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/www/~/%username/history/record-an-exchange.spt b/www/~/%username/history/record-an-exchange.spt
index 9f708b7e87..cb25ee56bf 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']
+    if not ref:
+        ref = ""
 
     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 }}">