diff --git a/app/Api/V2/Controllers/UserGroup/DestroyController.php b/app/Api/V2/Controllers/UserGroup/DestroyController.php
index 27254ace92..123b9eded6 100644
--- a/app/Api/V2/Controllers/UserGroup/DestroyController.php
+++ b/app/Api/V2/Controllers/UserGroup/DestroyController.php
@@ -26,10 +26,52 @@ declare(strict_types=1);
 namespace FireflyIII\Api\V2\Controllers\UserGroup;
 
 use FireflyIII\Api\V2\Controllers\Controller;
+use FireflyIII\Enums\UserRoleEnum;
+use FireflyIII\Models\UserGroup;
+use FireflyIII\Repositories\UserGroup\UserGroupRepositoryInterface;
+use FireflyIII\User;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 
 /**
  * Class DestroyController
  */
 class DestroyController extends Controller
 {
+    private UserGroupRepositoryInterface $repository;
+
+    /**
+     *
+     */
+    public function __construct()
+    {
+        parent::__construct();
+        $this->middleware(
+            function ($request, $next) {
+                $this->repository = app(UserGroupRepositoryInterface::class);
+
+                return $next($request);
+            }
+        );
+    }
+
+    /**
+     * @param Request   $request
+     * @param UserGroup $userGroup
+     *
+     * @return JsonResponse
+     */
+    public function destroy(Request $request, UserGroup $userGroup): JsonResponse
+    {
+        /** @var User $user */
+        $user = auth()->user();
+        // need owner role or system owner role to delete user group.
+        $access = $user->hasRoleInGroup($userGroup, UserRoleEnum::OWNER, false, true);
+        if (false === $access) {
+            throw new NotFoundHttpException();
+        }
+        $this->repository->destroy($userGroup);
+        return response()->json([], 204);
+    }
 }
diff --git a/app/Models/CurrencyExchangeRate.php b/app/Models/CurrencyExchangeRate.php
index 05c23410b9..7147f80134 100644
--- a/app/Models/CurrencyExchangeRate.php
+++ b/app/Models/CurrencyExchangeRate.php
@@ -29,6 +29,7 @@ use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\SoftDeletes;
 use Illuminate\Support\Carbon;
 
 /**
@@ -66,6 +67,8 @@ use Illuminate\Support\Carbon;
  */
 class CurrencyExchangeRate extends Model
 {
+    use SoftDeletes;
+
     /** @var array Convert these fields to other data types */
     protected $casts
                         = [
@@ -108,7 +111,7 @@ class CurrencyExchangeRate extends Model
     protected function rate(): Attribute
     {
         return Attribute::make(
-            get: fn ($value) => (string)$value,
+            get: fn($value) => (string)$value,
         );
     }
 
@@ -118,7 +121,7 @@ class CurrencyExchangeRate extends Model
     protected function userRate(): Attribute
     {
         return Attribute::make(
-            get: fn ($value) => (string)$value,
+            get: fn($value) => (string)$value,
         );
     }
 }
diff --git a/app/Models/UserGroup.php b/app/Models/UserGroup.php
index 20e68bfd51..21941ef0d9 100644
--- a/app/Models/UserGroup.php
+++ b/app/Models/UserGroup.php
@@ -109,6 +109,16 @@ class UserGroup extends Model
         return $this->hasMany(Account::class);
     }
 
+    /**
+     * Link to attachments.
+     *
+     * @return HasMany
+     */
+    public function attachments(): HasMany
+    {
+        return $this->hasMany(Attachment::class);
+    }
+
     /**
      * Link to bills.
      *
@@ -139,6 +149,26 @@ class UserGroup extends Model
         return $this->hasMany(Budget::class);
     }
 
+    /**
+     * Link to categories.
+     *
+     * @return HasMany
+     */
+    public function categories(): HasMany
+    {
+        return $this->hasMany(Category::class);
+    }
+
+    /**
+     * Link to exchange rates.
+     *
+     * @return HasMany
+     */
+    public function currencyExchangeRates(): HasMany
+    {
+        return $this->hasMany(CurrencyExchangeRate::class);
+    }
+
     /**
      *
      * @return HasMany
@@ -148,6 +178,14 @@ class UserGroup extends Model
         return $this->hasMany(GroupMembership::class);
     }
 
+    /**
+     * @return HasMany
+     */
+    public function objectGroups(): HasMany
+    {
+        return $this->hasMany(ObjectGroup::class);
+    }
+
     /**
      * Link to piggy banks.
      *
@@ -158,6 +196,46 @@ class UserGroup extends Model
         return $this->hasManyThrough(PiggyBank::class, Account::class);
     }
 
