diff --git a/rust/tw_bitcoin/src/entry.rs b/rust/tw_bitcoin/src/entry.rs
index 5d4ef7a2fd5..2200b9e8eb6 100644
--- a/rust/tw_bitcoin/src/entry.rs
+++ b/rust/tw_bitcoin/src/entry.rs
@@ -239,7 +239,7 @@ impl BitcoinEntry {
                 })
                 .collect(),
             input_selector: proto.input_selector,
-            weight_base: proto.sat_vb,
+            weight_base: proto.fee_per_vb,
             change_script_pubkey,
             disable_change_output: proto.disable_change_output,
         };
@@ -301,7 +301,7 @@ impl BitcoinEntry {
                     script_pubkey: Cow::Borrowed(&out.script_pubkey),
                 })
                 .collect(),
-            weight_base: proto.sat_vb,
+            weight_base: proto.fee_per_vb,
         };
 
         let utxo_serialized = tw_utxo::compiler::Compiler::compile(utxo_preserializtion);
diff --git a/rust/tw_bitcoin/src/modules/legacy/build_and_sign.rs b/rust/tw_bitcoin/src/modules/legacy/build_and_sign.rs
index e00b4dcbf1d..9a95cb5449a 100644
--- a/rust/tw_bitcoin/src/modules/legacy/build_and_sign.rs
+++ b/rust/tw_bitcoin/src/modules/legacy/build_and_sign.rs
@@ -137,7 +137,7 @@ pub fn taproot_build_and_sign_transaction(
         // The input selector, as dictated by the `TransactionPlan` of the
         // legacy protobuf structure.
         input_selector,
-        sat_vb: legacy.byte_fee as u64,
+        fee_per_vb: legacy.byte_fee as u64,
         change_output: Some(
             // The change output (return to myself).
             Proto::Output {
diff --git a/rust/tw_bitcoin/src/tests/brc20.rs b/rust/tw_bitcoin/src/tests/brc20.rs
index b9ec51b7740..35daa42a298 100644
--- a/rust/tw_bitcoin/src/tests/brc20.rs
+++ b/rust/tw_bitcoin/src/tests/brc20.rs
@@ -61,7 +61,7 @@ fn coin_entry_sign_brc20_commit_reveal_transfer() {
         inputs: vec![tx1],
         outputs: vec![out1, out2],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: 0,
+        fee_per_vb: 0,
         change_output: Default::default(),
         disable_change_output: true,
     };
@@ -124,7 +124,7 @@ fn coin_entry_sign_brc20_commit_reveal_transfer() {
         inputs: vec![tx1],
         outputs: vec![out1],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: 0,
+        fee_per_vb: 0,
         change_output: Default::default(),
         disable_change_output: true,
     };
diff --git a/rust/tw_bitcoin/src/tests/free_estimate.rs b/rust/tw_bitcoin/src/tests/free_estimate.rs
index 80d5b6b9114..3fb1b12c6ac 100644
--- a/rust/tw_bitcoin/src/tests/free_estimate.rs
+++ b/rust/tw_bitcoin/src/tests/free_estimate.rs
@@ -33,7 +33,7 @@ fn p2pkh_fee_estimate() {
         inputs: vec![],
         outputs: vec![],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: SAT_VB,
+        fee_per_vb: SAT_VB,
         change_output: Default::default(),
         disable_change_output: true,
     };
@@ -92,7 +92,7 @@ fn p2wpkh_fee_estimate() {
         inputs: vec![],
         outputs: vec![],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: SAT_VB,
+        fee_per_vb: SAT_VB,
         change_output: Default::default(),
         disable_change_output: true,
     };
@@ -176,7 +176,7 @@ fn p2tr_key_path_fee_estimate() {
         inputs: vec![tx1],
         outputs: vec![out1],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: SAT_VB,
+        fee_per_vb: SAT_VB,
         change_output: Default::default(),
         disable_change_output: true,
     };
@@ -242,7 +242,7 @@ fn brc20_inscribe_fee_estimate() {
         inputs: vec![tx1],
         outputs: vec![out1],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: SAT_VB,
+        fee_per_vb: SAT_VB,
         change_output: Default::default(),
         disable_change_output: true,
