diff --git a/boot/modules/acquiring/src/main/java/com/klaro/acquirecore/acquiring/repository/TxRepository.java b/boot/modules/acquiring/src/main/java/com/klaro/acquirecore/acquiring/repository/TxRepository.java
new file mode 100644
index 0000000..b52bd93
--- /dev/null
+++ b/boot/modules/acquiring/src/main/java/com/klaro/acquirecore/acquiring/repository/TxRepository.java
@@ -0,0 +1,13 @@
+package com.klaro.acquirecore.acquiring.repository;
+
+import com.klaro.acquirecore.acquiring.dto.TxRequest;
+
+/**
+ * 거래 DB 접근 인터페이스 (스텁)
+ * Legacy: mg_recv_svc.pgc의 DB 처리 부분
+ */
+public interface TxRepository {
+
+    void save(TxRequest request);
+    TxRequest findByTraceNo(String traceNo);
+}