diff --git a/.changes/unreleased/Under the Hood-20240923-184719.yaml b/.changes/unreleased/Under the Hood-20240923-184719.yaml
new file mode 100644
index 000000000..35e66b90c
--- /dev/null
+++ b/.changes/unreleased/Under the Hood-20240923-184719.yaml	
@@ -0,0 +1,7 @@
+kind: Under the Hood
+body: 'dbt-tests-adapters: Add required begin to microbatch model config to BaseMicrobatch
+  test'
+time: 2024-09-23T18:47:19.171618+01:00
+custom:
+  Author: michelleark
+  Issue: "315"
diff --git a/dbt-tests-adapter/dbt/tests/adapter/incremental/test_incremental_microbatch.py b/dbt-tests-adapter/dbt/tests/adapter/incremental/test_incremental_microbatch.py
index 62c21c556..5bbabbe1b 100644
--- a/dbt-tests-adapter/dbt/tests/adapter/incremental/test_incremental_microbatch.py
+++ b/dbt-tests-adapter/dbt/tests/adapter/incremental/test_incremental_microbatch.py
@@ -22,7 +22,7 @@
 """
 
 _microbatch_model_sql = """
-{{ config(materialized='incremental', incremental_strategy='microbatch', unique_key='id', event_time='event_time', batch_size='day') }}
+{{ config(materialized='incremental', incremental_strategy='microbatch', unique_key='id', event_time='event_time', batch_size='day', begin=modules.datetime.datetime(2020, 1, 1, 0, 0, 0)) }}
 select * from {{ ref('input_model') }}
 """