diff --git a/lib/bindings/langs/flutter/breez_sdk_liquid/include/breez_sdk_liquid.h b/lib/bindings/langs/flutter/breez_sdk_liquid/include/breez_sdk_liquid.h
index 96d905482..b6c85d8a5 100644
--- a/lib/bindings/langs/flutter/breez_sdk_liquid/include/breez_sdk_liquid.h
+++ b/lib/bindings/langs/flutter/breez_sdk_liquid/include/breez_sdk_liquid.h
@@ -148,7 +148,7 @@ typedef struct wire_cst_pay_onchain_amount {
 
 typedef struct wire_cst_prepare_pay_onchain_request {
   struct wire_cst_pay_onchain_amount amount;
-  uint32_t *sat_per_vbyte;
+  uint32_t *fee_rate_msat_per_vbyte;
 } wire_cst_prepare_pay_onchain_request;
 
 typedef struct wire_cst_prepare_receive_request {
@@ -159,7 +159,7 @@ typedef struct wire_cst_prepare_receive_request {
 typedef struct wire_cst_prepare_refund_request {
   struct wire_cst_list_prim_u_8_strict *swap_address;
   struct wire_cst_list_prim_u_8_strict *refund_address;
-  uint32_t sat_per_vbyte;
+  uint32_t fee_rate_msat_per_vbyte;
 } wire_cst_prepare_refund_request;
 
 typedef struct wire_cst_prepare_send_request {
@@ -182,7 +182,7 @@ typedef struct wire_cst_receive_payment_request {
 typedef struct wire_cst_refund_request {
   struct wire_cst_list_prim_u_8_strict *swap_address;
   struct wire_cst_list_prim_u_8_strict *refund_address;
-  uint32_t sat_per_vbyte;
+  uint32_t fee_rate_msat_per_vbyte;
 } wire_cst_refund_request;
 
 typedef struct wire_cst_restore_request {
diff --git a/lib/bindings/src/breez_sdk_liquid.udl b/lib/bindings/src/breez_sdk_liquid.udl
index b5bc450e5..d8464bf66 100644
--- a/lib/bindings/src/breez_sdk_liquid.udl
+++ b/lib/bindings/src/breez_sdk_liquid.udl
@@ -419,7 +419,7 @@ interface PayOnchainAmount {
 
 dictionary PreparePayOnchainRequest {
     PayOnchainAmount amount;
-    u32? sat_per_vbyte = null;
+    u32? fee_rate_msat_per_vbyte = null;
 };
 
 dictionary PreparePayOnchainResponse {
@@ -519,7 +519,7 @@ dictionary RecommendedFees {
 dictionary PrepareRefundRequest {
     string swap_address;
     string refund_address;
-    u32 sat_per_vbyte;
+    u32 fee_rate_msat_per_vbyte;
 };
 
 dictionary PrepareRefundResponse {
@@ -531,7 +531,7 @@ dictionary PrepareRefundResponse {
 dictionary RefundRequest {
     string swap_address;
     string refund_address;
-    u32 sat_per_vbyte;
+    u32 fee_rate_msat_per_vbyte;
 };
 
 dictionary RefundResponse {
diff --git a/lib/core/src/frb_generated.rs b/lib/core/src/frb_generated.rs
index c9cf6d666..68d9b2230 100644
--- a/lib/core/src/frb_generated.rs
+++ b/lib/core/src/frb_generated.rs
@@ -3331,10 +3331,10 @@ impl SseDecode for crate::model::PreparePayOnchainRequest {
     // Codec=Sse (Serialization based), see doc to use other codecs
     fn sse_decode(deserializer: &mut flutter_rust_bridge::for_generated::SseDeserializer) -> Self {
         let mut var_amount = <crate::model::PayOnchainAmount>::sse_decode(deserializer);
-        let mut var_satPerVbyte = <Option<u32>>::sse_decode(deserializer);
+        let mut var_feeRateMsatPerVbyte = <Option<u32>>::sse_decode(deserializer);
         return crate::model::PreparePayOnchainRequest {
             amount: var_amount,
-            sat_per_vbyte: var_satPerVbyte,
+            fee_rate_msat_per_vbyte: var_feeRateMsatPerVbyte,
         };
     }
 }
@@ -3384,11 +3384,11 @@ impl SseDecode for crate::model::PrepareRefundRequest {
     fn sse_decode(deserializer: &mut flutter_rust_bridge::for_generated::SseDeserializer) -> Self {
         let mut var_swapAddress = <String>::sse_decode(deserializer);
         let mut var_refundAddress = <String>::sse_decode(deserializer);
-        let mut var_satPerVbyte = <u32>::sse_decode(deserializer);
+        let mut var_feeRateMsatPerVbyte = <u32>::sse_decode(deserializer);
         return crate::model::PrepareRefundRequest {
             swap_address: var_swapAddress,
             refund_address: var_refundAddress,
-            sat_per_vbyte: var_satPerVbyte,
+            fee_rate_msat_per_vbyte: var_feeRateMsatPerVbyte,
         };
     }
 }
@@ -3491,11 +3491,11 @@ impl SseDecode for crate::model::RefundRequest {
     fn sse_decode(deserializer: &mut flutter_rust_bridge::for_generated::SseDeserializer) -> Self {
         let mut var_swapAddress = <String>::sse_decode(deserializer);
         let mut var_refundAddress = <String>::sse_decode(deserializer);
-        let mut var_satPerVbyte = <u32>::sse_decode(deserializer);
+        let mut var_feeRateMsatPerVbyte = <u32>::sse_decode(deserializer);
         return crate::model::RefundRequest {
             swap_address: var_swapAddress,
             refund_address: var_refundAddress,
-            sat_per_vbyte: var_satPerVbyte,
+            fee_rate_msat_per_vbyte: var_feeRateMsatPerVbyte,
         };
     }
 }
@@ -5140,7 +5140,7 @@ impl flutter_rust_bridge::IntoDart for crate::model::PreparePayOnchainRequest {
     fn into_dart(self) -> flutter_rust_bridge::for_generated::DartAbi {
         [
             self.amount.into_into_dart().into_dart(),
-            self.sat_per_vbyte.into_into_dart().into_dart(),
+            self.fee_rate_msat_per_vbyte.into_into_dart().into_dart(),
         ]
         .into_dart()
     }
@@ -5227,7 +5227,7 @@ impl flutter_rust_bridge::IntoDart for crate::model::PrepareRefundRequest {
         [
             self.swap_address.into_into_dart().into_dart(),
             self.refund_address.into_into_dart().into_dart(),
-            self.sat_per_vbyte.into_into_dart().into_dart(),
+            self.fee_rate_msat_per_vbyte.into_into_dart().into_dart(),
         ]
         .into_dart()
     }
@@ -5394,7 +5394,7 @@ impl flutter_rust_bridge::IntoDart for crate::model::RefundRequest {
         [
             self.swap_address.into_into_dart().into_dart(),
             self.refund_address.into_into_dart().into_dart(),
-            self.sat_per_vbyte.into_into_dart().into_dart(),
+            self.fee_rate_msat_per_vbyte.into_into_dart().into_dart(),
         ]
         .into_dart()
     }
@@ -6829,7 +6829,7 @@ impl SseEncode for crate::model::PreparePayOnchainRequest {
     // Codec=Sse (Serialization based), see doc to use other codecs
     fn sse_encode(self, serializer: &mut flutter_rust_bridge::for_generated::SseSerializer) {
         <crate::model::PayOnchainAmount>::sse_encode(self.amount, serializer);
-        <Option<u32>>::sse_encode(self.sat_per_vbyte, serializer);
+        <Option<u32>>::sse_encode(self.fee_rate_msat_per_vbyte, serializer);
     }
 }
 
@@ -6864,7 +6864,7 @@ impl SseEncode for crate::model::PrepareRefundRequest {
     fn sse_encode(self, serializer: &mut flutter_rust_bridge::for_generated::SseSerializer) {
         <String>::sse_encode(self.swap_address, serializer);
         <String>::sse_encode(self.refund_address, serializer);
-        <u32>::sse_encode(self.sat_per_vbyte, serializer);
+        <u32>::sse_encode(self.fee_rate_msat_per_vbyte, serializer);
     }
 }
 
@@ -6933,7 +6933,7 @@ impl SseEncode for crate::model::RefundRequest {
     fn sse_encode(self, serializer: &mut flutter_rust_bridge::for_generated::SseSerializer) {
         <String>::sse_encode(self.swap_address, serializer);
         <String>::sse_encode(self.refund_address, serializer);
-        <u32>::sse_encode(self.sat_per_vbyte, serializer);
+        <u32>::sse_encode(self.fee_rate_msat_per_vbyte, serializer);
     }
 }
 
