diff --git a/src/test/utxocommit_tests.cpp b/src/test/utxocommit_tests.cpp
--- a/src/test/utxocommit_tests.cpp
+++ b/src/test/utxocommit_tests.cpp
@@ -170,4 +170,35 @@
     LogPrintf("ECMH generation from cursor done\n");
 }
 
+BOOST_AUTO_TEST_CASE(utxo_commit_combine) {
+
+    const COutPoint op1 = RandomOutpoint();
+    const COutPoint op2 = RandomOutpoint();
+    const Coin c1 = RandomCoin();
+    const Coin c2 = RandomCoin();
+
+    CUtxoCommit uc1, uc2, uc3;
+
+    // Test combining empty commits
+    uc1.Add(uc2);
+    BOOST_CHECK(uc1 == CUtxoCommit());
+
+    // Test combining simple commitments
+    uc1.Add(op1, c1);
+    uc2.Add(op2, c2);
+    uc1.Add(uc2);
+
+    uc3.Add(op1, c1);
+    uc3.Add(op2, c2);
+
+    BOOST_CHECK(uc1 == uc3);
+
+    // Test combining commitments with removed UTXOs
+    uc3.Clear();
+    uc3.Remove(op1, c1);
+    uc1.Add(uc3);
+
+    BOOST_CHECK(uc1 == uc2);
+}
+
 BOOST_AUTO_TEST_SUITE_END()