diff --git a/graphql/documents/data/tag.graphql b/graphql/documents/data/tag.graphql
index 336d3a9c8..ac773cf16 100644
--- a/graphql/documents/data/tag.graphql
+++ b/graphql/documents/data/tag.graphql
@@ -1,6 +1,7 @@
 fragment TagData on Tag {
   id
   name
+  description
   aliases
   ignore_auto_tag
   image_path
diff --git a/graphql/schema/types/tag.graphql b/graphql/schema/types/tag.graphql
index 537fab8b9..c6554e3b4 100644
--- a/graphql/schema/types/tag.graphql
+++ b/graphql/schema/types/tag.graphql
@@ -1,6 +1,7 @@
 type Tag {
   id: ID!
   name: String!
+  description: String
   aliases: [String!]!
   ignore_auto_tag: Boolean!
   created_at: Time!
@@ -19,6 +20,7 @@ type Tag {
 
 input TagCreateInput {
   name: String!
+  description: String
   aliases: [String!]
   ignore_auto_tag: Boolean
 
@@ -32,6 +34,7 @@ input TagCreateInput {
 input TagUpdateInput {
   id: ID!
   name: String
+  description: String
   aliases: [String!]
   ignore_auto_tag: Boolean
 
diff --git a/internal/api/resolver_model_tag.go b/internal/api/resolver_model_tag.go
index 3592dd959..db6236a0b 100644
--- a/internal/api/resolver_model_tag.go
+++ b/internal/api/resolver_model_tag.go
@@ -10,6 +10,13 @@ import (
 	"github.com/stashapp/stash/pkg/models"
 )
 
+func (r *tagResolver) Description(ctx context.Context, obj *models.Tag) (*string, error) {
+	if obj.Description.Valid {
+		return &obj.Description.String, nil
+	}
+	return nil, nil
+}
+
 func (r *tagResolver) Parents(ctx context.Context, obj *models.Tag) (ret []*models.Tag, err error) {
 	if err := r.withTxn(ctx, func(ctx context.Context) error {
 		ret, err = r.repository.Tag.FindByChildTagID(ctx, obj.ID)
diff --git a/internal/api/resolver_mutation_tag.go b/internal/api/resolver_mutation_tag.go
index f5befeba7..47986c56e 100644
--- a/internal/api/resolver_mutation_tag.go
+++ b/internal/api/resolver_mutation_tag.go
@@ -2,6 +2,7 @@ package api
 
 import (
 	"context"
+	"database/sql"
 	"fmt"
 	"strconv"
 	"time"
@@ -34,6 +35,10 @@ func (r *mutationResolver) TagCreate(ctx context.Context, input TagCreateInput)
 		UpdatedAt: models.SQLiteTimestamp{Timestamp: currentTime},
 	}
 
+	if input.Description != nil {
+		newTag.Description = sql.NullString{String: *input.Description, Valid: true}
+	}
+
 	if input.IgnoreAutoTag != nil {
 		newTag.IgnoreAutoTag = *input.IgnoreAutoTag
 	}
@@ -195,6 +200,8 @@ func (r *mutationResolver) TagUpdate(ctx context.Context, input TagUpdateInput)
 			updatedTag.Name = input.Name
 		}
 
+		updatedTag.Description = translator.nullString(input.Description, "description")
+
 		t, err = qb.Update(ctx, updatedTag)
 		if err != nil {
 			return err
diff --git a/pkg/models/jsonschema/tag.go b/pkg/models/jsonschema/tag.go
index 5f7e0bfa7..48555098b 100644
--- a/pkg/models/jsonschema/tag.go
+++ b/pkg/models/jsonschema/tag.go
@@ -11,6 +11,7 @@ import (
 
 type Tag struct {
 	Name          string        `json:"name,omitempty"`
+	Description   string        `json:"description,omitempty"`
 	Aliases       []string      `json:"aliases,omitempty"`
 	Image         string        `json:"image,omitempty"`
 	Parents       []string      `json:"parents,omitempty"`
diff --git a/pkg/models/model_tag.go b/pkg/models/model_tag.go
index b7ec20c3f..043f84bd6 100644
--- a/pkg/models/model_tag.go
+++ b/pkg/models/model_tag.go
@@ -1,10 +1,14 @@
 package models
 
