diff --git a/frontend_tests/node_tests/lib/events.js b/frontend_tests/node_tests/lib/events.js
index cf9650e00b..01288cf6b9 100644
--- a/frontend_tests/node_tests/lib/events.js
+++ b/frontend_tests/node_tests/lib/events.js
@@ -489,6 +489,7 @@ exports.fixtures = {
             is_admin: false,
             is_active: true,
             is_owner: false,
+            is_billing_admin: false,
             role: 400,
             is_bot: false,
             is_guest: false,
diff --git a/frontend_tests/node_tests/people.js b/frontend_tests/node_tests/people.js
index 697eae3a56..e449c98280 100644
--- a/frontend_tests/node_tests/people.js
+++ b/frontend_tests/node_tests/people.js
@@ -90,6 +90,7 @@ const realm_admin = {
     is_admin: true,
     is_guest: false,
     is_moderator: false,
+    is_billing_admin: true,
     is_bot: false,
     role: 200,
 };
@@ -102,6 +103,7 @@ const guest = {
     is_admin: false,
     is_guest: true,
     is_moderator: false,
+    is_billing_admin: false,
     is_bot: false,
     role: 600,
 };
@@ -114,6 +116,7 @@ const realm_owner = {
     is_admin: true,
     is_guest: false,
     is_moderator: false,
+    is_billing_admin: false,
     is_bot: false,
     role: 100,
 };
@@ -133,6 +136,7 @@ const moderator = {
     is_owner: false,
     is_admin: false,
     is_guest: false,
+    is_billing_admin: false,
     is_moderator: true,
     is_bot: false,
     role: 300,
diff --git a/frontend_tests/node_tests/user_events.js b/frontend_tests/node_tests/user_events.js
index 94cc8ae2b8..7bd839714d 100644
--- a/frontend_tests/node_tests/user_events.js
+++ b/frontend_tests/node_tests/user_events.js
@@ -57,6 +57,7 @@ const me = {
     user_id: 30,
     full_name: "Me Myself",
     is_admin: true,
+    role: settings_config.user_role_values.member.code,
 };
 
 function initialize() {
@@ -118,6 +119,26 @@ run_test("updates", () => {
     assert.equal(person.is_owner, true);
     assert.equal(person.role, settings_config.user_role_values.owner.code);
 
+    user_events.update_person({user_id: me.user_id, is_billing_admin: true});
+    person = people.get_by_email(me.email);
+    assert(person.is_billing_admin);
+    assert.equal(person.role, settings_config.user_role_values.member.code);
+    assert(page_params.is_billing_admin);
+
+    user_events.update_person({user_id: me.user_id, is_billing_admin: false});
+    person = people.get_by_email(me.email);
+    assert.equal(person.user_id, me.user_id);
+    assert(!person.is_billing_admin);
+    assert.equal(person.role, settings_config.user_role_values.member.code);
+    assert(!page_params.is_billing_admin);
+
+    user_events.update_person({user_id: isaac.user_id, is_billing_admin: false});
+    person = people.get_by_email(isaac.email);
+    assert.equal(person.user_id, isaac.user_id);
+    assert(!person.is_billing_admin);
+    assert.equal(person.role, settings_config.user_role_values.owner.code);
+    assert(!page_params.is_billing_admin);
+
     let user_id;
     let full_name;
     message_live_update.update_user_full_name = (user_id_arg, full_name_arg) => {
diff --git a/static/js/user_events.js b/static/js/user_events.js
index 447995c160..48db800388 100644
--- a/static/js/user_events.js
+++ b/static/js/user_events.js
@@ -96,6 +96,13 @@ export const update_person = function update(person) {
         }
     }
 
+    if (Object.prototype.hasOwnProperty.call(person, "is_billing_admin")) {
+        person_obj.is_billing_admin = person.is_billing_admin;
+        if (people.is_my_user_id(person.user_id)) {
+            page_params.is_billing_admin = person_obj.is_billing_admin;
+        }
+    }
+
     if (Object.prototype.hasOwnProperty.call(person, "avatar_url")) {
         const url = person.avatar_url;
         person_obj.avatar_url = url;
diff --git a/templates/zerver/api/changelog.md b/templates/zerver/api/changelog.md
index 0f591a065a..70b4e15a2f 100644
--- a/templates/zerver/api/changelog.md
+++ b/templates/zerver/api/changelog.md
@@ -11,6 +11,17 @@ below features are supported.
 
