diff --git a/src/__tests__/linkup-client.test.ts b/src/__tests__/linkup-client.test.ts
index 9dc5f0e..cadbc56 100644
--- a/src/__tests__/linkup-client.test.ts
+++ b/src/__tests__/linkup-client.test.ts
@@ -745,6 +745,19 @@ describe('LinkupClient', () => {
           statusCode: 429,
         },
       },
+      {
+        description: '429 EXCEED_BUDGET_LIMIT',
+        ErrorClass: LinkupInsufficientCreditError,
+        expectedMessage: 'The API key has reached its budget limit.',
+        input: {
+          error: {
+            code: 'EXCEED_BUDGET_LIMIT',
+            details: [],
+            message: 'The API key has reached its budget limit.',
+          },
+          statusCode: 429,
+        },
+      },
       {
         description: '429 TOO_MANY_REQUESTS',
         ErrorClass: LinkupTooManyRequestsError,
diff --git a/src/utils/refine-error.utils.ts b/src/utils/refine-error.utils.ts
index 2beadfc..e0d15fa 100644
--- a/src/utils/refine-error.utils.ts
+++ b/src/utils/refine-error.utils.ts
@@ -57,6 +57,7 @@ export const refineError = (e: LinkupApiError): LinkupError => {
     case 429:
       switch (code) {
         case 'INSUFFICIENT_FUNDS_CREDITS':
+        case 'EXCEED_BUDGET_LIMIT':
           return new LinkupInsufficientCreditError(message);
         case 'TOO_MANY_REQUESTS':
           return new LinkupTooManyRequestsError(message);