diff --git a/addons/at_accounting/__init__.py b/addons/at_accounting/__init__.py
new file mode 100644
index 0000000..e50ab2e
--- /dev/null
+++ b/addons/at_accounting/__init__.py
@@ -0,0 +1,105 @@
+from . import models
+from . import wizard
+from . import controllers
+
+from odoo import Command
+
+import logging
+
+_logger = logging.getLogger(__name__)
+
+
+def _at_accounting_post_init(env):
+    country_code = env.company.country_id.code
+    if country_code:
+        module_list = []
+
+        sepa_zone = env.ref('base.sepa_zone', raise_if_not_found=False)
+        sepa_zone_country_codes = sepa_zone and sepa_zone.mapped('country_ids.code') or []
+
+        if country_code in sepa_zone_country_codes:
+            module_list.extend(['account_iso20022', 'account_bank_statement_import_camt'])
+
+        module_ids = env['ir.module.module'].search([('name', 'in', module_list), ('state', '=', 'uninstalled')])
+        if module_ids:
+            module_ids.sudo().button_install()
+
+    for company in env['res.company'].search([('chart_template', '!=', False)], order="parent_path"):
+        ChartTemplate = env['account.chart.template'].with_company(company)
+        ChartTemplate._load_data({
+            'res.company': ChartTemplate._get_account_accountant_res_company(company.chart_template),
+        })
+
+    country_code = env.company.country_id.code
+    if country_code:
+        module_list = []
+
+        if country_code in ('AU', 'CA', 'US'):
+            module_list.append('account_reports_cash_basis')
+
+        module_ids = env['ir.module.module'].search([('name', 'in', module_list), ('state', '=', 'uninstalled')])
+        if module_ids:
+            module_ids.sudo().button_install()
+
+    for company in env['res.company'].search([]):
+        company.account_tax_periodicity_journal_id = company._get_default_misc_journal()
+        company.account_tax_periodicity_journal_id.show_on_dashboard = True
+        company._initiate_account_onboardings()
+
+
+def uninstall_hook(env):
+    group_basic = env.ref('account.group_account_basic')
+    group_manager = env.ref('account.group_account_manager')
+    if group_basic:
+        group_basic.write({
+            'users': [Command.clear()],
+            'category_id': env.ref("base.module_category_hidden").id,
+        })
+        group_manager.write({
+            'implied_ids': [Command.unlink(group_basic.id)],
+        })
+
+
+    try:
+        group_user = env.ref("account.group_account_user")
+        group_user.write({
+            'name': "Show Full Accounting Features",
+            'implied_ids': [(3, env.ref('account.group_account_invoice').id)],
+            'category_id': env.ref("base.module_category_hidden").id,
+        })
+        group_readonly = env.ref("account.group_account_readonly")
+        group_readonly.write({
+            'name': "Show Full Accounting Features - Readonly",
+            'category_id': env.ref("base.module_category_hidden").id,
+        })
+    except ValueError as e:
+        _logger.warning(e)
+
+    try:
+        group_manager = env.ref("account.group_account_manager")
+        group_manager.write({'name': "Billing Manager",
+                             'implied_ids': [(4, env.ref("account.group_account_invoice").id),
+                                             (3, env.ref("account.group_account_readonly").id),
+                                             (3, env.ref("account.group_account_user").id)]})
+    except ValueError as e:
+        _logger.warning(e)
+
+    # make the account_accountant features disappear (magic)
+    env.ref("account.group_account_user").write({'users': [(5, False, False)]})
+    env.ref("account.group_account_readonly").write({'users': [(5, False, False)]})
+
+
+    invoicing_menu = env.ref("account.menu_finance")
+    menus_to_move = [
+        "account.menu_finance_receivables",
+        "account.menu_finance_payables",
+        "account.menu_finance_entries",
+        "account.menu_finance_reports",
+        "account.menu_finance_configuration",
+        "account.menu_board_journal_1",
+    ]
+    for menu_xmlids in menus_to_move:
+        try:
+            env.ref(menu_xmlids).parent_id = invoicing_menu
+        except ValueError as e:
+            _logger.warning(e)