-import "time"
+import (
+	"database/sql"
+	"time"
+)
 
 type Tag struct {
 	ID            int             `db:"id" json:"id"`
 	Name          string          `db:"name" json:"name"` // TODO make schema not null
+	Description   sql.NullString  `db:"description" json:"description"`
 	IgnoreAutoTag bool            `db:"ignore_auto_tag" json:"ignore_auto_tag"`
 	CreatedAt     SQLiteTimestamp `db:"created_at" json:"created_at"`
 	UpdatedAt     SQLiteTimestamp `db:"updated_at" json:"updated_at"`
@@ -13,6 +17,7 @@ type Tag struct {
 type TagPartial struct {
 	ID            int              `db:"id" json:"id"`
 	Name          *string          `db:"name" json:"name"` // TODO make schema not null
+	Description   *sql.NullString  `db:"description" json:"description"`
 	IgnoreAutoTag *bool            `db:"ignore_auto_tag" json:"ignore_auto_tag"`
 	CreatedAt     *SQLiteTimestamp `db:"created_at" json:"created_at"`
 	UpdatedAt     *SQLiteTimestamp `db:"updated_at" json:"updated_at"`
diff --git a/pkg/sqlite/database.go b/pkg/sqlite/database.go
index 26e4ead8c..0c913737a 100644
--- a/pkg/sqlite/database.go
+++ b/pkg/sqlite/database.go
@@ -22,7 +22,7 @@ import (
 	"github.com/stashapp/stash/pkg/logger"
 )
 
-var appSchemaVersion uint = 35
+var appSchemaVersion uint = 36
 
 //go:embed migrations/*.sql
 var migrationsBox embed.FS
diff --git a/pkg/sqlite/migrations/36_tags_description.up.sql b/pkg/sqlite/migrations/36_tags_description.up.sql
new file mode 100644
index 000000000..edee18dc6
--- /dev/null
+++ b/pkg/sqlite/migrations/36_tags_description.up.sql
@@ -0,0 +1 @@
+ALTER TABLE `tags` ADD COLUMN `description` text;
diff --git a/pkg/tag/export.go b/pkg/tag/export.go
index 20c1b4adc..93f5e97b3 100644
--- a/pkg/tag/export.go
+++ b/pkg/tag/export.go
@@ -20,6 +20,7 @@ type FinderAliasImageGetter interface {
 func ToJSON(ctx context.Context, reader FinderAliasImageGetter, tag *models.Tag) (*jsonschema.Tag, error) {
 	newTagJSON := jsonschema.Tag{
 		Name:          tag.Name,
+		Description:   tag.Description.String,
 		IgnoreAutoTag: tag.IgnoreAutoTag,
 		CreatedAt:     json.JSONTime{Time: tag.CreatedAt.Timestamp},
 		UpdatedAt:     json.JSONTime{Time: tag.UpdatedAt.Timestamp},
diff --git a/pkg/tag/export_test.go b/pkg/tag/export_test.go
index 255c940dd..e7a68aaf1 100644
--- a/pkg/tag/export_test.go
+++ b/pkg/tag/export_test.go
@@ -2,6 +2,7 @@ package tag
 
 import (
 	"context"
+	"database/sql"
 	"errors"
 
 	"github.com/stashapp/stash/pkg/models"
@@ -23,7 +24,10 @@ const (
 	errParentsID  = 6
 )
 
