diff --git a/account_statement_import_sheet_file/models/account_statement_import_sheet_mapping.py b/account_statement_import_sheet_file/models/account_statement_import_sheet_mapping.py
index fd43a9ed..5782f784 100644
--- a/account_statement_import_sheet_file/models/account_statement_import_sheet_mapping.py
+++ b/account_statement_import_sheet_file/models/account_statement_import_sheet_mapping.py
@@ -79,6 +79,13 @@ class AccountStatementImportSheetMapping(models.Model):
         string="Credit amount column",
         help="Credit amount of transaction in journal's currency",
     )
+    amount_inverse_sign = fields.Boolean(
+        string="Inverse sign of amount",
+        help="In some cases such as in credit card statements the "
+        "amounts are expressed in the inverse sign. "
+        "By setting this flag during the upload the amounts "
+        "will be inverted in sign.",
+    )
     balance_column = fields.Char(
         help="Balance after transaction in journal's currency",
     )
diff --git a/account_statement_import_sheet_file/models/account_statement_import_sheet_parser.py b/account_statement_import_sheet_file/models/account_statement_import_sheet_parser.py
index c652e010..cfe9069e 100644
--- a/account_statement_import_sheet_file/models/account_statement_import_sheet_parser.py
+++ b/account_statement_import_sheet_file/models/account_statement_import_sheet_parser.py
@@ -4,6 +4,7 @@
 
 import itertools
 import logging
+from collections.abc import Iterable
 from datetime import datetime
 from decimal import Decimal
 from io import StringIO
@@ -97,7 +98,11 @@ class AccountStatementImportSheetParser(models.TransientModel):
 
     def _get_column_indexes(self, header, column_name, mapping):
         column_indexes = []
-        if mapping[column_name] and "," in mapping[column_name]:
+        if (
+            mapping[column_name]
+            and isinstance(mapping[column_name], Iterable)
+            and "," in mapping[column_name]
+        ):
             # We have to concatenate the values
             column_names_or_indexes = mapping[column_name].split(",")
         else:
@@ -319,7 +324,6 @@ class AccountStatementImportSheetParser(models.TransientModel):
                 if columns["bank_account_column"]
                 else None
             )
-
             if currency != currency_code:
                 continue
 
@@ -342,7 +346,10 @@ class AccountStatementImportSheetParser(models.TransientModel):
                 ).copy_sign(amount)
             else:
                 original_amount = 0.0
-
+            if mapping.amount_inverse_sign:
+                amount = -amount
+                original_amount = -original_amount
+                balance = -balance if balance is not None else balance
             line = {
                 "timestamp": timestamp,
                 "amount": amount,
diff --git a/account_statement_import_sheet_file/tests/fixtures/sample_statement_credit_card_inverse_sign_en.csv b/account_statement_import_sheet_file/tests/fixtures/sample_statement_credit_card_inverse_sign_en.csv
new file mode 100644
index 00000000..282e5f9a
--- /dev/null
+++ b/account_statement_import_sheet_file/tests/fixtures/sample_statement_credit_card_inverse_sign_en.csv
@@ -0,0 +1,3 @@
+"Date","Label","Currency","Amount","Amount Currency","Partner Name","Bank Account"
+"12/15/2018","LABEL 1","USD","33.50","0.0","John Doe","123456789"
+"12/15/2018","LABEL 2","EUR","-1,525.00","-1,000.00","Azure Interior",""
diff --git a/account_statement_import_sheet_file/tests/test_account_statement_import_sheet_file.py b/account_statement_import_sheet_file/tests/test_account_statement_import_sheet_file.py
index 13b1fb82..08caf065 100644
--- a/account_statement_import_sheet_file/tests/test_account_statement_import_sheet_file.py
+++ b/account_statement_import_sheet_file/tests/test_account_statement_import_sheet_file.py
@@ -506,3 +506,35 @@ class TestAccountStatementImportSheetFile(common.TransactionCase):
         line4 = statement.line_ids.filtered(lambda x: x.payment_ref == "LABEL 4")
         self.assertEqual(line1.amount, 50)
         self.assertEqual(line4.amount, -1300)
+
+    def test_amount_inverse_sign(self):
+        self.sample_statement_map.amount_inverse_sign = True
+        journal = self.AccountJournal.create(
+            {
+                "name": "Bank",
+                "type": "bank",
+                "code": "BANK",
+                "currency_id": self.currency_usd.id,
+                "suspense_account_id": self.suspense_account.id,
+            }
+        )
+        filename = "fixtures/sample_statement_credit_card_inverse_sign_en.csv"
+        data = self._data_file(filename, "utf-8")
+        wizard = self.AccountStatementImport.with_context(journal_id=journal.id).create(
+            {
+                "statement_filename": filename,
+                "statement_file": data,
+                "sheet_mapping_id": self.sample_statement_map.id,
+            }
+        )
+        wizard.with_context(
+            account_statement_import_sheet_file_test=True
+        ).import_file_button()
+        statement = self.AccountBankStatement.search([("journal_id", "=", journal.id)])
+        self.assertEqual(len(statement), 1)
+        self.assertEqual(len(statement.line_ids), 2)
+        line1 = statement.line_ids.filtered(lambda x: x.payment_ref == "LABEL 1")
+        self.assertEqual(line1.amount, -33.50)
+        line2 = statement.line_ids.filtered(lambda x: x.payment_ref == "LABEL 2")
+        self.assertEqual(line2.amount, 1525.00)
+        self.assertEqual(line2.amount_currency, 1000.00)
diff --git a/account_statement_import_sheet_file/views/account_statement_import_sheet_mapping.xml b/account_statement_import_sheet_file/views/account_statement_import_sheet_mapping.xml
index 3165de06..49f34bc9 100644
--- a/account_statement_import_sheet_file/views/account_statement_import_sheet_mapping.xml
+++ b/account_statement_import_sheet_file/views/account_statement_import_sheet_mapping.xml
@@ -89,6 +89,7 @@
                                 'invisible': [('amount_type', '=', 'distinct_credit_debit')],
                                 }"
                             />
+
                             <field
                                 name="amount_debit_column"
                                 attrs="{
@@ -103,6 +104,7 @@
                                     'invisible': [('amount_type', '!=', 'distinct_credit_debit')],
                                     }"
                             />
+                            <field name="amount_inverse_sign" />
                             <field name="balance_column" />
                             <field name="original_currency_column" />
                             <field name="original_amount_column" />