@@ -8474,7 +8474,7 @@ mod io {
         fn cst_decode(self) -> crate::model::PreparePayOnchainRequest {
             crate::model::PreparePayOnchainRequest {
                 amount: self.amount.cst_decode(),
-                sat_per_vbyte: self.sat_per_vbyte.cst_decode(),
+                fee_rate_msat_per_vbyte: self.fee_rate_msat_per_vbyte.cst_decode(),
             }
         }
     }
@@ -8513,7 +8513,7 @@ mod io {
             crate::model::PrepareRefundRequest {
                 swap_address: self.swap_address.cst_decode(),
                 refund_address: self.refund_address.cst_decode(),
-                sat_per_vbyte: self.sat_per_vbyte.cst_decode(),
+                fee_rate_msat_per_vbyte: self.fee_rate_msat_per_vbyte.cst_decode(),
             }
         }
     }
@@ -8590,7 +8590,7 @@ mod io {
             crate::model::RefundRequest {
                 swap_address: self.swap_address.cst_decode(),
                 refund_address: self.refund_address.cst_decode(),
-                sat_per_vbyte: self.sat_per_vbyte.cst_decode(),
+                fee_rate_msat_per_vbyte: self.fee_rate_msat_per_vbyte.cst_decode(),
             }
         }
     }
@@ -9464,7 +9464,7 @@ mod io {
         fn new_with_null_ptr() -> Self {
             Self {
                 amount: Default::default(),
-                sat_per_vbyte: core::ptr::null_mut(),
+                fee_rate_msat_per_vbyte: core::ptr::null_mut(),
             }
         }
     }
@@ -9519,7 +9519,7 @@ mod io {
             Self {
                 swap_address: core::ptr::null_mut(),
                 refund_address: core::ptr::null_mut(),
-                sat_per_vbyte: Default::default(),
+                fee_rate_msat_per_vbyte: Default::default(),
             }
         }
     }
@@ -9628,7 +9628,7 @@ mod io {
             Self {
                 swap_address: core::ptr::null_mut(),
                 refund_address: core::ptr::null_mut(),
-                sat_per_vbyte: Default::default(),
+                fee_rate_msat_per_vbyte: Default::default(),
             }
         }
     }
@@ -11382,7 +11382,7 @@ mod io {
     #[derive(Clone, Copy)]
     pub struct wire_cst_prepare_pay_onchain_request {
         amount: wire_cst_pay_onchain_amount,
-        sat_per_vbyte: *mut u32,
+        fee_rate_msat_per_vbyte: *mut u32,
     }
     #[repr(C)]
     #[derive(Clone, Copy)]
@@ -11409,7 +11409,7 @@ mod io {
     pub struct wire_cst_prepare_refund_request {
         swap_address: *mut wire_cst_list_prim_u_8_strict,
         refund_address: *mut wire_cst_list_prim_u_8_strict,
-        sat_per_vbyte: u32,
+        fee_rate_msat_per_vbyte: u32,
     }
     #[repr(C)]
     #[derive(Clone, Copy)]
@@ -11462,7 +11462,7 @@ mod io {
     pub struct wire_cst_refund_request {
         swap_address: *mut wire_cst_list_prim_u_8_strict,
         refund_address: *mut wire_cst_list_prim_u_8_strict,
-        sat_per_vbyte: u32,
+        fee_rate_msat_per_vbyte: u32,
     }
     #[repr(C)]
     #[derive(Clone, Copy)]
diff --git a/lib/core/src/model.rs b/lib/core/src/model.rs
index 0a57b91a1..4ff206152 100644
--- a/lib/core/src/model.rs
+++ b/lib/core/src/model.rs
@@ -332,8 +332,8 @@ pub enum PayOnchainAmount {
 #[derive(Debug, Serialize, Clone)]
 pub struct PreparePayOnchainRequest {
     pub amount: PayOnchainAmount,
-    /// The optional fee rate of the Bitcoin claim transaction. Defaults to the swapper estimated claim fee.
-    pub sat_per_vbyte: Option<u32>,
+    /// The optional fee rate of the Bitcoin claim transaction in msat/vB. Defaults to the swapper estimated claim fee.
+    pub fee_rate_msat_per_vbyte: Option<u32>,
 }
 
 /// Returned when calling [crate::sdk::LiquidSdk::prepare_pay_onchain].
diff --git a/lib/core/src/sdk.rs b/lib/core/src/sdk.rs
index 320a60de2..674305163 100644
--- a/lib/core/src/sdk.rs
+++ b/lib/core/src/sdk.rs
@@ -1099,7 +1099,7 @@ impl LiquidSdk {
 
         let balance_sat = self.get_info().await?.balance_sat;
         let pair = self.get_chain_pair(Direction::Outgoing)?;
-        let claim_fees_sat = match req.sat_per_vbyte {
+        let claim_fees_sat = match req.fee_rate_msat_per_vbyte {
             Some(sat_per_vbyte) => ESTIMATED_BTC_CLAIM_TX_VSIZE * sat_per_vbyte as u64,
             None => pair.clone().fees.claim_estimate(),
         };
diff --git a/packages/dart/lib/src/frb_generated.dart b/packages/dart/lib/src/frb_generated.dart
index 7789cde5c..67cf45276 100644
--- a/packages/dart/lib/src/frb_generated.dart
+++ b/packages/dart/lib/src/frb_generated.dart
@@ -2393,7 +2393,7 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
     if (arr.length != 2) throw Exception('unexpected arr length: expect 2 but see ${arr.length}');
     return PreparePayOnchainRequest(
       amount: dco_decode_pay_onchain_amount(arr[0]),
-      satPerVbyte: dco_decode_opt_box_autoadd_u_32(arr[1]),
+      feeRateMsatPerVbyte: dco_decode_opt_box_autoadd_u_32(arr[1]),
     );
   }
 
@@ -2440,7 +2440,7 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
     return PrepareRefundRequest(
       swapAddress: dco_decode_String(arr[0]),
       refundAddress: dco_decode_String(arr[1]),
-      satPerVbyte: dco_decode_u_32(arr[2]),
+      feeRateMsatPerVbyte: dco_decode_u_32(arr[2]),
     );
   }
 
