diff --git a/corporate/lib/stripe.py b/corporate/lib/stripe.py
index ca719b96d8..442df4affb 100644
--- a/corporate/lib/stripe.py
+++ b/corporate/lib/stripe.py
@@ -3145,10 +3145,6 @@ def is_realm_on_free_trial(realm: Realm) -> bool:
     return plan is not None and plan.is_free_trial()
 
 
-def is_sponsored_realm(realm: Realm) -> bool:
-    return realm.plan_type == Realm.PLAN_TYPE_STANDARD_FREE
-
-
 def do_change_plan_status(plan: CustomerPlan, status: int) -> None:
     plan.status = status
     plan.save(update_fields=["status"])
diff --git a/corporate/tests/test_stripe.py b/corporate/tests/test_stripe.py
index 863d25a3b5..6c4d8c5930 100644
--- a/corporate/tests/test_stripe.py
+++ b/corporate/tests/test_stripe.py
@@ -67,7 +67,6 @@ from corporate.lib.stripe import (
     invoice_plans_as_needed,
     is_free_trial_offer_enabled,
     is_realm_on_free_trial,
-    is_sponsored_realm,
     next_month,
     sign_string,
     stripe_customer_has_credit_card_as_default_payment_method,
@@ -4558,14 +4557,6 @@ class BillingHelpersTest(ZulipTestCase):
         plan.save(update_fields=["status"])
         self.assertTrue(is_realm_on_free_trial(realm))
 
-    def test_is_sponsored_realm(self) -> None:
-        realm = get_realm("zulip")
-        self.assertFalse(is_sponsored_realm(realm))
-
-        realm.plan_type = Realm.PLAN_TYPE_STANDARD_FREE
-        realm.save()
-        self.assertTrue(is_sponsored_realm(realm))
-
     def test_change_remote_server_plan_type(self) -> None:
         server_uuid = str(uuid.uuid4())
         remote_server = RemoteZulipServer.objects.create(