diff --git a/src/cutecoin/gui/informations_tab.py b/src/cutecoin/gui/informations_tab.py
index 71bf6f86fcf7a504636f0edbd9102b703e3e98f6..e201623e4d4ce77e8581c332367e4547f071e310 100644
--- a/src/cutecoin/gui/informations_tab.py
+++ b/src/cutecoin/gui/informations_tab.py
@@ -7,6 +7,7 @@ Created on 31 janv. 2015
 import logging
 import datetime
 import math
+from PyQt5.QtCore import QLocale
 from PyQt5.QtWidgets import QWidget
 from ..gen_resources.informations_tab_uic import Ui_InformationsTabWidget
 
@@ -48,6 +49,20 @@ class InformationsTabWidget(QWidget, Ui_InformationsTabWidget):
             return False
 
         if block:
+            ud = round(self.get_referential_diff_value(block['dividend']))
+            if isinstance(ud, int):
+                localized_ud = QLocale().toString(ud)
+                localized_monetary_mass = QLocale().toString(round(self.get_referential_value(block['monetaryMass'])))
+                localized_mass_per_member = QLocale().toString(round(self.get_referential_value(block['monetaryMass'] / block['membersCount'])))
+            else:
+                localized_ud = QLocale().toString(ud, 'f', 2)
+                localized_monetary_mass = QLocale().toString(
+                    round(self.get_referential_value(block['monetaryMass'])), 'f', 2
+                )
+                localized_mass_per_member = QLocale().toString(
+                    round(self.get_referential_value(block['monetaryMass'] / block['membersCount']), 'f', 2)
+                )
+
             # set infos in label
             self.label_general.setText(
                 """
@@ -60,15 +75,15 @@ class InformationsTabWidget(QWidget, Ui_InformationsTabWidget):
                 <tr><td align="right"><b>{:}</b></td><td>{:}</td></tr>
                 </table>
                 """.format(
-                    round(self.get_referential_diff_value(block['dividend'])),
+                    localized_ud,
                     'Universal Dividend UD(t) in',
                     self.get_referential_name(),
-                    round(self.get_referential_value(block['monetaryMass'])),
+                    localized_monetary_mass,
                     'Monetary Mass M(t) in',
                     self.get_referential_name(),
                     block['membersCount'],
                     'Members N(t)',
-                    round(self.get_referential_value(block['monetaryMass'] / block['membersCount'])),
+                    localized_mass_per_member,
                     'Monetary Mass per member M(t)/N(t) in',
                     self.get_referential_name(),
                     block['dividend'] / (block_t_minus_1['monetaryMass'] / block['membersCount']),
@@ -82,6 +97,21 @@ class InformationsTabWidget(QWidget, Ui_InformationsTabWidget):
             self.label_general.setText('No Universal Dividend created yet.')
 
         if block:
+            if isinstance(ud, int):
+                localized_ud_t1 = QLocale().toString(
+                    self.get_referential_diff_value(
+                        math.ceil(max(block['dividend'], params['c'] * block['monetaryMass'] / block['membersCount']))
+                    )
+                )
+            else:
+                localized_ud_t1 = QLocale().toString(
+                    self.get_referential_diff_value(
+                        math.ceil(max(block['dividend'], params['c'] * block['monetaryMass'] / block['membersCount']))
+                    ),
+                    'f',
+                    2
+                )
+
             # set infos in label
             self.label_rules.setText(
                 """
@@ -96,11 +126,11 @@ class InformationsTabWidget(QWidget, Ui_InformationsTabWidget):
                     'UD(t+1) = MAX { UD(t) ; c * M(t) / N(t) }',
                     'Universal Dividend (formula)',
                     '{:} = MAX {{ {:} {:} ; {:2.0%} * {:} {:} / {:} }}'.format(
-                        math.ceil(max(block['dividend'], params['c'] * block['monetaryMass'] / block['membersCount'])),
-                        round(self.get_referential_diff_value(block['dividend'])),
+                        localized_ud_t1,
+                        localized_ud,
                         self.get_referential_name(),
                         params['c'],
-                        round(self.get_referential_value(block['monetaryMass'])),
+                        localized_monetary_mass,
                         self.get_referential_name(),
                         block['membersCount']
                     ),
diff --git a/src/cutecoin/gui/wallets_tab.py b/src/cutecoin/gui/wallets_tab.py
index 7702046ed9abf568585936197057b0ce250b4b33..d32f3ea4b3e3644e6a36e5acd5d64bfc2b694a66 100644
--- a/src/cutecoin/gui/wallets_tab.py
+++ b/src/cutecoin/gui/wallets_tab.py
@@ -6,7 +6,7 @@ Created on 15 févr. 2015
 
