diff --git a/app/Http/Controllers/PiggyBank/IndexController.php b/app/Http/Controllers/PiggyBank/IndexController.php
index 2d12fd09b0..6ed9abd464 100644
--- a/app/Http/Controllers/PiggyBank/IndexController.php
+++ b/app/Http/Controllers/PiggyBank/IndexController.php
@@ -86,7 +86,7 @@ class IndexController extends Controller
         /** @var PiggyBank $piggy */
         foreach ($collection as $piggy) {
             $array      = $transformer->transform($piggy);
-            $groupOrder = $array['object_group_order'];
+            $groupOrder = (int) $array['object_group_order'];
             // make group array if necessary:
             $piggyBanks[$groupOrder] = $piggyBanks[$groupOrder] ?? [
                     'object_group_id'    => $array['object_group_id'],
@@ -109,19 +109,61 @@ class IndexController extends Controller
             }
 
             // calculate new interesting fields:
-            $accounts[$accountId]['left']    -= $array['current_amount'];
-            $accounts[$accountId]['saved']   += $array['current_amount'];
-            $accounts[$accountId]['target']  += $array['target_amount'];
-            $accounts[$accountId]['to_save'] += ($array['target_amount'] - $array['current_amount']);
-            $array['account_name']           = $account['name'];
+            $accounts[$accountId]['left']             -= $array['current_amount'];
+            $accounts[$accountId]['saved']            += $array['current_amount'];
+            $accounts[$accountId]['target']           += $array['target_amount'];
+            $accounts[$accountId]['to_save']          += ($array['target_amount'] - $array['current_amount']);
+            $array['account_name']                    = $account['name'];
             $piggyBanks[$groupOrder]['piggy_banks'][] = $array;
         }
+        // do a bunch of summaries.
+        $piggyBanks = $this->makeSums($piggyBanks);
 
         ksort($piggyBanks);
 
         return view('piggy-banks.index', compact('piggyBanks', 'accounts'));
     }
 
+    /**
+     * @param array $piggyBanks
+     *
+     * @return array
+     */
+    private function makeSums(array $piggyBanks): array
+    {
+        $sums = [];
+        foreach ($piggyBanks as $groupOrder => $group) {
+            $groupId = $group['object_group_id'];
+            foreach ($group['piggy_banks'] as $piggy) {
+                $currencyId                  = $piggy['currency_id'];
+                $sums[$groupId][$currencyId] = $sums[$groupId][$currencyId] ?? [
+                        'target'                  => '0',
+                        'saved'                   => '0',
+                        'left_to_save'            => '0',
+                        'save_per_month'          => '0',
+                        'currency_id'             => $currencyId,
+                        'currency_code'           => $piggy['currency_code'],
+                        'currency_symbol'         => $piggy['currency_symbol'],
+                        'currency_decimal_places' => $piggy['currency_decimal_places'],
+                    ];
+                // target_amount
+                // current_amount
+                // left_to_save
+                // save_per_month
+                $sums[$groupId][$currencyId]['target'] = bcadd($sums[$groupId][$currencyId]['target'], (string) $piggy['target_amount']);
+                $sums[$groupId][$currencyId]['saved'] = bcadd($sums[$groupId][$currencyId]['saved'], (string) $piggy['current_amount']);
+                $sums[$groupId][$currencyId]['left_to_save'] = bcadd($sums[$groupId][$currencyId]['left_to_save'], (string) $piggy['left_to_save']);
+                $sums[$groupId][$currencyId]['save_per_month'] = bcadd($sums[$groupId][$currencyId]['save_per_month'], (string) $piggy['save_per_month']);
+            }
+        }
+        foreach ($piggyBanks as $groupOrder => $group) {
+            $groupId                         = $group['object_group_id'];
+            $piggyBanks[$groupOrder]['sums'] = $sums[$groupId];
+        }
+
+        return $piggyBanks;
+    }
+
     /**
      * Set the order of a piggy bank.
      *
diff --git a/app/Repositories/ObjectGroup/ObjectGroupRepository.php b/app/Repositories/ObjectGroup/ObjectGroupRepository.php
index b1beb1d4f8..17e68e492f 100644
--- a/app/Repositories/ObjectGroup/ObjectGroupRepository.php
+++ b/app/Repositories/ObjectGroup/ObjectGroupRepository.php
@@ -5,6 +5,7 @@ namespace FireflyIII\Repositories\ObjectGroup;
 
 use DB;
 use FireflyIII\Models\ObjectGroup;
+use FireflyIII\Models\PiggyBank;
 use FireflyIII\User;
 use Illuminate\Support\Collection;
 use Log;
@@ -123,6 +124,12 @@ class ObjectGroupRepository implements ObjectGroupRepositoryInterface
      */
     public function destroy(ObjectGroup $objectGroup): void
     {
+        $list = $objectGroup->piggyBanks;
+        /** @var PiggyBank $piggy */
+        foreach($list as $piggy) {
+            $piggy->objectGroups()->sync([]);
+            $piggy->save();
+        }
         $objectGroup->delete();
     }
 
diff --git a/resources/views/v1/list/piggy-banks.twig b/resources/views/v1/list/piggy-banks.twig
index d7f6c5190f..a7f165bee3 100644
--- a/resources/views/v1/list/piggy-banks.twig
+++ b/resources/views/v1/list/piggy-banks.twig
@@ -96,6 +96,36 @@
                     </td>
                 </tr>
             {% endfor %}
+            <tr>
+                <td class="visible-xs visible-sm hidden-md hidden-lg">&nbsp;</td>
+                <td class="visible-xs visible-sm hidden-md hidden-lg">&nbsp;</td>
+                <td>&nbsp;</td> {# handle #}
+                <td class="hidden-sm hidden-xs">&nbsp;</td> {# buttons #}
+                <td>&nbsp;</td>
+                <td style="text-align: right;">
+                    {% for sum in objectGroup.sums %}
+                        {{ formatAmountBySymbol(sum.saved, sum.currency_symbol, sum.currency_decimal_places) }}<br />
+                    {% endfor %}
+                    </td>
+                <td class="hidden-sm hidden-xs">&nbsp;</td> {# remove money #}
+                <td class="hidden-sm hidden-xs">&nbsp;</td> {# progress#}
+                <td class="hidden-sm hidden-xs">&nbsp;</td> {# add money #}
+                <td class="hidden-sm hidden-xs" style="text-align: right;">
+                    {% for sum in objectGroup.sums %}
+                        {{ formatAmountBySymbol(sum.target, sum.currency_symbol, sum.currency_decimal_places) }}<br />
+                    {% endfor %}
+                </td>
+                <td class="hidden-sm hidden-xs" style="text-align: right;">
+                    {% for sum in objectGroup.sums %}
+                        {{ formatAmountBySymbol(sum.left_to_save, sum.currency_symbol, sum.currency_decimal_places) }}<br />
+                    {% endfor %}
+                </td>
+                <td class="hidden-sm hidden-xs" style="text-align: right;">
+                    {% for sum in objectGroup.sums %}
+                        {{ formatAmountBySymbol(sum.save_per_month, sum.currency_symbol, sum.currency_decimal_places) }}<br />
+                    {% endfor %}
+                </td>
+            </tr>
             </tbody>
         {% endif %}
     {% endfor %}