@@ -2533,7 +2533,7 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
     return RefundRequest(
       swapAddress: dco_decode_String(arr[0]),
       refundAddress: dco_decode_String(arr[1]),
-      satPerVbyte: dco_decode_u_32(arr[2]),
+      feeRateMsatPerVbyte: dco_decode_u_32(arr[2]),
     );
   }
 
@@ -4097,8 +4097,8 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
   PreparePayOnchainRequest sse_decode_prepare_pay_onchain_request(SseDeserializer deserializer) {
     // Codec=Sse (Serialization based), see doc to use other codecs
     var var_amount = sse_decode_pay_onchain_amount(deserializer);
-    var var_satPerVbyte = sse_decode_opt_box_autoadd_u_32(deserializer);
-    return PreparePayOnchainRequest(amount: var_amount, satPerVbyte: var_satPerVbyte);
+    var var_feeRateMsatPerVbyte = sse_decode_opt_box_autoadd_u_32(deserializer);
+    return PreparePayOnchainRequest(amount: var_amount, feeRateMsatPerVbyte: var_feeRateMsatPerVbyte);
   }
 
   @protected
@@ -4136,9 +4136,11 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
     // Codec=Sse (Serialization based), see doc to use other codecs
     var var_swapAddress = sse_decode_String(deserializer);
     var var_refundAddress = sse_decode_String(deserializer);
-    var var_satPerVbyte = sse_decode_u_32(deserializer);
+    var var_feeRateMsatPerVbyte = sse_decode_u_32(deserializer);
     return PrepareRefundRequest(
-        swapAddress: var_swapAddress, refundAddress: var_refundAddress, satPerVbyte: var_satPerVbyte);
+        swapAddress: var_swapAddress,
+        refundAddress: var_refundAddress,
+        feeRateMsatPerVbyte: var_feeRateMsatPerVbyte);
   }
 
   @protected
@@ -4214,9 +4216,11 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
     // Codec=Sse (Serialization based), see doc to use other codecs
     var var_swapAddress = sse_decode_String(deserializer);
     var var_refundAddress = sse_decode_String(deserializer);
-    var var_satPerVbyte = sse_decode_u_32(deserializer);
+    var var_feeRateMsatPerVbyte = sse_decode_u_32(deserializer);
     return RefundRequest(
-        swapAddress: var_swapAddress, refundAddress: var_refundAddress, satPerVbyte: var_satPerVbyte);
+        swapAddress: var_swapAddress,
+        refundAddress: var_refundAddress,
+        feeRateMsatPerVbyte: var_feeRateMsatPerVbyte);
   }
 
   @protected
@@ -5694,7 +5698,7 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
   void sse_encode_prepare_pay_onchain_request(PreparePayOnchainRequest self, SseSerializer serializer) {
     // Codec=Sse (Serialization based), see doc to use other codecs
     sse_encode_pay_onchain_amount(self.amount, serializer);
-    sse_encode_opt_box_autoadd_u_32(self.satPerVbyte, serializer);
+    sse_encode_opt_box_autoadd_u_32(self.feeRateMsatPerVbyte, serializer);
   }
 
   @protected
@@ -5725,7 +5729,7 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
     // Codec=Sse (Serialization based), see doc to use other codecs
     sse_encode_String(self.swapAddress, serializer);
     sse_encode_String(self.refundAddress, serializer);
-    sse_encode_u_32(self.satPerVbyte, serializer);
+    sse_encode_u_32(self.feeRateMsatPerVbyte, serializer);
   }
 
   @protected
@@ -5786,7 +5790,7 @@ class RustLibApiImpl extends RustLibApiImplPlatform implements RustLibApi {
     // Codec=Sse (Serialization based), see doc to use other codecs
     sse_encode_String(self.swapAddress, serializer);
     sse_encode_String(self.refundAddress, serializer);
-    sse_encode_u_32(self.satPerVbyte, serializer);
+    sse_encode_u_32(self.feeRateMsatPerVbyte, serializer);
   }
 
   @protected
diff --git a/packages/dart/lib/src/frb_generated.io.dart b/packages/dart/lib/src/frb_generated.io.dart
index dfb700e4a..8566073b2 100644
--- a/packages/dart/lib/src/frb_generated.io.dart
+++ b/packages/dart/lib/src/frb_generated.io.dart
@@ -2462,7 +2462,7 @@ abstract class RustLibApiImplPlatform extends BaseApiImpl<RustLibWire> {
   void cst_api_fill_to_wire_prepare_pay_onchain_request(
       PreparePayOnchainRequest apiObj, wire_cst_prepare_pay_onchain_request wireObj) {
     cst_api_fill_to_wire_pay_onchain_amount(apiObj.amount, wireObj.amount);
-    wireObj.sat_per_vbyte = cst_encode_opt_box_autoadd_u_32(apiObj.satPerVbyte);
+    wireObj.fee_rate_msat_per_vbyte = cst_encode_opt_box_autoadd_u_32(apiObj.feeRateMsatPerVbyte);
   }
 
