diff --git a/addons/account_voucher/account_voucher.py b/addons/account_voucher/account_voucher.py
index 322d9dab6d5..bbd8976f36c 100644
--- a/addons/account_voucher/account_voucher.py
+++ b/addons/account_voucher/account_voucher.py
@@ -27,6 +27,7 @@ from openerp.osv import fields, osv
 import openerp.addons.decimal_precision as dp
 from openerp.tools.translate import _
 from openerp.tools import float_compare
+from openerp.report import report_sxw
 
 class res_currency(osv.osv):
     _inherit = "res.currency"
@@ -293,6 +294,36 @@ class account_voucher(osv.osv):
             res[voucher.id] =  self.pool.get('res.currency').compute(cr, uid, voucher.currency_id.id, voucher.company_id.currency_id.id, voucher.amount, context=ctx)
         return res
 
+    def _get_currency_help_label(self, cr, uid, currency_id, payment_rate, payment_rate_currency_id, context=None):
+        """
+        This function builds a string to help the users to understand the behavior of the payment rate fields they can specify on the voucher. 
+        This string is only used to improve the usability in the voucher form view and has no other effect.
+
+        :param currency_id: the voucher currency
+        :type currency_id: integer
+        :param payment_rate: the value of the payment_rate field of the voucher
+        :type payment_rate: float
+        :param payment_rate_currency_id: the value of the payment_rate_currency_id field of the voucher
+        :type payment_rate_currency_id: integer
+        :return: translated string giving a tip on what's the effect of the current payment rate specified
+        :rtype: str
+        """
+        rml_parser = report_sxw.rml_parse(cr, uid, 'currency_help_label', context=context)
+        currency_pool = self.pool.get('res.currency')
+        currency_str = payment_rate_str = ''
+        if currency_id:
+            currency_str = rml_parser.formatLang(1, currency_obj=currency_pool.browse(cr, uid, currency_id, context=context))
+        if payment_rate_currency_id:
+            payment_rate_str  = rml_parser.formatLang(payment_rate, currency_obj=currency_pool.browse(cr, uid, payment_rate_currency_id, context=context))
+        currency_help_label = _('At the operation date, the exchange rate was\n%s = %s') % (currency_str, payment_rate_str)
+        return currency_help_label
+
+    def _fnct_currency_help_label(self, cr, uid, ids, name, args, context=None):
+        res = {}
+        for voucher in self.browse(cr, uid, ids, context=context):
+            res[voucher.id] = self._get_currency_help_label(cr, uid, voucher.currency_id.id, voucher.payment_rate, voucher.payment_rate_currency_id.id, context=context)
+        return res
+
     _name = 'account.voucher'
     _description = 'Accounting Voucher'
     _inherit = ['mail.thread']
@@ -364,6 +395,7 @@ class account_voucher(osv.osv):
             help='The specific rate that will be used, in this voucher, between the selected currency (in \'Payment Rate Currency\' field)  and the voucher currency.'),
         'paid_amount_in_company_currency': fields.function(_paid_amount_in_company_currency, string='Paid Amount in Company Currency', type='float', readonly=True),
         'is_multi_currency': fields.boolean('Multi Currency Voucher', help='Fields with internal purpose only that depicts if the voucher is a multi currency one or not'),
+        'currency_help_label': fields.function(_fnct_currency_help_label, type='text', string="Helping Sentence", help="This sentence helps you to know how to specify the payment rate by giving you the direct effect it has"), 
     }
     _defaults = {
         'active': True,
@@ -536,7 +568,7 @@ class account_voucher(osv.osv):
         return default
 
     def onchange_rate(self, cr, uid, ids, rate, amount, currency_id, payment_rate_currency_id, company_id, context=None):
-        res =  {'value': {'paid_amount_in_company_currency': amount}}
+        res =  {'value': {'paid_amount_in_company_currency': amount, 'currency_help_label': self._get_currency_help_label(cr, uid, currency_id, rate, payment_rate_currency_id, context=context)}}
         if rate and amount and currency_id:
             company_currency = self.pool.get('res.company').browse(cr, uid, company_id, context=context).currency_id
             #context should contain the date, the payment currency and the payment rate specified on the voucher
@@ -815,7 +847,7 @@ class account_voucher(osv.osv):
         if context is None:
             context = {}
         res = {'value': {}}
-        if currency_id and currency_id == payment_rate_currency_id:
+        if currency_id:
             #set the default payment rate of the voucher and compute the paid amount in company currency
             ctx = context.copy()
             ctx.update({'date': date})
diff --git a/addons/account_voucher/voucher_payment_receipt_view.xml b/addons/account_voucher/voucher_payment_receipt_view.xml
index e7296a6670f..dea94d59f4e 100644
--- a/addons/account_voucher/voucher_payment_receipt_view.xml
+++ b/addons/account_voucher/voucher_payment_receipt_view.xml
@@ -46,6 +46,9 @@
                 </search>
             </field>
         </record>
+
+        <!-- TODO: merge the 3 voucher form views of this file into a single view -->
+        <!-- Low priority view... If we open a voucher from a m2o, for example. -->
         <record model="ir.ui.view" id="view_low_priority_payment_form">
             <field name="name">account.voucher.payment.low.priority.form</field>
             <field name="model">account.voucher</field>
@@ -119,6 +122,7 @@
             </field>
         </record>
 
