diff --git a/server/data/fec/contributions.py b/server/data/fec/contributions.py
index 4e0168e..f8d9082 100644
--- a/server/data/fec/contributions.py
+++ b/server/data/fec/contributions.py
@@ -330,10 +330,11 @@ def from_data(cls, value: t.Any) -> "ContributionSummary":
             zip_code=v.get_str(data, "zip_code"),
             total=v.get_convert_decimal(data, "total"),
             by_party={
-                party: Decimal(amount) for party, amount in by_party_data.items()
+                party: v.validate_convert_decimal(amount)
+                for party, amount in by_party_data.items()
             },
             by_committee={
-                committee: Decimal(amount)
+                committee: v.validate_convert_decimal(amount)
                 for committee, amount in by_committee_data.items()
             },
         )
diff --git a/server/data/fec/test_contributions.py b/server/data/fec/test_contributions.py
index 00d3dd9..1aea79b 100644
--- a/server/data/fec/test_contributions.py
+++ b/server/data/fec/test_contributions.py
@@ -254,3 +254,25 @@ def test_add(self):
         self.assertEqual(summary.by_committee.get("C12345"), Decimal(10))
         self.assertEqual(summary.by_committee.get("C67890"), Decimal(20))
         self.assertEqual(summary.by_committee.get("CABCDE"), Decimal(50))
+
+    def test_from_data_valid(self):
+        data = {
+            "fuzzy_id": "SMITH-JOHN-98101",
+            "name": "Smith, John",
+            "zip_code": "98101",
+            "total": "80",
+            "by_party": {Party.DEMOCRAT: "30", Party.GREEN: "50"},
+            "by_committee": {"C12345": "10", "C67890": "20", "CABCDE": "50"},
+        }
+        summary = cont.ContributionSummary.from_data(data)
+        self.assertEqual(summary.fuzzy_id, "SMITH-JOHN-98101")
+        self.assertEqual(summary.name, "Smith, John")
+        self.assertEqual(summary.zip_code, "98101")
+        self.assertEqual(summary.total, Decimal(80))
+        self.assertEqual(len(summary.by_party), 2)
+        self.assertEqual(summary.by_party.get(Party.DEMOCRAT), Decimal(30))
+        self.assertEqual(summary.by_party.get(Party.GREEN), Decimal(50))
+        self.assertEqual(len(summary.by_committee), 3)
+        self.assertEqual(summary.by_committee.get("C12345"), Decimal(10))
+        self.assertEqual(summary.by_committee.get("C67890"), Decimal(20))
+        self.assertEqual(summary.by_committee.get("CABCDE"), Decimal(50))