   @protected
@@ -2493,7 +2493,7 @@ abstract class RustLibApiImplPlatform extends BaseApiImpl<RustLibWire> {
       PrepareRefundRequest apiObj, wire_cst_prepare_refund_request wireObj) {
     wireObj.swap_address = cst_encode_String(apiObj.swapAddress);
     wireObj.refund_address = cst_encode_String(apiObj.refundAddress);
-    wireObj.sat_per_vbyte = cst_encode_u_32(apiObj.satPerVbyte);
+    wireObj.fee_rate_msat_per_vbyte = cst_encode_u_32(apiObj.feeRateMsatPerVbyte);
   }
 
   @protected
@@ -2551,7 +2551,7 @@ abstract class RustLibApiImplPlatform extends BaseApiImpl<RustLibWire> {
   void cst_api_fill_to_wire_refund_request(RefundRequest apiObj, wire_cst_refund_request wireObj) {
     wireObj.swap_address = cst_encode_String(apiObj.swapAddress);
     wireObj.refund_address = cst_encode_String(apiObj.refundAddress);
-    wireObj.sat_per_vbyte = cst_encode_u_32(apiObj.satPerVbyte);
+    wireObj.fee_rate_msat_per_vbyte = cst_encode_u_32(apiObj.feeRateMsatPerVbyte);
   }
 
   @protected
@@ -4777,7 +4777,7 @@ final class wire_cst_pay_onchain_amount extends ffi.Struct {
 final class wire_cst_prepare_pay_onchain_request extends ffi.Struct {
   external wire_cst_pay_onchain_amount amount;
 
-  external ffi.Pointer<ffi.Uint32> sat_per_vbyte;
+  external ffi.Pointer<ffi.Uint32> fee_rate_msat_per_vbyte;
 }
 
 final class wire_cst_prepare_receive_request extends ffi.Struct {
@@ -4793,7 +4793,7 @@ final class wire_cst_prepare_refund_request extends ffi.Struct {
   external ffi.Pointer<wire_cst_list_prim_u_8_strict> refund_address;
 
   @ffi.Uint32()
-  external int sat_per_vbyte;
+  external int fee_rate_msat_per_vbyte;
 }
 
 final class wire_cst_prepare_send_request extends ffi.Struct {
@@ -4826,7 +4826,7 @@ final class wire_cst_refund_request extends ffi.Struct {
   external ffi.Pointer<wire_cst_list_prim_u_8_strict> refund_address;
 
   @ffi.Uint32()
-  external int sat_per_vbyte;
+  external int fee_rate_msat_per_vbyte;
 }
 
 final class wire_cst_restore_request extends ffi.Struct {
diff --git a/packages/dart/lib/src/model.dart b/packages/dart/lib/src/model.dart
index 5429a0103..4e593acb3 100644
--- a/packages/dart/lib/src/model.dart
+++ b/packages/dart/lib/src/model.dart
@@ -716,16 +716,16 @@ class PrepareBuyBitcoinResponse {
 class PreparePayOnchainRequest {
   final PayOnchainAmount amount;
 
-  /// The optional fee rate of the Bitcoin claim transaction. Defaults to the swapper estimated claim fee.
-  final int? satPerVbyte;
+  /// The optional fee rate of the Bitcoin claim transaction in msat/vB. Defaults to the swapper estimated claim fee.
+  final int? feeRateMsatPerVbyte;
 
   const PreparePayOnchainRequest({
     required this.amount,
-    this.satPerVbyte,
+    this.feeRateMsatPerVbyte,
   });
 
   @override
-  int get hashCode => amount.hashCode ^ satPerVbyte.hashCode;
+  int get hashCode => amount.hashCode ^ feeRateMsatPerVbyte.hashCode;
 
   @override
   bool operator ==(Object other) =>
@@ -733,7 +733,7 @@ class PreparePayOnchainRequest {
       other is PreparePayOnchainRequest &&
           runtimeType == other.runtimeType &&
           amount == other.amount &&
-          satPerVbyte == other.satPerVbyte;
+          feeRateMsatPerVbyte == other.feeRateMsatPerVbyte;
 }
 
 /// Returned when calling [crate::sdk::LiquidSdk::prepare_pay_onchain].
@@ -816,17 +816,17 @@ class PrepareRefundRequest {
   /// The address to refund the swap funds to
   final String refundAddress;
 
-  /// The fee rate in sat/vB for the refund transaction
-  final int satPerVbyte;
+  /// The fee rate in msat/vB for the refund transaction
+  final int feeRateMsatPerVbyte;
 
   const PrepareRefundRequest({
     required this.swapAddress,
     required this.refundAddress,
-    required this.satPerVbyte,
+    required this.feeRateMsatPerVbyte,
   });
 
   @override
-  int get hashCode => swapAddress.hashCode ^ refundAddress.hashCode ^ satPerVbyte.hashCode;
+  int get hashCode => swapAddress.hashCode ^ refundAddress.hashCode ^ feeRateMsatPerVbyte.hashCode;
 
