diff --git a/CRM/Contribute/BAO/Contribution.php b/CRM/Contribute/BAO/Contribution.php
index f535d6487d89..2f8338320603 100644
--- a/CRM/Contribute/BAO/Contribution.php
+++ b/CRM/Contribute/BAO/Contribution.php
@@ -2442,7 +2442,7 @@ protected static function repeatTransaction(&$contribution, $input, $contributio
       else {
         $contributionParams['financial_type_id'] = $templateContribution['financial_type_id'];
       }
-      foreach (['contact_id', 'currency', 'source', 'amount_level', 'address_id', 'on_behalf', 'source_contact_id'] as $fieldName) {
+      foreach (['contact_id', 'currency', 'source', 'amount_level', 'address_id', 'on_behalf', 'source_contact_id', 'tax_amount'] as $fieldName) {
         if (isset($templateContribution[$fieldName])) {
           $contributionParams[$fieldName] = $templateContribution[$fieldName];
         }
@@ -2465,9 +2465,6 @@ protected static function repeatTransaction(&$contribution, $input, $contributio
       if (isset($contribution->contribution_page_id) && is_numeric($contribution->contribution_page_id)) {
         $contributionParams['contribution_page_id'] = $contribution->contribution_page_id;
       }
-      if (!empty($contribution->tax_amount)) {
-        $contributionParams['tax_amount'] = $contribution->tax_amount;
-      }
 
       $createContribution = civicrm_api3('Contribution', 'create', $contributionParams);
       $contribution->id = $createContribution['id'];
diff --git a/tests/phpunit/api/v3/ContributionTest.php b/tests/phpunit/api/v3/ContributionTest.php
index 22da640db652..c8886af5b381 100644
--- a/tests/phpunit/api/v3/ContributionTest.php
+++ b/tests/phpunit/api/v3/ContributionTest.php
@@ -4721,8 +4721,10 @@ public function testContributionGetUnique() {
   /**
    * Test Repeat Transaction Contribution with Tax amount.
    * https://lab.civicrm.org/dev/core/issues/806
+   *
+   * @throws \CRM_Core_Exception
    */
-  public function testRepeatContributionWithTaxAmount() {
+  public function testRepeatContributionWithTaxAmount(): void {
     $this->enableTaxAndInvoicing();
     $financialType = $this->callAPISuccess('financial_type', 'create', [
       'name' => 'Test taxable financial Type',
@@ -4740,7 +4742,7 @@ public function testRepeatContributionWithTaxAmount() {
     $this->callAPISuccess('contribution', 'repeattransaction', [
       'original_contribution_id' => $contribution['id'],
       'contribution_status_id' => 'Completed',
-      'trxn_id' => uniqid(),
+      'trxn_id' => 'test',
     ]);
     $payments = $this->callAPISuccess('Contribution', 'get', ['sequential' => 1])['values'];
     //Assert if first payment and repeated payment has the same contribution amount.