diff --git a/app/actions/data.ts b/app/actions/data.ts
index 5948946..a1316c4 100644
--- a/app/actions/data.ts
+++ b/app/actions/data.ts
@@ -76,7 +76,7 @@ async function loadData<T>(type: DataType): Promise<T> {
       await fs.access(filePath)
     } catch {
       // File doesn't exist, create it with default data
-      const initialData = getDefaultData(type)
+      const initialData = getDefaultData<T>(type)
       await fs.writeFile(filePath, JSON.stringify(initialData, null, 2))
       return initialData as T
     }
@@ -136,7 +136,7 @@ async function calculateServerFreshnessToken(): Promise<string | null> {
 // Wishlist specific functions
 export async function loadWishlistData(): Promise<WishlistData> {
   const user = await getCurrentUser()
-  if (!user) return getDefaultWishlistData()
+  if (!user) return getDefaultWishlistData<WishlistData>()
 
   const data = await loadData<WishlistData>('wishlist')
   return {
@@ -173,7 +173,7 @@ export async function saveWishlistItems(data: WishlistData): Promise<void> {
 // Habits specific functions
 export async function loadHabitsData(): Promise<HabitsData> {
   const user = await getCurrentUser()
-  if (!user) return getDefaultHabitsData()
+  if (!user) return getDefaultHabitsData<HabitsData>()
   const data = await loadData<HabitsData>('habits')
   return {
     habits: data.habits.filter(x => user.isAdmin || x.userIds?.includes(user.id))
@@ -208,14 +208,14 @@ export async function saveHabitsData(data: HabitsData): Promise<void> {
 export async function loadCoinsData(): Promise<CoinsData> {
   try {
     const user = await getCurrentUser()
-    if (!user) return getDefaultCoinsData()
+    if (!user) return getDefaultCoinsData<CoinsData>()
     const data = await loadData<CoinsData>('coins')
     return {
       ...data,
       transactions: user.isAdmin ? data.transactions : data.transactions.filter(x => x.userId === user.id)
     }
   } catch {
-    return getDefaultCoinsData()
+    return getDefaultCoinsData<CoinsData>()
   }
 }
 
@@ -278,7 +278,7 @@ export async function addCoins({
 }
 
 export async function loadSettings(): Promise<Settings> {
-  const defaultSettings = getDefaultSettings()
+  const defaultSettings = getDefaultSettings<Settings>()
 
   try {
     const user = await getCurrentUser()
@@ -370,7 +370,7 @@ export async function loadUsersData(): Promise<UserData> {
   try {
     return await loadData<UserData>('auth')
   } catch {
-    return getDefaultUsersData()
+    return getDefaultUsersData<UserData>()
   }
 }
 
diff --git a/lib/atoms.ts b/lib/atoms.ts
index 750a5fa..423a127 100644
--- a/lib/atoms.ts
+++ b/lib/atoms.ts
@@ -16,6 +16,7 @@ import { atom } from "jotai";
 import { atomFamily, atomWithStorage } from "jotai/utils";
 import { DateTime } from "luxon";
 import {
+  CoinsData,
   CompletionCache,
   Freq,
   getDefaultCoinsData,
@@ -25,7 +26,12 @@ import {
   getDefaultUsersData,
   getDefaultWishlistData,
   Habit,
-  UserId
+  HabitsData,
+  ServerSettings,
+  Settings,
+  UserData,
+  UserId,
+  WishlistData
 } from "./types";
 
 export interface BrowserSettings {
@@ -40,12 +46,12 @@ export const browserSettingsAtom = atomWithStorage('browserSettings', {
   expandedWishlist: false
 } as BrowserSettings)
 
-export const usersAtom = atom(getDefaultUsersData())
-export const settingsAtom = atom(getDefaultSettings());
-export const habitsAtom = atom(getDefaultHabitsData());
-export const coinsAtom = atom(getDefaultCoinsData());
-export const wishlistAtom = atom(getDefaultWishlistData());
-export const serverSettingsAtom = atom(getDefaultServerSettings());
+export const usersAtom = atom(getDefaultUsersData<UserData>())
+export const settingsAtom = atom(getDefaultSettings<Settings>());
+export const habitsAtom = atom(getDefaultHabitsData<HabitsData>());
+export const coinsAtom = atom(getDefaultCoinsData<CoinsData>());
+export const wishlistAtom = atom(getDefaultWishlistData<WishlistData>());
+export const serverSettingsAtom = atom(getDefaultServerSettings<ServerSettings>());
 
 // Derived atom for coins earned today
 export const coinsEarnedTodayAtom = atom((get) => {
diff --git a/lib/types.ts b/lib/types.ts
index 51462d6..dca59f3 100644
--- a/lib/types.ts
+++ b/lib/types.ts
@@ -96,52 +96,58 @@ export interface WishlistData {
 }
 
