diff --git a/erpnext/controllers/taxes_and_totals.py b/erpnext/controllers/taxes_and_totals.py
index fc0ba56d1f4..bf5beab1a82 100644
--- a/erpnext/controllers/taxes_and_totals.py
+++ b/erpnext/controllers/taxes_and_totals.py
@@ -8,6 +8,7 @@ import frappe
 from frappe import _, scrub
 from frappe.model.document import Document
 from frappe.utils import cint, flt, round_based_on_smallest_currency_fraction
+from frappe.utils.deprecations import deprecated
 
 import erpnext
 from erpnext.accounts.doctype.journal_entry.journal_entry import get_exchange_rate
@@ -74,7 +75,7 @@ class calculate_taxes_and_totals:
 		self.calculate_net_total()
 		self.calculate_tax_withholding_net_total()
 		self.calculate_taxes()
-		self.manipulate_grand_total_for_inclusive_tax()
+		self.adjust_grand_total_for_inclusive_tax()
 		self.calculate_totals()
 		self._cleanup()
 		self.calculate_total_net_weight()
@@ -286,7 +287,7 @@ class calculate_taxes_and_totals:
 			):
 				amount = flt(item.amount) - total_inclusive_tax_amount_per_qty
 
-				item.net_amount = flt(amount / (1 + cumulated_tax_fraction))
+				item.net_amount = flt(amount / (1 + cumulated_tax_fraction), item.precision("net_amount"))
 				item.net_rate = flt(item.net_amount / item.qty, item.precision("net_rate"))
 				item.discount_percentage = flt(
 					item.discount_percentage, item.precision("discount_percentage")
@@ -531,7 +532,12 @@ class calculate_taxes_and_totals:
 			tax.base_tax_amount = round(tax.base_tax_amount, 0)
 			tax.base_tax_amount_after_discount_amount = round(tax.base_tax_amount_after_discount_amount, 0)
 
+	@deprecated
 	def manipulate_grand_total_for_inclusive_tax(self):
+		# for backward compatablility - if in case used by an external application
+		return self.adjust_grand_total_for_inclusive_tax()
+
+	def adjust_grand_total_for_inclusive_tax(self):
 		# if fully inclusive taxes and diff
 		if self.doc.get("taxes") and any(cint(t.included_in_print_rate) for t in self.doc.get("taxes")):
 			last_tax = self.doc.get("taxes")[-1]
@@ -553,17 +559,21 @@ class calculate_taxes_and_totals:
 			diff = flt(diff, self.doc.precision("rounding_adjustment"))
 
 			if diff and abs(diff) <= (5.0 / 10 ** last_tax.precision("tax_amount")):
-				self.doc.rounding_adjustment = diff
+				self.doc.grand_total_diff = diff
+			else:
+				self.doc.grand_total_diff = 0
 
 	def calculate_totals(self):
 		if self.doc.get("taxes"):
-			self.doc.grand_total = flt(self.doc.get("taxes")[-1].total) + flt(self.doc.rounding_adjustment)
+			self.doc.grand_total = flt(self.doc.get("taxes")[-1].total) + flt(
+				self.doc.get("grand_total_diff")
+			)
 		else:
 			self.doc.grand_total = flt(self.doc.net_total)
 
 		if self.doc.get("taxes"):
 			self.doc.total_taxes_and_charges = flt(
-				self.doc.grand_total - self.doc.net_total - flt(self.doc.rounding_adjustment),
+				self.doc.grand_total - self.doc.net_total - flt(self.doc.get("grand_total_diff")),
 				self.doc.precision("total_taxes_and_charges"),
 			)
 		else:
@@ -626,8 +636,8 @@ class calculate_taxes_and_totals:
 				self.doc.grand_total, self.doc.currency, self.doc.precision("rounded_total")
 			)
 
-			# if print_in_rate is set, we would have already calculated rounding adjustment
-			self.doc.rounding_adjustment += flt(
+			# rounding adjustment should always be the difference vetween grand and rounded total
+			self.doc.rounding_adjustment = flt(
 				self.doc.rounded_total - self.doc.grand_total, self.doc.precision("rounding_adjustment")
 			)
 
diff --git a/erpnext/public/js/controllers/accounts.js b/erpnext/public/js/controllers/accounts.js
index c39fb524264..c7b08f1dc15 100644
--- a/erpnext/public/js/controllers/accounts.js
+++ b/erpnext/public/js/controllers/accounts.js
@@ -160,7 +160,7 @@ erpnext.accounts.taxes = {
 				let tax = frappe.get_doc(cdt, cdn);
 				try {
 					me.validate_taxes_and_charges(cdt, cdn);
-					me.validate_inclusive_tax(tax);
+					me.validate_inclusive_tax(tax, frm);
 				} catch(e) {
 					tax.included_in_print_rate = 0;
 					refresh_field("included_in_print_rate", tax.name, tax.parentfield);
@@ -170,7 +170,8 @@ erpnext.accounts.taxes = {
 		});
 	},
 
