fix: incorrect depr schedule and posting dates on selling of existing…

… assets [v13] (#35404)

fix: calc depr amount properly on selling of existing assets and fix incorrect posting dates

erpnext/accounts/doctype/sales_invoice/sales_invoice.py

@@ -1107,7 +1107,7 @@ def make_item_gl_entries(self, gl_entries):
 
 					if self.is_return:
 						fixed_asset_gl_entries = get_gl_entries_on_asset_regain(
-							asset, item.base_net_amount, item.finance_book
+							asset, item.base_net_amount, item.finance_book, self.posting_date
 						)
 						asset.db_set("disposal_date", None)
 
@@ -1122,7 +1122,7 @@ def make_item_gl_entries(self, gl_entries):
 							asset.reload()
 
 						fixed_asset_gl_entries = get_gl_entries_on_asset_disposal(
-							asset, item.base_net_amount, item.finance_book
+							asset, item.base_net_amount, item.finance_book, self.posting_date
 						)
 						asset.db_set("disposal_date", self.posting_date)
 

erpnext/assets/doctype/asset/asset.py

@@ -345,7 +345,7 @@ def make_depreciation_schedule(self, date_of_disposal):
 
 				# if asset is being sold
 				if date_of_disposal:
-					from_date = self.get_from_date(finance_book.finance_book)
+					from_date = self.get_from_date_for_disposal(finance_book)
 					depreciation_amount, days, months = self.get_pro_rata_amt(
 						finance_book,
 						depreciation_amount,
@@ -490,16 +490,19 @@ def sort_depreciation_schedule(self):
 		for idx, s in enumerate(self.schedules, 1):
 			s.idx = idx
 
-	def get_from_date(self, finance_book):
+	def get_from_date_for_disposal(self, finance_book):
 		if not self.get("schedules"):
-			return self.available_for_use_date
+			return add_months(
+				getdate(self.available_for_use_date),
+				(self.number_of_depreciations_booked * finance_book.frequency_of_depreciation),
+			)
 
 		if len(self.finance_books) == 1:
 			return self.schedules[-1].schedule_date
 
 		from_date = ""
 		for schedule in self.get("schedules"):
-			if schedule.finance_book == finance_book:
+			if schedule.finance_book == finance_book.finance_book:
 				from_date = schedule.schedule_date
 
 		if from_date:

erpnext/assets/doctype/asset/depreciation.py

@@ -279,7 +279,7 @@ def scrap_asset(asset_name):
 	je.company = asset.company
 	je.remark = "Scrap Entry for asset {0}".format(asset_name)
 
-	for entry in get_gl_entries_on_asset_disposal(asset):
+	for entry in get_gl_entries_on_asset_disposal(asset, date):
 		entry.update({"reference_type": "Asset", "reference_name": asset_name})
 		je.append("accounts", entry)
 
@@ -403,7 +403,10 @@ def disposal_happens_in_the_future(posting_date_of_disposal):
 	return False
 
 
-def get_gl_entries_on_asset_regain(asset, selling_amount=0, finance_book=None):
+def get_gl_entries_on_asset_regain(asset, selling_amount=0, finance_book=None, date=None):
+	if not date:
+		date = getdate()
+
 	(
 		fixed_asset_account,
 		asset,
@@ -420,23 +423,30 @@ def get_gl_entries_on_asset_regain(asset, selling_amount=0, finance_book=None):
 			"debit_in_account_currency": asset.gross_purchase_amount,
 			"debit": asset.gross_purchase_amount,
 			"cost_center": depreciation_cost_center,
+			"posting_date": date,
 		},
 		{
 			"account": accumulated_depr_account,
 			"credit_in_account_currency": accumulated_depr_amount,
 			"credit": accumulated_depr_amount,
 			"cost_center": depreciation_cost_center,
+			"posting_date": date,
 		},
 	]
 
 	profit_amount = abs(flt(value_after_depreciation)) - abs(flt(selling_amount))
 	if profit_amount:
-		get_profit_gl_entries(profit_amount, gl_entries, disposal_account, depreciation_cost_center)
+		get_profit_gl_entries(
+			profit_amount, gl_entries, disposal_account, depreciation_cost_center, date
+		)
 
 	return gl_entries
 
 
-def get_gl_entries_on_asset_disposal(asset, selling_amount=0, finance_book=None):
+def get_gl_entries_on_asset_disposal(asset, selling_amount=0, finance_book=None, date=None):
+	if not date:
+		date = getdate()
+
 	(
 		fixed_asset_account,
 		asset,
@@ -453,18 +463,22 @@ def get_gl_entries_on_asset_disposal(asset, selling_amount=0, finance_book=None)
 			"credit_in_account_currency": asset.gross_purchase_amount,
 			"credit": asset.gross_purchase_amount,
 			"cost_center": depreciation_cost_center,
+			"posting_date": date,
 		},
 		{
 			"account": accumulated_depr_account,
 			"debit_in_account_currency": accumulated_depr_amount,
 			"debit": accumulated_depr_amount,
 			"cost_center": depreciation_cost_center,
+			"posting_date": date,
 		},
 	]
 