 ## Changes in Zulip 5.0
 
+**Feature level 73**
+
+* [`GET /users`](/api/get-users), [`GET /users/{user_id}`](/api/get-user),
+  [`GET /users/{email}`](/api/get-user-by-email) and
+  [`GET /users/me`](/api/get-own-user): Added `is_billing_admin` field to
+  returned user objects.
+* [`GET /events`](/api/get-events): Added `is_billing_admin` field to
+  user objects sent in `realm_user` events.
+* [`POST /register`](/api/register-queue): Added `is_billing_admin` field
+  in the user objects returned in the `realm_users` field.
+
 **Feature level 72**
 
 * [`POST /register`](/api/register-queue): Renamed `max_icon_file_size` to
diff --git a/version.py b/version.py
index 90681232f8..1ba3fb3e43 100644
--- a/version.py
+++ b/version.py
@@ -33,7 +33,7 @@ DESKTOP_WARNING_VERSION = "5.4.3"
 # Changes should be accompanied by documentation explaining what the
 # new level means in templates/zerver/api/changelog.md, as well as
 # "**Changes**" entries in the endpoint's documentation in `zulip.yaml`.
-API_FEATURE_LEVEL = 72
+API_FEATURE_LEVEL = 73
 
 # Bump the minor PROVISION_VERSION to indicate that folks should provision
 # only when going from an old version of the code to a newer version. Bump
diff --git a/zerver/lib/actions.py b/zerver/lib/actions.py
index b7152ebf08..d2fe26d1c3 100644
--- a/zerver/lib/actions.py
+++ b/zerver/lib/actions.py
@@ -4562,6 +4562,10 @@ def do_change_user_role(
 def do_make_user_billing_admin(user_profile: UserProfile) -> None:
     user_profile.is_billing_admin = True
     user_profile.save(update_fields=["is_billing_admin"])
+    event = dict(
+        type="realm_user", op="update", person=dict(user_id=user_profile.id, is_billing_admin=True)
+    )
+    send_event(user_profile.realm, event, active_user_ids(user_profile.realm_id))
 
 
 def do_change_can_forge_sender(user_profile: UserProfile, value: bool) -> None:
diff --git a/zerver/lib/cache.py b/zerver/lib/cache.py
index d7cd8781ef..35334543de 100644
--- a/zerver/lib/cache.py
+++ b/zerver/lib/cache.py
@@ -519,6 +519,7 @@ realm_user_dict_fields: List[str] = [
     "avatar_version",
     "is_active",
     "role",
+    "is_billing_admin",
     "is_bot",
     "realm_id",
     "timezone",
diff --git a/zerver/lib/event_schema.py b/zerver/lib/event_schema.py
index 8b6f2afd57..6df982bb01 100644
--- a/zerver/lib/event_schema.py
+++ b/zerver/lib/event_schema.py
@@ -1010,6 +1010,7 @@ realm_user_type = DictType(
         ("avatar_version", int),
         ("full_name", str),
         ("is_admin", bool),
+        ("is_billing_admin", bool),
         ("is_owner", bool),
         ("is_bot", bool),
         ("is_guest", bool),
@@ -1100,6 +1101,13 @@ realm_user_person_types = dict(
             ("full_name", str),
         ],
     ),
+    is_billing_admin=DictType(
+        required_keys=[
+            # vertical formatting
+            ("user_id", int),
+            ("is_billing_admin", bool),
+        ],
+    ),
     role=DictType(
         required_keys=[
             # vertical formatting
diff --git a/zerver/lib/events.py b/zerver/lib/events.py
index f2f11a7231..60867d46a6 100644
--- a/zerver/lib/events.py
+++ b/zerver/lib/events.py
@@ -339,6 +339,7 @@ def fetch_initial_state_data(
             # restrictions apply to these users as well, and it lets
             # us avoid unnecessary conditionals.
             role=UserProfile.ROLE_GUEST,
+            is_billing_admin=False,
             avatar_source=UserProfile.AVATAR_FROM_GRAVATAR,
             # ID=0 is not used in real Zulip databases, ensuring this is unique.
             id=0,
@@ -375,6 +376,7 @@ def fetch_initial_state_data(
         state["is_owner"] = settings_user.is_realm_owner
         state["is_moderator"] = settings_user.is_moderator
         state["is_guest"] = settings_user.is_guest
+        state["is_billing_admin"] = settings_user.is_billing_admin
         state["user_id"] = settings_user.id
         state["enter_sends"] = settings_user.enter_sends
         state["email"] = settings_user.email
@@ -671,7 +673,7 @@ def apply_event(
                             user_profile, include_all_active=user_profile.is_realm_admin
                         )
 
-                for field in ["delivery_email", "email", "full_name"]:
+                for field in ["delivery_email", "email", "full_name", "is_billing_admin"]:
                     if field in person and field in state:
                         state[field] = person[field]
 
