diff --git a/partner_statement/__manifest__.py b/partner_statement/__manifest__.py
index d9ea94bd6319..d58321e2d865 100644
--- a/partner_statement/__manifest__.py
+++ b/partner_statement/__manifest__.py
@@ -7,6 +7,7 @@
     "category": "Accounting & Finance",
     "summary": "OCA Financial Reports",
     "author": "ForgeFlow, Odoo Community Association (OCA)",
+    "maintainers": ["MiquelRForgeFlow"],
     "website": "https://github.com/OCA/account-financial-reporting",
     "license": "AGPL-3",
     "depends": ["account", "report_xlsx", "report_xlsx_helper"],
diff --git a/partner_statement/report/activity_statement.py b/partner_statement/report/activity_statement.py
index a6be08bc17ac..ad0a5d80b48e 100644
--- a/partner_statement/report/activity_statement.py
+++ b/partner_statement/report/activity_statement.py
@@ -17,37 +17,95 @@ def _initial_balance_sql_q1(self, partners, date_start, account_type):
         return str(
             self._cr.mogrify(
                 """
-            SELECT l.partner_id, l.currency_id, l.company_id,
-            CASE WHEN l.currency_id is not null AND l.amount_currency > 0.0
-                THEN sum(l.amount_currency)
-                ELSE sum(l.debit)
-            END as debit,
-            CASE WHEN l.currency_id is not null AND l.amount_currency < 0.0
-                THEN sum(-l.amount_currency)
-                ELSE sum(l.credit)
-            END as credit
-            FROM account_move_line l
-            JOIN account_move m ON (l.move_id = m.id)
+            SELECT l.partner_id, l.currency_id, l.company_id, l.id,
+                (abs(COALESCE(l.balance, 0.0)) + sum(
+                    coalesce(pr.pr_sign, 0.0) * coalesce(pr.amount, 0.0))
+                ) * sign(COALESCE(l.balance, 0.0)) AS open_amount,
+                (abs(COALESCE(l.amount_currency, 0.0)) + sum(
+                    coalesce(pr.pr_sign, 0.0) * CASE
+                        WHEN pr.currency_id IS NOT NULL AND pr.currency_id = l.currency_id
+                        THEN coalesce(pr.amount_currency, 0.0)
+                        WHEN cur.id IS NOT NULL AND ROUND(
+                            abs(COALESCE(l.balance, 0.0)), cur.decimal_places) > 0.0
+                        THEN ROUND(coalesce(pr.amount, 0.0) *
+                                COALESCE(l.amount_currency, 0.0) / NULLIF(l.balance, 0.0),
+                            cur.decimal_places)
+                        ELSE ROUND(coalesce(pr.amount, 0.0) *
+                            COALESCE((
+                                SELECT r.rate FROM res_currency_rate r
+                                JOIN account_move_line aml
+                                    ON pr.credit_move_id = aml.id
+                                WHERE r.currency_id = l.currency_id
+                                    AND r.name <= aml.date
+                                    AND (r.company_id IS NULL
+                                        OR r.company_id = l.company_id)
+                                ORDER BY r.company_id, r.name DESC LIMIT 1), 1.0),
+                            cur.decimal_places)
+                        END)
+                ) * sign(COALESCE(l.amount_currency, 0.0)) AS open_amount_currency
+            FROM (
+                SELECT l.*, CASE
+                    WHEN l.debit = 0.0 AND l.credit = 0.0 AND l.currency_id IS NOT NULL
+                        AND ROUND(COALESCE(l.amount_currency, 0.0),
+                            cur.decimal_places) > 0.0 THEN 1
+                    WHEN l.debit = 0.0 AND l.credit = 0.0 AND l.currency_id IS NOT NULL
+                        AND ROUND(COALESCE(l.amount_currency, 0.0),
+                            cur.decimal_places) < 0.0 THEN -1
+                    WHEN l.balance > 0.0 THEN 1 ELSE -1 END as sign
