diff --git a/bin/masspay.py b/bin/masspay.py
index 849cc6e69a..228e719de5 100755
--- a/bin/masspay.py
+++ b/bin/masspay.py
@@ -167,19 +167,21 @@ def compute_output_csvs():
     print("{:>64} {:>7} {:>7}".format(total_gross, total_fees, total_net))
 
 
-def load_statuses():
+def load_statuses_and_refs():
     _status_map = { 'Completed': 'succeeded'
                   , 'Unclaimed': 'pending'
                   , 'Denied': 'failed'
                    } # PayPal -> Gratipay
     statuses = {}
+    refs = {}
     fp = open(REPORT_CSV)
     for line in fp:
         if line.startswith('Transaction ID,Recipient'):
             break
     for rec in csv.reader(fp):
         statuses[rec[1]] = _status_map[rec[5]]
-    return statuses
+        refs[rec[1]] = rec[0]
+    return statuses, refs
 
 
 def post_back_to_gratipay(force=False):
@@ -200,7 +202,7 @@ def post_back_to_gratipay(force=False):
               "did, then rerun with -f.")
         return
 
-    statuses = load_statuses()
+    statuses, refs = load_statuses_and_refs()
 
     nposts = 0
     for username, route_id, email, gross, fee, net, additional_note in csv.reader(open(GRATIPAY_CSV)):
@@ -210,8 +212,15 @@ def post_back_to_gratipay(force=False):
             note += " " + additional_note
         print(note)
         status = statuses[email]
-
-        data = {'amount': '-' + net, 'fee': fee, 'note': note, 'status': status, 'route_id': route_id}
+        ref = refs[email]
+
+        data = {'amount': '-' + net
+                , 'fee': fee
+                , 'note': note
+                , 'status': status
+                , 'ref': ref
+                , 'route_id': route_id
+                }
         try:
             response = requests.post(url, auth=(gratipay_api_key, ''), data=data)
         except IncompleteRead:
diff --git a/tests/py/test_dashboard.py b/tests/py/test_dashboard.py
index d9a6912a53..5b279e7f6d 100644
--- a/tests/py/test_dashboard.py
+++ b/tests/py/test_dashboard.py
@@ -19,6 +19,7 @@ def post_masspays(self, n):
                               , 'fee': '0'
                               , 'note': 'Exchange!'
                               , 'status': 'succeeded'
+                              , 'ref': 'transactionidref'
                               , 'route_id': unicode(self.homer_route.id)
                                }
                             , auth_as='admin'
diff --git a/tests/py/test_record_an_exchange.py b/tests/py/test_record_an_exchange.py
index bb9a8b516a..90b56dd196 100644
--- a/tests/py/test_record_an_exchange.py
+++ b/tests/py/test_record_an_exchange.py
@@ -32,6 +32,9 @@ def record_an_exchange(self, data, make_participants=True):
         if data['route_id'] is None:
             del(data['route_id'])
 
+        if 'ref' not in data:
+            data['ref'] = 'N/A'
+
         return self.client.PxST('/~bob/history/record-an-exchange', data, auth_as='alice')
 
 
@@ -93,21 +96,32 @@ def test_route_should_belong_to_user_else_400(self):
         assert response.code == 400
         assert response.body == "Route doesn't exist"
 
+    def test_no_ref_is_400(self):
+        response = self.record_an_exchange({'amount': '10', 'fee': '0', 'ref': ''})
+        assert response.code == 400
+        assert response.body == "Invalid Reference"
+
+    def test_whitespace_ref_is_400(self):
+        response = self.record_an_exchange({'amount': '10', 'fee': '0', 'ref': '   '})
+        assert response.code == 400
+        assert response.body == "Invalid Reference"
+
     def test_dropping_balance_below_zero_is_allowed_in_this_context(self):
         self.record_an_exchange({'amount': '-10', 'fee': '0'})
         actual = self.db.one("SELECT balance FROM participants WHERE username='bob'")
         assert actual == D('-10.00')
 
     def test_success_records_exchange(self):
-        self.record_an_exchange({'amount': '10', 'fee': '0.50'})
+        self.record_an_exchange({'amount': '10', 'fee': '0.50', 'ref':"605BSOC6G855L15OO"})
         expected = { "amount": D('10.00')
                    , "fee": D('0.50')
                    , "participant": "bob"
                    , "recorder": "alice"
                    , "note": "noted"
+                   , "ref" : "605BSOC6G855L15OO"
                    , "route": ExchangeRoute.from_network(self.bob, 'paypal').id
                     }
-        SQL = "SELECT amount, fee, participant, recorder, note, route " \
+        SQL = "SELECT amount, fee, participant, recorder, note, route, ref " \
               "FROM exchanges"
         actual = self.db.one(SQL, back_as=dict)
         assert actual == expected
diff --git a/www/~/%username/history/record-an-exchange.spt b/www/~/%username/history/record-an-exchange.spt
index 9f708b7e87..dba6c53b13 100644
--- a/www/~/%username/history/record-an-exchange.spt
+++ b/www/~/%username/history/record-an-exchange.spt
@@ -45,13 +45,17 @@ if request.method == 'POST':
     route = ExchangeRoute.from_id(route_id)
     if not route or route.participant.id != participant.id:
         raise Response(400, "Route doesn't exist")
+    
+    ref = request.body['ref'].strip()
+    if not ref:
+        raise Response(400, "Invalid Reference")
 
     with website.db.get_cursor() as cursor:
         cursor.run("""
             INSERT INTO exchanges
-                        (amount, fee, route, participant, recorder, note, status)
-                 VALUES (%s, %s, %s, %s, %s, %s, %s)
-        """, (amount, fee, route_id, participant.username, user.participant.username, note, status))
+                        (amount, fee, route, participant, recorder, note, status, ref)
+                 VALUES (%s, %s, %s, %s, %s, %s, %s, %s)
+        """, (amount, fee, route_id, participant.username, user.participant.username, note, status, ref))
 
         if amount < 0:
             # For payouts, we need to take the fee out of their Gratipay balance.
@@ -96,6 +100,7 @@ if request.method == 'POST':
     </select>
     <br>
     <input name="note" placeholder="note" style="width: 420px" />
+    <input name="ref" placeholder="ref" />
     <h2>Route</h2>
     {% for route in routes %}
         <input type="radio" name="route_id" value="{{ route.id }}">