diff --git a/contract/models/account_analytic_account.py b/contract/models/account_analytic_account.py
index 31ccf503..01f39037 100644
--- a/contract/models/account_analytic_account.py
+++ b/contract/models/account_analytic_account.py
@@ -199,28 +199,33 @@ class AccountAnalyticAccount(models.Model):
         return invoice_line_vals
 
     @api.multi
-    def _prepare_invoice(self):
+    def _prepare_invoice(self, journal=None):
         self.ensure_one()
         if not self.partner_id:
             raise ValidationError(
                 _("You must first select a Customer for Contract %s!") %
                 self.name)
-        journal = self.journal_id or self.env['account.journal'].search(
-            [('type', '=', 'sale'),
-             ('company_id', '=', self.company_id.id)],
-            limit=1)
+        if not journal:
+            journal = self.journal_id or self.env['account.journal'].search([
+                    ('type', '=', self.contract_type),
+                    ('company_id', '=', self.company_id.id)
+                ], limit=1)
         if not journal:
             raise ValidationError(
-                _("Please define a sale journal for the company '%s'.") %
-                (self.company_id.name or '',))
+                _("Please define a %s journal for the company '%s'.") %
+                (self.contract_type, self.company_id.name or '')
+            )
         currency = (
             self.pricelist_id.currency_id or
             self.partner_id.property_product_pricelist.currency_id or
             self.company_id.currency_id
         )
+        invoice_type = 'out_invoice'
+        if self.contract_type == 'purchase':
+            invoice_type = 'in_invoice'
         invoice = self.env['account.invoice'].new({
             'reference': self.code,
-            'type': 'out_invoice',
+            'type': invoice_type,
             'partner_id': self.partner_id.address_get(
                 ['invoice'])['invoice'],
             'currency_id': currency.id,
diff --git a/contract/models/account_analytic_contract.py b/contract/models/account_analytic_contract.py
index 6f04a9e5..1d67fb3b 100644
--- a/contract/models/account_analytic_contract.py
+++ b/contract/models/account_analytic_contract.py
@@ -6,7 +6,7 @@
 # Copyright 2015-2017 Tecnativa - Pedro M. Baeza
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
-from odoo import api, fields, models
+from odoo import api, fields, models, _
 
 
 class AccountAnalyticContract(models.Model):
@@ -26,6 +26,12 @@ class AccountAnalyticContract(models.Model):
         comodel_name="res.partner",
         string="Partner (always False)",
     )
+    contract_type = fields.Selection(
+        selection=[
+            ('sale', _('Sale')),
+            ('purchase', _('Purchase')),
+        ], default='sale'
+    )
     pricelist_id = fields.Many2one(
         comodel_name='product.pricelist',
         string='Pricelist',
@@ -64,7 +70,7 @@ class AccountAnalyticContract(models.Model):
         'account.journal',
         string='Journal',
         default=lambda s: s._default_journal(),
-        domain="[('type', '=', 'sale'),('company_id', '=', company_id)]",
+        domain="[('company_id', '=', company_id)]",
     )
     company_id = fields.Many2one(
         'res.company',
@@ -73,6 +79,13 @@ class AccountAnalyticContract(models.Model):
         default=lambda self: self.env.user.company_id,
     )
 
+    @api.onchange('contract_type')
+    def _onchange_contract_type(self):
+        self.journal_id = self.env['account.journal'].search([
+            ('type', '=', self.contract_type),
+            ('company_id', '=', self.company_id.id)
+        ], limit=1)
+
     @api.model
     def _default_journal(self):
         company_id = self.env.context.get(
diff --git a/contract/tests/test_contract.py b/contract/tests/test_contract.py
index eaef5f5f..df9c0525 100644
--- a/contract/tests/test_contract.py
+++ b/contract/tests/test_contract.py
@@ -233,6 +233,12 @@ class TestContract(TestContractBase):
         result = self.contract.action_contract_send()
         self.assertEqual(result['res_model'], 'mail.compose.message')
 