+                FROM account_move_line l
+                LEFT JOIN res_currency cur ON cur.id = l.currency_id
+                ) l
+            JOIN account_move m ON l.move_id = m.id
+            LEFT JOIN res_currency cur ON cur.id = l.currency_id
+            LEFT JOIN LATERAL (SELECT pr.*,
+                CASE WHEN pr.credit_move_id = l.id THEN l.sign
+                    ELSE -l.sign END AS pr_sign
+                FROM account_partial_reconcile pr
+                WHERE pr.max_date < %(date_start)s AND (
+                    (pr.debit_move_id = l.id) OR (pr.credit_move_id = l.id))
+            ) as pr ON TRUE
             WHERE l.partner_id IN %(partners)s
                 AND l.account_internal_type = %(account_type)s
-                AND l.date < %(date_start)s AND not l.blocked
+                AND (
+                  (pr.id IS NOT NULL AND pr.max_date < %(date_start)s) OR
+                  (pr.id IS NULL)
+                ) AND l.date < %(date_start)s AND not l.blocked
                 AND m.state IN ('posted')
-            GROUP BY l.partner_id, l.currency_id, l.amount_currency, l.company_id
+            GROUP BY l.partner_id, l.currency_id, l.company_id,
+                l.balance, l.amount_currency, l.id
         """,
                 locals(),
             ),
             "utf-8",
         )
 
-    def _initial_balance_sql_q2(self, company_id):
+    def _initial_balance_sql_q2(self):
         return str(
             self._cr.mogrify(
                 """
-            SELECT Q1.partner_id, debit-credit AS balance,
-            COALESCE(Q1.currency_id, c.currency_id) AS currency_id
+            SELECT Q1.partner_id, Q1.currency_id,
+                sum(CASE WHEN Q1.currency_id is not null
+                    THEN Q1.open_amount_currency
+                    ELSE Q1.open_amount
+                END) as balance, Q1.company_id
             FROM Q1
-            JOIN res_company c ON (c.id = Q1.company_id)
-            WHERE c.id = %(company_id)s
+            GROUP BY Q1.partner_id, Q1.currency_id, Q1.company_id""",
+                locals(),
+            ),
+            "utf-8",
+        )
+
+    def _initial_balance_sql_q3(self, company_id):
+        return str(
+            self._cr.mogrify(
+                """
+            SELECT Q2.partner_id, Q2.balance,
+            COALESCE(Q2.currency_id, c.currency_id) AS currency_id
+            FROM Q2
+            JOIN res_company c ON (c.id = Q2.company_id)
+            JOIN res_currency cur ON cur.id = COALESCE(Q2.currency_id, c.currency_id)
+            WHERE c.id = %(company_id)s AND
+                round(Q2.balance, cur.decimal_places) != 0.0
         """,
                 locals(),
             ),
@@ -61,12 +119,16 @@ def _get_account_initial_balance(
         partners = tuple(partner_ids)
         # pylint: disable=E8103
         self.env.cr.execute(
-            """WITH Q1 AS (%s), Q2 AS (%s)
-        SELECT partner_id, currency_id, balance
-        FROM Q2"""
+            """WITH Q1 AS (%s),
+                    Q2 AS (%s),
+                    Q3 AS (%s)
+        SELECT partner_id, currency_id, sum(balance) as balance
+        FROM Q2
+        GROUP BY partner_id, currency_id"""
             % (
                 self._initial_balance_sql_q1(partners, date_start, account_type),
-                self._initial_balance_sql_q2(company_id),
+                self._initial_balance_sql_q2(),
+                self._initial_balance_sql_q3(company_id),
             )
         )
         for row in self.env.cr.dictfetchall():
@@ -78,6 +140,7 @@ def _display_lines_sql_q1(self, partners, date_start, date_end, account_type):
             self._cr.mogrify(
                 """
