diff --git a/src/node/transaction.h b/src/node/transaction.h
--- a/src/node/transaction.h
+++ b/src/node/transaction.h
@@ -6,6 +6,7 @@
 #define BITCOIN_NODE_TRANSACTION_H
 
 #include <attributes.h>
+#include <feerate.h>
 #include <primitives/transaction.h>
 #include <util/error.h>
 
@@ -13,6 +14,15 @@
 struct NodeContext;
 struct TxId;
 
+/**
+ * Maximum fee rate for sendrawtransaction and testmempoolaccept RPC calls.
+ * Also used by the GUI when broadcasting a completed PSBT.
+ * By default, a transaction with a fee rate higher than this will be rejected
+ * by these RPCs and the GUI. This can be overridden with the maxfeerate
+ * argument.
+ */
+static const CFeeRate DEFAULT_MAX_RAW_TX_FEE_RATE{COIN / 10};
+
 /**
  * Submit a transaction to the mempool and (optionally) relay it to all P2P
  * peers.
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -42,13 +42,6 @@
 
 #include <univalue.h>
 
-/**
- * Maximum fee rate for sendrawtransaction and testmempoolaccept.
- * By default, a transaction with a fee rate higher than this will be rejected
- * by the RPCs. This can be overridden with the maxfeerate argument.
- */
-static const CFeeRate DEFAULT_MAX_RAW_TX_FEE_RATE{COIN / 10};
-
 static void TxToJSON(const CTransaction &tx, const BlockHash &hashBlock,
                      UniValue &entry) {
     // Call into TxToUniv() in bitcoin-common to decode the transaction hex.