 import logging
 from PyQt5.QtWidgets import QWidget, QMenu, QAction, QApplication, QDialog
-from PyQt5.QtCore import QDateTime, QModelIndex, Qt
+from PyQt5.QtCore import QDateTime, QModelIndex, Qt, QLocale
 from PyQt5.QtGui import QCursor
 from ..core.person import Person
 from ..core.wallet import Wallet
@@ -62,12 +62,12 @@ class WalletsTabWidget(QWidget, Ui_WalletsTab):
                 <tr><td align="right"><b>{:}</b></td><td>{:}</td></tr>
                 </table>
                 """.format(
-                        self.account.name, self.account.pubkey,
-                        "Membership",
-                        "Last renewal on {:}, expiration on {:}".format(date_renewal, date_expiration),
-                        "Your web of trust :",
-                        "Certified by : {:} members; Certifier of : {:} members".format(len(certifiers),
-                                                                         len(certified))
+                    self.account.name, self.account.pubkey,
+                    "Membership",
+                    "Last renewal on {:}, expiration on {:}".format(date_renewal, date_expiration),
+                    "Your web of trust :",
+                    "Certified by : {:} members; Certifier of : {:} members".format(len(certifiers),
+                                                                                    len(certified))
                 )
             )
         else:
@@ -80,17 +80,27 @@ class WalletsTabWidget(QWidget, Ui_WalletsTab):
                 <tr><td align="right"><b>{:}</b></td><td>{:}</td></tr>
                 </table>
                 """.format(
-                        self.account.name, self.account.pubkey,
-                        "Not a member",
-                        "Your web of trust :",
-                        "Certified by : {:} members; Certifier of : {:} members".format(len(certifiers),
-                                                                         len(certified))
+                    self.account.name, self.account.pubkey,
+                    "Not a member",
+                    "Your web of trust :",
+                    "Certified by : {:} members; Certifier of : {:} members".format(len(certifiers),
+                                                                                    len(certified))
                 )
             )
 
         amount = self.account.amount(self.community)
         maximum = self.community.monetary_mass
 
+        if isinstance(amount, int):
+            localized_amount = QLocale().toString(self.get_referential_value(amount))
+        else:
+            localized_amount = QLocale().toString(self.get_referential_value(amount), 'f', 2)
+
+        if isinstance(maximum, int):
+            localized_maximum = QLocale().toString(self.get_referential_value(maximum))
+        else:
+            localized_maximum = QLocale().toString(self.get_referential_value(maximum), 'f', 2)
+
         # set infos in label
         self.label_balance.setText(
             """
@@ -98,13 +108,14 @@ class WalletsTabWidget(QWidget, Ui_WalletsTab):
             <tr><td align="right"><b>{:}</b></td><td>{:}</td></tr>
             <tr><td align="right"><b>{:}</b></td><td>{:}</td></tr>
             </table>
-            """.format("Your money share : ", "{:.2f}%".format(amount/maximum*100),
-                       "Your part : ", "{:.2f} {:} in [{:.2f} - {:.2f}] {:}"
-                       .format(self.get_referential_value(amount),
-                            self.get_referential_name(),
-                           self.get_referential_value(0),
-                           self.get_referential_value(maximum),
-                           self.get_referential_name())
+            """.format("Your money share : ", "{:.2f}%".format(amount / maximum * 100),
+                       "Your part : ", "{:} {:} in [{:.2f} - {:}] {:}"
+                       .format(
+                    localized_amount,
+                    self.get_referential_name(),
+                    self.get_referential_value(0),
+                    localized_maximum,
+                    self.get_referential_name())
             )
         )
 
@@ -131,11 +142,11 @@ class WalletsTabWidget(QWidget, Ui_WalletsTab):
 
             name_col = model.sourceModel().columns_types.index('name')
             name_index = model.index(index.row(),
-                                    name_col)
+                                     name_col)
 
             pubkey_col = model.sourceModel().columns_types.index('pubkey')
             pubkey_index = model.sourceModel().index(source_index.row(),
-                                                   pubkey_col)
+                                                     pubkey_col)
 
             pubkey = model.sourceModel().data(pubkey_index, Qt.DisplayRole)
             menu = QMenu(model.data(index, Qt.DisplayRole), self)
diff --git a/src/cutecoin/models/txhistory.py b/src/cutecoin/models/txhistory.py
index 03ec8772c4e613d2250356530cc26d77a9bc3384..97dc590eb1b5c740ea52431652a6c0c1b92debc1 100644
--- a/src/cutecoin/models/txhistory.py
+++ b/src/cutecoin/models/txhistory.py
@@ -9,7 +9,7 @@ from ..core.transfer import Transfer, Received
 from ..core.person import Person
 from ..tools.exceptions import PersonNotFoundError
 from PyQt5.QtCore import QAbstractTableModel, Qt, QVariant, QSortFilterProxyModel, \
-                        QDateTime
+    QDateTime, QLocale
 from PyQt5.QtGui import QFont, QColor
 