+    /**
+     * @return HasMany
+     */
+    public function recurrences(): HasMany
+    {
+        return $this->hasMany(Recurrence::class);
+    }
+
+    /**
+     * @return HasMany
+     */
+    public function ruleGroups(): HasMany
+    {
+        return $this->hasMany(RuleGroup::class);
+    }
+
+    /**
+     * @return HasMany
+     */
+    public function rules(): HasMany
+    {
+        return $this->hasMany(Rule::class);
+    }
+
+    /**
+     * @return HasMany
+     */
+    public function tags(): HasMany
+    {
+        return $this->hasMany(Tag::class);
+    }
+
+    /**
+     * @return HasMany
+     */
+    public function transactionGroups(): HasMany
+    {
+        return $this->hasMany(TransactionGroup::class);
+    }
+
     /**
      * Link to transaction journals.
      *
@@ -167,4 +245,12 @@ class UserGroup extends Model
     {
         return $this->hasMany(TransactionJournal::class);
     }
+
+    /**
+     * @return HasMany
+     */
+    public function webhooks(): HasMany
+    {
+        return $this->hasMany(Webhook::class);
+    }
 }
diff --git a/app/Repositories/UserGroup/UserGroupRepository.php b/app/Repositories/UserGroup/UserGroupRepository.php
index 4071067c08..333800766b 100644
--- a/app/Repositories/UserGroup/UserGroupRepository.php
+++ b/app/Repositories/UserGroup/UserGroupRepository.php
@@ -39,6 +39,61 @@ class UserGroupRepository implements UserGroupRepositoryInterface
 {
     private User $user;
 
+    /**
+     * @inheritDoc
+     */
+    public function destroy(UserGroup $userGroup): void
+    {
+        app('log')->debug(sprintf('Going to destroy user group #%d ("%s").', $userGroup->id, $userGroup->title));
+        $memberships = $userGroup->groupMemberships()->get();
+        /** @var GroupMembership $membership */
+        foreach ($memberships as $membership) {
+            /** @var User $user */
+            $user = $membership->user()->first();
+            if (null === $user) {
+                continue;
+            }
+            app('log')->debug(sprintf('Processing membership #%d (user #%d "%s")', $membership->id, $user->id, $user->email));
+            // user has memberships of other groups?
+            $count = $user->groupMemberships()->where('user_group_id', '!=', $userGroup->id)->count();
+            if (0 === $count) {
+                app('log')->debug('User has no other memberships and needs a new administration.');
+                // makeNewAdmin()
+                // assignToUser().
+            }
+            // user has other memberships, select one at random and assign it to the user.
+            if ($count > 0) {
+                // findAndAssign()
+            }
+            // deleteMembership()
+        }
+        // all users are now moved away from user group.
+        // time to DESTROY all objects.
+        // TODO piggy banks linked to accounts were deleting.
+        $userGroup->piggyBanks()->delete();
+        $userGroup->accounts()->delete();
+        $userGroup->availableBudgets()->delete();
+        $userGroup->attachments()->delete();
+        $userGroup->bills()->delete();
+        $userGroup->budgets()->delete();
+        $userGroup->categories()->delete();
+        $userGroup->currencyExchangeRates()->delete();
+        $userGroup->objectGroups()->delete();
+        $userGroup->recurrences()->delete();
+        $userGroup->rules()->delete();
+        $userGroup->ruleGroups()->delete();
+        $userGroup->tags()->delete();
+        $userGroup->transactionJournals()->delete(); // TODO needs delete service probably.
+        $userGroup->transactionGroups()->delete();   // TODO needs delete service probably.
+        $userGroup->webhooks()->delete();
+
+        // user group deletion should also delete everything else.
+        // for all users, if this is the primary user group switch to the first alternative.
+        // if they have no other memberships, create a new user group for them.
+        $userGroup->delete();
+
+    }
+
     /**
      * Returns all groups the user is member in.
      *
diff --git a/app/Repositories/UserGroup/UserGroupRepositoryInterface.php b/app/Repositories/UserGroup/UserGroupRepositoryInterface.php
index 143d7b2a60..f703d917a0 100644
--- a/app/Repositories/UserGroup/UserGroupRepositoryInterface.php
+++ b/app/Repositories/UserGroup/UserGroupRepositoryInterface.php
@@ -25,6 +25,7 @@ declare(strict_types=1);
 
 namespace FireflyIII\Repositories\UserGroup;
 
+use FireflyIII\Models\UserGroup;
 use FireflyIII\User;
 use Illuminate\Contracts\Auth\Authenticatable;
 use Illuminate\Support\Collection;
@@ -34,6 +35,13 @@ use Illuminate\Support\Collection;
  */
 interface UserGroupRepositoryInterface
 {
+    /**
+     * @param UserGroup $userGroup
+     *
+     * @return void
+     */
+    public function destroy(UserGroup $userGroup): void;
+
     /**
      * @return Collection
      */
diff --git a/routes/api.php b/routes/api.php
index 0b9456f0c2..e7ea26fe69 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -83,7 +83,7 @@ Route::group(
  */
 Route::group(
     [
-        'namespace' => 'FireflyIII\Api\V2\Controllers',
+        'namespace' => 'FireflyIII\Api\V2\Controllers\Summary',
         'prefix'    => 'v2/net-worth',
         'as'        => 'api.v2.net-worth.',
     ],
@@ -215,6 +215,7 @@ Route::group(
         Route::get('', ['uses' => 'ShowController@index', 'as' => 'index']);
         Route::post('', ['uses' => 'StoreController@store', 'as' => 'store']);
         Route::get('{userGroup}', ['uses' => 'ShowController@show', 'as' => 'show']);
+        Route::delete('{userGroup}', ['uses' => 'DestroyController@destroy', 'as' => 'destroy']);
     }
 );