diff --git a/vocodes/src/v2/api/user/CreateAccount.ts b/vocodes/src/v2/api/user/CreateAccount.ts
new file mode 100644
index 0000000000..ee9d09d54b
--- /dev/null
+++ b/vocodes/src/v2/api/user/CreateAccount.ts
@@ -0,0 +1,59 @@
+
+import { ApiConfig } from "../../../common/ApiConfig";
+
+export interface CreateAccountRequest {
+  username: string,
+  email_address: string,
+  password: string,
+  password_confirmation: string,
+}
+
+export interface CreateAccountSuccessResponse {
+  success: boolean,
+}
+
+export interface CreateAccountErrorResponse {
+  success: boolean,
+  error_type: string,
+  error_fields: { [key: string]: string; },
+}
+
+type CreateAccountResponse = CreateAccountSuccessResponse | CreateAccountErrorResponse;
+
+export function CreateAccountIsSuccess(response: CreateAccountResponse): response is CreateAccountSuccessResponse {
+  return response?.success === true;
+}
+
+export function CreateAccountIsError(response: CreateAccountResponse): response is CreateAccountErrorResponse {
+  return response?.success === false;
+}
+
+export async function CreateAccount(request: CreateAccountRequest) : Promise<CreateAccountResponse> 
+{
+  const endpoint = new ApiConfig().createAccount();
+  
+  return await fetch(endpoint, {
+    method: 'POST',
+    headers: {
+      'Accept': 'application/json',
+      'Content-Type': 'application/json',
+    },
+    credentials: 'include',
+    body: JSON.stringify(request),
+  })
+  .then(res => res.json())
+  .then(res => {
+    if (!res) {
+      return { success : false };
+    }
+
+    if (res && 'success' in res) {
+      return res;
+    } else {
+      return { success : false };
+    }
+  })
+  .catch(e => {
+    return { success : false };
+  });
+}
diff --git a/vocodes/src/v2/api/user/GetUserByUsername.ts b/vocodes/src/v2/api/user/GetUserByUsername.ts
index 991495dc71..caf4a0b428 100644
--- a/vocodes/src/v2/api/user/GetUserByUsername.ts
+++ b/vocodes/src/v2/api/user/GetUserByUsername.ts
@@ -38,7 +38,6 @@ export interface ProfileBadge {
   granted_at: string,
 }
 
-
 export async function GetUserByUsername(username: string) : Promise<User | undefined> {
   const usernameLower = username.toLowerCase(); // NB: Until I standardize on display name vs username lookup.
   const endpoint = new ApiConfig().getProfile(usernameLower);
diff --git a/vocodes/src/v2/view/signup/SignupComponent.tsx b/vocodes/src/v2/view/signup/SignupComponent.tsx
index 08c100dd3c..b8a007a035 100644
--- a/vocodes/src/v2/view/signup/SignupComponent.tsx
+++ b/vocodes/src/v2/view/signup/SignupComponent.tsx
@@ -6,6 +6,7 @@ import { Link } from 'react-router-dom';
 import { Mode } from '../../../AppMode';
 import { SessionWrapper } from '../../../session/SessionWrapper';
 import { UserIcon } from '../_icons/UserIcon';
+import { CreateAccount, CreateAccountIsError, CreateAccountIsSuccess } from '../../api/user/CreateAccount';
 
 enum FieldTriState {
   EMPTY_FALSE,
@@ -187,7 +188,7 @@ class SignupComponent extends React.Component<Props, State> {
     return false;
   }
 
-  handleFormSubmit = (ev: React.FormEvent<HTMLFormElement>) : boolean => {
+  handleFormSubmit = async (ev: React.FormEvent<HTMLFormElement>) : Promise<boolean> => {
     ev.preventDefault();
 
     if (!this.state.usernameValid || 
@@ -197,39 +198,37 @@ class SignupComponent extends React.Component<Props, State> {
         return false;
     }
 
-    const api = new ApiConfig();
-    const endpointUrl = api.createAccount();
-    
     const request = {
       username: this.state.username,
       email_address: this.state.email,
       password: this.state.password,
       password_confirmation: this.state.passwordConfirmation,
+    };
+
+    const response = await CreateAccount(request);
+
+    if (CreateAccountIsError(response)) {
+      if ('email_address' in response.error_fields) {
+        this.setState({
+          emailValid: FieldTriState.FALSE,
+          emailInvalidReason: response.error_fields['email_address'] || "",
+        })
+      }
+      if ('username' in response.error_fields) {
+        this.setState({
+          usernameValid: FieldTriState.FALSE,
+          usernameInvalidReason: response.error_fields['username'] || "",
+        })
+      }
     }
 
-    fetch(endpointUrl, {
-      method: 'POST',
-      headers: {
-        'Accept': 'application/json',
-        'Content-Type': 'application/json',
-      },
-      credentials: 'include',
-      body: JSON.stringify(request),
-    })
-    .then(res => res.json())
-    .then(res => {
-      console.log('create account response', res)
-      if (res.success) {
-        console.log('querying new session');
-        this.props.querySessionCallback();
+    if (CreateAccountIsSuccess(response)) {
+      console.log('querying new session');
+      this.props.querySessionCallback();
 
-        // TODO: Switch to functional component.
-        window.location.href = '/';
-      }
-    })
-    .catch(e => {
-      //this.props.onSpeakErrorCallback();
-    });
+      // TODO: Switch to functional component.
+      window.location.href = '/';
+    }
 
     return false;
   }