@@ -706,6 +708,8 @@ def apply_event(
                         p["is_admin"] = is_administrator_role(person["role"])
                         p["is_owner"] = person["role"] == UserProfile.ROLE_REALM_OWNER
                         p["is_guest"] = person["role"] == UserProfile.ROLE_GUEST
+                    if "is_billing_admin" in person:
+                        p["is_billing_admin"] = person["is_billing_admin"]
                     if "custom_profile_field" in person:
                         custom_field_id = person["custom_profile_field"]["id"]
                         custom_field_new_value = person["custom_profile_field"]["value"]
diff --git a/zerver/lib/users.py b/zerver/lib/users.py
index 309dda19bf..d4a0162f11 100644
--- a/zerver/lib/users.py
+++ b/zerver/lib/users.py
@@ -395,6 +395,7 @@ def format_user_row(
         is_admin=is_admin,
         is_owner=is_owner,
         is_guest=is_guest,
+        is_billing_admin=row["is_billing_admin"],
         role=row["role"],
         is_bot=is_bot,
         full_name=row["full_name"],
diff --git a/zerver/openapi/zulip.yaml b/zerver/openapi/zulip.yaml
index 208a00557e..115f57385b 100644
--- a/zerver/openapi/zulip.yaml
+++ b/zerver/openapi/zulip.yaml
@@ -396,6 +396,21 @@ paths:
                                             - 300
                                             - 400
                                             - 600
+                                    - type: object
+                                      additionalProperties: false
+                                      description: |
+                                        When billing role of a user changes.
+                                      properties:
+                                        user_id:
+                                          type: integer
+                                          description: |
+                                            The ID of the user affected by this change.
+                                        is_billing_admin:
+                                          type: boolean
+                                          description: |
+                                            A boolean specifying whether the user is now a billing administrator.
+
+                                            **Changes**: New in Zulip 5.0 (feature level 73).
                                     - type: object
                                       additionalProperties: false
                                       description: |
@@ -818,6 +833,7 @@ paths:
                                       "is_admin": false,
                                       "is_owner": false,
                                       "is_guest": false,
+                                      "is_billing_admin": false,
                                       "role": 400,
                                       "is_bot": false,
                                       "full_name": "full name",
@@ -5099,6 +5115,7 @@ paths:
                               "email": "AARON@zulip.com",
                               "is_admin": false,
                               "is_owner": false,
+                              "is_billing_admin": false,
                               "role": 400,
                               "avatar_url": "https://secure.gravatar.com/avatar/818c212b9f8830dfef491b3f7da99a14?d=identicon&version=1",
                               "bot_type": null,
@@ -5143,6 +5160,7 @@ paths:
                               "timezone": "",
                               "is_admin": false,
                               "is_owner": false,
+                              "is_billing_admin": false,
                               "role": 400,
                               "avatar_url": "https://secure.gravatar.com/avatar/6d8cad0fd00256e7b40691d27ddfd466?d=identicon&version=1",
                               "is_active": true,
@@ -5158,6 +5176,7 @@ paths:
                               "avatar_url": "https://secure.gravatar.com/avatar/7328586831cdbb1627649bd857b1ee8c?d=identicon&version=1",
                               "is_admin": false,
                               "is_owner": false,
+                              "is_billing_admin": false,
                               "role": 400,
                               "user_id": 23,
                               "bot_type": 1,
@@ -5407,6 +5426,14 @@ paths:
 
                           **Changes**: New in Zulip 3.0 (feature level 8).
                         example: false
+                      is_billing_admin:
+                        type: boolean
+                        description: |
+                          A boolean indicating if the requesting user is
+                          a billing administrator.
+
+                          **Changes**: New in Zulip 5.0 (feature level 73).
+                        example: false
                       role:
                         type: integer
                         enum:
@@ -5496,6 +5523,7 @@ paths:
                         "is_owner": false,
                         "role": 200,
                         "is_guest": false,
+                        "is_billing_admin": false,
                         "is_bot": false,
                         "is_active": true,
                         "timezone": "",
@@ -6719,6 +6747,7 @@ paths:
                             "timezone": "",
                             "is_admin": false,
                             "is_owner": false,
+                            "is_billing_admin": false,
                             "role": 400,
                             "avatar_url": "https://secure.gravatar.com/avatar/6d8cad0fd00256e7b40691d27ddfd466?d=identicon&version=1",
                             "is_active": true,
@@ -6795,6 +6824,7 @@ paths:
                             "timezone": "",
                             "is_admin": false,
                             "is_owner": false,
+                            "is_billing_admin": false,
                             "role": 400,
                             "avatar_url": "https://secure.gravatar.com/avatar/6d8cad0fd00256e7b40691d27ddfd466?d=identicon&version=1",
                             "is_active": true,
@@ -9049,6 +9079,14 @@ paths:
                           Present if `realm_user` is present in `fetch_event_types`.
 
