diff --git a/src/iceberg/json_serde.cc b/src/iceberg/json_serde.cc
index c1c3ffb73..3418d4837 100644
--- a/src/iceberg/json_serde.cc
+++ b/src/iceberg/json_serde.cc
@@ -853,6 +853,9 @@ Result<std::unique_ptr<Type>> TypeFromJson(const nlohmann::json& json) {
                                 StringUtils::ParseNumber<int32_t>(match[1].str()));
         ICEBERG_ASSIGN_OR_RAISE(auto scale,
                                 StringUtils::ParseNumber<int32_t>(match[2].str()));
+        if (precision > DecimalType::kMaxPrecision) {
+          return JsonParseError("Invalid decimal type: {}", type_name);
+        }
         return std::make_unique<DecimalType>(precision, scale);
       }
       return JsonParseError("Invalid decimal type: {}", type_name);
diff --git a/src/iceberg/test/schema_json_test.cc b/src/iceberg/test/schema_json_test.cc
index f90a0c2ca..4930d40bf 100644
--- a/src/iceberg/test/schema_json_test.cc
+++ b/src/iceberg/test/schema_json_test.cc
@@ -103,6 +103,13 @@ INSTANTIATE_TEST_SUITE_P(
                 SchemaField::MakeRequired(1, "id", iceberg::int32()),
                 SchemaField::MakeOptional(2, "name", iceberg::string())})}));
 
+TEST(TypeJsonTest, FromJsonOutOfRangeDecimalPrecisionIsParseError) {
+  // Precision beyond the supported maximum must surface as a parse error,
+  // not an uncaught IcebergError from the DecimalType constructor.
+  auto result = TypeFromJson(nlohmann::json::parse("\"decimal(39, 2)\""));
+  EXPECT_THAT(result, IsError(ErrorKind::kJsonParseError));
+}
+
 TEST(TypeJsonTest, FromJsonWithSpaces) {
   auto fixed_json = R"("fixed[ 8 ]")";
   auto fixed_result = TypeFromJson(nlohmann::json::parse(fixed_json));