diff --git a/addons/account_payment/models/account_move.py b/addons/account_payment/models/account_move.py
index 1a5b3da8ab1..3ad2a0cdba3 100644
--- a/addons/account_payment/models/account_move.py
+++ b/addons/account_payment/models/account_move.py
@@ -15,7 +15,8 @@ class AccountMove(models.Model):
         readonly=True, copy=False)
     authorized_transaction_ids = fields.Many2many(
         string="Authorized Transactions", comodel_name='payment.transaction',
-        compute='_compute_authorized_transaction_ids', readonly=True, copy=False)
+        compute='_compute_authorized_transaction_ids', readonly=True, copy=False,
+        compute_sudo=True)
     amount_paid = fields.Monetary(
         string="Amount paid",
         compute='_compute_amount_paid'
@@ -64,7 +65,7 @@ class AccountMove(models.Model):
 
     def get_portal_last_transaction(self):
         self.ensure_one()
-        return self.with_context(active_test=False).transaction_ids._get_last()
+        return self.with_context(active_test=False).transaction_ids.sudo()._get_last()
 
     def payment_action_capture(self):
         """ Capture all transactions linked to this invoice. """
diff --git a/addons/account_payment/security/ir.model.access.csv b/addons/account_payment/security/ir.model.access.csv
index 64198ce3726..2d760562796 100644
--- a/addons/account_payment/security/ir.model.access.csv
+++ b/addons/account_payment/security/ir.model.access.csv
@@ -1,3 +1,4 @@
 id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
 payment_link_wizard,payment.link.wizard,payment.model_payment_link_wizard,account.group_account_invoice,1,1,1,0
 payment_refund_wizard,payment.refund.wizard,model_payment_refund_wizard,account.group_account_invoice,1,1,1,0
+payment_transaction_user,payment.transaction.user,model_payment_transaction,account.group_account_invoice,1,1,1,0
diff --git a/addons/account_payment/security/ir_rules.xml b/addons/account_payment/security/ir_rules.xml
index c3f4dd9c812..58fe64373d7 100644
--- a/addons/account_payment/security/ir_rules.xml
+++ b/addons/account_payment/security/ir_rules.xml
@@ -1,16 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <odoo noupdate="1">
 
-    <!-- Transactions -->
-
-    <record id="payment_transaction_billing_rule" model="ir.rule">
-        <field name="name">Access every transaction</field>
-        <field name="model_id" ref="payment.model_payment_transaction"/>
-        <!-- Reset the domain defined by payment.transaction_user_rule -->
-        <field name="domain_force">[(1, '=', 1)]</field>
-        <field name="groups" eval="[(4, ref('account.group_account_invoice'))]"/>
-    </record>
-
     <!-- Tokens -->
 