                           Whether the current user is an [organization owner](/help/roles-and-permissions).
+                      is_billing_admin:
+                        type: boolean
+                        description: |
+                          Present if `realm_user` is present in `fetch_event_types`.
+
+                          Whether the current user is a billing administrator.
+
+                          **Changes**: New in Zulip 5.0 (feature level 73).
                       is_moderator:
                         type: boolean
                         description: |
@@ -9120,6 +9158,7 @@ paths:
                                 full_name: {}
                                 is_admin: {}
                                 is_owner: {}
+                                is_billing_admin: {}
                                 role: {}
                                 bot_type: {}
                                 user_id: {}
@@ -11814,6 +11853,7 @@ components:
             full_name: {}
             is_admin: {}
             is_owner: {}
+            is_billing_admin: {}
             role: {}
             bot_type: {}
             user_id: {}
@@ -11872,6 +11912,12 @@ components:
             If true, is_admin will also be true.
 
             **Changes**: New in Zulip 3.0 (feature level 8).
+        is_billing_admin:
+          type: boolean
+          description: |
+            A boolean specifying whether the user is a billing administrator.
+
+            **Changes**: New in Zulip 5.0 (feature level 73).
         role:
           type: integer
           enum:
diff --git a/zerver/tests/test_custom_profile_data.py b/zerver/tests/test_custom_profile_data.py
index 15e7ed2eb8..db1fb0e71e 100644
--- a/zerver/tests/test_custom_profile_data.py
+++ b/zerver/tests/test_custom_profile_data.py
@@ -780,6 +780,7 @@ class ListCustomProfileFieldTest(CustomProfileFieldTestCase):
             "avatar_version",
             "is_admin",
             "is_guest",
+            "is_billing_admin",
             "is_bot",
             "is_owner",
             "role",
@@ -802,6 +803,7 @@ class ListCustomProfileFieldTest(CustomProfileFieldTestCase):
             "is_guest",
             "is_bot",
             "is_owner",
+            "is_billing_admin",
             "role",
             "full_name",
             "timezone",
@@ -834,6 +836,7 @@ class ListCustomProfileFieldTest(CustomProfileFieldTestCase):
             "is_bot",
             "is_admin",
             "is_owner",
+            "is_billing_admin",
             "role",
             "profile_data",
             "avatar_version",
diff --git a/zerver/tests/test_events.py b/zerver/tests/test_events.py
index 3cfb451c03..f6a1589ae4 100644
--- a/zerver/tests/test_events.py
+++ b/zerver/tests/test_events.py
@@ -58,6 +58,7 @@ from zerver.lib.actions import (
     do_deactivate_user,
     do_delete_messages,
     do_invite_users,
+    do_make_user_billing_admin,
     do_mark_hotspot_as_read,
     do_mute_topic,
     do_mute_user,
@@ -1289,6 +1290,18 @@ class NormalActionsTest(BaseAction):
             check_realm_user_update("events[0]", events[0], "role")
             self.assertEqual(events[0]["person"]["role"], role)
 
+    def test_change_is_billing_admin(self) -> None:
+        reset_emails_in_zulip_realm()
+
+        # Important: We need to refresh from the database here so that
+        # we don't have a stale UserProfile object with an old value
+        # for email being passed into this next function.
+        self.user_profile.refresh_from_db()
+
+        events = self.verify_action(lambda: do_make_user_billing_admin(self.user_profile))
+        check_realm_user_update("events[0]", events[0], "is_billing_admin")
+        self.assertEqual(events[0]["person"]["is_billing_admin"], True)
+
     def test_change_is_owner(self) -> None:
         reset_emails_in_zulip_realm()
 
diff --git a/zerver/tests/test_home.py b/zerver/tests/test_home.py
index 65c1c2faff..19cb133f73 100644
--- a/zerver/tests/test_home.py
+++ b/zerver/tests/test_home.py
@@ -93,6 +93,7 @@ class HomeTest(ZulipTestCase):
         "hotspots",
         "insecure_desktop_app",
         "is_admin",
+        "is_billing_admin",
         "is_guest",
         "is_moderator",
         "is_owner",
@@ -635,6 +636,7 @@ class HomeTest(ZulipTestCase):
                         is_bot=True,
                         is_admin=False,
                         is_owner=False,
+                        is_billing_admin=False,
                         role=email_gateway_bot.role,
                         is_cross_realm_bot=True,
                         is_guest=False,
@@ -650,6 +652,7 @@ class HomeTest(ZulipTestCase):
                         is_bot=True,
                         is_admin=False,
                         is_owner=False,
+                        is_billing_admin=False,
                         role=notification_bot.role,
                         is_cross_realm_bot=True,
                         is_guest=False,
@@ -665,6 +668,7 @@ class HomeTest(ZulipTestCase):
                         is_bot=True,
                         is_admin=False,
                         is_owner=False,
+                        is_billing_admin=False,
                         role=welcome_bot.role,
                         is_cross_realm_bot=True,
                         is_guest=False,