diff --git a/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py b/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py
index e8b19b40249..9da89ff2c9f 100644
--- a/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py
+++ b/erpnext/accounts/report/item_wise_sales_register/item_wise_sales_register.py
@@ -17,7 +17,7 @@ def _execute(filters=None, additional_table_columns=None, additional_query_colum
 	filters.update({"from_date": filters.get("date_range") and filters.get("date_range")[0], "to_date": filters.get("date_range") and filters.get("date_range")[1]})
 	columns = get_columns(additional_table_columns)
 
-	company_currency = erpnext.get_company_currency(filters.get('company'))
+	company_currency = frappe.get_cached_value('Company',  filters.get("company"),  "default_currency")
 
 	item_list = get_items(filters, additional_query_columns)
 	if item_list:
diff --git a/erpnext/accounts/report/sales_register/sales_register.py b/erpnext/accounts/report/sales_register/sales_register.py
index d08056f6f9b..2b32fa93785 100644
--- a/erpnext/accounts/report/sales_register/sales_register.py
+++ b/erpnext/accounts/report/sales_register/sales_register.py
@@ -68,7 +68,8 @@ def _execute(filters, additional_table_columns=None, additional_query_columns=No
 		total_tax = 0
 		for tax_acc in tax_accounts:
 			if tax_acc not in income_accounts:
-				tax_amount = flt(invoice_tax_map.get(inv.name, {}).get(tax_acc))
+				tax_amount_precision = get_field_precision(frappe.get_meta("Sales Taxes and Charges").get_field("tax_amount"), currency=company_currency) or 2
+				tax_amount = flt(invoice_tax_map.get(inv.name, {}).get(tax_acc), tax_amount_precision)
 				total_tax += tax_amount
 				row.append(tax_amount)