diff --git a/app/Api/V1/Controllers/Models/AvailableBudget/ShowController.php b/app/Api/V1/Controllers/Models/AvailableBudget/ShowController.php
index 582290ec21..3cecd9c500 100644
--- a/app/Api/V1/Controllers/Models/AvailableBudget/ShowController.php
+++ b/app/Api/V1/Controllers/Models/AvailableBudget/ShowController.php
@@ -28,6 +28,7 @@ use FireflyIII\Api\V1\Controllers\Controller;
 use FireflyIII\Exceptions\FireflyException;
 use FireflyIII\Models\AvailableBudget;
 use FireflyIII\Repositories\Budget\AvailableBudgetRepositoryInterface;
+use FireflyIII\Support\JsonApi\Enrichments\AvailableBudgetEnrichment;
 use FireflyIII\Transformers\AvailableBudgetTransformer;
 use FireflyIII\User;
 use Illuminate\Http\JsonResponse;
@@ -71,28 +72,36 @@ class ShowController extends Controller
      */
     public function index(): JsonResponse
     {
-        $manager          = $this->getManager();
+        $manager = $this->getManager();
 
         // types to get, page size:
-        $pageSize         = $this->parameters->get('limit');
-
-        $start            = $this->parameters->get('start');
-        $end              = $this->parameters->get('end');
+        $pageSize = $this->parameters->get('limit');
+        $start    = $this->parameters->get('start');
+        $end      = $this->parameters->get('end');
 
         // get list of available budgets. Count it and split it.
         $collection       = $this->abRepository->getAvailableBudgetsByDate($start, $end);
         $count            = $collection->count();
         $availableBudgets = $collection->slice(($this->parameters->get('page') - 1) * $pageSize, $pageSize);
 
+        // enrich
+        /** @var User $admin */
+        $admin      = auth()->user();
+        $enrichment = new AvailableBudgetEnrichment();
+        $enrichment->setUser($admin);
+        $enrichment->setStart($start);
+        $enrichment->setEnd($end);
+        $availableBudgets = $enrichment->enrich($availableBudgets);
+
         // make paginator:
-        $paginator        = new LengthAwarePaginator($availableBudgets, $count, $pageSize, $this->parameters->get('page'));
-        $paginator->setPath(route('api.v1.available-budgets.index').$this->buildParams());
+        $paginator = new LengthAwarePaginator($availableBudgets, $count, $pageSize, $this->parameters->get('page'));
+        $paginator->setPath(route('api.v1.available-budgets.index') . $this->buildParams());
 
         /** @var AvailableBudgetTransformer $transformer */
-        $transformer      = app(AvailableBudgetTransformer::class);
+        $transformer = app(AvailableBudgetTransformer::class);
         $transformer->setParameters($this->parameters);
 
-        $resource         = new FractalCollection($availableBudgets, $transformer, 'available_budgets');
+        $resource = new FractalCollection($availableBudgets, $transformer, 'available_budgets');
         $resource->setPaginator(new IlluminatePaginatorAdapter($paginator));
 
         return response()->json($manager->createData($resource)->toArray())->header('Content-Type', self::CONTENT_TYPE);
@@ -106,13 +115,25 @@ class ShowController extends Controller
      */
     public function show(AvailableBudget $availableBudget): JsonResponse
     {
-        $manager     = $this->getManager();
+        $manager = $this->getManager();
+        $start   = $this->parameters->get('start');
+        $end     = $this->parameters->get('end');
 
         /** @var AvailableBudgetTransformer $transformer */
         $transformer = app(AvailableBudgetTransformer::class);
         $transformer->setParameters($this->parameters);
 
