diff --git a/osi_downpayment_taxes/README.rst b/osi_downpayment_taxes/README.rst
new file mode 100644
index 00000000..aed1aa97
--- /dev/null
+++ b/osi_downpayment_taxes/README.rst
@@ -0,0 +1,23 @@
+.. image:: https://img.shields.io/badge/licence-AGPL--3-blue.svg
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+
+========
+Overview
+========
+
+* Correct rounding issues on taxes calculated on down payments
+
+
+=======
+Credits
+=======
+
+* Open Source Integrators <http://www.opensourceintegrators.com>
+
+
+Contributors
+------------
+
+* Tirth Patel <tpatel@opensourceintegrators.com>
+* Raphael Lee <rlee@opensourceintegrators.com>
diff --git a/osi_downpayment_taxes/__manifest__.py b/osi_downpayment_taxes/__manifest__.py
index 2604c436..34f9c39e 100644
--- a/osi_downpayment_taxes/__manifest__.py
+++ b/osi_downpayment_taxes/__manifest__.py
@@ -1,16 +1,18 @@
-{ 
+{
     "name": "Sales Downpayment Tax Fixes",
     "summary": "Extends Sales Downpayments to fix sales lines made for multiple tax rates",
     "version": "17.0.1.0.0",
+    "license": "LGPL-3",
     "author": "Open Source Integrators",
+    "maintainer": "Open Source Integrators",
+    "website": "https://github.com/ursais/osi-addons",
     "category": "Accounting",
     "depends": [
-        'account_accountant',
-        'sale',
-    ],
-    "data": [
+        "account_accountant",
+        "sale",
     ],
+    "data": [],
     "application": False,
     "installable": True,
-    "auto_install": False
+    "auto_install": False,
 }
diff --git a/osi_downpayment_taxes/wizards/sale_make_invoice_advance.py b/osi_downpayment_taxes/wizards/sale_make_invoice_advance.py
index f1798ea4..329cd15e 100644
--- a/osi_downpayment_taxes/wizards/sale_make_invoice_advance.py
+++ b/osi_downpayment_taxes/wizards/sale_make_invoice_advance.py
@@ -1,50 +1,60 @@
-from odoo import models, api, fields, _
-from odoo.tools import frozendict
-
-class SaleAdvancePaymentInv(models.TransientModel):
-    _inherit = 'sale.advance.payment.inv'
+from odoo import models
 
 
+class SaleAdvancePaymentInv(models.TransientModel):
+    _inherit = "sale.advance.payment.inv"
 
     def _prepare_down_payment_lines_values(self, order):
-        """ Modify the original method to remove tax based down payment lines values
+        """Modify the original method to remove tax based down payment lines values
         this means we always create only one DownPayment SO Line.
         """
         self.ensure_one()
 
-        if self.advance_payment_method == 'percentage':
+        if self.advance_payment_method == "percentage":
             percentage = self.amount / 100
         else:
-            percentage = self.fixed_amount / order.amount_total if order.amount_total else 1
-
-        # Remove SO Lines that aare already linked with previous DownPayment Lines, and DP lines too.
-        base_downpayment_lines_values = self._prepare_base_downpayment_line_values(order)
-
-        order_lines = order.order_line.filtered(lambda sol: not sol.display_type and not sol.is_downpayment)
-
-        # We are skiping The tax calculation for the order_lines and splitting DP lines by Tax
-        # We are also ignoring any tax present on the DP Product itself, maybe revisit this if needed.
-        # This ensures the amount in DP is correctly reflected from the SO Lines for which DP is created.
+            percentage = (
+                self.fixed_amount / order.amount_total if order.amount_total else 1
+            )
+
+        # Remove SO Lines that aare already linked with previous DownPayment Lines,
+        # and DP lines too.
+        base_downpayment_lines_values = self._prepare_base_downpayment_line_values(
+            order
+        )
+
+        order_lines = order.order_line.filtered(
+            lambda sol: not sol.display_type and not sol.is_downpayment
+        )
+
+        # We are skipping the tax calculation for the order_lines and splitting DP lines
+        # by Tax. We are also ignoring any tax present on the DP Product itself,
+        # maybe revisit this if needed. This ensures the amount in DP is correctly
+        # reflected from the SO Lines for which DP is created.
         # Using price_total which includes price+tax-disc
         order_amount_incl_tax = 0.0
         for order_line in order_lines:
-            # The Delivery Product somehow has taxed amount in its price_total even when there is no tax applied.
+            # The Delivery Product somehow has taxed amount in its price_total
+            # even when there is no tax applied.
             if order_line.is_delivery and not order_line.tax_id:
                 order_amount_incl_tax += order_line.price_subtotal
             else:
                 order_amount_incl_tax += order_line.price_total
         # order_amount_incl_tax = sum(order_lines.mapped('price_total'))
 
-
         analytic_distribution_order_lines = {}
         for sol in order_lines.filtered(lambda ol: ol.analytic_distribution):
             analytic_distribution_order_lines.update(sol.analytic_distribution)
-        base_downpayment_lines_values.update({
-            'price_unit': order.currency_id.round(order_amount_incl_tax * percentage),
-            'product_uom_qty': 0.0,
-            'discount': 0.0,
-            'analytic_distribution': analytic_distribution_order_lines,
-        })
+        base_downpayment_lines_values.update(
+            {
+                "price_unit": order.currency_id.round(
+                    order_amount_incl_tax * percentage
+                ),
+                "product_uom_qty": 0.0,
+                "discount": 0.0,
+                "analytic_distribution": analytic_distribution_order_lines,
+            }
+        )
 
         # We skip the logic to split the lines based on taxes present on SO lines.