   @override
   bool operator ==(Object other) =>
@@ -835,7 +835,7 @@ class PrepareRefundRequest {
           runtimeType == other.runtimeType &&
           swapAddress == other.swapAddress &&
           refundAddress == other.refundAddress &&
-          satPerVbyte == other.satPerVbyte;
+          feeRateMsatPerVbyte == other.feeRateMsatPerVbyte;
 }
 
 /// Returned when calling [crate::sdk::LiquidSdk::prepare_refund].
@@ -1004,17 +1004,17 @@ class RefundRequest {
   /// The address to refund the swap funds to
   final String refundAddress;
 
-  /// The fee rate in sat/vB for the refund transaction
-  final int satPerVbyte;
+  /// The fee rate in msat/vB for the refund transaction
+  final int feeRateMsatPerVbyte;
 
   const RefundRequest({
     required this.swapAddress,
     required this.refundAddress,
-    required this.satPerVbyte,
+    required this.feeRateMsatPerVbyte,
   });
 
   @override
-  int get hashCode => swapAddress.hashCode ^ refundAddress.hashCode ^ satPerVbyte.hashCode;
+  int get hashCode => swapAddress.hashCode ^ refundAddress.hashCode ^ feeRateMsatPerVbyte.hashCode;
 
   @override
   bool operator ==(Object other) =>
@@ -1023,7 +1023,7 @@ class RefundRequest {
           runtimeType == other.runtimeType &&
           swapAddress == other.swapAddress &&
           refundAddress == other.refundAddress &&
-          satPerVbyte == other.satPerVbyte;
+          feeRateMsatPerVbyte == other.feeRateMsatPerVbyte;
 }
 
 /// Returned when calling [crate::sdk::LiquidSdk::refund].
diff --git a/packages/flutter/lib/flutter_breez_liquid_bindings_generated.dart b/packages/flutter/lib/flutter_breez_liquid_bindings_generated.dart
index 8797523a6..60c3c1f1b 100644
--- a/packages/flutter/lib/flutter_breez_liquid_bindings_generated.dart
+++ b/packages/flutter/lib/flutter_breez_liquid_bindings_generated.dart
@@ -1594,7 +1594,7 @@ final class wire_cst_pay_onchain_amount extends ffi.Struct {
 final class wire_cst_prepare_pay_onchain_request extends ffi.Struct {
   external wire_cst_pay_onchain_amount amount;
 
-  external ffi.Pointer<ffi.Uint32> sat_per_vbyte;
+  external ffi.Pointer<ffi.Uint32> fee_rate_msat_per_vbyte;
 }
 
 final class wire_cst_prepare_receive_request extends ffi.Struct {
@@ -1610,7 +1610,7 @@ final class wire_cst_prepare_refund_request extends ffi.Struct {
   external ffi.Pointer<wire_cst_list_prim_u_8_strict> refund_address;
 
   @ffi.Uint32()
-  external int sat_per_vbyte;
+  external int fee_rate_msat_per_vbyte;
 }
 
 final class wire_cst_prepare_send_request extends ffi.Struct {
@@ -1643,7 +1643,7 @@ final class wire_cst_refund_request extends ffi.Struct {
   external ffi.Pointer<wire_cst_list_prim_u_8_strict> refund_address;
 
   @ffi.Uint32()
-  external int sat_per_vbyte;
+  external int fee_rate_msat_per_vbyte;
 }
 
 final class wire_cst_restore_request extends ffi.Struct {
diff --git a/packages/react-native/android/src/main/java/com/breezsdkliquid/BreezSDKLiquidMapper.kt b/packages/react-native/android/src/main/java/com/breezsdkliquid/BreezSDKLiquidMapper.kt
index 630cc69fc..86c4334be 100644
--- a/packages/react-native/android/src/main/java/com/breezsdkliquid/BreezSDKLiquidMapper.kt
+++ b/packages/react-native/android/src/main/java/com/breezsdkliquid/BreezSDKLiquidMapper.kt
@@ -1340,23 +1340,23 @@ fun asPreparePayOnchainRequest(preparePayOnchainRequest: ReadableMap): PreparePa
         return null
     }
     val amount = preparePayOnchainRequest.getMap("amount")?.let { asPayOnchainAmount(it) }!!
-    val satPerVbyte =
+    val feeRateMsatPerVbyte =
         if (hasNonNullKey(
                 preparePayOnchainRequest,
-                "satPerVbyte",
+                "feeRateMsatPerVbyte",
             )
         ) {
-            preparePayOnchainRequest.getInt("satPerVbyte").toUInt()
+            preparePayOnchainRequest.getInt("feeRateMsatPerVbyte").toUInt()
         } else {
             null
         }
-    return PreparePayOnchainRequest(amount, satPerVbyte)
+    return PreparePayOnchainRequest(amount, feeRateMsatPerVbyte)
 }
 