-        $resource    = new Item($availableBudget, $transformer, 'available_budgets');
+        // enrich
+        /** @var User $admin */
+        $admin      = auth()->user();
+        $enrichment = new AvailableBudgetEnrichment();
+        $enrichment->setUser($admin);
+        $enrichment->setStart($start);
+        $enrichment->setEnd($end);
+        $availableBudget = $enrichment->enrichSingle($availableBudget);
+
+
+        $resource = new Item($availableBudget, $transformer, 'available_budgets');
 
         return response()->json($manager->createData($resource)->toArray())->header('Content-Type', self::CONTENT_TYPE);
     }
diff --git a/app/Repositories/Budget/OperationsRepository.php b/app/Repositories/Budget/OperationsRepository.php
index 7c8b1c5217..a2fc46ca2a 100644
--- a/app/Repositories/Budget/OperationsRepository.php
+++ b/app/Repositories/Budget/OperationsRepository.php
@@ -57,17 +57,17 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
         $total = '0';
         $count = 0;
         foreach ($budget->budgetlimits as $limit) {
-            $diff   = (int)$limit->start_date->diffInDays($limit->end_date, true);
+            $diff   = (int) $limit->start_date->diffInDays($limit->end_date, true);
             $diff   = 0 === $diff ? 1 : $diff;
             $amount = $limit->amount;
-            $perDay = bcdiv((string)$amount, (string)$diff);
+            $perDay = bcdiv((string) $amount, (string) $diff);
             $total  = bcadd($total, $perDay);
             ++$count;
             app('log')->debug(sprintf('Found %d budget limits. Per day is %s, total is %s', $count, $perDay, $total));
         }
-        $avg   = $total;
+        $avg = $total;
         if ($count > 0) {
-            $avg = bcdiv($total, (string)$count);
+            $avg = bcdiv($total, (string) $count);
         }
         app('log')->debug(sprintf('%s / %d = %s = average.', $total, $count, $avg));
 
@@ -86,21 +86,21 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
 
         // get all transactions:
         /** @var GroupCollectorInterface $collector */
-        $collector    = app(GroupCollectorInterface::class);
+        $collector = app(GroupCollectorInterface::class);
         $collector->setAccounts($accounts)->setRange($start, $end);
         $collector->setBudgets($budgets);
-        $journals     = $collector->getExtractedJournals();
+        $journals = $collector->getExtractedJournals();
 
         // loop transactions:
         /** @var array $journal */
         foreach ($journals as $journal) {
             // prep data array for currency:
-            $budgetId                     = (int)$journal['budget_id'];
-            $budgetName                   = $journal['budget_name'];
-            $currencyId                   = (int)$journal['currency_id'];
-            $key                          = sprintf('%d-%d', $budgetId, $currencyId);
+            $budgetId   = (int) $journal['budget_id'];
+            $budgetName = $journal['budget_name'];
+            $currencyId = (int) $journal['currency_id'];
+            $key        = sprintf('%d-%d', $budgetId, $currencyId);
 
-            $data[$key] ??= [
+            $data[$key]                   ??= [
                 'id'                      => $budgetId,
                 'name'                    => sprintf('%s (%s)', $budgetName, $journal['currency_name']),
                 'sum'                     => '0',
@@ -112,7 +112,7 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
                 'entries'                 => [],
             ];
             $date                         = $journal['date']->format($carbonFormat);
-            $data[$key]['entries'][$date] = bcadd($data[$key]['entries'][$date] ?? '0', (string)$journal['amount']);
+            $data[$key]['entries'][$date] = bcadd($data[$key]['entries'][$date] ?? '0', (string) $journal['amount']);
         }
 
         return $data;
@@ -126,7 +126,7 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
     public function listExpenses(Carbon $start, Carbon $end, ?Collection $accounts = null, ?Collection $budgets = null): array
     {
         /** @var GroupCollectorInterface $collector */
-        $collector             = app(GroupCollectorInterface::class);
+        $collector = app(GroupCollectorInterface::class);
         $collector->setUser($this->user)->setRange($start, $end)->setTypes([TransactionTypeEnum::WITHDRAWAL->value]);
         if ($accounts instanceof Collection && $accounts->count() > 0) {
             $collector->setAccounts($accounts);
@@ -138,8 +138,8 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
             $collector->setBudgets($this->getBudgets());
         }
         $collector->withBudgetInformation()->withAccountInformation()->withCategoryInformation();
-        $journals              = $collector->getExtractedJournals();
-        $array                 = [];
+        $journals = $collector->getExtractedJournals();
+        $array    = [];
 
