_type: numeric
+        description: The total sum of credited fees.
+
+      - name: net_fees_in_gbp
+        data_type: numeric
+        description: | 
+          Net fees are calculated by subtracting credited fees from invoiced
+          fees. It might be the case that net fees are negative in some month,
+          if it happens to be that we have given back to customers more than we
+          have invoiced them.
+
+  - name: xero__net_fees_by_deal
+    description: |
+      A summary aggregation table showing the total raw and net fees by month
+      and year, dedicated for deal attribution.
+
+      Information comes from both Invoices and Credit notes.
+
+      Only documents in statuses ('PAID', 'AUTHORISED') are kept.
+
+      Net fees get computed by subtracting credited amounts from invoiced 
+      amounts.
+
+    columns:
+      - name: issued_year
+        data_type: numeric
+        description: The issuing year of the aggregated documents.
+
+      - name: issued_month
+        data_type: numeric
+        description: The issuing month of the aggregated documents.
+
+      - name: id_deal
+        data_type: text
+        description: | 
+          A fee category per deal.
 
       - name: fees_invoiced_in_gbp
         data_type: numeric
diff --git a/models/reporting/xero/xero__net_fees_by_deal.sql b/models/reporting/xero/xero__net_fees_by_deal.sql
new file mode 100644
index 0000000..19e5698
--- /dev/null
+++ b/models/reporting/xero/xero__net_fees_by_deal.sql
@@ -0,0 +1,43 @@
+{% set relevant_document_statuses = "('PAID', 'AUTHORISED')" %}
+
+with
+    xero__invoices as (select * from {{ ref("xero__invoices") }}),
+    xero__credit_notes as (select * from {{ ref("xero__credit_notes") }}),
+    xero__contacts as (select * from {{ ref("xero__contacts") }}),
+    fees_invoiced as (
+        select
+            cast(
+                date_trunc('month', i.invoice_issued_date_utc) as date
+            ) as invoice_issued_year_month,
+            c.id_deal,
+            sum(i.total_amount_wo_tax_in_gbp) as fees_invoiced
+        from xero__invoices i
+        left join xero__contacts c on i.id_contact = c.id_contact
+        where i.invoice_status in {{ relevant_document_statuses }}
+        group by date_trunc('month', i.invoice_issued_date_utc), c.id_deal
+    ),
+    fees_credited as (
+        select
+            cast(
+                date_trunc('month', cn.credit_note_issued_at_utc) as date
+            ) as credit_note_issued_year_month,
+            c.id_deal,
+            sum(cn.subtotal_in_gbp) as fees_credited
+        from xero__credit_notes cn
+        left join xero__contacts c on cn.id_contact = c.id_contact
+        where cn.credit_note_status in {{ relevant_document_statuses }}
+        group by date_trunc('month', cn.credit_note_issued_at_utc), c.id_deal
+    )
+select
+    coalesce(
+        i.invoice_issued_year_month, c.credit_note_issued_year_month
+    ) as issued_year_month,
+    coalesce(i.id_deal, c.id_deal) as id_deal,
+    coalesce(i.fees_invoiced, 0) as fees_invoiced_in_gbp,
+    coalesce(c.fees_credited, 0) as fees_credited_in_gbp,
+    (coalesce(i.fees_invoiced, 0) - coalesce(c.fees_credited, 0)) as net_fees_in_gbp
+from fees_invoiced i
+full outer join
+    fees_credited c
+    on i.invoice_issued_year_month = c.credit_note_issued_year_month
+    and i.id_deal = c.id_deal