     <record id="payment_token_billing_rule" model="ir.rule">
diff --git a/addons/account_payment/views/account_portal_templates.xml b/addons/account_payment/views/account_portal_templates.xml
index 7405ca73af0..17bfbabe292 100644
--- a/addons/account_payment/views/account_portal_templates.xml
+++ b/addons/account_payment/views/account_portal_templates.xml
@@ -12,19 +12,19 @@
             </td>
         </xpath>
         <xpath expr="//t[@name='invoice_status_posted']/span[1]" position="before">
-            <t t-set="last_tx" t-value="invoice.get_portal_last_transaction()"/>
+            <t t-set="tx_sudo" t-value="invoice.get_portal_last_transaction()"/>
         </xpath>
         <xpath expr="//span[@name='invoice_status_waiting_for_payment']" position="before">
-            <span t-elif="last_tx.state == 'authorized'"
+            <span t-elif="tx_sudo.state == 'authorized'"
                     class="badge rounded-pill text-bg-primary">
                 <i class="fa fa-fw fa-check"/>
                 <span class="d-none d-md-inline"> Authorized</span>
             </span>
-            <span t-elif="last_tx.state == 'pending' and last_tx.provider_code not in ('none', 'custom')"
+            <span t-elif="tx_sudo.state == 'pending' and tx_sudo.provider_code not in ('none', 'custom')"
                     class="badge rounded-pill text-bg-warning">
                 <span class="d-none d-md-inline"> Pending</span>
             </span>
-            <span t-elif="last_tx.state == 'done'" class="badge rounded-pill text-bg-success">
+            <span t-elif="tx_sudo.state == 'done'" class="badge rounded-pill text-bg-success">
                 <i class="fa fa-fw fa-check"></i>
                 <span class="d-none d-md-inline"> Paid</span>
             </span>
@@ -100,9 +100,9 @@
             </t>
             <t t-elif="error == 'pay_invoice_tx_fail'">
                 There was an error processing your payment: transaction failed.<br />
-                <t t-set="tx_id" t-value="invoice.get_portal_last_transaction()"/>
-                <t t-if="tx_id and tx_id.state_message">
-                    <t t-out="tx_id.state_message"/>
+                <t t-set="tx_sudo" t-value="invoice.get_portal_last_transaction()"/>
+                <t t-if="tx_sudo and tx_sudo.state_message">
+                    <t t-out="tx_sudo.state_message"/>
                 </t>
             </t>
             <t t-elif="error == 'pay_invoice_tx_token'">
@@ -115,9 +115,9 @@
             inherit_id="account.portal_invoice_success">
         <xpath expr="//a[hasclass('close')]" position="after">
             <t t-if="success == 'pay_invoice'">
-                <t t-set="payment_tx_id" t-value="invoice.get_portal_last_transaction()"/>
-                <span t-if='payment_tx_id.provider_id.sudo().done_msg' t-out="payment_tx_id.provider_id.sudo().done_msg"/>
-                <div t-if="payment_tx_id.provider_id.sudo().pending_msg and payment_tx_id.provider_code == 'custom' and invoice.ref">
+                <t t-set="tx_sudo" t-value="invoice.get_portal_last_transaction()"/>
+                <span t-if="tx_sudo.provider_id.sudo().done_msg" t-out="tx_sudo.provider_id.sudo().done_msg"/>
+                <div t-if="tx_sudo.provider_id.sudo().pending_msg and tx_sudo.provider_code == 'custom' and invoice.ref">
                     <b>Communication: </b><span t-out='invoice.ref'/>
                 </div>
             </t>
diff --git a/addons/payment/security/ir.model.access.csv b/addons/payment/security/ir.model.access.csv
index 1dfd9af50a5..2706330d09d 100644
--- a/addons/payment/security/ir.model.access.csv
+++ b/addons/payment/security/ir.model.access.csv
@@ -7,6 +7,4 @@ payment_method_all,payment.method.all,model_payment_method,,1,0,0,0
 payment_method_system,payment.method.system,model_payment_method,base.group_system,1,1,1,1
 payment_token_all,payment.token.all,model_payment_token,,1,0,0,0
 payment_token_system,payment.token.system,model_payment_token,base.group_system,1,1,1,1
-payment_transaction_all,payment.transaction.all,model_payment_transaction,,1,0,0,0
 payment_transaction_system,payment.transaction.system,model_payment_transaction,base.group_system,1,1,1,1
-payment_transaction_user,payment.transaction.user,model_payment_transaction,base.group_user,1,1,1,0
diff --git a/addons/payment/security/payment_security.xml b/addons/payment/security/payment_security.xml
index 4de5e36f8e9..58b5f69772c 100644
--- a/addons/payment/security/payment_security.xml
+++ b/addons/payment/security/payment_security.xml
@@ -11,13 +11,6 @@
 