         // if needs conversion to primary.
         $convertToPrimary      = Amount::convertToPrimary($this->user);
@@ -155,8 +155,8 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
         ];
 
         foreach ($journals as $journal) {
-            $amount                                                                       = app('steam')->negative($journal['amount']);
-            $journalCurrencyId                                                            = (int)$journal['currency_id'];
+            $amount            = app('steam')->negative($journal['amount']);
+            $journalCurrencyId = (int) $journal['currency_id'];
             if (false === $convertToPrimary) {
                 $currencyId            = $journalCurrencyId;
                 $currencyName          = $journal['currency_name'];
@@ -166,11 +166,11 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
             }
             if (true === $convertToPrimary && $journalCurrencyId !== $currencyId) {
                 $currencies[$journalCurrencyId] ??= TransactionCurrency::find($journalCurrencyId);
-                $amount = $converter->convert($currencies[$journalCurrencyId], $primaryCurrency, $journal['date'], $amount);
+                $amount                         = $converter->convert($currencies[$journalCurrencyId], $primaryCurrency, $journal['date'], $amount);
             }
 
-            $budgetId                                                                     = (int)$journal['budget_id'];
-            $budgetName                                                                   = (string)$journal['budget_name'];
+            $budgetId   = (int) $journal['budget_id'];
+            $budgetName = (string) $journal['budget_name'];
 
             // catch "no budget" entries.
             if (0 === $budgetId) {
@@ -178,7 +178,7 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
             }
 
             // info about the currency:
-            $array[$currencyId]                       ??= [
+            $array[$currencyId] ??= [
                 'budgets'                 => [],
                 'currency_id'             => $currencyId,
                 'currency_name'           => $currencyName,
@@ -196,7 +196,7 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
 
             // add journal to array:
             // only a subset of the fields.
-            $journalId                                                                    = (int)$journal['transaction_journal_id'];
+            $journalId                                                                    = (int) $journal['transaction_journal_id'];
             $array[$currencyId]['budgets'][$budgetId]['transaction_journals'][$journalId] = [
                 'amount'                   => $amount,
                 'destination_account_id'   => $journal['destination_account_id'],
@@ -231,7 +231,8 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
         ?Collection          $budgets = null,
         ?TransactionCurrency $currency = null,
         bool                 $convertToPrimary = false
-    ): array {
+    ): array
+    {
         Log::debug(sprintf('Start of %s(date, date, array, array, "%s", %s).', __METHOD__, $currency?->code, var_export($convertToPrimary, true)));
         // this collector excludes all transfers TO liabilities (which are also withdrawals)
         // because those expenses only become expenses once they move from the liability to the friend.
@@ -239,8 +240,8 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
 
         $repository = app(AccountRepositoryInterface::class);
         $repository->setUser($this->user);
-        $subset     = $repository->getAccountsByType(config('firefly.valid_liabilities'));
-        $selection  = new Collection();
+        $subset    = $repository->getAccountsByType(config('firefly.valid_liabilities'));
+        $selection = new Collection();
 
         /** @var Account $account */
         foreach ($subset as $account) {
@@ -250,12 +251,11 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
         }
 
