diff --git a/lang/en/reportbuilder.php b/lang/en/reportbuilder.php
index 6736edd2e7417..21424268ea5fb 100644
--- a/lang/en/reportbuilder.php
+++ b/lang/en/reportbuilder.php
@@ -120,6 +120,7 @@
 $string['errorsourceunavailable'] = 'Report source is not available';
 $string['filteradded'] = 'Added filter \'{$a}\'';
 $string['filtercontains'] = 'Contains';
+$string['filterdatebefore'] = 'Before';
 $string['filterdatecurrent'] = 'Current';
 $string['filterdatedays'] = 'day(s)';
 $string['filterdatefrom'] = 'Date from';
diff --git a/reportbuilder/classes/local/filters/date.php b/reportbuilder/classes/local/filters/date.php
index 930d1e67380ef..59a32bdedacd7 100644
--- a/reportbuilder/classes/local/filters/date.php
+++ b/reportbuilder/classes/local/filters/date.php
@@ -64,6 +64,9 @@ class date extends base {
     /** @var int Date in the future */
     public const DATE_FUTURE = 8;
 
+    /** @var int Date before [X relative date unit(s)] */
+    public const DATE_BEFORE = 9;
+
     /** @var int Relative date unit for an hour */
     public const DATE_UNIT_HOUR = 0;
 
@@ -90,6 +93,7 @@ private function get_operators(): array {
             self::DATE_NOT_EMPTY => new lang_string('filterisnotempty', 'core_reportbuilder'),
             self::DATE_EMPTY => new lang_string('filterisempty', 'core_reportbuilder'),
             self::DATE_RANGE => new lang_string('filterrange', 'core_reportbuilder'),
+            self::DATE_BEFORE => new lang_string('filterdatebefore', 'core_reportbuilder'),
             self::DATE_LAST => new lang_string('filterdatelast', 'core_reportbuilder'),
             self::DATE_CURRENT => new lang_string('filterdatecurrent', 'core_reportbuilder'),
             self::DATE_NEXT => new lang_string('filterdatenext', 'core_reportbuilder'),
@@ -195,6 +199,13 @@ public function get_sql_filter(array $values): array {
 
                 $sql = implode(' AND ', $clauses);
 
+                break;
+            case self::DATE_BEFORE:
+                $param = database::generate_param_name();
+
+                // We can use the start date of the "Last" operator as the end date here.
+                $sql = "{$fieldsql} < :{$param}";
+                $params[$param] = self::get_relative_timeframe(self::DATE_LAST, $dateunitvalue, $dateunit)[0];
                 break;
             // Relative helper method can handle these three cases.
             case self::DATE_LAST:
diff --git a/reportbuilder/tests/local/filters/date_test.php b/reportbuilder/tests/local/filters/date_test.php
index d14f4472c253f..42aff80f26f6f 100644
--- a/reportbuilder/tests/local/filters/date_test.php
+++ b/reportbuilder/tests/local/filters/date_test.php
@@ -221,6 +221,17 @@ public function test_get_sql_filter_current_week_no_match(int $startweekday, str
      */
     public function get_sql_filter_relative_provider(): array {
         return [
+            'Before hour' => [date::DATE_BEFORE, 1, date::DATE_UNIT_HOUR, '-90 minute'],
+            'Before day' => [date::DATE_BEFORE, 1, date::DATE_UNIT_DAY, '-25 hour'],
+            'Before week' => [date::DATE_BEFORE, 1, date::DATE_UNIT_WEEK, '-10 day'],
+            'Before month' => [date::DATE_BEFORE, 1, date::DATE_UNIT_MONTH, '-7 week'],
+            'Before year' => [date::DATE_BEFORE, 1, date::DATE_UNIT_YEAR, '-15 month'],
+            'Before two hours' => [date::DATE_BEFORE, 2, date::DATE_UNIT_HOUR, '-150 minute'],
+            'Before two days' => [date::DATE_BEFORE, 2, date::DATE_UNIT_DAY, '-50 hour'],
+            'Before two weeks' => [date::DATE_BEFORE, 2, date::DATE_UNIT_WEEK, '-20 day'],
+            'Before two months' => [date::DATE_BEFORE, 2, date::DATE_UNIT_MONTH, '-15 week'],
+            'Before two years' => [date::DATE_BEFORE, 2, date::DATE_UNIT_YEAR, '-30 month'],
+
             'Last hour' => [date::DATE_LAST, 1, date::DATE_UNIT_HOUR, '-30 minute'],
             'Last day' => [date::DATE_LAST, 1, date::DATE_UNIT_DAY, '-6 hour'],
             'Last week' => [date::DATE_LAST, 1, date::DATE_UNIT_WEEK, '-3 day'],