diff --git a/app/Helpers/Report/ReportQuery.php b/app/Helpers/Report/ReportQuery.php
deleted file mode 100644
index 365c66e171..0000000000
--- a/app/Helpers/Report/ReportQuery.php
+++ /dev/null
@@ -1,109 +0,0 @@
-<?php
-declare(strict_types = 1);
-
-namespace FireflyIII\Helpers\Report;
-
-use Auth;
-use Carbon\Carbon;
-use DB;
-use FireflyIII\Models\TransactionType;
-use Illuminate\Database\Query\JoinClause;
-use Illuminate\Support\Collection;
-
-/**
- * Class ReportQuery
- *
- * @package FireflyIII\Helpers\Report
- */
-class ReportQuery implements ReportQueryInterface
-{
-
-    /**
-     * Returns an array of the amount of money spent in the given accounts (on withdrawals, opening balances and transfers)
-     * grouped by month like so: "2015-01" => '123.45'
-     *
-     * @param Collection $accounts
-     * @param Carbon     $start
-     * @param Carbon     $end
-     *
-     * @return array
-     */
-    public function earnedPerMonth(Collection $accounts, Carbon $start, Carbon $end): array
-    {
-        $ids   = $accounts->pluck('id')->toArray();
-        $query = Auth::user()->transactionjournals()
-                     ->leftJoin(
-                         'transactions AS t_from', function (JoinClause $join) {
-                         $join->on('transaction_journals.id', '=', 't_from.transaction_journal_id')->where('t_from.amount', '<', 0);
-                     }
-                     )
-                     ->leftJoin(
-                         'transactions AS t_to', function (JoinClause $join) {
-                         $join->on('transaction_journals.id', '=', 't_to.transaction_journal_id')->where('t_to.amount', '>', 0);
-                     }
-                     )
-                     ->whereIn('t_to.account_id', $ids)
-                     ->whereNotIn('t_from.account_id', $ids)
-                     ->after($start)
-                     ->before($end)
-                     ->transactionTypes([TransactionType::DEPOSIT, TransactionType::TRANSFER, TransactionType::OPENING_BALANCE])
-                     ->groupBy('dateFormatted')
-                     ->get(
-                         [
-                             DB::raw('DATE_FORMAT(`transaction_journals`.`date`,"%Y-%m") AS `dateFormatted`'),
-                             DB::raw('SUM(`t_to`.`amount`) AS `sum`'),
-                         ]
-                     );
-        $array = [];
-        foreach ($query as $result) {
-            $array[$result->dateFormatted] = $result->sum;
-        }
-
-        return $array;
-    }
-
-    /**
-     * Returns an array of the amount of money spent in the given accounts (on withdrawals, opening balances and transfers)
-     * grouped by month like so: "2015-01" => '123.45'
-     *
-     * @param Collection $accounts
-     * @param Carbon     $start
-     * @param Carbon     $end
-     *
-     * @return array
-     */
-    public function spentPerMonth(Collection $accounts, Carbon $start, Carbon $end): array
-    {
-        $ids   = $accounts->pluck('id')->toArray();
-        $query = Auth::user()->transactionjournals()
-                     ->leftJoin(
-                         'transactions AS t_from', function (JoinClause $join) {
-                         $join->on('transaction_journals.id', '=', 't_from.transaction_journal_id')->where('t_from.amount', '<', 0);
-                     }
-                     )
-                     ->leftJoin(
-                         'transactions AS t_to', function (JoinClause $join) {
-                         $join->on('transaction_journals.id', '=', 't_to.transaction_journal_id')->where('t_to.amount', '>', 0);
-                     }
-                     )
-                     ->whereIn('t_from.account_id', $ids)
-                     ->whereNotIn('t_to.account_id', $ids)
-                     ->after($start)
-                     ->before($end)
-                     ->transactionTypes([TransactionType::WITHDRAWAL, TransactionType::TRANSFER, TransactionType::OPENING_BALANCE])
-                     ->groupBy('dateFormatted')
-                     ->get(
-                         [
-                             DB::raw('DATE_FORMAT(`transaction_journals`.`date`,"%Y-%m") AS `dateFormatted`'),
-                             DB::raw('SUM(`t_from`.`amount`) AS `sum`'),
-                         ]
-                     );
-        $array = [];
-        foreach ($query as $result) {
-            $array[$result->dateFormatted] = $result->sum;
-        }
-
-        return $array;
-
-    }
-}
diff --git a/app/Helpers/Report/ReportQueryInterface.php b/app/Helpers/Report/ReportQueryInterface.php
deleted file mode 100644
index 4dba7f3d5d..0000000000
--- a/app/Helpers/Report/ReportQueryInterface.php
+++ /dev/null
@@ -1,42 +0,0 @@
-<?php
-declare(strict_types = 1);
-
-namespace FireflyIII\Helpers\Report;
-
-use Carbon\Carbon;
-use Illuminate\Support\Collection;
-
-/**
- * Interface ReportQueryInterface
- *
- * @package FireflyIII\Helpers\Report
- */
-interface ReportQueryInterface
-{
-
-    /**
-     * Returns an array of the amount of money spent in the given accounts (on withdrawals, opening balances and transfers)
-     * grouped by month like so: "2015-01" => '123.45'
-     *
-     * @param Collection $accounts
-     * @param Carbon     $start
-     * @param Carbon     $end
-     *
-     * @return array
-     */
-    public function earnedPerMonth(Collection $accounts, Carbon $start, Carbon $end): array;
-
-    /**
-     * Returns an array of the amount of money spent in the given accounts (on withdrawals, opening balances and transfers)
-     * grouped by month like so: "2015-01" => '123.45'
-     *
-     * @param Collection $accounts
-     * @param Carbon     $start
-     * @param Carbon     $end
-     *
-     * @return array
-     */
-    public function spentPerMonth(Collection $accounts, Carbon $start, Carbon $end): array;
-
-
-}