diff --git a/frontend/src/components/home/Navigation.vue b/frontend/src/components/home/Navigation.vue
index 4d3259f95..aedbaae33 100644
--- a/frontend/src/components/home/Navigation.vue
+++ b/frontend/src/components/home/Navigation.vue
@@ -84,7 +84,7 @@
 				class="menu"
 			>
 				<ProjectsNavigation
-					:model-value="favoriteProjects" 
+					:model-value="favoriteProjects"
 					:can-edit-order="false"
 					:can-collapse="false"
 				/>
diff --git a/frontend/src/components/home/ProjectsNavigationItem.vue b/frontend/src/components/home/ProjectsNavigationItem.vue
index 532425688..3e9b9688f 100644
--- a/frontend/src/components/home/ProjectsNavigationItem.vue
+++ b/frontend/src/components/home/ProjectsNavigationItem.vue
@@ -52,7 +52,7 @@
 				<span class="project-menu-title">{{ getProjectTitle(project) }}</span>
 			</BaseButton>
 			<BaseButton
-				v-if="project.id > 0 && project.maxPermission !== null && project.maxPermission > PERMISSIONS.READ"
+				v-if="canToggleFavorite"
 				class="favorite"
 				:class="{'is-favorite': project.isFavorite}"
 				@click="projectStore.toggleProjectFavorite(project)"
@@ -104,6 +104,7 @@ import {getProjectTitle} from '@/helpers/getProjectTitle'
 import ColorBubble from '@/components/misc/ColorBubble.vue'
 import ProjectsNavigation from '@/components/home/ProjectsNavigation.vue'
 import {PERMISSIONS} from '@/constants/permissions'
+import {isSavedFilter} from '@/services/savedFilter'
 
 const props = defineProps<{
 	project: IProject,
@@ -183,6 +184,18 @@ const childProjects = computed(() => {
 		.filter(p => !p.isArchived)
 		.sort((a, b) => a.position - b.position)
 })
+
+const canToggleFavorite = computed(() => {
+	// Allow favorite toggle for:
+	// 1. Regular projects (id > 0) with write permission
+	// 2. Saved filters (id < -1) - user owns their own filters
+	if (props.project.id === -1) return false  // Favorites pseudo-project
+	if (props.project.id > 0) {
+		return props.project.maxPermission !== null && props.project.maxPermission > PERMISSIONS.READ
+	}
+	// Saved filters (negative IDs except -1)
+	return isSavedFilter(props.project)
+})
 </script>
 
 <style lang="scss" scoped>
@@ -190,11 +203,6 @@ const childProjects = computed(() => {
 	transition: background-color $transition;
 }
 
-.list-setting-spacer {
-	inline-size: 5rem;
-	flex-shrink: 0;
-}
-
 .project-is-collapsed {
 	transform: rotate(-90deg);
 }
diff --git a/frontend/src/modelTypes/ISavedFilter.ts b/frontend/src/modelTypes/ISavedFilter.ts
index 8c50d64b9..ced2ef814 100644
--- a/frontend/src/modelTypes/ISavedFilter.ts
+++ b/frontend/src/modelTypes/ISavedFilter.ts
@@ -15,6 +15,7 @@ export interface ISavedFilter extends IAbstract {
 	title: string
 	description: string
 	filters: IFilters
+	isFavorite: boolean
 
 	owner: IUser
 	created: Date
diff --git a/frontend/src/models/savedFilter.ts b/frontend/src/models/savedFilter.ts
index aec11ec33..5f2b73949 100644
--- a/frontend/src/models/savedFilter.ts
+++ b/frontend/src/models/savedFilter.ts
@@ -16,6 +16,7 @@ export default class SavedFilterModel extends AbstractModel<ISavedFilter> implem
 		filter_include_nulls: true,
 		s: '',
 	}
+	isFavorite = false
 
 	owner: IUser = {}
 	created: Date = null
diff --git a/frontend/src/stores/projects.ts b/frontend/src/stores/projects.ts
index 00f82f01a..3406fb9d8 100644
--- a/frontend/src/stores/projects.ts
+++ b/frontend/src/stores/projects.ts
@@ -15,7 +15,9 @@ import type {IProject} from '@/modelTypes/IProject'
 import ProjectModel from '@/models/project'
 import {success} from '@/message'
 import {useBaseStore} from '@/stores/base'
-import {getSavedFilterIdFromProjectId} from '@/services/savedFilter'
+import SavedFilterService from '@/services/savedFilter'
+import {getSavedFilterIdFromProjectId, isSavedFilter} from '@/services/savedFilter'
+import SavedFilterModel from '@/models/savedFilter'
 import type {IProjectView} from '@/modelTypes/IProjectView'
 import {PERMISSIONS} from '@/constants/permissions.ts'
 
@@ -145,12 +147,45 @@ export const useProjectStore = defineStore('project', () => {
 		if (project.id === -1 || project.isArchived) {
 			return
 		}
+
+		if (isSavedFilter(project)) {
+			return toggleSavedFilterFavorite(project)
+		}
+		
 		return updateProject({
 			...project,
 			isFavorite: !project.isFavorite,
 		})
 	}
 
