diff --git a/client/src/components/cards/Card/TaskList/TaskList.jsx b/client/src/components/cards/Card/TaskList/TaskList.jsx
index e9497848..49a6c1e9 100644
--- a/client/src/components/cards/Card/TaskList/TaskList.jsx
+++ b/client/src/components/cards/Card/TaskList/TaskList.jsx
@@ -9,6 +9,7 @@ import classNames from 'classnames';
 import { useSelector } from 'react-redux';
 import { Progress } from 'semantic-ui-react';
 import { useToggle } from '../../../../lib/hooks';
+import { ListTypes } from '../../../../constants/Enums';
 
 import selectors from '../../../../selectors';
 import Task from './Task';
@@ -23,9 +24,33 @@ const TaskList = React.memo(({ id }) => {
   const [isOpened, toggleOpened] = useToggle();
 
   // TODO: move to selector?
-  const completedTasksTotal = useMemo(
-    () => tasks.reduce((result, task) => (task.isCompleted ? result + 1 : result), 0),
-    [tasks],
+  const selectCardById = useMemo(() => selectors.makeSelectCardById(), []);
+  const selectListById = useMemo(() => selectors.makeSelectListById(), []);
+
+  const completedTasksTotal = useSelector((state) =>
+    tasks.reduce((result, task) => {
+      if (task.isCompleted) {
+        return result + 1;
+      }
+
+      const regex = /\/cards\/([^/]+)/g;
+      const matches = task.name.matchAll(regex);
+
+      // eslint-disable-next-line no-restricted-syntax
+      for (const [, cardId] of matches) {
+        const card = selectCardById(state, cardId);
+
+        if (card) {
+          const list = selectListById(state, card.listId);
+
+          if (list && list.type === ListTypes.CLOSED) {
+            return result + 1;
+          }
+        }
+      }
+
+      return result;
+    }, 0),
   );
 
   const handleToggleClick = useCallback(
diff --git a/client/src/components/common/Linkify.jsx b/client/src/components/common/Linkify.jsx
index 86df52ec..f1d4f5cb 100644
--- a/client/src/components/common/Linkify.jsx
+++ b/client/src/components/common/Linkify.jsx
@@ -5,11 +5,15 @@
 
 import React, { useCallback } from 'react';
 import PropTypes from 'prop-types';
+import { useSelector } from 'react-redux';
 import LinkifyReact from 'linkify-react';
 
 import history from '../../history';
+import selectors from '../../selectors';
 
 const Linkify = React.memo(({ children, linkStopPropagation, ...props }) => {
+  const cardNamesById = useSelector(selectors.selectCardNamesById);
+
   const handleLinkClick = useCallback(
     (event) => {
       if (linkStopPropagation) {
@@ -34,6 +38,12 @@ const Linkify = React.memo(({ children, linkStopPropagation, ...props }) => {
       }
 
       const isSameSite = !!url && url.origin === window.location.origin;
+      let linkContent = content;
+      if (isSameSite) {
+        const { pathname } = url;
+        const match = pathname.match(/^\/cards\/([^/]+)$/);
+        linkContent = cardNamesById[match?.[1]] || pathname;
+      }
 
       return (
         <a
@@ -43,11 +53,11 @@ const Linkify = React.memo(({ children, linkStopPropagation, ...props }) => {
           rel={isSameSite ? undefined : 'noreferrer'}
           onClick={handleLinkClick}
         >
-          {isSameSite ? url.pathname : content}
+          {isSameSite ? linkContent : content}
         </a>
       );
     },
-    [handleLinkClick],
+    [handleLinkClick, cardNamesById],
   );
 
   return (
diff --git a/client/src/components/task-lists/TaskList/Task/Task.jsx b/client/src/components/task-lists/TaskList/Task/Task.jsx
index b1671f79..be5b88b4 100755
--- a/client/src/components/task-lists/TaskList/Task/Task.jsx
+++ b/client/src/components/task-lists/TaskList/Task/Task.jsx
@@ -16,7 +16,7 @@ import selectors from '../../../../selectors';
 import entryActions from '../../../../entry-actions';
 import { usePopupInClosableContext } from '../../../../hooks';
 import { isListArchiveOrTrash } from '../../../../utils/record-helpers';
-import { BoardMembershipRoles } from '../../../../constants/Enums';
+import { BoardMembershipRoles, ListTypes } from '../../../../constants/Enums';
 import { ClosableContext } from '../../../../contexts';
 import EditName from './EditName';
 import SelectAssigneeStep from './SelectAssigneeStep';
@@ -29,9 +29,26 @@ import styles from './Task.module.scss';
 const Task = React.memo(({ id, index }) => {
   const selectTaskById = useMemo(() => selectors.makeSelectTaskById(), []);
   const selectListById = useMemo(() => selectors.makeSelectListById(), []);
+  const selectCardById = useMemo(() => selectors.makeSelectCardById(), []);
 
   const task = useSelector((state) => selectTaskById(state, id));
 
