diff --git a/addons/at_accounting/models/res_currency.py b/addons/at_accounting/models/res_currency.py
new file mode 100644
index 0000000..b0ed726
--- /dev/null
+++ b/addons/at_accounting/models/res_currency.py
@@ -0,0 +1,27 @@
+from odoo import models
+
+
+class ResCurrency(models.Model):
+    _inherit = 'res.currency'
+
+    def _get_currency_table_fiscal_year_bounds(self, main_company):
+        # EXTENDS account
+        default_bounds = super()._get_currency_table_fiscal_year_bounds(main_company)
+        manual_fiscal_years = self.env['account.fiscal.year'].search(self.env['account.fiscal.year']._check_company_domain(main_company), order='date_from ASC')
+
+        manual_bounds = manual_fiscal_years.mapped(lambda x: (x.date_from, x.date_to))
+        rslt = []
+        for default_from, default_to in default_bounds:
+            while (
+                manual_bounds
+                and (
+                    not default_to
+                    or (default_from and default_from <= manual_bounds[0][0] and default_to >= manual_bounds[0][0])
+                    or default_to >= manual_bounds[0][1]
+                )):
+                rslt.append(manual_bounds.pop(0))
+
+            if not rslt or rslt[-1][1] < default_from:
+                rslt.append((default_from, default_to))
+
+        return rslt