             SELECT m.name AS move_id, l.partner_id, l.date,
+                array_agg(l.id ORDER BY l.id) as ids,
                 CASE WHEN (aj.type IN ('sale', 'purchase'))
                     THEN l.name
                     ELSE '/'
@@ -90,16 +153,16 @@ def _display_lines_sql_q1(self, partners, date_start, date_end, account_type):
                     WHEN (aj.type in ('bank', 'cash'))
                         THEN 'Payment'
                     ELSE ''
-                END as ref,
+                END as case_ref,
                 l.blocked, l.currency_id, l.company_id,
-                CASE WHEN (l.currency_id is not null AND l.amount_currency > 0.0)
-                    THEN sum(l.amount_currency)
-                    ELSE sum(l.debit)
-                END as debit,
-                CASE WHEN (l.currency_id is not null AND l.amount_currency < 0.0)
-                    THEN sum(l.amount_currency * (-1))
-                    ELSE sum(l.credit)
-                END as credit,
+                sum(CASE WHEN (l.currency_id is not null AND l.amount_currency > 0.0)
+                    THEN l.amount_currency
+                    ELSE l.debit
+                END) as debit,
+                sum(CASE WHEN (l.currency_id is not null AND l.amount_currency < 0.0)
+                    THEN l.amount_currency * (-1)
+                    ELSE l.credit
+                END) as credit,
                 CASE WHEN l.date_maturity is null
                     THEN l.date
                     ELSE l.date_maturity
@@ -112,21 +175,8 @@ def _display_lines_sql_q1(self, partners, date_start, date_end, account_type):
                 AND %(date_start)s <= l.date
                 AND l.date <= %(date_end)s
                 AND m.state IN ('posted')
-            GROUP BY l.partner_id, m.name, l.date, l.date_maturity,
-                CASE WHEN (aj.type IN ('sale', 'purchase'))
-                    THEN l.name
-                    ELSE '/'
-                END,
-                CASE
-                    WHEN (aj.type IN ('sale', 'purchase')) AND l.name IS NOT NULL
-                        THEN l.ref
-                    WHEN aj.type IN ('sale', 'purchase') AND l.name IS NULL
-                        THEN m.ref
-                    WHEN (aj.type in ('bank', 'cash'))
-                        THEN 'Payment'
-                    ELSE ''
-                END,
-                l.blocked, l.currency_id, l.amount_currency, l.company_id
+            GROUP BY l.partner_id, m.name, l.date, l.date_maturity, l.name,
+                aj.type, case_ref, l.blocked, l.currency_id, l.company_id
         """,
                 locals(),
             ),
@@ -138,7 +188,7 @@ def _display_lines_sql_q2(self, company_id):
             self._cr.mogrify(
                 """
             SELECT Q1.partner_id, Q1.move_id, Q1.date, Q1.date_maturity,
-                Q1.name, Q1.ref, Q1.debit, Q1.credit,
+                Q1.name, Q1.case_ref as ref, Q1.debit, Q1.credit, Q1.ids,
                 Q1.debit-Q1.credit as amount, Q1.blocked,
                 COALESCE(Q1.currency_id, c.currency_id) AS currency_id
             FROM Q1
@@ -161,8 +211,9 @@ def _get_account_display_lines(
             """
         WITH Q1 AS (%s),
              Q2 AS (%s)
-        SELECT partner_id, move_id, date, date_maturity, name, ref, debit,
-                            credit, amount, blocked, currency_id
+        SELECT partner_id, move_id, date, date_maturity, ids,
+            COALESCE(name, '') as name, COALESCE(ref, '') as ref,
+            debit, credit, amount, blocked, currency_id
         FROM Q2
         ORDER BY date, date_maturity, move_id"""
             % (
diff --git a/partner_statement/report/activity_statement_xlsx.py b/partner_statement/report/activity_statement_xlsx.py