-const tagName = "testTag"
+const (
+	tagName     = "testTag"
+	description = "description"
+)
 
 var (
 	autoTagIgnored = true
@@ -33,8 +37,12 @@ var (
 
 func createTag(id int) models.Tag {
 	return models.Tag{
-		ID:            id,
-		Name:          tagName,
+		ID:   id,
+		Name: tagName,
+		Description: sql.NullString{
+			String: description,
+			Valid:  true,
+		},
 		IgnoreAutoTag: autoTagIgnored,
 		CreatedAt: models.SQLiteTimestamp{
 			Timestamp: createTime,
@@ -48,6 +56,7 @@ func createTag(id int) models.Tag {
 func createJSONTag(aliases []string, image string, parents []string) *jsonschema.Tag {
 	return &jsonschema.Tag{
 		Name:          tagName,
+		Description:   description,
 		Aliases:       aliases,
 		IgnoreAutoTag: autoTagIgnored,
 		CreatedAt: json.JSONTime{
diff --git a/pkg/tag/import.go b/pkg/tag/import.go
index 937ea2359..9a802872d 100644
--- a/pkg/tag/import.go
+++ b/pkg/tag/import.go
@@ -2,6 +2,7 @@ package tag
 
 import (
 	"context"
+	"database/sql"
 	"fmt"
 
 	"github.com/stashapp/stash/pkg/models"
@@ -42,6 +43,7 @@ type Importer struct {
 func (i *Importer) PreImport(ctx context.Context) error {
 	i.tag = models.Tag{
 		Name:          i.Input.Name,
+		Description:   sql.NullString{String: i.Input.Description, Valid: true},
 		IgnoreAutoTag: i.Input.IgnoreAutoTag,
 		CreatedAt:     models.SQLiteTimestamp{Timestamp: i.Input.CreatedAt.GetTime()},
 		UpdatedAt:     models.SQLiteTimestamp{Timestamp: i.Input.UpdatedAt.GetTime()},
diff --git a/pkg/tag/import_test.go b/pkg/tag/import_test.go
index e4fb3ce8d..991d36cf5 100644
--- a/pkg/tag/import_test.go
+++ b/pkg/tag/import_test.go
@@ -40,6 +40,7 @@ func TestImporterPreImport(t *testing.T) {
 	i := Importer{
 		Input: jsonschema.Tag{
 			Name:          tagName,
+			Description:   description,
 			Image:         invalidImage,
 			IgnoreAutoTag: autoTagIgnored,
 		},
diff --git a/ui/v2.5/src/components/Settings/SettingsInterfacePanel/SettingsInterfacePanel.tsx b/ui/v2.5/src/components/Settings/SettingsInterfacePanel/SettingsInterfacePanel.tsx
index 07e090a2f..498b5b33a 100644
--- a/ui/v2.5/src/components/Settings/SettingsInterfacePanel/SettingsInterfacePanel.tsx
+++ b/ui/v2.5/src/components/Settings/SettingsInterfacePanel/SettingsInterfacePanel.tsx
@@ -247,6 +247,13 @@ export const SettingsInterfacePanel: React.FC = () => {
         />
       </SettingSection>
       <SettingSection headingID="config.ui.tag_panel.heading">
+        <BooleanSetting
+          id="show-tag-card-on-hover"
+          headingID="config.ui.show_tag_card_on_hover.heading"
+          subHeadingID="config.ui.show_tag_card_on_hover.description"
+          checked={ui.showTagCardOnHover ?? true}
+          onChange={(v) => saveUI({ showTagCardOnHover: v })}
+        />
         <BooleanSetting
           id="show-child-tagged-content"
           headingID="config.ui.tag_panel.options.show_child_tagged_content.heading"
diff --git a/ui/v2.5/src/components/Shared/Select.tsx b/ui/v2.5/src/components/Shared/Select.tsx
index f90a69432..7bd85eba0 100644
--- a/ui/v2.5/src/components/Shared/Select.tsx
+++ b/ui/v2.5/src/components/Shared/Select.tsx
@@ -27,6 +27,7 @@ import { ConfigurationContext } from "src/hooks/Config";
 import { useIntl } from "react-intl";
 import { objectTitle } from "src/core/files";
 import { galleryTitle } from "src/core/galleries";
+import { TagPopover } from "../Tags/TagPopover";
 
 export type ValidTypes =
   | GQL.SlimPerformerDataFragment
@@ -659,7 +660,11 @@ export const TagSelect: React.FC<IFilterProps & { excludeIds?: string[] }> = (
       };
     }
 
-    return <reactSelectComponents.Option {...thisOptionProps} />;
+    return (
+      <TagPopover id={optionProps.data.value}>
+        <reactSelectComponents.Option {...thisOptionProps} />
+      </TagPopover>
+    );
   };
 
   const filterOption = (option: Option, rawInput: string): boolean => {
diff --git a/ui/v2.5/src/components/Shared/TagLink.tsx b/ui/v2.5/src/components/Shared/TagLink.tsx
index 441c0c3ac..dedb8b6e3 100644
--- a/ui/v2.5/src/components/Shared/TagLink.tsx
+++ b/ui/v2.5/src/components/Shared/TagLink.tsx
@@ -14,6 +14,7 @@ import TextUtils from "src/utils/text";
 import { objectTitle } from "src/core/files";
 import { galleryTitle } from "src/core/galleries";
 import * as GQL from "src/core/generated-graphql";
+import { TagPopover } from "../Tags/TagPopover";
 
 interface IFile {
   path: string;
@@ -37,6 +38,7 @@ interface IProps {
 }
 
 export const TagLink: React.FC<IProps> = (props: IProps) => {
+  let id: string = "";
   let link: string = "#";
   let title: string = "";
   if (props.tag) {
@@ -55,6 +57,7 @@ export const TagLink: React.FC<IProps> = (props: IProps) => {
         link = NavUtils.makeTagImagesUrl(props.tag);
         break;
     }
+    id = props.tag.id || "";
     title = props.tag.name || "";
   } else if (props.performer) {
     link = NavUtils.makePerformerScenesUrl(props.performer);
@@ -76,7 +79,9 @@ export const TagLink: React.FC<IProps> = (props: IProps) => {
   }
   return (
     <Badge className={cx("tag-item", props.className)} variant="secondary">
-      <Link to={link}>{title}</Link>
+      <TagPopover id={id}>
+        <Link to={link}>{title}</Link>
+      </TagPopover>
     </Badge>
   );
 };
diff --git a/ui/v2.5/src/components/Tags/TagCard.tsx b/ui/v2.5/src/components/Tags/TagCard.tsx
index 3bb2418ec..82286d899 100644
--- a/ui/v2.5/src/components/Tags/TagCard.tsx
+++ b/ui/v2.5/src/components/Tags/TagCard.tsx
@@ -4,7 +4,7 @@ import { Link } from "react-router-dom";
 import * as GQL from "src/core/generated-graphql";
 import { NavUtils } from "src/utils";
 import { FormattedMessage } from "react-intl";
-import { Icon } from "../Shared";
+import { Icon, TruncatedText } from "../Shared";
 import { GridCard } from "../Shared/GridCard";
 import { PopoverCountButton } from "../Shared/PopoverCountButton";
 import { faMapMarkerAlt, faUser } from "@fortawesome/free-solid-svg-icons";
@@ -24,6 +24,18 @@ export const TagCard: React.FC<IProps> = ({
   selected,
   onSelectedChanged,
 }) => {
+  function maybeRenderDescription() {
+    if (tag.description) {
+      return (
+        <TruncatedText
+          className="tag-description"
+          text={tag.description}
+          lineCount={3}
+        />
+      );
+    }
+  }
+
   function maybeRenderParents() {
     if (tag.parents.length === 1) {
       const parent = tag.parents[0];
@@ -181,6 +193,7 @@ export const TagCard: React.FC<IProps> = ({
       }
       details={
         <>
+          {maybeRenderDescription()}
           {maybeRenderParents()}
           {maybeRenderChildren()}
           {maybeRenderPopoverButtonGroup()}
diff --git a/ui/v2.5/src/components/Tags/TagDetails/Tag.tsx b/ui/v2.5/src/components/Tags/TagDetails/Tag.tsx
index b5dc4618b..7d8adbffb 100644
--- a/ui/v2.5/src/components/Tags/TagDetails/Tag.tsx
+++ b/ui/v2.5/src/components/Tags/TagDetails/Tag.tsx
@@ -267,6 +267,7 @@ const TagPage: React.FC<IProps> = ({ tag }) => {
               renderImage()
             )}
             <h2>{tag.name}</h2>
+            <p>{tag.description}</p>
           </div>
           {!isEditing ? (
             <>
diff --git a/ui/v2.5/src/components/Tags/TagDetails/TagEditPanel.tsx b/ui/v2.5/src/components/Tags/TagDetails/TagEditPanel.tsx
index 40b406beb..282340130 100644
--- a/ui/v2.5/src/components/Tags/TagDetails/TagEditPanel.tsx
+++ b/ui/v2.5/src/components/Tags/TagDetails/TagEditPanel.tsx
@@ -47,6 +47,7 @@ export const TagEditPanel: React.FC<ITagEditPanel> = ({
 
   const schema = yup.object({
     name: yup.string().required(),
+    description: yup.string().optional().nullable(),
     aliases: yup
       .array(yup.string().required())
       .optional()
@@ -65,6 +66,7 @@ export const TagEditPanel: React.FC<ITagEditPanel> = ({
 
   const initialValues = {
     name: tag?.name,
+    description: tag?.description,
     aliases: tag?.aliases,
     parent_ids: (tag?.parents ?? []).map((t) => t.id),
     child_ids: (tag?.children ?? []).map((t) => t.id),
@@ -167,6 +169,20 @@ export const TagEditPanel: React.FC<ITagEditPanel> = ({
           </Col>
         </Form.Group>
 
+        <Form.Group controlId="description" as={Row}>
+          {FormUtils.renderLabel({
+            title: intl.formatMessage({ id: "description" }),
+          })}
+          <Col xs={9}>
+            <Form.Control
+              as="textarea"
+              className="text-input"
+              placeholder={intl.formatMessage({ id: "description" })}
+              {...formik.getFieldProps("description")}
+            />
+          </Col>
+        </Form.Group>
+
         <Form.Group controlId="parent_tags" as={Row}>
           {FormUtils.renderLabel({
             title: intl.formatMessage({ id: "parent_tags" }),
diff --git a/ui/v2.5/src/components/Tags/TagPopover.tsx b/ui/v2.5/src/components/Tags/TagPopover.tsx
new file mode 100644
index 000000000..8ec2ff36e
--- /dev/null
+++ b/ui/v2.5/src/components/Tags/TagPopover.tsx
@@ -0,0 +1,59 @@
+import React from "react";
+import { ErrorMessage, LoadingIndicator } from "../Shared";
+import { HoverPopover } from "src/components/Shared";
+import { useFindTag } from "../../core/StashService";
+import { TagCard } from "./TagCard";
+import { ConfigurationContext } from "../../hooks/Config";
+import { IUIConfig } from "src/core/config";
+
+interface ITagPopoverProps {
+  id?: string;
+}
+
+export const TagPopoverCard: React.FC<ITagPopoverCardProps> = ({ id }) => {
+  const { data, loading, error } = useFindTag(id ?? "");
+
+  if (loading)
+    return (
+      <div className="tag-popover-card-placeholder">
+        <LoadingIndicator card={true} message={""} />
+      </div>
+    );
+  if (error) return <ErrorMessage error={error.message} />;
+  if (!data?.findTag)
+    return <ErrorMessage error={`No tag found with id ${id}.`} />;
+
+  const tag = data.findTag;
+
+  return (
+    <div className="tag-popover-card">
+      <TagCard tag={tag} zoomIndex={0} />
+    </div>
+  );
+};
+
+export const TagPopover: React.FC<ITagPopoverProps> = ({ id, children }) => {
+  const { configuration: config } = React.useContext(ConfigurationContext);
+
+  const showTagCardOnHover =
+    (config?.ui as IUIConfig)?.showTagCardOnHover ?? true;
+
+  if (!id || !showTagCardOnHover) {
+    return <>{children}</>;
+  }
+
+  return (
+    <HoverPopover
+      placement={"top"}
+      enterDelay={500}
+      leaveDelay={100}
+      content={<TagPopoverCard id={id} />}
+    >
+      {children}
+    </HoverPopover>
+  );
+};
+
+interface ITagPopoverCardProps {
+  id?: string;
+}
diff --git a/ui/v2.5/src/components/Tags/styles.scss b/ui/v2.5/src/components/Tags/styles.scss
index a459874ec..ba325207e 100644
--- a/ui/v2.5/src/components/Tags/styles.scss
+++ b/ui/v2.5/src/components/Tags/styles.scss
@@ -43,3 +43,28 @@
 #tag-merge-menu .dropdown-item {
   align-items: center;
 }
+
+.tag-card {
+  .tag-description + div {
+    margin-top: 1rem;
+  }
+}
+
+.tag-popover-card-placeholder {
+  display: flex;
+  max-width: 240px;
+  min-height: 314px;
+  width: calc(100vw - 2rem);
+}
+
+.tag-popover-card {
+  padding: 0.5rem;
+  text-align: left;
+
+  .card {
+    background: transparent;
+    box-shadow: none;
+    max-width: calc(100vw - 2rem);
+    padding: 0;
+  }
+}
diff --git a/ui/v2.5/src/core/config.ts b/ui/v2.5/src/core/config.ts
index bdca294e4..fa39470a6 100644
--- a/ui/v2.5/src/core/config.ts
+++ b/ui/v2.5/src/core/config.ts
@@ -30,6 +30,7 @@ export interface IUIConfig {
   lastNoteSeen?: number;
   showChildTagContent?: boolean;
   showChildStudioContent?: boolean;
+  showTagCardOnHover?: boolean;
 }
 