+	async function toggleSavedFilterFavorite(project: IProject) {
+		if (!isSavedFilter(project)) {
+			return
+		}
+
+		const wasFavorite = project.isFavorite
+		const filterId = getSavedFilterIdFromProjectId(project.id)
+		const savedFilterService = new SavedFilterService()
+
+		// Optimistically update the UI
+		setProject({
+			...project,
+			isFavorite: !wasFavorite,
+		})
+
+		try {
+			const savedFilter = await savedFilterService.get(new SavedFilterModel({id: filterId}))
+			savedFilter.isFavorite = !wasFavorite
+			await savedFilterService.update(savedFilter)
+		} catch (e) {
+			setProject({
+				...project,
+				isFavorite: wasFavorite,
+			})
+			throw e
+		}
+	}
+
 	async function createProject(project: IProject) {
 		const cancel = setModuleLoading(setIsLoading)
 		const projectService = new ProjectService()
diff --git a/frontend/tests/e2e/project/saved-filter-favorite.spec.ts b/frontend/tests/e2e/project/saved-filter-favorite.spec.ts
new file mode 100644
index 000000000..5bd9038a2
--- /dev/null
+++ b/frontend/tests/e2e/project/saved-filter-favorite.spec.ts
@@ -0,0 +1,112 @@
+import {test, expect} from '../../support/fixtures'
+import {SavedFilterFactory} from '../../factories/saved_filter'
+import {ProjectFactory} from '../../factories/project'
+
+test.describe('Saved Filter Favorites', () => {
+	test('Can mark a saved filter as favorite', async ({authenticatedPage: page}) => {
+		// Create a project (required for saved filters to work)
+		await ProjectFactory.create(1)
+
+		// Create a saved filter (not favorite initially)
+		await SavedFilterFactory.create(1, {
+			title: 'My Test Filter',
+			is_favorite: false,
+			filters: '{"filter":"done = false","filter_include_nulls":false,"s":""}',
+		})
+
+		await page.goto('/')
+		await page.waitForLoadState('networkidle')
+
+		// The saved filter should appear in the sidebar (as a pseudo-project with negative ID)
+		// Saved filters section shows filters that aren't favorites
+		const filterItem = page.locator('.list-menu .navigation-item').filter({hasText: 'My Test Filter'})
+		await expect(filterItem).toBeVisible({timeout: 10000})
+
+		// Hover to reveal the favorite button
+		await filterItem.hover()
+		const favoriteButton = filterItem.locator('.favorite')
+		await expect(favoriteButton).toBeVisible()
+
+		// Click to mark as favorite
+		const favoritePromise = page.waitForResponse(response =>
+			response.url().includes('/filters/') && response.request().method() === 'POST',
+		)
+		await favoriteButton.click()
+		await favoritePromise
+
+		await expect(filterItem.locator('.favorite.is-favorite').nth(0)).toBeVisible()
+		await expect(filterItem.locator('.favorite.is-favorite').nth(1)).toBeVisible()
+	})
+
+	test('Can remove a saved filter from favorites', async ({authenticatedPage: page}) => {
+		// Create a project (required for saved filters to work)
+		await ProjectFactory.create(1)
+
+		// Create a saved filter that is already a favorite
+		await SavedFilterFactory.create(1, {
+			title: 'Favorited Filter',
+			is_favorite: true,
+			filters: '{"filter":"done = false","filter_include_nulls":false,"s":""}',
+		})
+
+		await page.goto('/')
+		await page.waitForLoadState('networkidle')
+
+		// The saved filter appears twice (favorites section + saved filters section)
+		// Get the first instance (in favorites section) which should have a filled star
+		const filterItem = page.locator('.menu-container').getByRole('listitem').filter({hasText: 'Favorited Filter'}).first()
+		await expect(filterItem).toBeVisible()
+
+		// Hover to reveal the favorite button (should be filled star)
+		await filterItem.hover()
+		const favoriteButton = filterItem.locator('.favorite.is-favorite')
+		await expect(favoriteButton).toBeVisible()
+
+		// Click to remove from favorites
+		const unfavoritePromise = page.waitForResponse(response =>
+			response.url().includes('/filters/') && response.request().method() === 'POST',
+		)
+		await favoriteButton.click()
+		await unfavoritePromise
+
+		// After unfavoriting, the star should be outline (not filled)
+		// Wait for UI to update with longer timeout
+		await expect(filterItem.locator('.favorite:not(.is-favorite)')).toBeVisible({timeout: 10000})
+	})
+
+	test('Saved filter favorite status persists after page reload', async ({authenticatedPage: page}) => {
+		// Create a project
+		await ProjectFactory.create(1)
+
+		// Create a non-favorite saved filter
+		await SavedFilterFactory.create(1, {
+			title: 'Persistent Filter',
+			is_favorite: false,
+			filters: '{"filter":"done = false","filter_include_nulls":false,"s":""}',
+		})
+
+		await page.goto('/')
+		await page.waitForLoadState('networkidle')
+
+		// Find and favorite the filter
+		const filterItem = page.locator('.menu-container').getByRole('listitem').filter({hasText: 'Persistent Filter'})
+		await filterItem.hover()
+
+		const favoritePromise = page.waitForResponse(response =>
+			response.url().includes('/filters/') && response.request().method() === 'POST',
+		)
+		await filterItem.locator('.favorite').click()
+		await favoritePromise
+
+		// Wait for UI to update before reloading
+		await page.waitForTimeout(500)
+
+		// Reload the page
+		await page.reload()
+		await page.waitForLoadState('networkidle')
+
+		// The filter should still be favorited after reload (filled star)
+		await expect(filterItem.locator('.favorite.is-favorite').nth(0)).toBeVisible()
+		await expect(filterItem.locator('.favorite.is-favorite').nth(1)).toBeVisible()
+	})
+})
diff --git a/pkg/models/saved_filters.go b/pkg/models/saved_filters.go
index ef38068be..7f886f723 100644
--- a/pkg/models/saved_filters.go
+++ b/pkg/models/saved_filters.go
@@ -195,6 +195,8 @@ func (sf *SavedFilter) Update(s *xorm.Session, _ web.Auth) error {
 		return err
 	}
 
+	sf.OwnerID = origFilter.OwnerID
+
 	if sf.Filters == nil {
 		sf.Filters = origFilter.Filters
 	}