diff --git a/erpnext/public/js/controllers/taxes_and_totals.js b/erpnext/public/js/controllers/taxes_and_totals.js
index 702064f..b5a6d8f 100644
--- a/erpnext/public/js/controllers/taxes_and_totals.js
+++ b/erpnext/public/js/controllers/taxes_and_totals.js
@@ -137,7 +137,9 @@
 		var me = this;
 
 		$.each(this.frm.doc["taxes"] || [], function(i, tax) {
-			tax.item_wise_tax_detail = {};
+			if (!tax.dont_recompute_tax) {
+				tax.item_wise_tax_detail = {};
+			}
 			var tax_fields = ["total", "tax_amount_after_discount_amount",
 				"tax_amount_for_current_item", "grand_total_for_current_item",
 				"tax_fraction_for_current_item", "grand_total_fraction_for_current_item"];
@@ -421,7 +423,9 @@
 			current_tax_amount = tax_rate * item.qty;
 		}
 
-		this.set_item_wise_tax(item, tax, tax_rate, current_tax_amount);
+		if (!tax.dont_recompute_tax) {
+			this.set_item_wise_tax(item, tax, tax_rate, current_tax_amount);
+		}
 
 		return current_tax_amount;
 	}
@@ -589,7 +593,9 @@
 					delete tax[fieldname];
 				});
 
-				tax.item_wise_tax_detail = JSON.stringify(tax.item_wise_tax_detail);
+				if (!tax.dont_recompute_tax) {
+					tax.item_wise_tax_detail = JSON.stringify(tax.item_wise_tax_detail);
+				}
 			});
 		}
 	}