diff --git a/erpnext/accounts/report/accounts_payable/test_accounts_payable.py b/erpnext/accounts/report/accounts_payable/test_accounts_payable.py
index 25f4b51c738..ee296447c0e 100644
--- a/erpnext/accounts/report/accounts_payable/test_accounts_payable.py
+++ b/erpnext/accounts/report/accounts_payable/test_accounts_payable.py
@@ -139,3 +139,27 @@ class TestAccountsPayable(ERPNextTestSuite, AccountsTestMixin):
 		row = report[0]
 		self.assertEqual(row.project, project.name)
 		self.assertEqual(row.invoiced, 300.0)
+
+	def test_project_on_report_output(self):
+		"""
+		Report row must carry the invoice's project.
+		"""
+		filters = {
+			"company": self.company,
+			"report_date": today(),
+			"range": "30, 60, 90, 120",
+		}
+
+		project = frappe.get_doc(
+			{"doctype": "Project", "project_name": "_Test AP Project Output", "company": self.company}
+		).insert()
+
+		pi = self.create_purchase_invoice(do_not_submit=True)
+		pi.project = project.name
+		pi.save().submit()
+
+		report = execute(filters)
+
+		self.assertEqual(len(report[1]), 1)
+		row = report[1][0]
+		self.assertEqual([pi.name, project.name, 300], [row.voucher_no, row.project, row.outstanding])
diff --git a/erpnext/accounts/report/accounts_receivable/test_accounts_receivable.py b/erpnext/accounts/report/accounts_receivable/test_accounts_receivable.py
index 68a350bf28c..9c5b6899455 100644
--- a/erpnext/accounts/report/accounts_receivable/test_accounts_receivable.py
+++ b/erpnext/accounts/report/accounts_receivable/test_accounts_receivable.py
@@ -1216,3 +1216,30 @@ class TestAccountsReceivable(ERPNextTestSuite, AccountsTestMixin):
 		row = report[0]
 		self.assertEqual(row.project, project.name)
 		self.assertEqual(row.invoiced, 100.0)
+
+	def test_project_on_report_output(self):
+		"""
+		Report row must carry the invoice's project even when the payment entry
+		has no project set.
+		"""
+		filters = {
+			"company": self.company,
+			"report_date": today(),
+			"range": "30, 60, 90, 120",
+		}
+
+		project = frappe.get_doc(
+			{"doctype": "Project", "project_name": "_Test AR Project Output", "company": self.company}
+		).insert()
+
+		si = self.create_sales_invoice(no_payment_schedule=True, do_not_submit=True)
+		si.project = project.name
+		si.save().submit()
+
+		# payment has no project — report row must still show the invoice's project
+		self.create_payment_entry(si.name)
+		report = execute(filters)
+
+		self.assertEqual(len(report[1]), 1)
+		row = report[1][0]
+		self.assertEqual([si.name, project.name, 60], [row.voucher_no, row.project, row.outstanding])