-	validate_inclusive_tax: function(tax) {
+	validate_inclusive_tax: function(tax, frm) {
+		this.frm = this.frm || frm;
 		let actual_type_error = function() {
 			var msg = __("Actual type tax cannot be included in Item rate in row {0}", [tax.idx])
 			frappe.throw(msg);
@@ -186,12 +187,12 @@ erpnext.accounts.taxes = {
 			if(tax.charge_type == "Actual") {
 				// inclusive tax cannot be of type Actual
 				actual_type_error();
-			} else if(tax.charge_type == "On Previous Row Amount" &&
+			} else if(tax.charge_type == "On Previous Row Amount" && this.frm &&
 				!cint(this.frm.doc["taxes"][tax.row_id - 1].included_in_print_rate)
 			) {
 				// referred row should also be an inclusive tax
 				on_previous_row_error(tax.row_id);
-			} else if(tax.charge_type == "On Previous Row Total") {
+			} else if(tax.charge_type == "On Previous Row Total" && this.frm) {
 				var taxes_not_included = $.map(this.frm.doc["taxes"].slice(0, tax.row_id),
 					function(t) { return cint(t.included_in_print_rate) ? null : t; });
 				if(taxes_not_included.length > 0) {
diff --git a/erpnext/public/js/controllers/taxes_and_totals.js b/erpnext/public/js/controllers/taxes_and_totals.js
index dc7a5a8eef1..8b2d7943772 100644
--- a/erpnext/public/js/controllers/taxes_and_totals.js
+++ b/erpnext/public/js/controllers/taxes_and_totals.js
@@ -103,7 +103,7 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
 		this.determine_exclusive_rate();
 		this.calculate_net_total();
 		this.calculate_taxes();
-		this.manipulate_grand_total_for_inclusive_tax();
+		this.adjust_grand_total_for_inclusive_tax();
 		this.calculate_totals();
 		this._cleanup();
 	}
@@ -185,7 +185,7 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
 
 			if (!this.discount_amount_applied) {
 				erpnext.accounts.taxes.validate_taxes_and_charges(tax.doctype, tax.name);
-				erpnext.accounts.taxes.validate_inclusive_tax(tax);
+				erpnext.accounts.taxes.validate_inclusive_tax(tax, this.frm);
 			}
 			frappe.model.round_floats_in(tax);
 		});
@@ -250,7 +250,7 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
 
 			if(!me.discount_amount_applied && item.qty && (total_inclusive_tax_amount_per_qty || cumulated_tax_fraction)) {
 				var amount = flt(item.amount) - total_inclusive_tax_amount_per_qty;
-				item.net_amount = flt(amount / (1 + cumulated_tax_fraction));
+				item.net_amount = flt(amount / (1 + cumulated_tax_fraction), precision("net_amount", item));
 				item.net_rate = item.qty ? flt(item.net_amount / item.qty, precision("net_rate", item)) : 0;
 
 				me.set_in_company_currency(item, ["net_rate", "net_amount"]);
@@ -305,6 +305,8 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
 			me.frm.doc.net_total += item.net_amount;
 			me.frm.doc.base_net_total += item.base_net_amount;
 		});
+
+		frappe.model.round_floats_in(this.frm.doc, ["total", "base_total", "net_total", "base_net_total"]);
 	}
 
 	calculate_shipping_charges() {
@@ -523,7 +525,15 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
 		}
 	}
 
+	/**
+	* @deprecated Use adjust_grand_total_for_inclusive_tax instead.
+	*/
 	manipulate_grand_total_for_inclusive_tax() {
+		// for backward compatablility - if in case used by an external application
+		this.adjust_grand_total_for_inclusive_tax()
+	}
+
+	adjust_grand_total_for_inclusive_tax() {
 		var me = this;
 		// if fully inclusive taxes and diff
 		if (this.frm.doc["taxes"] && this.frm.doc["taxes"].length) {
@@ -550,7 +560,9 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
 				diff = flt(diff, precision("rounding_adjustment"));
 
 				if ( diff && Math.abs(diff) <= (5.0 / Math.pow(10, precision("tax_amount", last_tax))) ) {
-					me.frm.doc.rounding_adjustment = diff;
+					me.frm.doc.grand_total_diff = diff;
+				} else {
+					me.frm.doc.grand_total_diff = 0;
 				}
 			}
 		}
@@ -561,7 +573,7 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
 		var me = this;
 		var tax_count = this.frm.doc["taxes"] ? this.frm.doc["taxes"].length : 0;
 		this.frm.doc.grand_total = flt(tax_count
-			? this.frm.doc["taxes"][tax_count - 1].total + flt(this.frm.doc.rounding_adjustment)
+			? this.frm.doc["taxes"][tax_count - 1].total + flt(this.frm.doc.grand_total_diff)
 			: this.frm.doc.net_total);
 
 		if(["Quotation", "Sales Order", "Delivery Note", "Sales Invoice", "POS Invoice"].includes(this.frm.doc.doctype)) {
@@ -621,7 +633,7 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
 		if(frappe.meta.get_docfield(this.frm.doc.doctype, "rounded_total", this.frm.doc.name)) {
 			this.frm.doc.rounded_total = round_based_on_smallest_currency_fraction(this.frm.doc.grand_total,
 				this.frm.doc.currency, precision("rounded_total"));
-			this.frm.doc.rounding_adjustment += flt(this.frm.doc.rounded_total - this.frm.doc.grand_total,
+			this.frm.doc.rounding_adjustment = flt(this.frm.doc.rounded_total - this.frm.doc.grand_total,
 				precision("rounding_adjustment"));
 
 			this.set_in_company_currency(this.frm.doc, ["rounding_adjustment", "rounded_total"]);
@@ -689,8 +701,7 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
 			if (total_for_discount_amount) {
 				$.each(this.frm._items || [], function(i, item) {
 					distributed_amount = flt(me.frm.doc.discount_amount) * item.net_amount / total_for_discount_amount;
-					item.net_amount = flt(item.net_amount - distributed_amount,
-						precision("base_amount", item));
+					item.net_amount = flt(item.net_amount - distributed_amount, precision("net_amount", item));
 					net_total += item.net_amount;
 
 					// discount amount rounding loss adjustment if no taxes