diff --git a/packages/ramps-controller/CHANGELOG.md b/packages/ramps-controller/CHANGELOG.md
index c2017d48dc..c3573e3e5c 100644
--- a/packages/ramps-controller/CHANGELOG.md
+++ b/packages/ramps-controller/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Export `TERMINAL_ORDER_STATUSES` and `isTerminalOrderStatus()` so consuming clients can share the controller's terminal order status set instead of maintaining duplicate copies. ([#9679](https://github.com/MetaMask/core/pull/9679))
+
 ## [20.0.0]
 
 ### Changed
diff --git a/packages/ramps-controller/src/RampsController.ts b/packages/ramps-controller/src/RampsController.ts
index 3f88e46e0c..aac160d882 100644
--- a/packages/ramps-controller/src/RampsController.ts
+++ b/packages/ramps-controller/src/RampsController.ts
@@ -15,6 +15,10 @@ import {
   isHeadlessAllProvidersEnabled,
   normalizeHeadlessProviderId,
 } from './featureFlags.js';
+import {
+  PENDING_ORDER_STATUSES,
+  TERMINAL_ORDER_STATUSES,
+} from './orderStatus.js';
 import {
   getProvidersServingAsset,
   providerServesAsset,
@@ -780,20 +784,6 @@ export function getInternalOrderCode(
 
 // === ORDER POLLING CONSTANTS ===
 
-const TERMINAL_ORDER_STATUSES = new Set<RampsOrderStatus>([
-  RampsOrderStatus.Completed,
-  RampsOrderStatus.Failed,
-  RampsOrderStatus.Cancelled,
-  RampsOrderStatus.IdExpired,
-]);
-
-const PENDING_ORDER_STATUSES = new Set<RampsOrderStatus>([
-  RampsOrderStatus.Pending,
-  RampsOrderStatus.Created,
-  RampsOrderStatus.Unknown,
-  RampsOrderStatus.Precreated,
-]);
-
 const DEFAULT_POLLING_INTERVAL_MS = 30_000;
 const MAX_ERROR_COUNT = 5;
 
diff --git a/packages/ramps-controller/src/index.ts b/packages/ramps-controller/src/index.ts
index b4633ad5b4..f1d1dcdbe6 100644
--- a/packages/ramps-controller/src/index.ts
+++ b/packages/ramps-controller/src/index.ts
@@ -161,6 +161,10 @@ export {
   isCustomActionQuote,
   isInAppOnlyQuote,
 } from './quoteClassification.js';
+export {
+  TERMINAL_ORDER_STATUSES,
+  isTerminalOrderStatus,
+} from './orderStatus.js';
 export type { TypedError } from './errorNormalization.js';
 export {
   getErrorMessage,
diff --git a/packages/ramps-controller/src/orderStatus.test.ts b/packages/ramps-controller/src/orderStatus.test.ts
new file mode 100644
index 0000000000..021bea37a2
--- /dev/null
+++ b/packages/ramps-controller/src/orderStatus.test.ts
@@ -0,0 +1,43 @@
+import {
+  TERMINAL_ORDER_STATUSES,
+  isTerminalOrderStatus,
+} from './orderStatus.js';
+import { RampsOrderStatus } from './RampsService.js';
+
+describe('TERMINAL_ORDER_STATUSES', () => {
+  it('includes completed, failed, cancelled, and id expired', () => {
+    expect(TERMINAL_ORDER_STATUSES.has(RampsOrderStatus.Completed)).toBe(true);
+    expect(TERMINAL_ORDER_STATUSES.has(RampsOrderStatus.Failed)).toBe(true);
+    expect(TERMINAL_ORDER_STATUSES.has(RampsOrderStatus.Cancelled)).toBe(true);
+    expect(TERMINAL_ORDER_STATUSES.has(RampsOrderStatus.IdExpired)).toBe(true);
+  });
+
+  it('excludes non-terminal statuses', () => {
+    expect(TERMINAL_ORDER_STATUSES.has(RampsOrderStatus.Unknown)).toBe(false);
+    expect(TERMINAL_ORDER_STATUSES.has(RampsOrderStatus.Precreated)).toBe(
+      false,
+    );
+    expect(TERMINAL_ORDER_STATUSES.has(RampsOrderStatus.Created)).toBe(false);
+    expect(TERMINAL_ORDER_STATUSES.has(RampsOrderStatus.Pending)).toBe(false);
+  });
+});
+
+describe('isTerminalOrderStatus', () => {
+  it.each([
+    RampsOrderStatus.Completed,
+    RampsOrderStatus.Failed,
+    RampsOrderStatus.Cancelled,
+    RampsOrderStatus.IdExpired,
+  ])('returns true for terminal status %s', (status) => {
+    expect(isTerminalOrderStatus(status)).toBe(true);
+  });
+
+  it.each([
+    RampsOrderStatus.Unknown,
+    RampsOrderStatus.Precreated,
+    RampsOrderStatus.Created,
+    RampsOrderStatus.Pending,
+  ])('returns false for non-terminal status %s', (status) => {
+    expect(isTerminalOrderStatus(status)).toBe(false);
+  });
+});
diff --git a/packages/ramps-controller/src/orderStatus.ts b/packages/ramps-controller/src/orderStatus.ts
new file mode 100644
index 0000000000..aacd1fc42a
--- /dev/null
+++ b/packages/ramps-controller/src/orderStatus.ts
@@ -0,0 +1,32 @@
+import { RampsOrderStatus } from './RampsService.js';
+
+/**
+ * Order statuses that no longer require polling or in-flow navigation.
+ * Shared by the controller and consuming clients so terminal checks stay in sync.
+ */
+export const TERMINAL_ORDER_STATUSES: ReadonlySet<RampsOrderStatus> = new Set([
+  RampsOrderStatus.Completed,
+  RampsOrderStatus.Failed,
+  RampsOrderStatus.Cancelled,
+  RampsOrderStatus.IdExpired,
+]);
+
+/**
+ * Whether a ramps order has reached a terminal status.
+ *
+ * @param status - The order status to test.
+ * @returns Whether the status is terminal.
+ */
+export function isTerminalOrderStatus(status: RampsOrderStatus): boolean {
+  return TERMINAL_ORDER_STATUSES.has(status);
+}
+
+/**
+ * Order statuses that are still in progress and may be polled.
+ */
+export const PENDING_ORDER_STATUSES: ReadonlySet<RampsOrderStatus> = new Set([
+  RampsOrderStatus.Pending,
+  RampsOrderStatus.Created,
+  RampsOrderStatus.Unknown,
+  RampsOrderStatus.Precreated,
+]);