diff --git a/l10n_br_account/tests/test_account_move_lc.py b/l10n_br_account/tests/test_account_move_lc.py
index ef008c7efb60..a959e9b573c0 100644
--- a/l10n_br_account/tests/test_account_move_lc.py
+++ b/l10n_br_account/tests/test_account_move_lc.py
@@ -675,6 +675,90 @@ def test_venda_with_icms_reduction_with_relief(self):
             move_vals,
         )
 
+    def test_venda_additional_values_included(self):
+        """Tests the inclusion of additional values in IPI tax base and price."""
+        fopl_id = self.env.ref("l10n_br_fiscal.fo_venda_venda")
+
+        # Setup invoice
+        additional_values_invoice = self.init_invoice(
+            "out_invoice",
+            products=[self.product_a],
+            document_type=self.env.ref("l10n_br_fiscal.document_55"),
+            document_serie_id=self.empresa_lc_document_55_serie_1,
+            fiscal_operation=self.env.ref("l10n_br_fiscal.fo_venda"),
+            fiscal_operation_lines=[fopl_id],
+        )
+
+        additional_values_invoice.invoice_line_ids[0].freight_value = 100
+        additional_values_invoice.invoice_line_ids[0].insurance_value = 100
+        additional_values_invoice.invoice_line_ids[0].other_value = 100
+
+        additional_values_invoice.invoice_line_ids._onchange_fiscal_taxes()
+        additional_values_invoice.line_ids._compute_amounts()
+        additional_values_invoice.invoice_line_ids.with_context(
+            check_move_validity=False
+        )._onchange_price_subtotal()
+        additional_values_invoice.with_context(
+            check_move_validity=False
+        )._recompute_dynamic_lines(recompute_all_taxes=True)
+        additional_values_invoice.line_ids._onchange_price_subtotal()
+        additional_values_invoice._check_balanced()
+
+        # Expected inclusive value calculation
+        price_unit = additional_values_invoice.invoice_line_ids[0].price_unit
+        ipi_mult = (
+            additional_values_invoice.invoice_line_ids[0].ipi_tax_id.percent_amount
+            / 100
+        )
+        additional_value = 300
+        expected = (1 + ipi_mult) * (price_unit + additional_value)
+
+        self.assertEqual(additional_values_invoice.amount_total, expected)
+
+    def test_venda_additional_values_force_excluded(self):
+        """Tests forced exclusion of additional values in IPI tax base."""
+        fopl_id = self.env.ref("l10n_br_fiscal.fo_venda_venda")
+        fopl_id.additional_values_definition = "do_not_add"
+
+        # Setup invoice
+        additional_values_invoice = self.init_invoice(
+            "out_invoice",
+            products=[self.product_a],
+            document_type=self.env.ref("l10n_br_fiscal.document_55"),
+            document_serie_id=self.empresa_lc_document_55_serie_1,
+            fiscal_operation=self.env.ref("l10n_br_fiscal.fo_venda"),
+            fiscal_operation_lines=[fopl_id],
+        )
+
+        additional_values_invoice.invoice_line_ids[0].freight_value = 100
+        additional_values_invoice.invoice_line_ids[0].insurance_value = 100
+        additional_values_invoice.invoice_line_ids[0].other_value = 100
+
+        additional_values_invoice.invoice_line_ids._onchange_fiscal_taxes()
+        additional_values_invoice.line_ids._compute_amounts()
+        additional_values_invoice.invoice_line_ids.with_context(
+            check_move_validity=False
+        )._onchange_price_subtotal()
+        additional_values_invoice.with_context(
+            check_move_validity=False
+        )._recompute_dynamic_lines(recompute_all_taxes=True)
+        additional_values_invoice.line_ids._onchange_price_subtotal()
+        additional_values_invoice._check_balanced()
+
+        # Expected non-inclusive value calculation
+        price_unit = additional_values_invoice.invoice_line_ids[0].price_unit
+        ipi_mult = (
+            additional_values_invoice.invoice_line_ids[0].ipi_tax_id.percent_amount
+            / 100
+        )
+        additional_value = 300
+        expected = (1 + ipi_mult) * price_unit + additional_value
+
+        self.assertEqual(additional_values_invoice.amount_total, expected)
+
+        # Reset FOPL additional values config
+        fopl_id.additional_values_definition = "tax"
+
     def test_simples_remessa(self):
         product_line_vals_1 = {
             "name": self.product_a.display_name,