index 71c0626cd60b..221a7cc11f7d 100644
--- a/partner_statement/report/activity_statement_xlsx.py
+++ b/partner_statement/report/activity_statement_xlsx.py
@@ -2,7 +2,7 @@
 # Copyright 2021 ForgeFlow S.L.
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
-from odoo import _, fields, models
+from odoo import _, models
 
 
 class ActivityStatementXslx(models.AbstractModel):
@@ -34,7 +34,7 @@ def _write_currency_lines(self, row_pos, sheet, partner, currency, data):
             )
         )
         sheet.merge_range(
-            row_pos, 0, row_pos, 6, statement_header, self.format_right_bold
+            row_pos, 0, row_pos, 6, statement_header, self.format_left_bold
         )
         row_pos += 1
         sheet.write(
@@ -44,10 +44,12 @@ def _write_currency_lines(self, row_pos, sheet, partner, currency, data):
         sheet.merge_range(
             row_pos, 2, row_pos, 4, _("Description"), self.format_theader_yellow_center
         )
-        sheet.write(row_pos, 5, _("Open Amount"), self.format_theader_yellow_center)
+        sheet.write(row_pos, 5, _("Original Amount"), self.format_theader_yellow_center)
         sheet.write(row_pos, 6, _("Balance"), self.format_theader_yellow_center)
         row_pos += 1
-        sheet.write(row_pos, 1, partner_data.get("start"), self.format_tcell_date_left)
+        sheet.write(
+            row_pos, 1, partner_data.get("prior_day"), self.format_tcell_date_left
+        )
         sheet.merge_range(
             row_pos, 2, row_pos, 4, _("Balance Forward"), self.format_tcell_left
         )
@@ -59,7 +61,7 @@ def _write_currency_lines(self, row_pos, sheet, partner, currency, data):
             name_to_show = (
                 line.get("name", "") == "/" or not line.get("name", "")
             ) and line.get("ref", "")
-            if line.get("name", "") != "/":
+            if line.get("name", "") and line.get("name", "") != "/":
                 if not line.get("ref", ""):
                     name_to_show = line.get("name", "")
                 else:
@@ -166,7 +168,7 @@ def generate_xlsx_report(self, workbook, data, objects):
         sheet.write(
             row_pos,
             2,
-            fields.Date.from_string(data.get("date_end")),
+            data.get("data", {}).get(partners.ids[0], {}).get("today"),
             self.format_date_left,
         )
         self._size_columns(sheet)
diff --git a/partner_statement/report/outstanding_statement.py b/partner_statement/report/outstanding_statement.py
index 7f4063406079..4514afa89f13 100644
--- a/partner_statement/report/outstanding_statement.py
+++ b/partner_statement/report/outstanding_statement.py
@@ -102,7 +102,7 @@ def _display_lines_sql_q2(self):
                 CASE WHEN Q1.currency_id is not null
                     THEN Q1.open_amount_currency
                     ELSE Q1.open_amount
-                END as open_amount
+                END as open_amount, Q1.id
                 FROM Q1
                 """,
                 locals(),
@@ -118,7 +118,7 @@ def _display_lines_sql_q3(self, company_id):
               Q2.name, Q2.ref, Q2.debit, Q2.credit,
               Q2.debit-Q2.credit AS amount, blocked,
               COALESCE(Q2.currency_id, c.currency_id) AS currency_id,
-              Q2.open_amount
+              Q2.open_amount, Q2.id
             FROM Q2
             JOIN res_company c ON (c.id = Q2.company_id)
             JOIN res_currency cur ON cur.id = COALESCE(Q2.currency_id, c.currency_id)
@@ -142,7 +142,8 @@ def _get_account_display_lines(
              Q2 AS (%s),
              Q3 AS (%s)
         SELECT partner_id, currency_id, move_id, date, date_maturity, debit,
-                            credit, amount, open_amount, name, ref, blocked
+            credit, amount, open_amount, COALESCE(name, '') as name,
+            COALESCE(ref, '') as ref, blocked, id
         FROM Q3
         ORDER BY date, date_maturity, move_id"""
             % (
diff --git a/partner_statement/report/outstanting_statement_xlsx.py b/partner_statement/report/outstanting_statement_xlsx.py
