diff --git a/account_move_base_import/models/account_journal.py b/account_move_base_import/models/account_journal.py
index 3572ee1b..93cffd59 100644
--- a/account_move_base_import/models/account_journal.py
+++ b/account_move_base_import/models/account_journal.py
@@ -28,7 +28,6 @@ class AccountJournal(models.Model):
         [("generic_csvxls_so", "Generic .csv/.xls based on SO Name")],
         string="Type of import",
         default="generic_csvxls_so",
-        required=True,
         help="Choose here the method by which you want to import account "
         "moves for this journal.",
     )
@@ -116,17 +115,24 @@ class AccountJournal(models.Model):
         move_line_obj = self.env["account.move.line"]
         refund = 0.0
         payment = 0.0
+        commission = 0.0
         transfer_lines = []
         for move_line in move.line_ids:
-            refund -= move_line.debit
-            payment += move_line.credit
+            if (
+                move_line.account_id == self.commission_account_id
+                and move_line.already_completed
+            ):
+                commission -= move_line.debit
+            else:
+                refund -= move_line.debit
+                payment += move_line.credit
         if self.split_counterpart:
             if refund:
                 transfer_lines.append(refund)
             if payment:
-                transfer_lines.append(payment)
+                transfer_lines.append(payment + commission)
         else:
-            total_amount = refund + payment
+            total_amount = refund + payment + commission
             if total_amount:
                 transfer_lines.append(total_amount)
         counterpart_date = parser.get_move_vals().get("date") or fields.Date.today()
@@ -156,8 +162,13 @@ class AccountJournal(models.Model):
         """
         move_line_obj = self.env["account.move.line"]
         global_commission_amount = 0
-        for row in parser.result_row_list:
-            global_commission_amount += float(row.get("commission_amount", "0.0"))
+        commmission_field = parser.commission_field
+        if commmission_field:
+            for row in parser.result_row_list:
+                global_commission_amount += float(row.get(commmission_field, "0.0"))
+            # If commission amount is positive in field, inverse the sign
+            if parser.commission_sign == "+":
+                global_commission_amount = -global_commission_amount
         partner_id = self.partner_id.id
         # Commission line
         if global_commission_amount > 0.0:
diff --git a/account_move_base_import/parser/generic_file_parser.py b/account_move_base_import/parser/generic_file_parser.py
index 00676017..e4b4bef3 100644
--- a/account_move_base_import/parser/generic_file_parser.py
+++ b/account_move_base_import/parser/generic_file_parser.py
@@ -26,6 +26,8 @@ class GenericFileParser(FileParser):
         # set self.env for later ORM searches
         self.env = journal.env
         super().__init__(journal, ftype=ftype, extra_fields=conversion_dict, **kwargs)
+        self.commission_field = "commission_amount"
+        self.commission_sign = "-"
 
     @classmethod
     def parser_for(cls, parser_name):
diff --git a/account_move_base_import/parser/parser.py b/account_move_base_import/parser/parser.py
index e88cca30..ccc1c34d 100644
--- a/account_move_base_import/parser/parser.py
+++ b/account_move_base_import/parser/parser.py
@@ -47,6 +47,8 @@ class AccountMoveImportParser(object):
         self.move_name = None
         self.move_ref = None
         self.support_multi_moves = None
+        self.commission_field = None
+        self.commission_sign = "+"
 
     @classmethod
     def parser_for(cls, parser_name):
diff --git a/account_move_base_import/wizard/import_statement.py b/account_move_base_import/wizard/import_statement.py
index ae72aee1..aefc079f 100644
--- a/account_move_base_import/wizard/import_statement.py
+++ b/account_move_base_import/wizard/import_statement.py
@@ -65,7 +65,8 @@ class CreditPartnerStatementImporter(models.TransientModel):
                 file_name=importer.file_name
             ).multi_move_import(importer.input_statement, ftype.replace(".", ""))
         action = action = self.env["ir.actions.actions"]._for_xml_id(
-            "account.action_move_journal_line")
+            "account.action_move_journal_line"
+        )
         if len(moves) > 1:
             action["domain"] = [("id", "in", moves.ids)]
         else: