diff --git a/includes/class-newspack-listings-api.php b/includes/class-newspack-listings-api.php
index f7ec901d..8f6e4dfe 100644
--- a/includes/class-newspack-listings-api.php
+++ b/includes/class-newspack-listings-api.php
@@ -146,21 +146,21 @@ public static function build_listings_query( $query, $args = [] ) {
 		}
 		if ( ! empty( $query['categories'] ) ) {
 			$args['tax_query'][] = [
-				'taxonomy' => Core::NEWSPACK_LISTINGS_CAT,
+				'taxonomy' => 'category',
 				'field'    => 'term_id',
 				'terms'    => $query['categories'],
 			];
 		}
 		if ( ! empty( $query['tags'] ) ) {
 			$args['tax_query'][] = [
-				'taxonomy' => Core::NEWSPACK_LISTINGS_TAG,
+				'taxonomy' => 'post_tag',
 				'field'    => 'term_id',
 				'terms'    => $query['tags'],
 			];
 		}
 		if ( ! empty( $query['categoryExclusions'] ) ) {
 			$args['tax_query'][] = [
-				'taxonomy' => Core::NEWSPACK_LISTINGS_CAT,
+				'taxonomy' => 'category',
 				'field'    => 'term_id',
 				'terms'    => $query['categoryExclusions'],
 				'operator' => 'NOT IN',
@@ -168,7 +168,7 @@ public static function build_listings_query( $query, $args = [] ) {
 		}
 		if ( ! empty( $query['tagExclusions'] ) ) {
 			$args['tax_query'][] = [
-				'taxonomy' => Core::NEWSPACK_LISTINGS_TAG,
+				'taxonomy' => 'post_tag',
 				'field'    => 'term_id',
 				'terms'    => $query['tagExclusions'],
 				'operator' => 'NOT IN',
@@ -259,12 +259,12 @@ function( $post ) use ( $attributes, $fields, $is_amp, $next_page, $query ) {
 
 						// If $fields includes category, get the post categories.
 						if ( in_array( 'category', $fields ) ) {
-							$item['category'] = get_the_terms( $post->ID, Core::NEWSPACK_LISTINGS_CAT );
+							$item['category'] = get_the_terms( $post->ID, 'category' );
 						}
 
 						// If $fields includes tags, get the post tags.
 						if ( in_array( 'tags', $fields ) ) {
-							$item['tags'] = get_the_terms( $post->ID, Core::NEWSPACK_LISTINGS_TAG );
+							$item['tags'] = get_the_terms( $post->ID, 'post_tag' );
 						}
 
 						// If $fields includes author and the post isn't set to hide author, get the post author.
@@ -340,7 +340,7 @@ public static function get_terms( $request ) {
 		$params = $request->get_params();
 
 		if ( empty( $params['taxonomy'] ) ) {
-			$params['taxonomy'] = Core::NEWSPACK_LISTINGS_CAT;
+			$params['taxonomy'] = 'category';
 		}
 
 		$terms = get_terms( $params );
diff --git a/includes/class-newspack-listings-blocks.php b/includes/class-newspack-listings-blocks.php
index b54de409..103a550a 100644
--- a/includes/class-newspack-listings-blocks.php
+++ b/includes/class-newspack-listings-blocks.php
@@ -80,10 +80,6 @@ public static function manage_editor_assets() {
 				'post_type_label' => get_post_type_object( $post_type )->labels->singular_name,
 				'post_type'       => $post_type,
 				'post_types'      => $post_types,
-				'taxonomies'      => [
-					'category' => Core::NEWSPACK_LISTINGS_CAT,
-					'tag'      => Core::NEWSPACK_LISTINGS_TAG,
-				],
 
 				// If we don't have ANY listings that can be added to a list yet, alert the editor so we can show messaging.
 				'no_listings'     => 0 === $total_count,
diff --git a/includes/class-newspack-listings-core.php b/includes/class-newspack-listings-core.php
index 165a65e0..986f5fec 100644
--- a/includes/class-newspack-listings-core.php
+++ b/includes/class-newspack-listings-core.php
@@ -16,7 +16,7 @@
 
 /**
  * Main Core class.
- * Sets up CPTs and taxonomies for listings.
+ * Sets up CPTs for listings.
  */
 final class Newspack_Listings_Core {
 
@@ -42,12 +42,6 @@ final class Newspack_Listings_Core {
 
 	];
 
-	/**
-	 * Custom taxonomy slugs for Newspack Listings.
-	 */
-	const NEWSPACK_LISTINGS_CAT = 'newspack_lst_cat';
-	const NEWSPACK_LISTINGS_TAG = 'newspack_lst_tag';
-
 	/**
 	 * The single instance of the class.
 	 *
@@ -73,9 +67,7 @@ public static function instance() {
 	 */
 	public function __construct() {
 		add_action( 'admin_menu', [ __CLASS__, 'add_plugin_page' ] );
-		add_filter( 'parent_file', [ __CLASS__, 'highlight_taxonomy_menu_items' ] );
 		add_action( 'init', [ __CLASS__, 'register_post_types' ] );
-		add_action( 'init', [ __CLASS__, 'register_taxonomies' ] );
 		add_filter( 'single_template', [ __CLASS__, 'set_default_template' ] );
 		add_action( 'save_post', [ __CLASS__, 'sync_post_meta' ], 10, 2 );
 		add_filter( 'newspack_listings_hide_author', [ __CLASS__, 'hide_author' ] );
@@ -101,16 +93,16 @@ public static function add_plugin_page() {
 		add_submenu_page(
 			'newspack-listings',
 			__( 'Newspack Listings: Categories', 'newspack-listings' ),
-			__( 'Listing Categories', 'newspack-listings' ),
+			__( 'Categories', 'newspack-listings' ),
 			'manage_categories',
-			'edit-tags.php?taxonomy=' . self::NEWSPACK_LISTINGS_CAT
+			'edit-tags.php?taxonomy=category'
 		);
 		add_submenu_page(
 			'newspack-listings',
 			__( 'Newspack Listings: Tags', 'newspack-listings' ),
-			__( 'Listing Tags', 'newspack-listings' ),
+			__( 'Tags', 'newspack-listings' ),
 			'manage_categories',
-			'edit-tags.php?taxonomy=' . self::NEWSPACK_LISTINGS_TAG
+			'edit-tags.php?taxonomy=post_tag'
 		);
 
 		// Settings menu link.
@@ -124,20 +116,6 @@ public static function add_plugin_page() {
 		);
 	}
 
-	/**
-	 * Hack to highlight category/tag menu items.
-	 * https://deluxeblogtips.com/move-taxonomy-admin-menu/
-	 *
-	 * @param string $parent_file The parent file.
-	 */
-	public static function highlight_taxonomy_menu_items( $parent_file ) {
-		if ( get_current_screen()->taxonomy == self::NEWSPACK_LISTINGS_CAT || get_current_screen()->taxonomy == self::NEWSPACK_LISTINGS_TAG ) {
-			$parent_file = 'newspack-listings';
-		}
-
-		return $parent_file;
-	}
-
 	/**
 	 * Is the current post a listings post type?
 	 *
@@ -169,6 +147,7 @@ public static function register_post_types() {
 			'show_in_rest' => true,
 			'show_ui'      => true,
 			'supports'     => [ 'editor', 'excerpt', 'title', 'author', 'custom-fields', 'thumbnail' ],
+			'taxonomies'   => [ 'category', 'post_tag' ],
 		];
 		$post_types_config = [
 			'event'       => [
@@ -272,54 +251,6 @@ public static function register_post_types() {
 		}
 	}
 
-	/**
-	 * Register custom taxonomies for Listings CPTs.
-	 */
-	public static function register_taxonomies() {
-		$prefix        = Settings::get_settings( 'permalink_prefix' );
-		$category_args = [
-			'hierarchical'  => true,
-			'public'        => true,
-			'rewrite'       => false, // phpcs:ignore Squiz.PHP.CommentedOutCode.Found [ 'hierarchical' => true, 'slug' => $prefix . '/category' ]
-			'show_in_menu'  => true,
-			'show_in_rest'  => true,
-			'show_tagcloud' => false,
-			'show_ui'       => true,
-		];
-		$tag_args      = [
-			'hierarchical'  => false,
-			'public'        => true,
-			'rewrite'       => false, // phpcs:ignore Squiz.PHP.CommentedOutCode.Found [ 'slug' => $prefix . '/tag' ],
-			'show_in_menu'  => true,
-			'show_in_rest'  => true,
-			'show_tagcloud' => false,
-			'show_ui'       => true,
-		];
-
-		// Register the taxonomies for all Listing CPTs.
-		$post_types = array_values( self::NEWSPACK_LISTINGS_POST_TYPES );
-		register_taxonomy( self::NEWSPACK_LISTINGS_CAT, $post_types, $category_args );
-		register_taxonomy( self::NEWSPACK_LISTINGS_TAG, $post_types, $tag_args );
-
-		// Better safe than sorry: https://developer.wordpress.org/reference/functions/register_taxonomy/#more-information.
-		foreach ( $post_types as $post_type ) {
-			register_taxonomy_for_object_type( self::NEWSPACK_LISTINGS_CAT, $post_type );
-			register_taxonomy_for_object_type( self::NEWSPACK_LISTINGS_TAG, $post_type );
-		}
-
-		// phpcs:ignore Squiz.PHP.CommentedOutCode.Found self::rewrite_taxonomy_urls();
-	}
-
-	/**
-	 * Create rewrite rules for prefixed taxonomy URLs.
-	 */
-	public static function rewrite_taxonomy_urls() {
-		$prefix = Settings::get_settings( 'permalink_prefix' );
-
-		add_rewrite_rule( '^' . $prefix . '/category/([^/]+)/?$', 'index.php?' . self::NEWSPACK_LISTINGS_CAT . '=$matches[1]', 'top' );
-		add_rewrite_rule( '^' . $prefix . '/tag/([^/]+)/?$', 'index.php?' . self::NEWSPACK_LISTINGS_TAG . '=$matches[1]', 'top' );
-	}
-
 	/**
 	 * Define and return meta fields for any Newspack Listings CPTs.
 	 *
@@ -727,11 +658,10 @@ function( $classes ) {
 	}
 
 	/**
-	 * Flush permalinks on plugin activation, ensuring that post types and taxonomies are registered first.
+	 * Flush permalinks on plugin activation, ensuring that post types are registered first.
 	 */
 	public static function activation_hook() {
 		self::register_post_types();
-		self::register_taxonomies();
 		flush_rewrite_rules(); // phpcs:ignore WordPressVIPMinimum.Functions.RestrictedFunctions.flush_rewrite_rules_flush_rewrite_rules
 	}
 }
diff --git a/src/components/sidebar-query-controls.js b/src/components/sidebar-query-controls.js
index 6a2c97b0..9f1239ed 100644
--- a/src/components/sidebar-query-controls.js
+++ b/src/components/sidebar-query-controls.js
@@ -65,8 +65,6 @@ class QueryControls extends Component {
 			return new Promise( resolve => resolve( [] ) );
 		}
 
-		const { taxonomies } = window.newspack_listings_data;
-
 		return apiFetch( {
 			path: addQueryArgs( '/newspack-listings/v1/terms', {
 				search,
@@ -74,7 +72,7 @@ class QueryControls extends Component {
 				_fields: 'id,name',
 				orderby: 'count',
 				order: 'desc',
-				taxonomy: taxonomies.category,
+				taxonomy: 'category',
 			} ),
 		} ).then( function( categories ) {
 			return categories.map( category => ( {
@@ -84,14 +82,12 @@ class QueryControls extends Component {
 		} );
 	};
 	fetchSavedCategories = categoryIDs => {
-		const { taxonomies } = window.newspack_listings_data;
-
 		return apiFetch( {
 			path: addQueryArgs( '/newspack-listings/v1/terms', {
 				per_page: 100,
 				_fields: 'id,name',
 				include: categoryIDs.join( ',' ),
-				taxonomy: taxonomies.category,
+				taxonomy: 'category',
 			} ),
 		} ).then( function( categories ) {
 			return categories.map( category => ( {
@@ -106,8 +102,6 @@ class QueryControls extends Component {
 			return new Promise( resolve => resolve( [] ) );
 		}
 
-		const { taxonomies } = window.newspack_listings_data;
-
 		return apiFetch( {
 			path: addQueryArgs( '/newspack-listings/v1/terms', {
 				search,
@@ -115,7 +109,7 @@ class QueryControls extends Component {
 				_fields: 'id,name',
 				orderby: 'count',
 				order: 'desc',
-				taxonomy: taxonomies.tag,
+				taxonomy: 'post_tag',
 			} ),
 		} ).then( function( tags ) {
 			return tags.map( tag => ( {
@@ -125,14 +119,12 @@ class QueryControls extends Component {
 		} );
 	};
 	fetchSavedTags = tagIDs => {
-		const { taxonomies } = window.newspack_listings_data;
-
 		return apiFetch( {
 			path: addQueryArgs( '/newspack-listings/v1/terms', {
 				per_page: 100,
 				_fields: 'id,name',
 				include: tagIDs.join( ',' ),
-				taxonomy: taxonomies.tag,
+				taxonomy: 'post_tag',
 			} ),
 		} ).then( function( tags ) {
 			return tags.map( tag => ( {
diff --git a/src/templates/listing.php b/src/templates/listing.php
index b3993abc..d93061d2 100644
--- a/src/templates/listing.php
+++ b/src/templates/listing.php
@@ -41,7 +41,7 @@ function( $data ) {
 			<div class="newspack-listings__listing-meta">
 				<?php
 				if ( $attributes['showCategory'] ) :
-					$categories = get_the_terms( $post->ID, Core::NEWSPACK_LISTINGS_CAT );
+					$categories = get_the_terms( $post->ID, 'category' );
 
 					if ( is_array( $categories ) && 0 < count( $categories ) ) :
 						?>
@@ -49,7 +49,7 @@ function( $data ) {
 							<?php
 							$category_index = 0;
 							foreach ( $categories as $category ) {
-								$term_url = get_term_link( $category->slug, Core::NEWSPACK_LISTINGS_CAT );
+								$term_url = get_term_link( $category->slug, 'category' );
 
 								if ( empty( $term_url ) ) {
 									$term_url = '#';
@@ -82,7 +82,7 @@ function( $data ) {
 
 				<?php
 				if ( $attributes['showTags'] ) :
-					$tags = get_the_terms( $post->ID, Core::NEWSPACK_LISTINGS_TAG );
+					$tags = get_the_terms( $post->ID, 'post_tag' );
 
 					if ( is_array( $tags ) && 0 < count( $tags ) ) :
 						?>