diff --git a/app/models.py b/app/models.py
index 0710ca559..7dac89327 100644
--- a/app/models.py
+++ b/app/models.py
@@ -488,6 +488,10 @@ class Service(db.Model, Versioned):
     organisation = db.relationship('Organisation', backref='services')
 
     notes = db.Column(db.Text, nullable=True)
+    purchase_order_number = db.Column(db.String(255), nullable=True)
+    billing_contact_names = db.Column(db.Text, nullable=True)
+    billing_contact_email_addresses = db.Column(db.Text, nullable=True)
+    billing_reference = db.Column(db.String(255), nullable=True)
 
     email_branding = db.relationship(
         'EmailBranding',
diff --git a/migrations/versions/0339_service_billing_details.py b/migrations/versions/0339_service_billing_details.py
new file mode 100644
index 000000000..b1b854d43
--- /dev/null
+++ b/migrations/versions/0339_service_billing_details.py
@@ -0,0 +1,39 @@
+"""
+
+Revision ID: 0339_service_billing_details
+Revises: 0338_add_notes_to_service
+Create Date: 2021-01-20 17:55:46.555460
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '0339_service_billing_details'
+down_revision = '0338_add_notes_to_service'
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('services', sa.Column('billing_contact_email_addresses', sa.Text(), nullable=True))
+    op.add_column('services', sa.Column('billing_contact_names', sa.Text(), nullable=True))
+    op.add_column('services', sa.Column('billing_reference', sa.String(length=255), nullable=True))
+    op.add_column('services', sa.Column('purchase_order_number', sa.String(length=255), nullable=True))
+    op.add_column('services_history', sa.Column('billing_contact_email_addresses', sa.Text(), nullable=True))
+    op.add_column('services_history', sa.Column('billing_contact_names', sa.Text(), nullable=True))
+    op.add_column('services_history', sa.Column('billing_reference', sa.String(length=255), nullable=True))
+    op.add_column('services_history', sa.Column('purchase_order_number', sa.String(length=255), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('services_history', 'purchase_order_number')
+    op.drop_column('services_history', 'billing_reference')
+    op.drop_column('services_history', 'billing_contact_names')
+    op.drop_column('services_history', 'billing_contact_email_addresses')
+    op.drop_column('services', 'purchase_order_number')
+    op.drop_column('services', 'billing_reference')
+    op.drop_column('services', 'billing_contact_names')
+    op.drop_column('services', 'billing_contact_email_addresses')
+    # ### end Alembic commands ###
diff --git a/tests/app/service/test_rest.py b/tests/app/service/test_rest.py
index 1f50b6cae..6aac914ea 100644
--- a/tests/app/service/test_rest.py
+++ b/tests/app/service/test_rest.py
@@ -248,6 +248,9 @@ def test_get_service_by_id(admin_request, sample_service):
     assert set(json_resp['data'].keys()) == {
         'active',
         'allowed_broadcast_provider',
+        'billing_contact_email_addresses',
+        'billing_contact_names',
+        'billing_reference',
         'consent_to_research',
         'contact_link',
         'count_as_live',
@@ -266,6 +269,7 @@ def test_get_service_by_id(admin_request, sample_service):
         'organisation_type',
         'permissions',
         'prefix_sms',
+        'purchase_order_number',
         'rate_limit',
         'research_mode',
         'restricted',