     <!-- Transactions -->
 
-    <record id="payment_transaction_user_rule" model="ir.rule">
-        <field name="name">Access own transactions only</field>
-        <field name="model_id" ref="payment.model_payment_transaction"/>
-        <field name="domain_force">['|', ('partner_id', '=', False), ('partner_id', '=', user.partner_id.id)]</field>
-        <field name="groups" eval="[(4, ref('base.group_user')), (4, ref('base.group_portal'))]"/>
-    </record>
-
     <record id="transaction_company_rule" model="ir.rule">
         <field name="name">Access transactions in own companies only</field>
         <field name="model_id" ref="payment.model_payment_transaction"/>
diff --git a/addons/sale/data/mail_template_data.xml b/addons/sale/data/mail_template_data.xml
index 9adcef8dd5b..a05caacee87 100644
--- a/addons/sale/data/mail_template_data.xml
+++ b/addons/sale/data/mail_template_data.xml
@@ -56,13 +56,13 @@
     <p style="margin: 0px; padding: 0px; font-size: 12px;">
         Hello,
         <br/><br/>
-        <t t-set="transaction" t-value="object.get_portal_last_transaction()"/>
+        <t t-set="tx_sudo" t-value="object.get_portal_last_transaction()"/>
         Your order <span style="font-weight:bold;" t-out="object.name or ''">S00049</span> amounting in <span style="font-weight:bold;" t-out="format_amount(object.amount_total, object.currency_id) or ''">$ 10.00</span>
-        <t t-if="object.state == 'sale' or (transaction and transaction.state in ('done', 'authorized'))">
+        <t t-if="object.state == 'sale' or (tx_sudo and tx_sudo.state in ('done', 'authorized'))">
             has been confirmed.<br/>
             Thank you for your trust!
         </t>
-        <t t-elif="transaction and transaction.state == 'pending'">
+        <t t-elif="tx_sudo and tx_sudo.state == 'pending'">
             is pending. It will be confirmed when the payment is received.
             <t t-if="object.reference">
                 Your payment reference is <span style="font-weight:bold;" t-out="object.reference or ''"></span>.
@@ -187,13 +187,13 @@
             <tr>
                 <td>
                     <span style="font-weight:bold;">Payment Method:</span>
-                    <t t-if="transaction.token_id">
-                        <t t-out="transaction.token_id.display_name or ''"></t>
+                    <t t-if="tx_sudo.token_id">
+                        <t t-out="tx_sudo.token_id.display_name or ''"></t>
                     </t>
                     <t t-else="">
-                        <t t-out="transaction.provider_id.sudo().name or ''"></t>
+                        <t t-out="tx_sudo.provider_id.sudo().name or ''"></t>
                     </t>
-                    (<t t-out="format_amount(transaction.amount, object.currency_id) or ''">$ 10.00</t>)
+                    (<t t-out="format_amount(tx_sudo.amount, object.currency_id) or ''">$ 10.00</t>)
                 </td>
             </tr>
         </table>
diff --git a/addons/sale/models/sale_order.py b/addons/sale/models/sale_order.py
index e9eb31b8623..b93b7e82533 100644
--- a/addons/sale/models/sale_order.py
+++ b/addons/sale/models/sale_order.py
@@ -244,7 +244,8 @@ class SaleOrder(models.Model):
         comodel_name='payment.transaction',
         string="Authorized Transactions",
         compute='_compute_authorized_transaction_ids',
-        copy=False)
+        copy=False,
+        compute_sudo=True)
 
     # UTMs - enforcing the fact that we want to 'set null' when relation is unlinked
     campaign_id = fields.Many2one(ondelete='set null')
@@ -1405,7 +1406,7 @@ class SaleOrder(models.Model):
 
     def get_portal_last_transaction(self):
         self.ensure_one()
-        return self.transaction_ids._get_last()
+        return self.transaction_ids.sudo()._get_last()
 