+        <!-- Supplier Payment -->
         <record model="ir.ui.view" id="view_vendor_payment_form">
             <field name="name">account.voucher.payment.form</field>
             <field name="model">account.voucher</field>
@@ -193,12 +197,16 @@
                                     <field name="narration" colspan="2" nolabel="1"/>
                                 </group>
                                 <group>
-                                    <group col="4" attrs="{'invisible':[('is_multi_currency','=',False)]}">
-                                        <separator string="Currency Options" colspan="4"/>
+                                    <group col="2" attrs="{'invisible':[('is_multi_currency','=',False)]}">
+                                        <separator string="Currency Options" colspan="2"/>
                                         <field name="is_multi_currency" invisible="1"/>
-                                        <field name="payment_rate" required="1" colspan="3" on_change="onchange_amount(amount, payment_rate, partner_id, journal_id, currency_id, type, date, payment_rate_currency_id, company_id, context)"/>
-                                        <field name="payment_rate_currency_id" colspan="1" nolabel="1" on_change="onchange_payment_rate_currency(currency_id, payment_rate, payment_rate_currency_id, date, amount, company_id, context)" groups="base.group_multi_currency"/>
-                                        <field name="paid_amount_in_company_currency" colspan="4" invisible="1"/>
+					<label for="payment_rate" colspan="1"/>
+					<div>
+                                            <field name="payment_rate" required="1" class="oe_inline" on_change="onchange_amount(amount, payment_rate, partner_id, journal_id, currency_id, type, date, payment_rate_currency_id, company_id, context)"/>
+                                            <field name="payment_rate_currency_id" class="oe_inline" on_change="onchange_payment_rate_currency(currency_id, payment_rate, payment_rate_currency_id, date, amount, company_id, context)" groups="base.group_multi_currency"/>
+                                        </div>
+                                        <field name="currency_help_label" colspan="2" nolabel="1" class="oe_grey"/>
+                                        <field name="paid_amount_in_company_currency" colspan="2" invisible="1"/>
                                     </group>
                                     <group col="2">
                                         <separator string="Payment Options" colspan="2"/>
@@ -282,6 +290,7 @@
         <menuitem action="action_vendor_payment" icon="STOCK_JUSTIFY_FILL" sequence="12"
             id="menu_action_vendor_payment"  parent="account.menu_finance_payables"/>
 
+        <!-- Register Payment Form (old Pay Invoice wizard) -->
         <record model="ir.ui.view" id="view_vendor_receipt_dialog_form">
             <field name="name">account.voucher.receipt.dialog.form</field>
             <field name="model">account.voucher</field>
@@ -392,6 +401,7 @@
         </record>
 
 
+        <!-- Customer Payment -->
         <record model="ir.ui.view" id="view_vendor_receipt_form">
             <field name="name">account.voucher.receipt.form</field>
             <field name="model">account.voucher</field>
@@ -474,8 +484,12 @@
                                 </group>
                                 <group col="4" attrs="{'invisible':[('is_multi_currency','=',False)]}">
                                     <field name="is_multi_currency" invisible="1"/>
-                                    <field name="payment_rate" required="1" colspan="3" on_change="onchange_amount(amount, payment_rate, partner_id, journal_id, currency_id, type, date, payment_rate_currency_id, company_id, context)"/>
-                                    <field name="payment_rate_currency_id" colspan="1" nolabel="1" on_change="onchange_payment_rate_currency(currency_id, payment_rate, payment_rate_currency_id, date, amount, company_id, context)" groups="base.group_multi_currency"/>
+				    <label for="payment_rate" colspan="1"/>
+				    <div>
+                                        <field name="payment_rate" required="1" class="oe_inline" on_change="onchange_amount(amount, payment_rate, partner_id, journal_id, currency_id, type, date, payment_rate_currency_id, company_id, context)"/>
+                                        <field name="payment_rate_currency_id" class="oe_inline" on_change="onchange_payment_rate_currency(currency_id, payment_rate, payment_rate_currency_id, date, amount, company_id, context)" groups="base.group_multi_currency"/>
+                                    </div>
+                                    <field name="currency_help_label" colspan="2" nolabel="1" class="oe_grey"/>
                                     <field name="paid_amount_in_company_currency" colspan="4" invisible="1"/>
                                 </group>
                                 <group>
diff --git a/addons/account_voucher/voucher_sales_purchase_view.xml b/addons/account_voucher/voucher_sales_purchase_view.xml
index ca7e46053b4..dc732129803 100644
--- a/addons/account_voucher/voucher_sales_purchase_view.xml
+++ b/addons/account_voucher/voucher_sales_purchase_view.xml
@@ -147,8 +147,9 @@
                     </notebook>
                     <group col="4" invisible="1">
                                     <field name="is_multi_currency" invisible="1"/>
-                                    <field name="payment_rate" required="1" on_change="onchange_rate(payment_rate, amount, currency_id, payment_rate_currency_id, company_id, context)" colspan="3" invisible="1"/>
-                                    <field name="payment_rate_currency_id" colspan="1" nolabel="1" on_change="onchange_payment_rate_currency(currency_id, payment_rate, payment_rate_currency_id, date, amount, company_id, context)" groups="base.group_multi_currency" invisible="1"/>
+                                    <field name="currency_help_label" invisible="1"/>
+                                    <field name="payment_rate" invisible="1"/>
+                                    <field name="payment_rate_currency_id"  invisible="1"/>
                                     <field name="paid_amount_in_company_currency" colspan="4" invisible="1"/>
                     </group>
                     </sheet>
@@ -243,6 +244,7 @@
                                 on_change="onchange_journal(journal_id, line_dr_ids, tax_id, partner_id, date, amount, type, company_id, context)"
                                 groups="account.group_account_user"/>
                             <field name="paid_amount_in_company_currency" invisible="1"/>
+                            <field name="currency_help_label" invisible="1"/>
                         </group>
                     </group>
                     <notebook>