 fun readableMapOf(preparePayOnchainRequest: PreparePayOnchainRequest): ReadableMap =
     readableMapOf(
         "amount" to readableMapOf(preparePayOnchainRequest.amount),
-        "satPerVbyte" to preparePayOnchainRequest.satPerVbyte,
+        "feeRateMsatPerVbyte" to preparePayOnchainRequest.feeRateMsatPerVbyte,
     )
 
 fun asPreparePayOnchainRequestList(arr: ReadableArray): List<PreparePayOnchainRequest> {
@@ -1497,7 +1497,7 @@ fun asPrepareRefundRequest(prepareRefundRequest: ReadableMap): PrepareRefundRequ
             arrayOf(
                 "swapAddress",
                 "refundAddress",
-                "satPerVbyte",
+                "feeRateMsatPerVbyte",
             ),
         )
     ) {
@@ -1505,15 +1505,15 @@ fun asPrepareRefundRequest(prepareRefundRequest: ReadableMap): PrepareRefundRequ
     }
     val swapAddress = prepareRefundRequest.getString("swapAddress")!!
     val refundAddress = prepareRefundRequest.getString("refundAddress")!!
-    val satPerVbyte = prepareRefundRequest.getInt("satPerVbyte").toUInt()
-    return PrepareRefundRequest(swapAddress, refundAddress, satPerVbyte)
+    val feeRateMsatPerVbyte = prepareRefundRequest.getInt("feeRateMsatPerVbyte").toUInt()
+    return PrepareRefundRequest(swapAddress, refundAddress, feeRateMsatPerVbyte)
 }
 
 fun readableMapOf(prepareRefundRequest: PrepareRefundRequest): ReadableMap =
     readableMapOf(
         "swapAddress" to prepareRefundRequest.swapAddress,
         "refundAddress" to prepareRefundRequest.refundAddress,
-        "satPerVbyte" to prepareRefundRequest.satPerVbyte,
+        "feeRateMsatPerVbyte" to prepareRefundRequest.feeRateMsatPerVbyte,
     )
 
 fun asPrepareRefundRequestList(arr: ReadableArray): List<PrepareRefundRequest> {
@@ -1781,7 +1781,7 @@ fun asRefundRequest(refundRequest: ReadableMap): RefundRequest? {
             arrayOf(
                 "swapAddress",
                 "refundAddress",
-                "satPerVbyte",
+                "feeRateMsatPerVbyte",
             ),
         )
     ) {
@@ -1789,15 +1789,15 @@ fun asRefundRequest(refundRequest: ReadableMap): RefundRequest? {
     }
     val swapAddress = refundRequest.getString("swapAddress")!!
     val refundAddress = refundRequest.getString("refundAddress")!!
-    val satPerVbyte = refundRequest.getInt("satPerVbyte").toUInt()
-    return RefundRequest(swapAddress, refundAddress, satPerVbyte)
+    val feeRateMsatPerVbyte = refundRequest.getInt("feeRateMsatPerVbyte").toUInt()
+    return RefundRequest(swapAddress, refundAddress, feeRateMsatPerVbyte)
 }
 
 fun readableMapOf(refundRequest: RefundRequest): ReadableMap =
     readableMapOf(
         "swapAddress" to refundRequest.swapAddress,
         "refundAddress" to refundRequest.refundAddress,
-        "satPerVbyte" to refundRequest.satPerVbyte,
+        "feeRateMsatPerVbyte" to refundRequest.feeRateMsatPerVbyte,
     )
 
 fun asRefundRequestList(arr: ReadableArray): List<RefundRequest> {
diff --git a/packages/react-native/ios/BreezSDKLiquidMapper.swift b/packages/react-native/ios/BreezSDKLiquidMapper.swift
index ac0aec68d..d0f130b98 100644
--- a/packages/react-native/ios/BreezSDKLiquidMapper.swift
+++ b/packages/react-native/ios/BreezSDKLiquidMapper.swift
@@ -1584,21 +1584,21 @@ enum BreezSDKLiquidMapper {
         }
         let amount = try asPayOnchainAmount(payOnchainAmount: amountTmp)
 
-        var satPerVbyte: UInt32?
-        if hasNonNilKey(data: preparePayOnchainRequest, key: "satPerVbyte") {
-            guard let satPerVbyteTmp = preparePayOnchainRequest["satPerVbyte"] as? UInt32 else {
-                throw SdkError.Generic(message: errUnexpectedValue(fieldName: "satPerVbyte"))
+        var feeRateMsatPerVbyte: UInt32?
+        if hasNonNilKey(data: preparePayOnchainRequest, key: "feeRateMsatPerVbyte") {
+            guard let feeRateMsatPerVbyteTmp = preparePayOnchainRequest["feeRateMsatPerVbyte"] as? UInt32 else {
+                throw SdkError.Generic(message: errUnexpectedValue(fieldName: "feeRateMsatPerVbyte"))
             }
-            satPerVbyte = satPerVbyteTmp
+            feeRateMsatPerVbyte = feeRateMsatPerVbyteTmp
         }
 