+  const isLinkedCardCompleted = useSelector((state) => {
+    const regex = /\/cards\/([^/]+)/g;
+    const matches = task.name.matchAll(regex);
+    // eslint-disable-next-line no-restricted-syntax
+    for (const [, cardId] of matches) {
+      const card = selectCardById(state, cardId);
+      if (card) {
+        const list = selectListById(state, card.listId);
+        if (list && list.type === ListTypes.CLOSED) {
+          return true;
+        }
+      }
+    }
+    return false;
+  });
+
   const { canEdit, canToggle } = useSelector((state) => {
     const { listId } = selectors.selectCurrentCard(state);
     const list = selectListById(state, listId);
@@ -56,13 +73,21 @@ const Task = React.memo(({ id, index }) => {
   const [isEditNameOpened, setIsEditNameOpened] = useState(false);
   const [, , setIsClosableActive] = useContext(ClosableContext);
 
+  const isEditable = task.isPersisted && canEdit;
+  const isCompleted = task.isCompleted || isLinkedCardCompleted;
+  const isToggleDisabled = !task.isPersisted || !canToggle || isLinkedCardCompleted;
+
   const handleToggleChange = useCallback(() => {
+    if (isToggleDisabled) {
+      return;
+    }
+
     dispatch(
       entryActions.updateTask(id, {
         isCompleted: !task.isCompleted,
       }),
     );
-  }, [id, task.isCompleted, dispatch]);
+  }, [id, task.isCompleted, dispatch, isToggleDisabled]);
 
   const handleUserSelect = useCallback(
     (userId) => {
@@ -83,8 +108,6 @@ const Task = React.memo(({ id, index }) => {
     );
   }, [id, dispatch]);
 
-  const isEditable = task.isPersisted && canEdit;
-
   const handleClick = useCallback(() => {
     if (isEditable) {
       setIsEditNameOpened(true);
@@ -122,8 +145,8 @@ const Task = React.memo(({ id, index }) => {
           >
             <span className={styles.checkboxWrapper}>
               <Checkbox
-                checked={task.isCompleted}
-                disabled={!task.isPersisted || !canToggle}
+                checked={isCompleted}
+                disabled={isToggleDisabled}
                 className={styles.checkbox}
                 onChange={handleToggleChange}
               />
@@ -138,9 +161,7 @@ const Task = React.memo(({ id, index }) => {
                   className={classNames(styles.text, canEdit && styles.textEditable)}
                   onClick={handleClick}
                 >
-                  <span
-                    className={classNames(styles.task, task.isCompleted && styles.taskCompleted)}
-                  >
+                  <span className={classNames(styles.task, isCompleted && styles.taskCompleted)}>
                     <Linkify linkStopPropagation>{task.name}</Linkify>
                   </span>
                 </span>
diff --git a/client/src/components/task-lists/TaskList/TaskList.jsx b/client/src/components/task-lists/TaskList/TaskList.jsx
index 25e7be7d..08081c8a 100755
--- a/client/src/components/task-lists/TaskList/TaskList.jsx
+++ b/client/src/components/task-lists/TaskList/TaskList.jsx
@@ -14,7 +14,7 @@ import { useDidUpdate } from '../../../lib/hooks';
 import selectors from '../../../selectors';
 import { isListArchiveOrTrash } from '../../../utils/record-helpers';
 import DroppableTypes from '../../../constants/DroppableTypes';
-import { BoardMembershipRoles } from '../../../constants/Enums';
+import { BoardMembershipRoles, ListTypes } from '../../../constants/Enums';
 import { ClosableContext } from '../../../contexts';
 import Task from './Task';
 import AddTask from './AddTask';
@@ -46,9 +46,32 @@ const TaskList = React.memo(({ id }) => {
   const [, , setIsClosableActive] = useContext(ClosableContext);
 
   // TODO: move to selector?
-  const completedTasksTotal = useMemo(
-    () => tasks.reduce((result, task) => (task.isCompleted ? result + 1 : result), 0),
-    [tasks],
+  const selectCardById = useMemo(() => selectors.makeSelectCardById(), []);
+
+  const completedTasksTotal = useSelector((state) =>
+    tasks.reduce((result, task) => {
+      if (task.isCompleted) {
+        return result + 1;
+      }
+
+      const regex = /\/cards\/([^/]+)/g;
+      const matches = task.name.matchAll(regex);
+
+      // eslint-disable-next-line no-restricted-syntax
+      for (const [, cardId] of matches) {
+        const card = selectCardById(state, cardId);
+
+        if (card) {
+          const list = selectListById(state, card.listId);
+
+          if (list && list.type === ListTypes.CLOSED) {
+            return result + 1;
+          }
+        }
+      }
+
+      return result;
+    }, 0),
   );
 
   const handleAddClick = useCallback(() => {
diff --git a/client/src/selectors/cards.js b/client/src/selectors/cards.js
index eb203b1a..b9d2875b 100644
--- a/client/src/selectors/cards.js
+++ b/client/src/selectors/cards.js
@@ -32,6 +32,18 @@ export const makeSelectCardById = () =>
 
 export const selectCardById = makeSelectCardById();
 
+export const selectCardNamesById = createSelector(orm, ({ Card }) =>
+  Card.all()
+    .toModelArray()
+    .reduce(
+      (result, cardModel) => ({
+        ...result,
+        [cardModel.id]: cardModel.name,
+      }),
+      {},
+    ),
+);
+
 export const makeSelectCardIndexById = () =>
   createSelector(
     orm,
@@ -467,6 +479,7 @@ export default {
   selectCardById,
   makeSelectCardIndexById,
   selectCardIndexById,
+  selectCardNamesById,
   makeSelectUserIdsByCardId,
   selectUserIdsByCardId,
   makeSelectLabelIdsByCardId,