 // Default value functions
-export const getDefaultUsersData = (): UserData => ({
-  users: [
-    {
-      id: crypto.randomUUID(),
-      username: 'admin',
-      // password: '', // No default password for admin initially? Or set a secure default?
-      isAdmin: true,
-      lastNotificationReadTimestamp: undefined, // Initialize as undefined
-    }
-  ]
-});
+export function getDefaultUsersData<UserData>(): UserData {
+  return {
+    users: [
+      {
+        id: crypto.randomUUID(),
+        username: 'admin',
+        // password: '', // No default password for admin initially? Or set a secure default?
+        isAdmin: true,
+        lastNotificationReadTimestamp: undefined, // Initialize as undefined
+      }
+    ]
+  } as UserData;
+};
 
-export const getDefaultHabitsData = (): HabitsData => ({
-  habits: []
-});
+export function getDefaultHabitsData<HabitsData>(): HabitsData {
+  return { habits: [] } as HabitsData;
+}
 
+export function getDefaultTasksData<TasksData>(): TasksData {
+  return { tasks: [] } as TasksData;
+};
 
-export const getDefaultCoinsData = (): CoinsData => ({
-  balance: 0,
-  transactions: []
-});
+export function getDefaultCoinsData<CoinsData>(): CoinsData {
+  return { balance: 0, transactions: [] } as CoinsData;
+};
 
-export const getDefaultWishlistData = (): WishlistData => ({
-  items: []
-});
+export function getDefaultWishlistData<WishlistData>(): WishlistData {
+  return { items: [] } as WishlistData;
+}
 
-export const getDefaultSettings = (): Settings => ({
-  ui: {
-    useNumberFormatting: true,
-    useGrouping: true,
-  },
-  system: {
-    timezone: Intl.DateTimeFormat().resolvedOptions().timeZone,
-    weekStartDay: 1, // Monday
-    autoBackupEnabled: true, // Add this line (default to true)
-    language: 'en', // Default language
-  },
-  profile: {}
-});
+export function getDefaultSettings<Settings>(): Settings {
+  return {
+    ui: {
+      useNumberFormatting: true,
+      useGrouping: true,
+    },
+    system: {
+      timezone: Intl.DateTimeFormat().resolvedOptions().timeZone,
+      weekStartDay: 1, // Monday
+      autoBackupEnabled: true, // Add this line (default to true)
+      language: 'en', // Default language
+    },
+    profile: {}
+  } as Settings;
+};
 
-export const getDefaultServerSettings = (): ServerSettings => ({
-  isDemo: false
-})
+export function getDefaultServerSettings<ServerSettings>(): ServerSettings {
+  return { isDemo: false } as ServerSettings;
+}
 
 // Map of data types to their default values
-export const DATA_DEFAULTS = {
+export const DATA_DEFAULTS: { [key: string]: <T>() => T } = {
   wishlist: getDefaultWishlistData,
   habits: getDefaultHabitsData,
   coins: getDefaultCoinsData,
diff --git a/lib/utils.test.ts b/lib/utils.test.ts
index 21bdac7..f0eb222 100644
--- a/lib/utils.test.ts
+++ b/lib/utils.test.ts
@@ -942,11 +942,11 @@ describe('convertMachineReadableFrequencyToHumanReadable', () => {
 })
 
 describe('freshness utilities', () => {
-  const mockSettings: Settings = getDefaultSettings();
-  const mockHabits: HabitsData = getDefaultHabitsData();
-  const mockCoins: CoinsData = getDefaultCoinsData();
-  const mockWishlist: WishlistData = getDefaultWishlistData();
-  const mockUsers: UserData = getDefaultUsersData();
+  const mockSettings: Settings = getDefaultSettings<Settings>();
+  const mockHabits: HabitsData = getDefaultHabitsData<HabitsData>();
+  const mockCoins: CoinsData = getDefaultCoinsData<CoinsData>();
+  const mockWishlist: WishlistData = getDefaultWishlistData<WishlistData>();
+  const mockUsers: UserData = getDefaultUsersData<UserData>();
 
   // Add a user to mockUsers for more realistic testing
   mockUsers.users.push({
@@ -991,11 +991,11 @@ describe('freshness utilities', () => {
     });
 
     test('should handle empty data consistently', () => {
-      const emptySettings = getDefaultSettings();
-      const emptyHabits = getDefaultHabitsData();
-      const emptyCoins = getDefaultCoinsData();
-      const emptyWishlist = getDefaultWishlistData();
-      const emptyUsers = getDefaultUsersData();
+      const emptySettings = getDefaultSettings<Settings>();
+      const emptyHabits = getDefaultHabitsData<HabitsData>();
+      const emptyCoins = getDefaultCoinsData<CoinsData>();
+      const emptyWishlist = getDefaultWishlistData<WishlistData>();
+      const emptyUsers = getDefaultUsersData<UserData>();
 
       const string1 = prepareDataForHashing(emptySettings, emptyHabits, emptyCoins, emptyWishlist, emptyUsers);
       const string2 = prepareDataForHashing(emptySettings, emptyHabits, emptyCoins, emptyWishlist, emptyUsers);