diff --git a/app/Repositories/Journal/JournalRepository.php b/app/Repositories/Journal/JournalRepository.php
index fc594b0730..e28d966b43 100644
--- a/app/Repositories/Journal/JournalRepository.php
+++ b/app/Repositories/Journal/JournalRepository.php
@@ -239,6 +239,21 @@ class JournalRepository implements JournalRepositoryInterface
         return TransactionType::TRANSFER === $journal->transactionType->type;
     }
 
+    /**
+     * Mark journal as completed and return it.
+     *
+     * @param TransactionJournal $journal
+     *
+     * @return TransactionJournal
+     */
+    public function markCompleted(TransactionJournal $journal): TransactionJournal
+    {
+        $journal->completed = true;
+        $journal->save();
+
+        return $journal;
+    }
+
     /**
      * @param Transaction $transaction
      *
diff --git a/app/Repositories/Journal/JournalRepositoryInterface.php b/app/Repositories/Journal/JournalRepositoryInterface.php
index 85a7e79d65..e2e89e3e05 100644
--- a/app/Repositories/Journal/JournalRepositoryInterface.php
+++ b/app/Repositories/Journal/JournalRepositoryInterface.php
@@ -125,6 +125,15 @@ interface JournalRepositoryInterface
      */
     public function isTransfer(TransactionJournal $journal): bool;
 
+    /**
+     * Mark journal as completed and return it.
+     *
+     * @param TransactionJournal $journal
+     *
+     * @return TransactionJournal
+     */
+    public function markCompleted(TransactionJournal $journal): TransactionJournal;
+
     /**
      * @param Transaction $transaction
      *