 function recentlyReleased(
diff --git a/ui/v2.5/src/docs/en/Changelog/v0170.md b/ui/v2.5/src/docs/en/Changelog/v0170.md
index 8e219eb8e..ba317a15d 100644
--- a/ui/v2.5/src/docs/en/Changelog/v0170.md
+++ b/ui/v2.5/src/docs/en/Changelog/v0170.md
@@ -5,6 +5,7 @@ After migrating, please run a scan on your entire library to populate missing da
 * Import/export schema has changed and is incompatible with the previous version.
 
 ### ✨ New Features
+* Added description field to Tags. ([#2708](https://github.com/stashapp/stash/pull/2708))
 * Added option to include sub-studio/sub-tag content in Studio/Tag page. ([#2832](https://github.com/stashapp/stash/pull/2832))
 * Added backup location configuration setting. ([#2953](https://github.com/stashapp/stash/pull/2953))
 * Allow overriding UI localisation strings. ([#2837](https://github.com/stashapp/stash/pull/2837))
@@ -14,6 +15,7 @@ After migrating, please run a scan on your entire library to populate missing da
 * Added release notes dialog. ([#2726](https://github.com/stashapp/stash/pull/2726))
 
 ### 🎨 Improvements
+* Optionally show Tag card when hovering over tag badge. ([#2708](https://github.com/stashapp/stash/pull/2708))
 * Show default thumbnails for scenes and images where the actual image is not found. ([#2949](https://github.com/stashapp/stash/pull/2949))
 * Added unix timestamp parsing in the `parseDate` scraper post processor. ([#2817](https://github.com/stashapp/stash/pull/2817))
 * Improve matching scene order in the tagger to prioritise matching phashes and durations. ([#2840](https://github.com/stashapp/stash/pull/2840)) 
diff --git a/ui/v2.5/src/locales/en-GB.json b/ui/v2.5/src/locales/en-GB.json
index d0f2b7247..a487867a7 100644
--- a/ui/v2.5/src/locales/en-GB.json
+++ b/ui/v2.5/src/locales/en-GB.json
@@ -500,6 +500,10 @@
         "description": "Show or hide different types of content on the navigation bar",
         "heading": "Menu Items"
       },
+      "show_tag_card_on_hover": {
+        "description": "Show tag card when hovering tag badges",
+        "heading": "Tag card tooltips"
+      },
       "performers": {
         "options": {
           "image_location": {
@@ -615,6 +619,7 @@
   "death_date": "Death Date",
   "death_year": "Death Year",
   "descending": "Descending",
+  "description": "Description",
   "detail": "Detail",
   "details": "Details",
   "developmentVersion": "Development Version",