     def _get_order_lines_to_report(self):
         down_payment_lines = self.order_line.filtered(lambda line:
diff --git a/addons/sale/views/sale_portal_templates.xml b/addons/sale/views/sale_portal_templates.xml
index 6fbc16a5f98..51cbc3174f2 100644
--- a/addons/sale/views/sale_portal_templates.xml
+++ b/addons/sale/views/sale_portal_templates.xml
@@ -437,7 +437,7 @@
                         <ul class="list-group mb-4">
                             <t t-foreach="invoices" t-as="i">
                                 <t t-set="report_url" t-value="i.get_portal_url(report_type='pdf', download=True)"/>
-                                <t t-set="authorized_tx_ids" t-value="i.transaction_ids.filtered(lambda tx: tx.state == 'authorized')"/>
+                                <t t-set="authorized_tx_ids" t-value="i.authorized_transaction_ids"/>
                                 <div class="d-flex flex-wrap align-items-center justify-content-between">
                                     <div>
                                         <a t-att-href="report_url">
diff --git a/addons/website_sale/controllers/delivery.py b/addons/website_sale/controllers/delivery.py
index 083b5c71d90..2ab0c5090cd 100644
--- a/addons/website_sale/controllers/delivery.py
+++ b/addons/website_sale/controllers/delivery.py
@@ -18,7 +18,7 @@ class WebsiteSaleDelivery(WebsiteSale):
         order.access_point_address = {}
         carrier_id = int(post['carrier_id'])
         if order and carrier_id != order.carrier_id.id:
-            if any(tx.state not in ('cancel', 'error', 'draft') for tx in order.transaction_ids):
+            if any(tx.sudo().state not in ('cancel', 'error', 'draft') for tx in order.transaction_ids):
                 raise UserError(_('It seems that there is already a transaction for your order, you can not change the delivery method anymore'))
             order._check_carrier_quotation(force_carrier_id=carrier_id)
         return self._update_website_sale_delivery_return(order, **post)
diff --git a/addons/website_sale/controllers/main.py b/addons/website_sale/controllers/main.py
index c63f2c5e242..0b05e283394 100644
--- a/addons/website_sale/controllers/main.py
+++ b/addons/website_sale/controllers/main.py
@@ -1606,21 +1606,21 @@ class WebsiteSale(http.Controller):
             order = request.env['sale.order'].sudo().browse(sale_order_id)
             assert order.id == request.session.get('sale_last_order_id')
 
-        tx = order.get_portal_last_transaction() if order else order.env['payment.transaction']
+        tx_sudo = order.get_portal_last_transaction() if order else order.env['payment.transaction']
 
-        if not order or (order.amount_total and not tx):
+        if not order or (order.amount_total and not tx_sudo):
             return request.redirect('/shop')
 
-        if order and not order.amount_total and not tx:
+        if order and not order.amount_total and not tx_sudo:
             order.with_context(send_email=True).action_confirm()
             return request.redirect(order.get_portal_url())
 
         # clean context and session, then redirect to the confirmation page
         request.website.sale_reset()
-        if tx and tx.state == 'draft':
+        if tx_sudo and tx_sudo.state == 'draft':
             return request.redirect('/shop')
 
-        PaymentPostProcessing.remove_transactions(tx)
+        PaymentPostProcessing.remove_transactions(tx_sudo)
         return request.redirect('/shop/confirmation')
 