 	profit_amount = flt(selling_amount) - flt(value_after_depreciation)
 	if profit_amount:
-		get_profit_gl_entries(profit_amount, gl_entries, disposal_account, depreciation_cost_center)
+		get_profit_gl_entries(
+			profit_amount, gl_entries, disposal_account, depreciation_cost_center, date
+		)
 
 	return gl_entries
 
@@ -491,14 +505,20 @@ def get_asset_details(asset, finance_book=None):
 	)
 
 
-def get_profit_gl_entries(profit_amount, gl_entries, disposal_account, depreciation_cost_center):
+def get_profit_gl_entries(
+	profit_amount, gl_entries, disposal_account, depreciation_cost_center, date=None
+):
+	if not date:
+		date = getdate()
+
 	debit_or_credit = "debit" if profit_amount < 0 else "credit"
 	gl_entries.append(
 		{
 			"account": disposal_account,
 			"cost_center": depreciation_cost_center,
 			debit_or_credit: abs(profit_amount),
 			debit_or_credit + "_in_account_currency": abs(profit_amount),
+			"posting_date": date,
 		}
 	)
 

erpnext/assets/doctype/asset/test_asset.py

@@ -298,6 +298,79 @@ def test_gle_made_by_asset_sale(self):
 		si.cancel()
 		self.assertEqual(frappe.db.get_value("Asset", asset.name, "status"), "Partially Depreciated")
 
+	def test_gle_made_by_asset_sale_for_existing_asset(self):
+		from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+
+		asset = create_asset(
+			calculate_depreciation=1,
+			available_for_use_date="2020-04-01",
+			purchase_date="2020-04-01",
+			expected_value_after_useful_life=0,
+			total_number_of_depreciations=5,
+			number_of_depreciations_booked=2,
+			frequency_of_depreciation=12,
+			depreciation_start_date="2023-03-31",
+			opening_accumulated_depreciation=24000,
+			gross_purchase_amount=60000,
+			submit=1,
+		)
+
+		expected_depr_values = [
+			["2023-03-31", 12000, 36000],
+			["2024-03-31", 12000, 48000],
+			["2025-03-31", 12000, 60000],
+		]
+
+		for i, schedule in enumerate(asset.schedules):
+			self.assertEqual(getdate(expected_depr_values[i][0]), schedule.schedule_date)
+			self.assertEqual(expected_depr_values[i][1], schedule.depreciation_amount)
+			self.assertEqual(expected_depr_values[i][2], schedule.accumulated_depreciation_amount)
+
+		post_depreciation_entries(date="2023-03-31")
+
+		si = create_sales_invoice(
+			item_code="Macbook Pro", asset=asset.name, qty=1, rate=40000, posting_date=getdate("2023-05-23")
+		)
+		asset.load_from_db()
+
+		self.assertEqual(frappe.db.get_value("Asset", asset.name, "status"), "Sold")
+
+		expected_values = [["2023-03-31", 12000, 36000], ["2023-05-23", 1742.47, 37742.47]]
+
+		for i, schedule in enumerate(asset.schedules):
+			self.assertEqual(getdate(expected_values[i][0]), schedule.schedule_date)
+			self.assertEqual(expected_values[i][1], schedule.depreciation_amount)
+			self.assertEqual(expected_values[i][2], schedule.accumulated_depreciation_amount)
+			self.assertTrue(schedule.journal_entry)
+
+		expected_gle = (
+			(
+				"_Test Accumulated Depreciations - _TC",
+				37742.47,
+				0.0,
+			),
+			(
+				"_Test Fixed Asset - _TC",
+				0.0,
+				60000.0,
+			),
+			(
+				"_Test Gain/Loss on Asset Disposal - _TC",
+				0.0,
+				17742.47,
+			),
+			("Debtors - _TC", 40000.0, 0.0),
+		)
+
+		gle = frappe.db.sql(
+			"""select account, debit, credit from `tabGL Entry`
+			where voucher_type='Sales Invoice' and voucher_no = %s
+			order by account""",
+			si.name,
+		)
+
+		self.assertSequenceEqual(gle, expected_gle)
+
 	def test_asset_with_maintenance_required_status_after_sale(self):
 		asset = create_asset(
 			calculate_depreciation=1,