diff --git a/rma_purchase/models/account_move.py b/rma_purchase/models/account_move.py
index c173139f..7884d94a 100644
--- a/rma_purchase/models/account_move.py
+++ b/rma_purchase/models/account_move.py
@@ -2,6 +2,7 @@
 # License LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl.html)
 
 from odoo import models
+from odoo.tools.float_utils import float_compare, float_is_zero
 
 
 class AccountMove(models.Model):
@@ -40,3 +41,105 @@ class AccountMove(models.Model):
                         )
                         amls.reconcile()
         return res
+
+    def _stock_account_prepare_anglo_saxon_in_lines_vals(self):
+        lines_vals_list_rma = []
+        rma_refunds = self.env["account.move"]
+        price_unit_prec = self.env["decimal.precision"].precision_get("Product Price")
+        for move in self:
+            if (
+                move.move_type != "in_refund"
+                or not move.company_id.anglo_saxon_accounting
+            ):
+                continue
+            move = move.with_company(move.company_id)
+            for line in move.invoice_line_ids.filtered(lambda l: l.rma_line_id):
+                if (
+                    line.product_id.type != "product"
+                    or line.product_id.valuation != "real_time"
+                ):
+                    continue
+                # Retrieve accounts needed to generate the price difference.
+                debit_pdiff_account = (
+                    line.product_id.property_account_creditor_price_difference
+                    or line.product_id.categ_id.property_account_creditor_price_difference_categ
+                )
+                debit_pdiff_account = move.fiscal_position_id.map_account(
+                    debit_pdiff_account
+                )
+                if not debit_pdiff_account:
+                    continue
+                rma_line = line.rma_line_id
+                valuation_price_unit = rma_line._get_price_unit()
+                price_unit = line.price_unit * (1 - (line.discount or 0.0) / 100.0)
+                price_unit_val_dif = price_unit - valuation_price_unit
+                price_subtotal = line.quantity * price_unit_val_dif
+                if (
+                    not move.currency_id.is_zero(price_subtotal)
+                    and not float_is_zero(
+                        price_unit_val_dif, precision_digits=price_unit_prec
+                    )
+                    and float_compare(
+                        line["price_unit"],
+                        line.price_unit,
+                        precision_digits=price_unit_prec,
+                    )
+                    == 0
+                ):
+                    # Add price difference account line.
+                    vals = {
+                        "name": line.name[:64],
+                        "move_id": move.id,
+                        "partner_id": line.partner_id.id
+                        or move.commercial_partner_id.id,
+                        "currency_id": line.currency_id.id,
+                        "product_id": line.product_id.id,
+                        "product_uom_id": line.product_uom_id.id,
+                        "quantity": line.quantity,
+                        "price_unit": price_unit_val_dif,
+                        "price_subtotal": line.quantity * price_unit_val_dif,
+                        "account_id": debit_pdiff_account.id,
+                        "analytic_account_id": line.analytic_account_id.id,
+                        "analytic_tag_ids": [(6, 0, line.analytic_tag_ids.ids)],
+                        "exclude_from_invoice_tab": True,
+                        "is_anglo_saxon_line": True,
+                        "rma_line_id": line.rma_line_id.id,
+                    }
+                    vals.update(
+                        line._get_fields_onchange_subtotal(
+                            price_subtotal=vals["price_subtotal"]
+                        )
+                    )
+                    lines_vals_list_rma.append(vals)
+
+                    # Correct the amount of the current line.
+                    vals = {
+                        "name": line.name[:64],
+                        "move_id": move.id,
+                        "partner_id": line.partner_id.id
+                        or move.commercial_partner_id.id,
+                        "currency_id": line.currency_id.id,
+                        "product_id": line.product_id.id,
+                        "product_uom_id": line.product_uom_id.id,
+                        "quantity": line.quantity,
+                        "price_unit": -price_unit_val_dif,
+                        "price_subtotal": line.quantity * -price_unit_val_dif,
+                        "account_id": line.account_id.id,
+                        "analytic_account_id": line.analytic_account_id.id,
+                        "analytic_tag_ids": [(6, 0, line.analytic_tag_ids.ids)],
+                        "exclude_from_invoice_tab": True,
+                        "is_anglo_saxon_line": True,
+                        "rma_line_id": line.rma_line_id.id,
+                    }
+                    vals.update(
+                        line._get_fields_onchange_subtotal(
+                            price_subtotal=vals["price_subtotal"]
+                        )
+                    )
+                    lines_vals_list_rma.append(vals)
+                    rma_refunds |= move
+        lines_vals_list = super(
+            AccountMove, self - rma_refunds
+        )._stock_account_prepare_anglo_saxon_in_lines_vals()
+        lines_vals_list += lines_vals_list_rma
+        return lines_vals_list