diff --git a/core/dbt/artifacts/resources/v1/config.py b/core/dbt/artifacts/resources/v1/config.py
index 5a7977c0958..79529aa9e99 100644
--- a/core/dbt/artifacts/resources/v1/config.py
+++ b/core/dbt/artifacts/resources/v1/config.py
@@ -1,5 +1,6 @@
 import re
 from dataclasses import dataclass, field
+from datetime import datetime
 from typing import Any, Dict, List, Optional, Union
 
 from mashumaro.jsonschema.annotations import Pattern
@@ -82,7 +83,7 @@ class NodeConfig(NodeAndTestConfig):
     incremental_strategy: Optional[str] = None
     batch_size: Any = None
     lookback: Any = 0
-    begin: Any = None
+    begin: Union[datetime, Any] = None
     persist_docs: Dict[str, Any] = field(default_factory=dict)
     post_hook: List[Hook] = field(
         default_factory=list,
diff --git a/tests/functional/microbatch/test_microbatch_config_validation.py b/tests/functional/microbatch/test_microbatch_config_validation.py
index 86114d529b6..6a27eb97fad 100644
--- a/tests/functional/microbatch/test_microbatch_config_validation.py
+++ b/tests/functional/microbatch/test_microbatch_config_validation.py
@@ -11,6 +11,21 @@
 select * from {{ ref('input_model') }}
 """
 
+valid_microbatch_model_no_config_sql = """
+select * from {{ ref('input_model') }}
+"""
+
+valid_microbatch_model_config_yml = """
+models:
+  - name: microbatch
+    config:
+      materialized: incremental
+      incremental_strategy: microbatch
+      batch_size: day
+      event_time: event_time
+      begin: 2020-01-01
+"""
+
 missing_event_time_microbatch_model_sql = """
 {{ config(materialized='incremental', incremental_strategy='microbatch', batch_size='day') }}
 select * from {{ ref('input_model') }}
@@ -55,7 +70,7 @@
 """
 
 
-class BaseMicrobatchTest:
+class BaseMicrobatchTestParseError:
     @pytest.fixture(scope="class")
     def models(self):
         return {}
@@ -66,7 +81,17 @@ def test_parsing_error_raised(self, project):
             run_dbt(["parse"])
 
 
-class TestMissingEventTimeMicrobatch(BaseMicrobatchTest):
+class BaseMicrobatchTestNoError:
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {}
+
+    @mock.patch.dict(os.environ, {"DBT_EXPERIMENTAL_MICROBATCH": "True"})
+    def test_parsing_error_not_raised(self, project):
+        run_dbt(["parse"])
+
+
+class TestMissingEventTimeMicrobatch(BaseMicrobatchTestParseError):
     @pytest.fixture(scope="class")
     def models(self):
         return {
@@ -75,7 +100,7 @@ def models(self):
         }
 
 
-class TestInvalidEventTimeMicrobatch(BaseMicrobatchTest):
+class TestInvalidEventTimeMicrobatch(BaseMicrobatchTestParseError):
     @pytest.fixture(scope="class")
     def models(self):
         return {
@@ -84,7 +109,7 @@ def models(self):
         }
 
 
-class TestMissingBeginMicrobatch(BaseMicrobatchTest):
+class TestMissingBeginMicrobatch(BaseMicrobatchTestParseError):
     @pytest.fixture(scope="class")
     def models(self):
         return {
@@ -93,7 +118,7 @@ def models(self):
         }
 
 
-class TestInvaliBeginMicrobatch(BaseMicrobatchTest):
+class TestInvaliBeginMicrobatch(BaseMicrobatchTestParseError):
     @pytest.fixture(scope="class")
     def models(self):
         return {
@@ -102,7 +127,7 @@ def models(self):
         }
 
 
-class TestMissingBatchSizeMicrobatch(BaseMicrobatchTest):
+class TestMissingBatchSizeMicrobatch(BaseMicrobatchTestParseError):
     @pytest.fixture(scope="class")
     def models(self):
         return {
@@ -111,7 +136,7 @@ def models(self):
         }
 
 
-class TestInvalidBatchSizeMicrobatch(BaseMicrobatchTest):
+class TestInvalidBatchSizeMicrobatch(BaseMicrobatchTestParseError):
     @pytest.fixture(scope="class")
     def models(self):
         return {
@@ -120,10 +145,20 @@ def models(self):
         }
 
 
-class TestInvalidInputEventTimeMicrobatch(BaseMicrobatchTest):
+class TestInvalidInputEventTimeMicrobatch(BaseMicrobatchTestParseError):
     @pytest.fixture(scope="class")
     def models(self):
         return {
             "input_model.sql": invalid_event_time_input_model_sql,
             "microbatch.sql": valid_microbatch_model_sql,
         }
+
+
+class TestValidBeginMicrobatch(BaseMicrobatchTestNoError):
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "input_model.sql": valid_input_model_sql,
+            "microbatch.sql": valid_microbatch_model_no_config_sql,
+            "schema.yml": valid_microbatch_model_config_yml,
+        }