 
@@ -32,6 +32,7 @@ class TxFilterProxyModel(QSortFilterProxyModel):
     def filterAcceptsRow(self, sourceRow, sourceParent):
         def in_period(date_ts):
             return (date_ts in range(self.ts_from, self.ts_to))
+
         date_col = self.sourceModel().column_types.index('date')
         source_index = self.sourceModel().index(sourceRow, date_col)
         date = self.sourceModel().data(source_index, Qt.DisplayRole)
@@ -79,18 +80,15 @@ class TxFilterProxyModel(QSortFilterProxyModel):
             if source_index.column() == self.sourceModel().column_types.index('date'):
                 date = QDateTime.fromTime_t(source_data)
                 return date.date()
-            if source_index.column() == self.sourceModel().column_types.index('payment')  or \
-                source_index.column() == self.sourceModel().column_types.index('deposit'):
+            if source_index.column() == self.sourceModel().column_types.index('payment') or \
+                    source_index.column() == self.sourceModel().column_types.index('deposit'):
                 if source_data is not "":
                     amount_ref = self.account.units_to_diff_ref(source_data,
                                                                 self.community)
-
-                    if type(amount_ref) is int:
-                        formatter = "{0}"
+                    if isinstance(amount_ref, int):
+                        return QLocale().toString(amount_ref)
                     else:
-                        formatter = "{0:.2f}"
-
-                    return formatter.format(amount_ref)
+                        return QLocale().toString(amount_ref, 'f', 2)
 
         if role == Qt.FontRole:
             font = QFont()
@@ -111,7 +109,8 @@ class TxFilterProxyModel(QSortFilterProxyModel):
                 return QColor(Qt.blue)
 
         if role == Qt.TextAlignmentRole:
-            if source_index.column() == self.sourceModel().column_types.index('deposit') or source_index.column() == self.sourceModel().column_types.index('payment'):
+            if source_index.column() == self.sourceModel().column_types.index(
+                    'deposit') or source_index.column() == self.sourceModel().column_types.index('payment'):
                 return Qt.AlignRight | Qt.AlignVCenter
             if source_index.column() == self.sourceModel().column_types.index('date'):
                 return Qt.AlignCenter
@@ -124,7 +123,6 @@ class TxFilterProxyModel(QSortFilterProxyModel):
 
 
 class HistoryTableModel(QAbstractTableModel):
-
     '''
     A Qt abstract item model to display communities in a tree
     '''
@@ -201,7 +199,7 @@ class HistoryTableModel(QAbstractTableModel):
         try:
             receiver = Person.lookup(pubkey, self.community)
         except PersonNotFoundError:
-            #receiver = "pub:{0}".format(pubkey[:5])
+            # receiver = "pub:{0}".format(pubkey[:5])
             receiver = pubkey
 
         date_ts = transfer.metadata['time']
diff --git a/src/cutecoin/models/wallets.py b/src/cutecoin/models/wallets.py
index 460a0cc71e10603ed91a8386eb6ab0d06d6f5f97..a25d871153c998dbfd344e56c2aaefde98d58019 100644
--- a/src/cutecoin/models/wallets.py
+++ b/src/cutecoin/models/wallets.py
@@ -4,8 +4,7 @@ Created on 8 févr. 2014
 @author: inso
 '''
 
-from PyQt5.QtCore import QAbstractTableModel, QSortFilterProxyModel, Qt
-import logging
+from PyQt5.QtCore import QAbstractTableModel, QSortFilterProxyModel, Qt, QLocale
 
 
 class WalletsFilterProxyModel(QSortFilterProxyModel):
@@ -40,10 +39,10 @@ class WalletsFilterProxyModel(QSortFilterProxyModel):
                 return source_data
             if source_index.column() == self.sourceModel().columns_types.index('amount'):
                 amount_ref = self.account.units_to_ref(source_data, self.community)
-                if type(amount_ref) is int:
-                    return "{0}".format(amount_ref)
+                if isinstance(amount_ref, int):
+                    return QLocale().toString(amount_ref)
                 else:
-                    return "{0:.2f}".format(amount_ref)
+                    return QLocale().toString(amount_ref, 'f', 2)
 
         if role == Qt.TextAlignmentRole:
             if source_index.column() == self.sourceModel().columns_types.index('amount'):