         /** @var GroupCollectorInterface $collector */
-        $collector  = app(GroupCollectorInterface::class);
+        $collector = app(GroupCollectorInterface::class);
         $collector->setUser($this->user)
-            ->setRange($start, $end)
+                  ->setRange($start, $end)
             // ->excludeDestinationAccounts($selection)
-            ->setTypes([TransactionTypeEnum::WITHDRAWAL->value])
-        ;
+                  ->setTypes([TransactionTypeEnum::WITHDRAWAL->value]);
 
         if ($accounts instanceof Collection) {
             $collector->setAccounts($accounts);
@@ -270,7 +270,7 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
         if ($budgets->count() > 0) {
             $collector->setBudgets($budgets);
         }
-        $journals   = $collector->getExtractedJournals();
+        $journals = $collector->getExtractedJournals();
 
         // same but for transactions in the foreign currency:
         if ($currency instanceof TransactionCurrency) {
@@ -282,4 +282,61 @@ class OperationsRepository implements OperationsRepositoryInterface, UserGroupIn
 
         return $summarizer->groupByCurrencyId($journals, 'negative', false);
     }
+
+    public function sumCollectedExpenses(array $expenses, Carbon $start, Carbon $end, bool $convertToPrimary = false): array
+    {
+        Log::debug(sprintf('Start of %s.', __METHOD__));
+        $summarizer = new TransactionSummarizer($this->user);
+        // 2025-04-21 overrule "convertToPrimary" because in this particular view, we never want to do this.
+        $summarizer->setConvertToPrimary($convertToPrimary);
+
+        // filter $journals by range.
+        $expenses = array_filter($expenses, static function (array $expense) use ($start, $end): bool {
+            return $expense['date']->between($start, $end);
+        });
+
+        return $summarizer->groupByCurrencyId($expenses, 'negative', false);
+    }
+
+    #[\Override] public function collectExpenses(Carbon $start, Carbon $end, ?Collection $accounts = null, ?Collection $budgets = null, ?TransactionCurrency $currency = null): array
+    {
+        Log::debug(sprintf('Start of %s(date, date, array, array, "%s").', __METHOD__, $currency?->code));
+        // this collector excludes all transfers TO liabilities (which are also withdrawals)
+        // because those expenses only become expenses once they move from the liability to the friend.
+        // 2024-12-24 disable the exclusion for now.
+
+        $repository = app(AccountRepositoryInterface::class);
+        $repository->setUser($this->user);
+        $subset    = $repository->getAccountsByType(config('firefly.valid_liabilities'));
+        $selection = new Collection();
+
+        /** @var Account $account */
+        foreach ($subset as $account) {
+            if ('credit' === $repository->getMetaValue($account, 'liability_direction')) {
+                $selection->push($account);
+            }
+        }
+
+        /** @var GroupCollectorInterface $collector */
+        $collector = app(GroupCollectorInterface::class);
+        $collector->setUser($this->user)
+                  ->setRange($start, $end)
+            // ->excludeDestinationAccounts($selection)
+                  ->setTypes([TransactionTypeEnum::WITHDRAWAL->value]);
+
+        if ($accounts instanceof Collection) {
+            $collector->setAccounts($accounts);
+        }
+        if (!$budgets instanceof Collection) {
+            $budgets = $this->getBudgets();
+        }
+        if ($currency instanceof TransactionCurrency) {
+            Log::debug(sprintf('Limit to normal currency %s', $currency->code));
+            $collector->setNormalCurrency($currency);
+        }
+        if ($budgets->count() > 0) {
+            $collector->setBudgets($budgets);
+        }
+        return $collector->getExtractedJournals();
+    }
 }
diff --git a/app/Repositories/Budget/OperationsRepositoryInterface.php b/app/Repositories/Budget/OperationsRepositoryInterface.php
index 2329e4142a..487ae5a26b 100644
--- a/app/Repositories/Budget/OperationsRepositoryInterface.php
+++ b/app/Repositories/Budget/OperationsRepositoryInterface.php
@@ -24,8 +24,8 @@ declare(strict_types=1);
 
 namespace FireflyIII\Repositories\Budget;
 
