diff --git a/src/monopoly/pipeline.py b/src/monopoly/pipeline.py
index 6950f6ac..37dba6a4 100644
--- a/src/monopoly/pipeline.py
+++ b/src/monopoly/pipeline.py
@@ -1,5 +1,6 @@
 import csv
 import logging
+import re
 from pathlib import Path
 from typing import Optional, Type
 
@@ -8,6 +9,7 @@
 
 from monopoly.banks import BankBase
 from monopoly.config import DateOrder
+from monopoly.constants.date import DateFormats
 from monopoly.generic import GenericBank, GenericStatementHandler
 from monopoly.handler import StatementHandler
 from monopoly.pdf import PdfPage, PdfParser
@@ -73,18 +75,27 @@ def convert_date(transaction: Transaction, transaction_date_order: DateOrder):
             e.g. if the statement month is Jan/Feb 2024, transactions from
             Oct/Nov/Dec should be attributed to the previous year.
             """
-            if str(statement_date.year) not in transaction.date:
-                transaction.date += f" {statement_date.year}"
+            # do not include year if transaction already includes date
+            has_year = bool(re.search(DateFormats.YYYY, transaction.date))
+
+            if not has_year and str(statement_date.year) not in transaction.date:
+                transaction.date = f"{transaction.date} {statement_date.year}"
+
             parsed_date = parse(
-                transaction.date,
-                settings=transaction_date_order.settings,
+                transaction.date, settings=transaction_date_order.settings
             )
-            if parsed_date:
-                if statement_date.month in (1, 2) and parsed_date.month > 2:
-                    parsed_date = parsed_date.replace(year=parsed_date.year - 1)
 
-                return parsed_date.isoformat()[:10]
-            raise RuntimeError("Could not convert date")
+            if not parsed_date:
+                raise RuntimeError("Could not convert date")
+
+            if (
+                statement_date.month in (1, 2)
+                and parsed_date.month > 2
+                and not has_year
+            ):
+                parsed_date = parsed_date.replace(year=parsed_date.year - 1)
+
+            return parsed_date.isoformat()[:10]
 
         logger.debug("Transforming dates to ISO 8601")
 
diff --git a/tests/integration/banks/test_date_handling.py b/tests/integration/banks/test_date_handling.py
index c984cfed..8d218669 100644
--- a/tests/integration/banks/test_date_handling.py
+++ b/tests/integration/banks/test_date_handling.py
@@ -5,6 +5,27 @@
 from monopoly.statements import BaseStatement, Transaction
 
 
+def test_transform_yyyy_transaction(statement: BaseStatement):
+    raw_transactions = [
+        Transaction(
+            transaction_date="01/12/2023",
+            description="FAIRPRICE FINEST",
+            amount="18.49",
+        ),
+    ]
+    statement.transactions = raw_transactions
+    statement.statement_date = datetime(2024, 1, 1)
+    statement.config.transaction_date_order = DateOrder("DMY")
+    transformed_transactions = Pipeline.transform(statement)
+    expected_transactions = [
+        Transaction(
+            transaction_date="2023-12-01", description="FAIRPRICE FINEST", amount=18.49
+        ),
+    ]
+
+    assert transformed_transactions == expected_transactions
+
+
 def test_transform_cross_year(statement: BaseStatement):
     raw_transactions = [
         Transaction(