diff --git a/tests/account-button.spec.ts b/tests/account-button.spec.ts
new file mode 100644
index 0000000..aff99d1
--- /dev/null
+++ b/tests/account-button.spec.ts
@@ -0,0 +1,87 @@
+import { test, expect } from "@playwright/test";
+import { BASE_USER, USER_TEST_SIGNER_ADDRESS } from "./utils/testUsers";
+import { setupAllMocks } from "./utils/setupMocks";
+import { setupMockWallet } from "./utils/mockWallet";
+import { ANVIL_RPC_URL, isAnvilAvailable, setupTestBalances, startAnvil, stopAnvil } from "./utils/anvil";
+import type { Address } from "viem";
+
+/**
+ * Account Button Test Specification
+ * Tests the account-kit account button component to verify it displays
+ * the correct address and balance properties
+ */
+
+// Run tests sequentially to avoid Anvil state interference
+test.describe.configure({ mode: "serial" });
+
+test.describe("Account Button", () => {
+  test.beforeEach(async ({ page }) => {
+    // Ensure Anvil is stopped for this test (it doesn't use Anvil)
+    await stopAnvil();
+    await setupMockWallet(page);
+  });
+
+  test("displays account button with correct address and balance properties", async ({ page }) => {
+    // Set up all mocks for fully onboarded user
+    await setupAllMocks(page, BASE_USER);
+
+    // Navigate to home page
+    await page.goto("/");
+
+    // Wait for the account button to be visible (it's in the header)
+    const accountButton = page.getByTestId("account-button");
+    await expect(accountButton).toBeVisible();
+
+    await test.step("account button has address property", async () => {
+      const address = await accountButton.getAttribute("address");
+      expect(address).toBeDefined();
+      expect(address).toBeTruthy();
+      // Verify it matches the exact test user address
+      expect(address).toBe(USER_TEST_SIGNER_ADDRESS);
+    });
+
+    await test.step("account button has balance property", async () => {
+      // Wait for the balance to be "0.000 XDAI" with timeout
+      await expect(accountButton).toHaveAttribute("balance", "0.000 XDAI", { timeout: 10000 });
+    });
+  });
+});
+
+const anvilAvailable = isAnvilAvailable();
+
+test.describe("Account Button with Anvil", () => {
+  test.beforeEach(async ({ page }) => {
+    await startAnvil();
+    // Point the mock wallet to Anvil if available
+    await setupMockWallet(page, {
+      rpcUrl: anvilAvailable ? ANVIL_RPC_URL : undefined,
+    });
+  });
+
+  test.afterEach(async () => {
+    await stopAnvil();
+  });
+
+  test("displays account button with 100 XDAI balance", async ({ page }) => {
+    // Set up 111 XDAI for the signer address (account button shows connected wallet balance)
+    await setupTestBalances(USER_TEST_SIGNER_ADDRESS as Address, {
+      xDAI: "111",
+    });
+
+    // Set up all mocks for fully onboarded user
+    await setupAllMocks(page, BASE_USER);
+
+    // Navigate to home page
+    await page.goto("/");
+    await page.waitForLoadState("networkidle");
+
+    // Wait for the account button to be visible (it's in the header)
+    const accountButton = page.getByTestId("account-button");
+    await expect(accountButton).toBeVisible();
+
+    await test.step("account button displays 100 XDAI balance", async () => {
+      // Wait for the balance to update (account button may need time to fetch from chain)
+      await expect(accountButton).toHaveAttribute("balance", "111.000 XDAI", { timeout: 10000 });
+    });
+  });
+});