     @http.route(['/shop/confirmation'], type='http', auth="public", website=True, sitemap=False)
diff --git a/addons/website_sale/models/sale_order.py b/addons/website_sale/models/sale_order.py
index 7c9cf9db4d6..90d627b2d46 100644
--- a/addons/website_sale/models/sale_order.py
+++ b/addons/website_sale/models/sale_order.py
@@ -538,7 +538,7 @@ class SaleOrder(models.Model):
         return self.filtered(
             lambda abandoned_sale_order:
             abandoned_sale_order.partner_id.email
-            and not any(transaction.state == 'error' for transaction in abandoned_sale_order.transaction_ids)
+            and not any(transaction.sudo().state == 'error' for transaction in abandoned_sale_order.transaction_ids)
             and any(not float_is_zero(line.price_unit, precision_rounding=line.currency_id.rounding) for line in abandoned_sale_order.order_line)
             and not has_later_sale_order.get(abandoned_sale_order.partner_id, False)
         )
diff --git a/addons/website_sale/views/templates.xml b/addons/website_sale/views/templates.xml
index 01fa2c5a5b3..16507fe8dd1 100644
--- a/addons/website_sale/views/templates.xml
+++ b/addons/website_sale/views/templates.xml
@@ -2155,8 +2155,8 @@
                     <div class="row">
                         <div class="col-12 col-xl">
                             <div class="oe_cart">
-                                <t t-set="payment_tx_id" t-value="order.get_portal_last_transaction()"/>
-                                <t t-if="payment_tx_id.state == 'done'">
+                                <t t-set="tx_sudo" t-value="order.get_portal_last_transaction()"/>
+                                <t t-if="tx_sudo.state == 'done'">
                                     <div class="thanks_msg">
                                         <h2>Thank you for your order.
                                             <a role="button" class="btn btn-primary d-none d-md-inline-block" href="/shop/print" target="_blank" aria-label="Print" title="Print"><i class="fa fa-print"></i> Print</a>
@@ -2173,18 +2173,18 @@
                                 <h3 class="text-start mt-3">
                                     <strong>Payment Information:</strong>
                                 </h3>
-                                <t t-set="payment_tx_id" t-value="order.get_portal_last_transaction()"/>
+                                <t t-set="tx_sudo" t-value="order.get_portal_last_transaction()"/>
                                 <table class="table">
                                     <tbody>
                                         <tr>
                                             <td colspan="2">
-                                                <t t-esc="payment_tx_id.provider_id.display_as or payment_tx_id.provider_id.name" />
+                                                <t t-esc="tx_sudo.provider_id.display_as or tx_sudo.provider_id.name" />
                                             </td>
                                             <td class="text-end" width="100">
                                                 <strong>Total:</strong>
                                             </td>
                                             <td class="text-end" width="100">
-                                                <strong t-field="payment_tx_id.amount" t-options="{'widget': 'monetary', 'display_currency': order.currency_id}" />
+                                                <strong t-field="tx_sudo.amount" t-options="{'widget': 'monetary', 'display_currency': order.currency_id}" />
                                             </td>
                                         </tr>
                                     </tbody>
@@ -2265,45 +2265,45 @@
 
