diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index e9c6c84..431eab5 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -364,7 +364,7 @@
 			diff = self.net_total_export - flt(last_tax.total / self.conversion_rate,
 				self.precision("grand_total_export"))
 
-			if diff:
+			if diff and abs(diff) <= (2.0 / 10**(self.precision("total", last_tax))):
 				last_tax.total = last_tax.total + flt(diff * self.conversion_rate, self.precision("total", last_tax))
 
 	def calculate_total_advance(self, parenttype, advance_parentfield):
diff --git a/erpnext/selling/sales_common.js b/erpnext/selling/sales_common.js
index 6fdfeae..f440315 100644
--- a/erpnext/selling/sales_common.js
+++ b/erpnext/selling/sales_common.js
@@ -471,7 +471,7 @@
 				var diff = this.frm.doc.net_total_export
 					- flt(last_tax.total / this.frm.doc.conversion_rate, precision("grand_total_export"));
 
-				if (diff) {
+				if ( diff && Math.abs(diff) <= (2.0 / Math.pow(10, precision("total", last_tax)) ) {
 					last_tax.total += flt(diff * this.frm.doc.conversion_rate, precision("total", last_tax));
 				}
 			}