diff --git a/src/components/SubTask/SubTaskComp.vue b/src/components/SubTask/SubTaskComp.vue
new file mode 100644
index 0000000..0d25653
--- /dev/null
+++ b/src/components/SubTask/SubTaskComp.vue
@@ -0,0 +1,141 @@
+<template>
+	<li :id="`subTask${id}`" class="subTask">
+		<div class="subTaskInfo">
+			<input
+				:id="`subTaskCheckboxInput${id}`"
+				type="checkbox"
+				name=""
+				class="checkbox"
+				:checked="checked"
+				@click="changeState(parent)"
+			/>
+			<p class="description">{{ description }}</p>
+		</div>
+		<nav class="subTaskControls">
+			<button class="deleteSubtaskButton" @click="deleteSubTask(parent)">
+				<IconTrash class="trashIcon" />
+			</button>
+		</nav>
+	</li>
+</template>
+
+<script lang="js">
+import Vue from 'vue';
+import sm from '~/libs/storageManagement';
+
+export default Vue.extend({
+	name: 'SubTaskComp',
+	props: {
+		id: {
+			type: Number,
+			required: true,
+		},
+		parent: {
+			type: Number,
+			required: true,
+		},
+		description: {
+			type: String,
+			default: 'Task short description',
+		},
+		checked: {
+			type: Boolean,
+			default: false,
+		},
+	},
+	methods: {
+		changeState(parentId) {
+			const state = document.querySelector(`input#subTaskCheckboxInput${this.id}`)?.checked;
+
+			const localTasks = sm.get('tasks');
+
+			localTasks[parentId].subTasks[this.id].checked = state;
+
+			sm.set('tasks', localTasks);
+		},
+		deleteSubTask(parentId) {
+			const localTasks = sm.get('tasks');
+
+			localTasks[parentId].subTasks.splice(this.id, 1);
+
+			sm.set('tasks', localTasks);
+		}
+	}
+});
+</script>
+
+<style lang="scss">
+@import '~assets/styles/_variables.scss';
+@import '~assets/styles/_mixins.scss';
+
+.subTask {
+	display: flex;
+	align-items: center;
+	justify-content: space-between;
+
+	.subTaskInfo {
+		display: flex;
+		align-items: center;
+
+		.checkbox {
+			appearance: none;
+			background-color: transparent;
+			margin: 0;
+
+			margin-right: 10px;
+
+			.light-mode & {
+				color: $blue3;
+				background-color: transparent;
+			}
+			.dark-mode & {
+				color: $dark-background;
+				background-color: transparent;
+			}
+
+			font: inherit;
+			width: 20px;
+			height: 20px;
+			border: 5px solid currentColor;
+			border-radius: 50%;
+
+			&:checked {
+				background-color: $checked-color;
+			}
+		}
+
+		.description {
+			margin: 1px 0;
+		}
+	}
+
+	.subTaskControls {
+		opacity: 0;
+		@media (pointer: none), (pointer: coarse) {
+			opacity: 0.5;
+		}
+		transition: opacity 0.2s;
+
+		button {
+			background-color: transparent;
+			padding: 1px;
+			border: 0;
+			cursor: pointer;
+		}
+
+		.deleteSubtaskButton {
+			.trashIcon * {
+				transition: stroke 0.2s;
+			}
+			&:hover .trashIcon * {
+				stroke: $begonia-red0;
+			}
+		}
+	}
+	&:hover .subTaskControls {
+		transition: 1s 0.2s;
+		opacity: 1;
+		right: -7%;
+	}
+}
+</style>
diff --git a/src/components/SubTask/SubTaskList.vue b/src/components/SubTask/SubTaskList.vue
new file mode 100644
index 0000000..a4911b3
--- /dev/null
+++ b/src/components/SubTask/SubTaskList.vue
@@ -0,0 +1,143 @@
+<template>
+	<span :class="`${preventAnim ? 'preventAnimLoad ' : ''}`">
+		<div :class="`${opened ? 'opened' : 'closed'} subTasks preventAnim`">
+			<ul :id="`subTaskList${parent}`" class="list">
+				<SubTaskComp
+					v-for="subTask in subTaskList"
+					:id="subTaskList.indexOf(subTask)"
+					:key="`subtask-comp-${subTaskList.indexOf(subTask)}`"
+					:parent="parent"
+					:description="subTask.description"
+					:checked="subTask.checked"
+				/>
+			</ul>
+			<button @click="addSubTask(parent)">Add subtask</button>
+		</div>
+	</span>
+</template>
+
+<script lang="ts">
+import Vue from 'vue';
+import sm from '~/libs/storageManagement';
+
+const subTaskItem = {
+	description: 'Task',
+	checked: false,
+};
+
+export default Vue.extend({
+	name: 'SubTasks',
+	props: {
+		parent: {
+			type: Number,
+			required: true,
+		},
+		opened: {
+			type: Boolean,
+			default: false,
+		},
+	},
+	data() {
+		return {
+			subTaskList: sm.get('tasks')[this.parent].subTasks
+				? sm.get('tasks')[this.parent].subTasks
+				: [],
+			preventAnim: true,
+		};
+	},
+	mounted() {
+		window.addEventListener('localStorage-changed', () => {
+			this.subTaskList = sm.get('tasks')[this.parent].subTasks
+				? sm.get('tasks')[this.parent].subTasks
+				: [];
+		});
+		setTimeout(() => {
+			this.preventAnim = false;
+		}, 1000);
+	},
+	methods: {
+		addSubTask: (parentId: number) => {
+			if (sm.get('tasks') === undefined) sm.add('tasks', []);
+