     <template id="payment_confirmation_status">
         <div class="oe_website_sale_tx_status mt-3" t-att-data-order-id="order.id" t-att-data-order-tracking-info="json.dumps(order_tracking_info)">
-            <t t-set="payment_tx_id" t-value="order.get_portal_last_transaction()"/>
+            <t t-set="tx_sudo" t-value="order.get_portal_last_transaction()"/>
             <div t-attf-class="card #{
-                (payment_tx_id.state == 'pending' and 'bg-info') or
-                (payment_tx_id.state == 'done' and order.amount_total == payment_tx_id.amount and 'alert-success') or
-                (payment_tx_id.state == 'done' and order.amount_total != payment_tx_id.amount and 'bg-warning') or
-                (payment_tx_id.state == 'authorized' and 'alert-success') or
+                (tx_sudo.state == 'pending' and 'bg-info') or
+                (tx_sudo.state == 'done' and order.amount_total == tx_sudo.amount and 'alert-success') or
+                (tx_sudo.state == 'done' and order.amount_total != tx_sudo.amount and 'bg-warning') or
+                (tx_sudo.state == 'authorized' and 'alert-success') or
                 'bg-danger'}">
                 <div class="card-header">
                     <a role="button" groups="base.group_system" class="btn btn-sm btn-link text-white float-end" target="_blank" aria-label="Edit" title="Edit"
-                            t-att-href="'/web#model=%s&amp;id=%s&amp;action=%s&amp;view_type=form' % ('payment.provider', payment_tx_id.provider_id.id, 'payment.action_payment_provider')">
+                            t-att-href="'/web#model=%s&amp;id=%s&amp;action=%s&amp;view_type=form' % ('payment.provider', tx_sudo.provider_id.id, 'payment.action_payment_provider')">
                         <i class="fa fa-pencil"></i>
                     </a>
-                    <t t-if="payment_tx_id.state == 'pending'">
-                        <t t-out="payment_tx_id.provider_id.sudo().pending_msg"/>
+                    <t t-if="tx_sudo.state == 'pending'">
+                        <t t-out="tx_sudo.provider_id.sudo().pending_msg"/>
                     </t>
-                    <t t-if="payment_tx_id.state == 'done'">
-                        <span t-if='payment_tx_id.provider_id.sudo().done_msg' t-out="payment_tx_id.provider_id.sudo().done_msg"/>
+                    <t t-if="tx_sudo.state == 'done'">
+                        <span t-if='tx_sudo.provider_id.sudo().done_msg' t-out="tx_sudo.provider_id.sudo().done_msg"/>
                     </t>
-                    <t t-if="payment_tx_id.state == 'done' and order.amount_total != payment_tx_id.amount">
+                    <t t-if="tx_sudo.state == 'done' and order.amount_total != tx_sudo.amount">
                         <span>Unfortunately your order can not be confirmed as the amount of your payment does not match the amount of your cart.
                         Please contact the responsible of the shop for more information.</span>
                     </t>
-                    <t t-if="payment_tx_id.state == 'cancel'">
-                        <t t-out="payment_tx_id.provider_id.sudo().cancel_msg"/>
+                    <t t-if="tx_sudo.state == 'cancel'">
+                        <t t-out="tx_sudo.provider_id.sudo().cancel_msg"/>
                     </t>
-                    <t t-if="payment_tx_id.state == 'authorized'">
-                        <t t-if="payment_tx_id.provider_id.sudo().auth_msg" t-out="payment_tx_id.provider_id.sudo().auth_msg"/>
+                    <t t-if="tx_sudo.state == 'authorized'">
+                        <t t-if="tx_sudo.provider_id.sudo().auth_msg" t-out="tx_sudo.provider_id.sudo().auth_msg"/>
                         <span t-else="">Your payment has been authorized.</span>
                     </t>
-                    <t t-if="payment_tx_id.state == 'error'">
-                        <span t-esc="payment_tx_id.state_message"/>
+                    <t t-if="tx_sudo.state == 'error'">
+                        <span t-esc="tx_sudo.state_message"/>
                     </t>
                 </div>
-                <t t-if="payment_tx_id.provider_code == 'custom'">
+                <t t-if="tx_sudo.provider_code == 'custom'">
                     <div t-if="order.reference" class="card-body">
                         <b>Communication: </b><span t-esc='order.reference'/>
                     </div>
-                    <div t-if="payment_tx_id.provider_id.sudo().qr_code">
-                        <t t-set="qr_code" t-value="payment_tx_id.company_id.partner_id.bank_ids[:1].build_qr_code_base64(order.amount_total,payment_tx_id.reference, None, payment_tx_id.currency_id, payment_tx_id.partner_id)"/>
+                    <div t-if="tx_sudo.provider_id.sudo().qr_code">
+                        <t t-set="qr_code" t-value="tx_sudo.company_id.partner_id.bank_ids[:1].build_qr_code_base64(order.amount_total,tx_sudo.reference, None, tx_sudo.currency_id, tx_sudo.partner_id)"/>
                         <div class="card-body" t-if="qr_code">
                             <h3>Or scan me with your banking app.</h3>
                             <img class="border border-dark rounded" t-att-src="qr_code"/>
diff --git a/addons/website_sale_picking/views/templates.xml b/addons/website_sale_picking/views/templates.xml
index c9c214937fa..a67a8f5e8a1 100644
--- a/addons/website_sale_picking/views/templates.xml
+++ b/addons/website_sale_picking/views/templates.xml
@@ -14,7 +14,7 @@
 
     <template id="payment_confirmation_status" inherit_id="website_sale.payment_confirmation_status">
         <xpath expr="(//div[hasclass('card-body')])[1]" position="replace">
-            <t t-if="payment_tx_id.provider_id.custom_mode == 'onsite'">
+            <t t-if="tx_sudo.provider_id.custom_mode == 'onsite'">
                 <div class="card-body">
                     <div class="o_header_carrier_message">
                         <b t-out="order.carrier_id.name"/><span class="text-muted"> (On site picking)</span>