diff --git a/backend/api/admin/adminController.js b/backend/api/admin/adminController.js
index c463efe..e728fc9 100644
--- a/backend/api/admin/adminController.js
+++ b/backend/api/admin/adminController.js
@@ -51,4 +51,31 @@ const keysend = async (req, res) => {
     }
 }
 
-module.exports = { getAllBalances, addNewAccount, keysend };
+// Request body:
+// ```
+// {
+//   accountName: string,
+//   permissions: {
+//     isAdmin: boolean,
+//     hasAllowance: boolean,
+//     canSpend: boolean,
+//   }
+// }
+// ```
+const updatePermissions = async (req, res) => {
+    try {
+        // TODO: Input verification logic?
+        const accountName = req.body.accountName;
+        const newPermissions = req.body.permissions;
+        const response = await adminService.updatePermissions(accountName, newPermissions);
+        debug.info(`Response for updating a family member's permissions: ${JSON.stringify(response)}`);
+
+        if (!response.success) res.status(500).json(response);
+        else res.status(200).json(response);
+    } catch (error) {
+        debug.error(error.stack);
+        res.status(500).json({ message: error.message, error: error.stack });
+    }
+};
+
+module.exports = { getAllBalances, addNewAccount, keysend, updatePermissions };
diff --git a/backend/api/admin/adminService.js b/backend/api/admin/adminService.js
index dfc852a..4d78bb2 100644
--- a/backend/api/admin/adminService.js
+++ b/backend/api/admin/adminService.js
@@ -1,5 +1,5 @@
 const debug = require('../../utils/debug');
-const accounts = require('../../db/collection');
+const collection = require('../../db/collection');
 const senseiAdmin = require('../../sensei/admin');
 const senseiNodes = require('../../sensei/nodes');
 
@@ -18,4 +18,20 @@ const getAllBalances = async (req, res) => {
     }
 };
 
-module.exports = { getAllBalances };
+const updatePermissions = async (accountName, newPermissions) => {
+    const docName = 'nicks-family';
+    const subcollectionName = 'members';
+    const docRef = await collection.doc(docName).collection(subcollectionName).doc(accountName);
+    const doc = await docRef.get();
+    if (!doc.exists) {
+        const errMsg = `Firestore document "${docName}/${subcollectionName}/${accountName}" does not exist in the families collection`;
+        debug.error(errMsg);
+        throw new Error(errMsg);
+    }
+
+    // TODO: Error handling?
+    await docRef.update({permissions: newPermissions});
+    return { success: true };
+};
+
+module.exports = { getAllBalances, updatePermissions };
diff --git a/backend/api/admin/index.js b/backend/api/admin/index.js
index 1c6b6a1..dc9ce00 100644
--- a/backend/api/admin/index.js
+++ b/backend/api/admin/index.js
@@ -1,10 +1,11 @@
 const express = require('express');
 const router = express();
 
-const { getAllBalances, addNewAccount, keysend } = require('./adminController');
+const { getAllBalances, addNewAccount, keysend, updatePermissions } = require('./adminController');
 
 router.get('/balances', getAllBalances);
 router.post('/add', addNewAccount);
 router.post('/transfer', keysend);
+router.post('/permissions', updatePermissions)
 
 module.exports = router;