diff --git a/backend/integration_tests/src/save_crypto_account_tests.rs b/backend/integration_tests/src/save_crypto_account_tests.rs
index 9405350eb4..cbaf69ba95 100644
--- a/backend/integration_tests/src/save_crypto_account_tests.rs
+++ b/backend/integration_tests/src/save_crypto_account_tests.rs
@@ -24,3 +24,74 @@ fn save_crypto_account_succeeds() {
 
     assert_eq!(accounts, vec![named_account]);
 }
+
+#[test]
+fn save_crypto_account_invalid() {
+    let mut wrapper = ENV.deref().get();
+    let TestEnv { env, canister_ids, .. } = wrapper.env();
+
+    let user = client::local_user_index::happy_path::register_user(env, canister_ids.local_user_index);
+    let name = random_string();
+    let account = random_string();
+
+    let named_account = NamedAccount { name, account };
+
+    let response = client::user::save_crypto_account(env, user.principal, user.canister(), &named_account);
+    assert!(matches!(response, user_canister::save_crypto_account::Response::Invalid));
+}
+
+#[test]
+fn save_crypto_account_name_taken() {
+    let mut wrapper = ENV.deref().get();
+    let TestEnv { env, canister_ids, .. } = wrapper.env();
+
+    let user = client::local_user_index::happy_path::register_user(env, canister_ids.local_user_index);
+    let name = random_string();
+    let account1 = random_principal().to_string();
+    let account2 = random_principal().to_string();
+
+    let named_account1 = NamedAccount {
+        name: name.clone(),
+        account: account1,
+    };
+
+    let response = client::user::save_crypto_account(env, user.principal, user.canister(), &named_account1);
+    assert!(matches!(response, user_canister::save_crypto_account::Response::Success));
+
+    let named_account2 = NamedAccount { name, account: account2 };
+
+    let response = client::user::save_crypto_account(env, user.principal, user.canister(), &named_account2);
+    assert!(matches!(response, user_canister::save_crypto_account::Response::NameTaken));
+}
+
+#[test]
+fn save_crypto_account_with_same_account_updates_name() {
+    let mut wrapper = ENV.deref().get();
+    let TestEnv { env, canister_ids, .. } = wrapper.env();
+
+    let user = client::local_user_index::happy_path::register_user(env, canister_ids.local_user_index);
+    let name1 = random_string();
+    let name2 = random_string();
+    let account = random_principal().to_string();
+
+    let named_account1 = NamedAccount {
+        name: name1,
+        account: account.clone(),
+    };
+
+    let response1 = client::user::save_crypto_account(env, user.principal, user.canister(), &named_account1);
+    assert!(matches!(response1, user_canister::save_crypto_account::Response::Success));
+
+    let named_account2 = NamedAccount {
+        name: name2.clone(),
+        account,
+    };
+
+    let response2 = client::user::save_crypto_account(env, user.principal, user.canister(), &named_account2);
+    assert!(matches!(response2, user_canister::save_crypto_account::Response::Success));
+
+    let user_canister::saved_crypto_accounts::Response::Success(accounts) =
+        client::user::saved_crypto_accounts(env, user.principal, user.canister(), &Empty {});
+
+    assert_eq!(accounts, vec![named_account2]);
+}