-use Deprecated;
 use Carbon\Carbon;
+use Deprecated;
 use FireflyIII\Enums\UserRoleEnum;
 use FireflyIII\Models\Budget;
 use FireflyIII\Models\TransactionCurrency;
@@ -73,4 +73,8 @@ interface OperationsRepositoryInterface
         ?TransactionCurrency $currency = null,
         bool                 $convertToPrimary = false
     ): array;
+
+    public function sumCollectedExpenses(array $expenses, Carbon $start, Carbon $end, bool $convertToPrimary = false): array;
+
+    public function collectExpenses(Carbon $start, Carbon $end, ?Collection $accounts = null, ?Collection $budgets = null, ?TransactionCurrency $currency = null): array;
 }
diff --git a/app/Support/JsonApi/Enrichments/AccountEnrichment.php b/app/Support/JsonApi/Enrichments/AccountEnrichment.php
index 1c1337edfa..9336a11791 100644
--- a/app/Support/JsonApi/Enrichments/AccountEnrichment.php
+++ b/app/Support/JsonApi/Enrichments/AccountEnrichment.php
@@ -62,6 +62,9 @@ class AccountEnrichment implements EnrichmentInterface
     private UserGroup           $userGroup;
     private array               $lastActivities;
 
+    /**
+     * TODO Set primary currency using Amount::method, not through setter.
+     */
     public function __construct()
     {
         $this->accountIds      = [];
diff --git a/app/Support/JsonApi/Enrichments/AvailableBudgetEnrichment.php b/app/Support/JsonApi/Enrichments/AvailableBudgetEnrichment.php
new file mode 100644
index 0000000000..0500ad2863
--- /dev/null
+++ b/app/Support/JsonApi/Enrichments/AvailableBudgetEnrichment.php
@@ -0,0 +1,157 @@
+<?php
+/*
+ * AvailableBudgetEnrichment.php
+ * Copyright (c) 2025 james@firefly-iii.org.
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see https://www.gnu.org/licenses/.
+ */
+
+declare(strict_types=1);
+
+namespace FireflyIII\Support\JsonApi\Enrichments;
+
+use Carbon\Carbon;
+use FireflyIII\Models\AvailableBudget;
+use FireflyIII\Models\TransactionCurrency;
+use FireflyIII\Models\UserGroup;
+use FireflyIII\Repositories\Budget\BudgetRepositoryInterface;
+use FireflyIII\Repositories\Budget\NoBudgetRepositoryInterface;
+use FireflyIII\Repositories\Budget\OperationsRepositoryInterface;
+use FireflyIII\Support\Facades\Amount;
+use FireflyIII\User;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\Log;
+
+class AvailableBudgetEnrichment implements EnrichmentInterface
+{
+    private User                $user;
+    private UserGroup           $userGroup;
+    private TransactionCurrency $primaryCurrency;
+    private bool                $convertToPrimary      = false;
+    private array               $ids                   = [];
+    private Collection          $collection;
+    private array               $spentInBudgets        = [];
+    private array               $spentOutsideBudgets   = [];
+    private array               $pcSpentInBudgets      = [];
+    private array               $pcSpentOutsideBudgets = [];
+    private readonly NoBudgetRepositoryInterface   $noBudgetRepository;
+    private readonly OperationsRepositoryInterface $opsRepository;
+    private readonly BudgetRepositoryInterface     $repository;
+
+
+    private ?Carbon $start = null;
+    private ?Carbon $end   = null;
+
+    public function __construct()
+    {
+        $this->primaryCurrency  = Amount::getPrimaryCurrency();
+        $this->convertToPrimary = Amount::convertToPrimary();
+        $this->noBudgetRepository = app(NoBudgetRepositoryInterface::class);
+        $this->opsRepository      = app(OperationsRepositoryInterface::class);
+        $this->repository         = app(BudgetRepositoryInterface::class);
+    }
+
+    #[\Override] public function enrich(Collection $collection): Collection
+    {
+        $this->collection = $collection;
+        $this->collectIds();
+        $this->collectSpentInfo();
+        $this->appendCollectedData();
+
+        return $this->collection;
+    }
+
+    #[\Override] public function enrichSingle(Model | array $model): array | Model
