diff --git a/doc/release-notes.md b/doc/release-notes.md
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -3,3 +3,9 @@
   <https://download.bitcoinabc.org/0.21.10/>
 
 This release includes the following features and fixes:
+
+RPC changes
+-----------
+The RPC `joinpsbts` will shuffle the order of the inputs and outputs of the resulting joined psbt.
+Previously inputs and outputs were added in the order that the PSBTs were provided which makes correlating inputs to outputs extremely easy.
+
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -18,6 +18,7 @@
 #include <node/transaction.h>
 #include <primitives/transaction.h>
 #include <psbt.h>
+#include <random.h>
 #include <rpc/blockchain.h>
 #include <rpc/rawtransaction_util.h>
 #include <rpc/server.h>
@@ -35,6 +36,7 @@
 #include <validationinterface.h>
 
 #include <cstdint>
+#include <numeric>
 
 #include <univalue.h>
 
@@ -1780,8 +1782,33 @@
         merged_psbt.unknown.insert(psbt.unknown.begin(), psbt.unknown.end());
     }
 
+    // Generate list of shuffled indices for shuffling inputs and outputs of the
+    // merged PSBT
+    std::vector<int> input_indices(merged_psbt.inputs.size());
+    std::iota(input_indices.begin(), input_indices.end(), 0);
+    std::vector<int> output_indices(merged_psbt.outputs.size());
+    std::iota(output_indices.begin(), output_indices.end(), 0);
+
+    // Shuffle input and output indicies lists
+    Shuffle(input_indices.begin(), input_indices.end(), FastRandomContext());
+    Shuffle(output_indices.begin(), output_indices.end(), FastRandomContext());
+
+    PartiallySignedTransaction shuffled_psbt;
+    shuffled_psbt.tx = CMutableTransaction();
+    shuffled_psbt.tx->nVersion = merged_psbt.tx->nVersion;
+    shuffled_psbt.tx->nLockTime = merged_psbt.tx->nLockTime;
+    for (int i : input_indices) {
+        shuffled_psbt.AddInput(merged_psbt.tx->vin[i], merged_psbt.inputs[i]);
+    }
+    for (int i : output_indices) {
+        shuffled_psbt.AddOutput(merged_psbt.tx->vout[i],
+                                merged_psbt.outputs[i]);
+    }
+    shuffled_psbt.unknown.insert(merged_psbt.unknown.begin(),
+                                 merged_psbt.unknown.end());
+
     CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
-    ssTx << merged_psbt;
+    ssTx << shuffled_psbt;
     return EncodeBase64((uint8_t *)ssTx.data(), ssTx.size());
 }
 
diff --git a/test/functional/rpc_psbt.py b/test/functional/rpc_psbt.py
--- a/test/functional/rpc_psbt.py
+++ b/test/functional/rpc_psbt.py
@@ -315,6 +315,16 @@
         assert_raises_rpc_error(-8,
                                 "At least two PSBTs are required to join PSBTs.", self.nodes[1].joinpsbts, [psbt2])
 
+        # Check that joining shuffles the inputs and outputs
+        # 10 attempts should be enough to get a shuffled join
+        shuffled = False
+        for i in range(0, 10):
+            shuffled_joined = self.nodes[0].joinpsbts([psbt, psbt2])
+            shuffled |= joined != shuffled_joined
+            if shuffled:
+                break
+        assert shuffled
+
         # Newly created PSBT needs UTXOs and updating
         addr = self.nodes[1].getnewaddress("")
         txid = self.nodes[0].sendtoaddress(addr, 7)