index e0b96a6c2025..23f047663959 100644
--- a/partner_statement/report/outstanting_statement_xlsx.py
+++ b/partner_statement/report/outstanting_statement_xlsx.py
@@ -2,7 +2,7 @@
 # Copyright 2021 ForgeFlow S.L.
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
-from odoo import _, fields, models
+from odoo import _, models
 
 
 class OutstandingStatementXslx(models.AbstractModel):
@@ -33,7 +33,7 @@ def _write_currency_lines(self, row_pos, sheet, partner, currency, data):
             )
         )
         sheet.merge_range(
-            row_pos, 0, row_pos, 6, statement_header, self.format_right_bold
+            row_pos, 0, row_pos, 6, statement_header, self.format_left_bold
         )
         row_pos += 1
         sheet.write(
@@ -50,7 +50,7 @@ def _write_currency_lines(self, row_pos, sheet, partner, currency, data):
             name_to_show = (
                 line.get("name", "") == "/" or not line.get("name", "")
             ) and line.get("ref", "")
-            if line.get("name", "") != "/":
+            if line.get("name", "") and line.get("name", "") != "/":
                 if not line.get("ref", ""):
                     name_to_show = line.get("name", "")
                 else:
@@ -161,7 +161,7 @@ def generate_xlsx_report(self, workbook, data, objects):
         sheet.write(
             row_pos,
             2,
-            fields.Date.from_string(data.get("date_end")),
+            data.get("data", {}).get(partners.ids[0], {}).get("today"),
             self.format_date_left,
         )
         self._size_columns(sheet)
diff --git a/partner_statement/report/report_statement_common.py b/partner_statement/report/report_statement_common.py
index fbada72af709..0f090ef58eb7 100644
--- a/partner_statement/report/report_statement_common.py
+++ b/partner_statement/report/report_statement_common.py
@@ -360,6 +360,7 @@ def _get_report_values(self, docids, data=None):
 
         res = {}
         # get base data
+        prior_day = date_start - timedelta(days=1) if date_start else None
         lines = self._get_account_display_lines(
             company_id, partner_ids, date_start, date_end, account_type
         )
@@ -375,7 +376,7 @@ def _get_report_values(self, docids, data=None):
         else:
             bucket_labels = {}
 
-        # organise and format for report
+        # organize and format for report
         format_date = self._format_date_to_partner_lang
         partners_to_remove = set()
         for partner_id in partner_ids:
@@ -385,6 +386,9 @@ def _get_report_values(self, docids, data=None):
                     date_start, date_formats.get(partner_id, default_fmt)
                 ),
                 "end": format_date(date_end, date_formats.get(partner_id, default_fmt)),
+                "prior_day": format_date(
+                    prior_day, date_formats.get(partner_id, default_fmt)
+                ),
                 "currencies": {},
             }
             currency_dict = res[partner_id]["currencies"]
diff --git a/partner_statement/views/activity_statement.xml b/partner_statement/views/activity_statement.xml
index 67b9d4cabcbb..35af895055e1 100644
--- a/partner_statement/views/activity_statement.xml
+++ b/partner_statement/views/activity_statement.xml
@@ -50,7 +50,7 @@
                                     <th>Reference number</th>
                                     <th>Date</th>
                                     <th>Description</th>
-                                    <th class="amount">Amount</th>
+                                    <th class="amount">Original Amount</th>
                                     <th class="amount">Balance</th>
                                 </tr>
                             </thead>
@@ -58,7 +58,7 @@
                                 <tr>
                                     <td />
                                     <td>
-                                        <span t-esc="d['start']" />
+                                        <span t-esc="d['prior_day']" />
                                     </td>
                                     <td>
                                             Balance Forward