+    {
+        Log::debug(__METHOD__);
+        $collection = new Collection([$model]);
+        $collection = $this->enrich($collection);
+
+        return $collection->first();
+    }
+
+    #[\Override] public function setUser(User $user): void
+    {
+        $this->user      = $user;
+        $this->setUserGroup($user->userGroup);
+    }
+
+    #[\Override] public function setUserGroup(UserGroup $userGroup): void
+    {
+        $this->userGroup = $userGroup;
+        $this->noBudgetRepository->setUserGroup($userGroup);
+        $this->opsRepository->setUserGroup($userGroup);
+        $this->repository->setUserGroup($userGroup);
+    }
+
+    private function collectIds(): void
+    {
+        /** @var AvailableBudget $availableBudget */
+        foreach ($this->collection as $availableBudget) {
+            $this->ids[] = (int) $availableBudget->id;
+        }
+        $this->ids = array_unique($this->ids);
+    }
+
+    public function setStart(?Carbon $start): void
+    {
+        $this->start = $start;
+    }
+
+    public function setEnd(?Carbon $end): void
+    {
+        $this->end = $end;
+    }
+
+    private function collectSpentInfo(): void {
+        $start = $this->collection->min('start_date');
+        $end   = $this->collection->max('end_date');
+        $allActive = $this->repository->getActiveBudgets();
+        $spentInBudgets = $this->opsRepository->collectExpenses($start, $end, null, $allActive, null);
+        foreach($this->collection as $availableBudget) {
+            $filteredSpentInBudgets = $this->opsRepository->sumCollectedExpenses($spentInBudgets, $availableBudget->start_date, $availableBudget->end_date, $this->convertToPrimary);
+            $id = (int) $availableBudget->id;
+            $this->spentInBudgets[$id] = array_values($filteredSpentInBudgets);
+            // filter arrays on date.
+            // send them to sumCollection thing.
+            // save.
+        }
+
+        // first collect, then filter and append.
+    }
+
+    private function appendCollectedData(): void
+    {
+        $spentInsideBudgets    = $this->spentInBudgets;
+        $spentOutsideBudgets   = $this->spentOutsideBudgets;
+        $pcSpentInBudgets      = $this->pcSpentInBudgets;
+        $pcSpentOutsideBudgets = $this->pcSpentOutsideBudgets;
+        $this->collection      = $this->collection->map(function (AvailableBudget $item) use ($spentInsideBudgets, $spentOutsideBudgets, $pcSpentInBudgets, $pcSpentOutsideBudgets) {
+            $id         = (int) $item->id;
+            $meta       = [
+                'spent_in_budgets'         => $spentInsideBudgets[$id] ?? [],
+                'spent_outside_budgets'    => $spentOutsideBudgets[$id] ?? [],
+                'pc_spent_in_budgets'      => $pcSpentInBudgets[$id] ?? [],
+                'pc_spent_outside_budgets' => $pcSpentOutsideBudgets ?? [],
+            ];
+            $item->meta = $meta;
+            return $item;
+        });
+    }
+
+
+}
diff --git a/app/Transformers/AvailableBudgetTransformer.php b/app/Transformers/AvailableBudgetTransformer.php
index cb8a52b161..648dac8d17 100644
--- a/app/Transformers/AvailableBudgetTransformer.php
+++ b/app/Transformers/AvailableBudgetTransformer.php
@@ -60,42 +60,51 @@ class AvailableBudgetTransformer extends AbstractTransformer
     public function transform(AvailableBudget $availableBudget): array
     {
         $this->repository->setUser($availableBudget->user);
-
         $currency = $availableBudget->transactionCurrency;
-        $primary  = $this->primary;
-        if (!$this->convertToPrimary) {
-            $primary = null;
+        $amount   = app('steam')->bcround($availableBudget->amount, $currency->decimal_places);
+        $pcAmount = null;
+
+        if ($this->convertToPrimary) {
+            $pcAmount = app('steam')->bcround($availableBudget->native_amount, $this->primary->decimal_places);
         }
-        $data     = [