-        return PreparePayOnchainRequest(amount: amount, satPerVbyte: satPerVbyte)
+        return PreparePayOnchainRequest(amount: amount, feeRateMsatPerVbyte: feeRateMsatPerVbyte)
     }
 
     static func dictionaryOf(preparePayOnchainRequest: PreparePayOnchainRequest) -> [String: Any?] {
         return [
             "amount": dictionaryOf(payOnchainAmount: preparePayOnchainRequest.amount),
-            "satPerVbyte": preparePayOnchainRequest.satPerVbyte == nil ? nil : preparePayOnchainRequest.satPerVbyte,
+            "feeRateMsatPerVbyte": preparePayOnchainRequest.feeRateMsatPerVbyte == nil ? nil : preparePayOnchainRequest.feeRateMsatPerVbyte,
         ]
     }
 
@@ -1751,18 +1751,18 @@ enum BreezSDKLiquidMapper {
         guard let refundAddress = prepareRefundRequest["refundAddress"] as? String else {
             throw SdkError.Generic(message: errMissingMandatoryField(fieldName: "refundAddress", typeName: "PrepareRefundRequest"))
         }
-        guard let satPerVbyte = prepareRefundRequest["satPerVbyte"] as? UInt32 else {
-            throw SdkError.Generic(message: errMissingMandatoryField(fieldName: "satPerVbyte", typeName: "PrepareRefundRequest"))
+        guard let feeRateMsatPerVbyte = prepareRefundRequest["feeRateMsatPerVbyte"] as? UInt32 else {
+            throw SdkError.Generic(message: errMissingMandatoryField(fieldName: "feeRateMsatPerVbyte", typeName: "PrepareRefundRequest"))
         }
 
-        return PrepareRefundRequest(swapAddress: swapAddress, refundAddress: refundAddress, satPerVbyte: satPerVbyte)
+        return PrepareRefundRequest(swapAddress: swapAddress, refundAddress: refundAddress, feeRateMsatPerVbyte: feeRateMsatPerVbyte)
     }
 
     static func dictionaryOf(prepareRefundRequest: PrepareRefundRequest) -> [String: Any?] {
         return [
             "swapAddress": prepareRefundRequest.swapAddress,
             "refundAddress": prepareRefundRequest.refundAddress,
-            "satPerVbyte": prepareRefundRequest.satPerVbyte,
+            "feeRateMsatPerVbyte": prepareRefundRequest.feeRateMsatPerVbyte,
         ]
     }
 
@@ -2071,18 +2071,18 @@ enum BreezSDKLiquidMapper {
         guard let refundAddress = refundRequest["refundAddress"] as? String else {
             throw SdkError.Generic(message: errMissingMandatoryField(fieldName: "refundAddress", typeName: "RefundRequest"))
         }
-        guard let satPerVbyte = refundRequest["satPerVbyte"] as? UInt32 else {
-            throw SdkError.Generic(message: errMissingMandatoryField(fieldName: "satPerVbyte", typeName: "RefundRequest"))
+        guard let feeRateMsatPerVbyte = refundRequest["feeRateMsatPerVbyte"] as? UInt32 else {
+            throw SdkError.Generic(message: errMissingMandatoryField(fieldName: "feeRateMsatPerVbyte", typeName: "RefundRequest"))
         }
 
-        return RefundRequest(swapAddress: swapAddress, refundAddress: refundAddress, satPerVbyte: satPerVbyte)
+        return RefundRequest(swapAddress: swapAddress, refundAddress: refundAddress, feeRateMsatPerVbyte: feeRateMsatPerVbyte)
     }
 
     static func dictionaryOf(refundRequest: RefundRequest) -> [String: Any?] {
         return [
             "swapAddress": refundRequest.swapAddress,
             "refundAddress": refundRequest.refundAddress,
-            "satPerVbyte": refundRequest.satPerVbyte,
+            "feeRateMsatPerVbyte": refundRequest.feeRateMsatPerVbyte,
         ]
     }
 
diff --git a/packages/react-native/src/index.ts b/packages/react-native/src/index.ts
index c2a96d925..8611774a0 100644
--- a/packages/react-native/src/index.ts
+++ b/packages/react-native/src/index.ts
@@ -246,7 +246,7 @@ export interface PrepareBuyBitcoinResponse {
 
 export interface PreparePayOnchainRequest {
     amount: PayOnchainAmount
-    satPerVbyte?: number
+    feeRateMsatPerVbyte?: number
 }
 
 export interface PreparePayOnchainResponse {
@@ -269,7 +269,7 @@ export interface PrepareReceiveResponse {
 export interface PrepareRefundRequest {
     swapAddress: string
     refundAddress: string
-    satPerVbyte: number
+    feeRateMsatPerVbyte: number
 }
 
 export interface PrepareRefundResponse {
@@ -314,7 +314,7 @@ export interface RecommendedFees {
 export interface RefundRequest {
     swapAddress: string
     refundAddress: string
-    satPerVbyte: number
+    feeRateMsatPerVbyte: number
 }
 
 export interface RefundResponse {