diff --git a/src/lib/isVAT.js b/src/lib/isVAT.js
index ece7d8560..a8e2611b6 100644
--- a/src/lib/isVAT.js
+++ b/src/lib/isVAT.js
@@ -75,7 +75,7 @@ export const vatMatchers = {
   IN: str => /^(IN)?\d{15}$/.test(str),
   ID: str => /^(ID)?(\d{15}|(\d{2}.\d{3}.\d{3}.\d{1}-\d{3}.\d{3}))$/.test(str),
   IL: str => /^(IL)?\d{9}$/.test(str),
-  KZ: str => /^(KZ)?\d{9}$/.test(str),
+  KZ: str => /^(KZ)?\d{12}$/.test(str),
   NZ: str => /^(NZ)?\d{9}$/.test(str),
   NG: str => /^(NG)?(\d{12}|(\d{8}-\d{4}))$/.test(str),
   NO: str => /^(NO)?\d{9}MVA$/.test(str),
diff --git a/test/validators.test.js b/test/validators.test.js
index a2942f32c..049a16708 100644
--- a/test/validators.test.js
+++ b/test/validators.test.js
@@ -14175,11 +14175,11 @@ describe('Validators', () => {
       validator: 'isVAT',
       args: ['KZ'],
       valid: [
-        'KZ123456789',
-        '123456789',
+        'KZ123456789012',
+        '123456789012',
       ],
       invalid: [
-        'KZ 123456789',
+        'KZ 123456789012',
         '12345678',
       ],
     });