-            'id'                              => (string)$availableBudget->id,
-            'created_at'                      => $availableBudget->created_at->toAtomString(),
-            'updated_at'                      => $availableBudget->updated_at->toAtomString(),
-            'currency_id'                     => (string)$currency->id,
-            'currency_code'                   => $currency->code,
-            'currency_symbol'                 => $currency->symbol,
-            'currency_decimal_places'         => $currency->decimal_places,
-            'primary_currency_id'             => $primary instanceof TransactionCurrency ? (string)$primary->id : null,
-            'primary_currency_code'           => $primary?->code,
-            'primary_currency_symbol'         => $primary?->symbol,
-            'primary_currency_decimal_places' => $primary?->decimal_places,
-            'amount'                          => app('steam')->bcround($availableBudget->amount, $currency->decimal_places),
-            'pc_amount'                       => $this->convertToPrimary ? app('steam')->bcround($availableBudget->native_amount, $currency->decimal_places) : null,
-            'start'                           => $availableBudget->start_date->toAtomString(),
-            'end'                             => $availableBudget->end_date->endOfDay()->toAtomString(),
-            'spent_in_budgets'                => [],
-            'spent_no_budget'                 => [],
-            'links'                           => [
+
+        $data  = [
+            'id'                      => (string) $availableBudget->id,
+            'created_at'              => $availableBudget->created_at->toAtomString(),
+            'updated_at'              => $availableBudget->updated_at->toAtomString(),
+
+            // currencies according to 6.3.0
+            'currency_id'             => (string) $currency->id,
+            'currency_code'           => $currency->code,
+            'currency_symbol'         => $currency->symbol,
+            'currency_decimal_places' => $currency->decimal_places,
+
+            'primary_currency_id'             => (string) $this->primary->id,
+            'primary_currency_code'           => $this->primary->code,
+            'primary_currency_symbol'         => $this->primary->symbol,
+            'primary_currency_decimal_places' => $this->primary->decimal_places,
+
+
+            'amount'                   => $amount,
+            'pc_amount'                => $pcAmount,
+            'start'                    => $availableBudget->start_date->toAtomString(),
+            'end'                      => $availableBudget->end_date->endOfDay()->toAtomString(),
+            'spent_in_budgets'         => $availableBudget->meta['spent_in_budgets'],
+            'pc_spent_in_budgets'      => $availableBudget->meta['pc_spent_in_budgets'],
+            'spent_outside_budgets'    => $availableBudget->meta['spent_outside_budgets'],
+            'pc_spent_outside_budgets' => $availableBudget->meta['pc_spent_outside_budgets'],
+            'links'                    => [
                 [
                     'rel' => 'self',
-                    'uri' => '/available_budgets/'.$availableBudget->id,
+                    'uri' => '/available_budgets/' . $availableBudget->id,
                 ],
             ],
         ];
-        $start    = $this->parameters->get('start');
-        $end      = $this->parameters->get('end');
+        $start = $this->parameters->get('start');
+        $end   = $this->parameters->get('end');
         if (null !== $start && null !== $end) {
-            $data['spent_in_budgets'] = $this->getSpentInBudgets();
-            $data['spent_no_budget']  = $this->spentOutsideBudgets();
+            $data['old_spent_in_budgets'] = $this->getSpentInBudgets();
+            $data['old_spent_no_budget']  = $this->spentOutsideBudgets();
         }
 
         return $data;