diff --git a/.changeset/shaky-books-occur.md b/.changeset/shaky-books-occur.md
new file mode 100644
index 00000000000..a845151cc84
--- /dev/null
+++ b/.changeset/shaky-books-occur.md
@@ -0,0 +1,2 @@
+---
+---
diff --git a/packages/clerk-js/src/core/resources/SignIn.ts b/packages/clerk-js/src/core/resources/SignIn.ts
index 5f9e53b58c2..480c426ee52 100644
--- a/packages/clerk-js/src/core/resources/SignIn.ts
+++ b/packages/clerk-js/src/core/resources/SignIn.ts
@@ -612,6 +612,8 @@ class SignInFuture implements SignInFutureResource {
     verifyBackupCode: this.verifyBackupCode.bind(this),
   };
 
+  #hasBeenFinalized = false;
+
   constructor(readonly resource: SignIn) {}
 
   get id() {
@@ -667,6 +669,10 @@ class SignInFuture implements SignInFutureResource {
     return this.resource.secondFactorVerification;
   }
 
+  get hasBeenFinalized() {
+    return this.#hasBeenFinalized;
+  }
+
   async sendResetPasswordEmailCode(): Promise<{ error: unknown }> {
     return runAsyncResourceTask(this.resource, async () => {
       if (!this.resource.id) {
@@ -1120,6 +1126,7 @@ class SignInFuture implements SignInFutureResource {
       // Reload the client to prevent an issue where the created session is not picked up.
       await SignIn.clerk.client?.reload();
 
+      this.#hasBeenFinalized = true;
       await SignIn.clerk.setActive({ session: this.resource.createdSessionId, navigate });
     });
   }
diff --git a/packages/clerk-js/src/core/resources/SignUp.ts b/packages/clerk-js/src/core/resources/SignUp.ts
index 9b01c5d406b..141d768ee6f 100644
--- a/packages/clerk-js/src/core/resources/SignUp.ts
+++ b/packages/clerk-js/src/core/resources/SignUp.ts
@@ -576,6 +576,8 @@ class SignUpFuture implements SignUpFutureResource {
     verifyPhoneCode: this.verifyPhoneCode.bind(this),
   };
 
+  #hasBeenFinalized = false;
+
   constructor(readonly resource: SignUp) {}
 
   get id() {
@@ -676,6 +678,10 @@ class SignUpFuture implements SignUpFutureResource {
     return undefined;
   }
 
+  get hasBeenFinalized() {
+    return this.#hasBeenFinalized;
+  }
+
   private async getCaptchaToken(): Promise<{
     captchaToken?: string;
     captchaWidgetType?: CaptchaWidgetType;
@@ -900,6 +906,7 @@ class SignUpFuture implements SignUpFutureResource {
         throw new Error('Cannot finalize sign-up without a created session.');
       }
 
+      this.#hasBeenFinalized = true;
       await SignUp.clerk.setActive({ session: this.resource.createdSessionId, navigate });
     });
   }
diff --git a/packages/clerk-js/src/core/state.ts b/packages/clerk-js/src/core/state.ts
index 82fed3485ac..2d37bb42008 100644
--- a/packages/clerk-js/src/core/state.ts
+++ b/packages/clerk-js/src/core/state.ts
@@ -48,10 +48,18 @@ export class State implements StateInterface {
 
   private onResourceUpdated = (payload: { resource: BaseResource }) => {
     if (payload.resource instanceof SignIn) {
+      const previousResource = this.signInResourceSignal().resource;
+      if (shouldIgnoreNullUpdate(previousResource, payload.resource)) {
+        return;
+      }
       this.signInResourceSignal({ resource: payload.resource });
     }
 
     if (payload.resource instanceof SignUp) {
+      const previousResource = this.signUpResourceSignal().resource;
+      if (shouldIgnoreNullUpdate(previousResource, payload.resource)) {
+        return;
+      }
       this.signUpResourceSignal({ resource: payload.resource });
     }
   };
@@ -66,3 +74,13 @@ export class State implements StateInterface {
     }
   };
 }
+
+/**
+ * Returns true if the new resource is null and the previous resource has not been finalized. This is used to prevent
+ * nullifying the resource after it's been completed.
+ */
+function shouldIgnoreNullUpdate(previousResource: SignIn | null, newResource: SignIn | null): boolean;
+function shouldIgnoreNullUpdate(previousResource: SignUp | null, newResource: SignUp | null): boolean;
+function shouldIgnoreNullUpdate(previousResource: SignIn | SignUp | null, newResource: SignIn | SignUp | null) {
+  return !newResource?.id && previousResource && previousResource.__internal_future?.hasBeenFinalized === false;
+}
diff --git a/packages/react/src/stateProxy.ts b/packages/react/src/stateProxy.ts
index dcb8c59cf0e..19708c1badd 100644
--- a/packages/react/src/stateProxy.ts
+++ b/packages/react/src/stateProxy.ts
@@ -105,6 +105,9 @@ export class StateProxy implements State {
             },
           });
         },
+        get hasBeenFinalized() {
+          return gateProperty(target, 'hasBeenFinalized', false);
+        },
 
         create: this.gateMethod(target, 'create'),
         password: this.gateMethod(target, 'password'),
@@ -207,6 +210,9 @@ export class StateProxy implements State {
         get isTransferable() {
           return gateProperty(target, 'isTransferable', false);
         },
+        get hasBeenFinalized() {
+          return gateProperty(target, 'hasBeenFinalized', false);
+        },
 
         create: gateMethod(target, 'create'),
         update: gateMethod(target, 'update'),
diff --git a/packages/shared/src/types/signInFuture.ts b/packages/shared/src/types/signInFuture.ts
index 8a11ea7d7d7..6b6dd56b241 100644
--- a/packages/shared/src/types/signInFuture.ts
+++ b/packages/shared/src/types/signInFuture.ts
@@ -296,6 +296,13 @@ export interface SignInFutureResource {
    */
   readonly userData: UserData;
 
+  /**
+   * Indicates that the sign-in has been finalized.
+   *
+   * @internal
+   */
+  readonly hasBeenFinalized: boolean;
+
   /**
    * Creates a new `SignIn` instance initialized with the provided parameters. The instance maintains the sign-in
    * lifecycle state through its `status` property, which updates as the authentication flow progresses.
diff --git a/packages/shared/src/types/signUpFuture.ts b/packages/shared/src/types/signUpFuture.ts
index 9559d0a4821..9e90cfe21d5 100644
--- a/packages/shared/src/types/signUpFuture.ts
+++ b/packages/shared/src/types/signUpFuture.ts
@@ -354,6 +354,13 @@ export interface SignUpFutureResource {
    */
   readonly locale: string | null;
 
+  /**
+   * Indicates that the sign-up has been finalized.
+   *
+   * @internal
+   */
+  readonly hasBeenFinalized: boolean;
+
   /**
    * Creates a new `SignUp` instance initialized with the provided parameters. The instance maintains the sign-up
    * lifecycle state through its `status` property, which updates as the authentication flow progresses. Will also