diff --git a/mutiny-core/src/error.rs b/mutiny-core/src/error.rs
index 89f7640d5..5fbce3cd6 100644
--- a/mutiny-core/src/error.rs
+++ b/mutiny-core/src/error.rs
@@ -182,6 +182,9 @@ pub enum MutinyError {
     /// Failed to connect to a federation.
     #[error("Failed to connect to a federation.")]
     FederationConnectionFailed,
+    /// Fedimint transaction too large
+    #[error("Error constructing fedimint transaction, try lowering the amount.")]
+    FederationTxTooLarge,
     #[error(transparent)]
     Other(anyhow::Error),
 }
@@ -270,6 +273,7 @@ impl PartialEq for MutinyError {
             (Self::TokenAlreadySpent, Self::TokenAlreadySpent) => true,
             (Self::FederationRequired, Self::FederationRequired) => true,
             (Self::FederationConnectionFailed, Self::FederationConnectionFailed) => true,
+            (Self::FederationTxTooLarge, Self::FederationTxTooLarge) => true,
             (Self::Other(e), Self::Other(e2)) => e.to_string() == e2.to_string(),
             _ => false,
         }
@@ -601,7 +605,13 @@ impl From<anyhow::Error> for MutinyError {
         match e.to_string().as_str() {
             "Insufficient balance" => Self::InsufficientBalance,
             "MissingInvoiceAmount" => Self::BadAmountError,
-            _ => Self::Other(e),
+            "Federation didn't return peg-out fees" => Self::FederationConnectionFailed,
+            "The generated transaction would be rejected by the federation for being too large." => Self::FederationTxTooLarge,
+            str => if str.starts_with("Address isn't compatible with the federation's network") {
+                Self::IncorrectNetwork
+            } else {
+                Self::Other(e)
+            },
         }
     }
 }
diff --git a/mutiny-wasm/src/error.rs b/mutiny-wasm/src/error.rs
index 4297049f4..0e06d4c9d 100644
--- a/mutiny-wasm/src/error.rs
+++ b/mutiny-wasm/src/error.rs
@@ -177,6 +177,9 @@ pub enum MutinyJsError {
     /// Failed to connect to a federation.
     #[error("Failed to connect to a federation.")]
     FederationConnectionFailed,
+    /// Fedimint transaction too large
+    #[error("Error constructing fedimint transaction, try lowering the amount.")]
+    FederationTxTooLarge,
     /// Unknown error.
     #[error("Unknown Error")]
     UnknownError,
@@ -234,6 +237,7 @@ impl From<MutinyError> for MutinyJsError {
             MutinyError::TokenAlreadySpent => MutinyJsError::TokenAlreadySpent,
             MutinyError::FederationRequired => MutinyJsError::FederationRequired,
             MutinyError::FederationConnectionFailed => MutinyJsError::FederationConnectionFailed,
+            MutinyError::FederationTxTooLarge => MutinyJsError::FederationTxTooLarge,
             MutinyError::Other(_) => MutinyJsError::UnknownError,
             MutinyError::SubscriptionClientNotConfigured => {
                 MutinyJsError::SubscriptionClientNotConfigured