diff --git a/webapp/store/posts.js b/webapp/store/posts.js
index 5d9891eff..e8602bb13 100644
--- a/webapp/store/posts.js
+++ b/webapp/store/posts.js
@@ -30,6 +30,19 @@ export const mutations = {
       }
     }
   },
+  TOGGLE_FILTER_BY_MY_GROUPS(state) {
+    const filter = clone(state.filter)
+    const status = get(filter, 'postsInMyGroups')
+    if (status) {
+      delete filter.postsInMyGroups
+      state.filter = filter
+    } else {
+      state.filter = {
+        ...filter,
+        postsInMyGroups: true,
+      }
+    }
+  },
   RESET_CATEGORIES(state) {
     const filter = clone(state.filter)
     delete filter.categories_some
@@ -84,6 +97,9 @@ export const getters = {
   filteredByUsersFollowed(state) {
     return !!get(state.filter, 'author.followedBy_some.id')
   },
+  filteredByPostsInMyGroups(state) {
+    return !!get(state.filter, 'postsInMyGroups')
+  },
   filteredByEmotions(state) {
     return get(state.filter, 'emotions_some.emotion_in') || []
   },
diff --git a/webapp/store/posts.spec.js b/webapp/store/posts.spec.js
index ed728bdd8..665b147ae 100644
--- a/webapp/store/posts.spec.js
+++ b/webapp/store/posts.spec.js
@@ -56,6 +56,18 @@ describe('getters', () => {
     })
   })
 
+  describe('filteredByPostsInMyGroups', () => {
+    it('returns true if filter is set', () => {
+      state = { filter: { postsInMyGroups: true } }
+      expect(getters.filteredByPostsInMyGroups(state)).toBe(true)
+    })
+
+    it('returns false if filter is not set', () => {
+      state = { filter: { categories_some: { id_in: [23] } } }
+      expect(getters.filteredByUsersFollowed(state)).toBe(false)
+    })
+  })
+
   describe('filteredByEmotions', () => {
     it('returns an emotions array if filter is set', () => {
       state = { filter: { emotions_some: { emotion_in: ['sad'] } } }
@@ -230,6 +242,35 @@ describe('mutations', () => {
     })
   })
 
+  describe('TOGGLE_FILTER_BY_MY_GROUPS', () => {
+    beforeEach(() => {
+      testMutation = () => {
+        mutations.TOGGLE_FILTER_BY_MY_GROUPS(state)
+        return getters.filter(state)
+      }
+    })
+
+    describe('given empty filter', () => {
+      beforeEach(() => {
+        state = { filter: {} }
+      })
+
+      it('sets postsInMyGroups filter to true', () => {
+        expect(testMutation()).toEqual({ postsInMyGroups: true })
+      })
+    })
+
+    describe('already filtered', () => {
+      beforeEach(() => {
+        state = { filter: { postsInMyGroups: true } }
+      })
+
+      it('removes postsInMyGroups filter', () => {
+        expect(testMutation()).toEqual({})
+      })
+    })
+  })
+
   describe('TOGGLE_ORDER', () => {
     beforeEach(() => {
       testMutation = (key) => {