diff --git a/salary_analytics/rac_check.py b/salary_analytics/rac_check.py
new file mode 100644
index 0000000..90ec681
--- /dev/null
+++ b/salary_analytics/rac_check.py
@@ -0,0 +1,47 @@
+import json
+from datetime import datetime, timezone
+import logging
+
+logger = logging.getLogger(__name__)
+
+class RACCheckService:
+    def __init__(self):
+        self._rac_checks = []  # In-memory storage for demonstration
+
+    def add_rac_check(self, customer_id, account_id, transaction_id, data=None):
+        rac_check = {
+            'id': len(self._rac_checks) + 1,
+            'transaction_id': transaction_id,
+            'customer_id': customer_id,
+            'account_id': account_id,
+            'rac_response': json.dumps(data or {}),
+            'created_at': datetime.now(timezone.utc),
+            'updated_at': datetime.now(timezone.utc)
+        }
+        self._rac_checks.append(rac_check)
+        logger.info(f"Added RAC check: {rac_check}")
+        return rac_check
+
+    def get_all_rac_checks(self):
+        logger.info(f"Retrieving all RAC checks. Count: {len(self._rac_checks)}")
+        return self._rac_checks if self._rac_checks else None
+
+    def get_rac_check(self, customer_id, account_id):
+        for rac_check in self._rac_checks:
+            if rac_check['customer_id'] == customer_id and rac_check['account_id'] == account_id:
+                logger.info(f"Retrieved RAC check for customer_id={customer_id}, account_id={account_id}: {rac_check}")
+                return rac_check
+        logger.error(f"RAC Check for customer_id={customer_id}, account_id={account_id} not found")
+        raise ValueError("RAC Check for customer not found")
+
+    def to_dict(self, rac_check):
+        logger.debug(f"Converting RAC check to dict: {rac_check}")
+        return {
+            "id": str(rac_check["id"]),
+            "transactionId": str(rac_check["transaction_id"]),
+            "customerId": rac_check["customer_id"],
+            "accountId": rac_check["account_id"],
+            "racResponse": json.loads(rac_check["rac_response"]),
+            "createdAt": rac_check["created_at"].isoformat(),
+            "updatedAt": rac_check["updated_at"].isoformat() if rac_check["updated_at"] else None
+        } 
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