     };
diff --git a/rust/tw_bitcoin/src/tests/ordinal_nft.rs b/rust/tw_bitcoin/src/tests/ordinal_nft.rs
index f9b1fb7112a..6f5856eb3d3 100644
--- a/rust/tw_bitcoin/src/tests/ordinal_nft.rs
+++ b/rust/tw_bitcoin/src/tests/ordinal_nft.rs
@@ -49,7 +49,7 @@ fn coin_entry_sign_ordinal_nft_commit_reveal_transfer() {
         inputs: vec![tx1],
         outputs: vec![out1],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: 0,
+        fee_per_vb: 0,
         change_output: Default::default(),
         disable_change_output: true,
     };
@@ -113,7 +113,7 @@ fn coin_entry_sign_ordinal_nft_commit_reveal_transfer() {
         inputs: vec![tx1],
         outputs: vec![out1],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: 0,
+        fee_per_vb: 0,
         change_output: Default::default(),
         disable_change_output: true,
     };
diff --git a/rust/tw_bitcoin/src/tests/p2tr_key_path.rs b/rust/tw_bitcoin/src/tests/p2tr_key_path.rs
index 8e39da2a5aa..7a78c2c39ec 100644
--- a/rust/tw_bitcoin/src/tests/p2tr_key_path.rs
+++ b/rust/tw_bitcoin/src/tests/p2tr_key_path.rs
@@ -47,7 +47,7 @@ fn coin_entry_sign_input_p2pkh_output_p2tr_key_path() {
         inputs: vec![tx1],
         outputs: vec![out1],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: 0,
+        fee_per_vb: 0,
         change_output: Default::default(),
         disable_change_output: true,
     };
@@ -90,7 +90,7 @@ fn coin_entry_sign_input_p2pkh_output_p2tr_key_path() {
         inputs: vec![tx1],
         outputs: vec![out1],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: 0,
+        fee_per_vb: 0,
         change_output: Default::default(),
         disable_change_output: true,
     };
diff --git a/rust/tw_bitcoin/src/tests/p2wpkh.rs b/rust/tw_bitcoin/src/tests/p2wpkh.rs
index 6a81ce22f6d..4b5f4761b18 100644
--- a/rust/tw_bitcoin/src/tests/p2wpkh.rs
+++ b/rust/tw_bitcoin/src/tests/p2wpkh.rs
@@ -50,7 +50,7 @@ fn coin_entry_sign_input_p2pkh_and_p2wpkh_output_p2wpkh() {
         inputs: vec![tx1],
         outputs: vec![out1],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: 0,
+        fee_per_vb: 0,
         change_output: Default::default(),
         disable_change_output: true,
     };
diff --git a/rust/tw_bitcoin/src/tests/send_to_address.rs b/rust/tw_bitcoin/src/tests/send_to_address.rs
index 44a333b929c..93c0e9a1c4f 100644
--- a/rust/tw_bitcoin/src/tests/send_to_address.rs
+++ b/rust/tw_bitcoin/src/tests/send_to_address.rs
@@ -50,7 +50,7 @@ fn send_to_p2pkh_address() {
         inputs: vec![tx1],
         outputs: vec![out1],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: 0,
+        fee_per_vb: 0,
         change_output: Default::default(),
         disable_change_output: true,
     };
@@ -114,7 +114,7 @@ fn send_to_p2wpkh_address() {
         inputs: vec![tx1],
         outputs: vec![out1],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: 0,
+        fee_per_vb: 0,
         change_output: Default::default(),
         disable_change_output: true,
     };
@@ -181,7 +181,7 @@ fn send_to_p2tr_key_path_address() {
         inputs: vec![tx1],
         outputs: vec![out1],
         input_selector: UtxoProto::InputSelector::UseAll,
-        sat_vb: 0,
+        fee_per_vb: 0,
         change_output: Default::default(),
         disable_change_output: true,
     };
diff --git a/src/proto/BitcoinV2.proto b/src/proto/BitcoinV2.proto
index 9a65a98fd5b..f7ffd6e3971 100644
--- a/src/proto/BitcoinV2.proto
+++ b/src/proto/BitcoinV2.proto
@@ -63,7 +63,7 @@ message SigningInput {
 
     Utxo.Proto.InputSelector input_selector = 7;
 
-    uint64 sat_vb = 8;
+    uint64 fee_per_vb = 8;
 
     // The change output to be added (return to sender).
     // The `value` can be left at 0.