+			const localTasks: any[] = sm.get('tasks');
+			const parentTask = localTasks[parentId];
+
+			if (!parentTask.subTasks) parentTask.subTasks = [];
+
+			subTaskItem.description = `Description sub task ${parentTask.subTasks.length}`;
+
+			parentTask.subTasks.push(subTaskItem);
+			localTasks[parentId] = parentTask;
+
+			sm.set('tasks', localTasks);
+		},
+	},
+});
+</script>
+
+<style lang="scss">
+@import '~assets/styles/_variables.scss';
+@import '~assets/styles/_mixins.scss';
+
+.opened {
+	transform: translateY(-80px) scaleY(0.1);
+	animation: open 0.5s forwards;
+	@keyframes open {
+		from {
+			transform: translateY(-80px) scaleY(0.1);
+			opacity: 0;
+			position: absolute;
+		}
+		to {
+			transform: translateY(-20px) scaleY(1);
+			opacity: 1;
+			position: relative;
+		}
+	}
+}
+
+.closed {
+	transform: translateY(-20px) scaleY(1);
+	animation: close 0.5s forwards;
+	@keyframes close {
+		from {
+			transform: translateY(-20px) scaleY(1);
+			opacity: 1;
+			position: relative;
+		}
+		to {
+			transform: translateY(-80px) scaleY(0.1);
+			display: none;
+			opacity: 0;
+			position: absolute;
+		}
+	}
+}
+
+.subTasks {
+	.light-mode & {
+		background-color: $blue2;
+		color: $independence-gray0;
+	}
+	.dark-mode & {
+		background-color: $eerie-black2;
+		color: $dark-primary;
+	}
+
+	font-family: $secondary-font;
+
+	width: 90%;
+	z-index: 2;
+
+	padding: 20px 5% 10px 5%;
+
+	border-radius: 0 0 20px 20px;
+
+	text-align: left;
+
+	.list {
+		padding: 1% 0;
+		list-style: none;
+	}
+}
+</style>
diff --git a/src/components/Task/TaskComp.vue b/src/components/Task/TaskComp.vue
index fd7c6ae..84db6b1 100644
--- a/src/components/Task/TaskComp.vue
+++ b/src/components/Task/TaskComp.vue
@@ -28,6 +28,14 @@
 						<p>{{ description }}</p>
 					</div>
 				</div>
+				<button
+					:class="`${
+						openSubTasks ? 'openedSubtasksButton' : 'closedSubtasksButton'
+					} subtasksButton`"
+					@click="openSubTasks = !openSubTasks"
+				>
+					<IconDropdown class="dropdownIcon" />
+				</button>
 			</div>
 			<nav class="controls">
 				<button class="deleteButton" @click="deleteTask()">
@@ -35,6 +43,7 @@
 				</button>
 			</nav>
 		</div>
+		<SubTaskList :parent="id" :opened="openSubTasks" />
 	</li>
 </template>
 
@@ -340,6 +349,49 @@ export default Vue.extend({
 				}
 			}
 
+			.subtasksButton {
+				display: flex;
+				align-items: center;
+
+				opacity: 0;
+				@media (pointer: none), (pointer: coarse) {
+					opacity: 0.5;
+				}
+				transition: opacity 0.2s;
+
+				background-color: transparent;
+				padding: 1px;
+				border: 0;
+				cursor: pointer;
+
+				.dropdownIcon {
+					* {
+						transition: stroke 0.2s;
+					}
+					&:hover * {
+						.light-mode & {
+							stroke: $independence-gray0;
+						}
+						.dark-mode & {
+							stroke: $dark-primary;
+						}
+					}
+				}
+
+				&.openedSubtasksButton {
+					.dropdownIcon {
+						transform: rotate(180deg);
+					}
+				}
+				&.closedSubtasksButton {
+					.dropdownIcon {
+						transform: rotate(0deg);
+					}
+				}
+			}
+			&:hover .subtasksButton {
+				opacity: 1;
+			}
 		}
 	}
 }
diff --git a/src/components/icon/Dropdown.vue b/src/components/icon/Dropdown.vue
new file mode 100644
index 0000000..e66d2b6
--- /dev/null
+++ b/src/components/icon/Dropdown.vue
@@ -0,0 +1,30 @@
+<template>
+	<svg
+		width="24"
+		height="24"
+		stroke-width="1.5"
+		viewBox="0 0 24 24"
+		fill="none"
+		xmlns="http://www.w3.org/2000/svg"
+	>
+		<path
+			d="M6 5H18C20.2091 5 22 6.79086 22 9V15C22 17.2091 20.2091 19 18 19H6C3.79086 19 2 17.2091 2 15V9C2 6.79086 3.79086 5 6 5Z"
+			stroke="currentColor"
+			stroke-linecap="round"
+			stroke-linejoin="round"
+		/>
+		<path
+			d="M14.5 10.75L12 13.25L9.5 10.75"
+			stroke="currentColor"
+			stroke-linecap="round"
+			stroke-linejoin="round"
+		/>
+	</svg>
+</template>
+
+<script lang="ts">
+import Vue from 'vue';
+export default Vue.extend({
+	name: 'IconDropdown',
+});
+</script>
diff --git a/src/static/icons/source_icons_down-round-arrow.svg b/src/static/icons/source_icons_down-round-arrow.svg
new file mode 100644
index 0000000..4a67454
--- /dev/null
+++ b/src/static/icons/source_icons_down-round-arrow.svg
@@ -0,0 +1,4 @@
+<svg width="24" height="24" stroke-width="1.5" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M6 5H18C20.2091 5 22 6.79086 22 9V15C22 17.2091 20.2091 19 18 19H6C3.79086 19 2 17.2091 2 15V9C2 6.79086 3.79086 5 6 5Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M14.5 10.75L12 13.25L9.5 10.75" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>