+    def test_onchange_contract_type(self):
+        self.contract._onchange_contract_type()
+        self.assertEqual(self.contract.journal_id.type, 'sale')
+        self.assertEqual(
+            self.contract.journal_id.company_id, self.contract.company_id)
+
     def test_contract_onchange_product_id_domain_blank(self):
         """It should return a blank UoM domain when no product."""
         line = self.env['account.analytic.contract.line'].new()
diff --git a/contract/views/account_analytic_account_view.xml b/contract/views/account_analytic_account_view.xml
index c85a7d5c..bf9ef8d5 100644
--- a/contract/views/account_analytic_account_view.xml
+++ b/contract/views/account_analytic_account_view.xml
@@ -95,6 +95,54 @@
         </field>
     </record>
 
+    <record id="account_analytic_account_sale_form" model="ir.ui.view">
+        <field name="name">account.analytic.account.sale.form</field>
+        <field name="model">account.analytic.account</field>
+        <field name="inherit_id" ref="contract.account_analytic_account_recurring_form_form"/>
+        <field name="mode">primary</field>
+        <field name="priority" eval="20"/>
+        <field name="arch" type="xml">
+            <field name="partner_id" position="attributes">
+                <attribute name="string">Customer</attribute>
+                <attribute name="domain">[('customer', '=', True)]</attribute>
+                <attribute name="context">{
+                    'default_customer': True,
+                    'default_supplier': False
+                }</attribute>
+            </field>
+            <field name="product_id" position="attributes">
+                <attribute name="domain">[('sale_ok', '=', True)]</attribute>
+            </field>
+            <xpath expr='//field[@name="code"]' position='before'>
+                <field name="contract_type">sale</field>
+            </xpath>
+        </field>
+    </record>
+
+    <record id="account_analytic_account_purchase_form" model="ir.ui.view">
+        <field name="name">account.analytic.account.purchase.form</field>
+        <field name="model">account.analytic.account</field>
+        <field name="inherit_id" ref="contract.account_analytic_account_recurring_form_form"/>
+        <field name="mode">primary</field>
+        <field name="priority" eval="20"/>
+        <field name="arch" type="xml">
+            <field name="partner_id" position="attributes">
+                <attribute name="string">Supplier</attribute>
+                <attribute name="domain">[('supplier', '=', True)]</attribute>
+                <attribute name="context">{
+                    'default_customer': False,
+                    'default_supplier': True
+                }</attribute>
+            </field>
+            <field name="product_id" position="attributes">
+                <attribute name="domain">[('purchase_ok', '=', True)]</attribute>
+            </field>
+            <xpath expr='//field[@name="code"]' position='before'>
+                <field name="contract_type">purchase</field>
+            </xpath>
+        </field>
+    </record>
+
     <!-- Inherited Analytic Account list for contracts -->
     <record id="view_account_analytic_account_journal_tree" model="ir.ui.view">
         <field name="name">Contract list</field>
@@ -154,12 +202,13 @@
     </record>
 
     <!-- Action Sales/Sales/Contracts -->
-    <record id="action_account_analytic_overdue_all" model="ir.actions.act_window">
+    <record id="action_account_analytic_sale_overdue_all" model="ir.actions.act_window">
         <field name="name">Contracts</field>
         <field name="res_model">account.analytic.account</field>
         <field name="view_type">form</field>
         <field name="view_mode">tree,form</field>
-        <field name="context">{'is_contract':1, 'search_default_not_finished':1, 'search_default_recurring_invoices':1, 'default_recurring_invoices': 1}</field>
+        <field name="domain">[('contract_type', '=', 'sale')]</field>
+        <field name="context">{'is_contract':1, 'search_default_not_finished':1, 'search_default_recurring_invoices':1, 'default_recurring_invoices': 1, 'default_type': 'sale'}</field>
         <field name="search_view_id" ref="analytic.view_account_analytic_account_search"/>
         <field name="help" type="html">
             <p class="oe_view_nocontent_create">
@@ -168,24 +217,60 @@
         </field>
     </record>
 
-    <record id="action_account_analytic_overdue_all_tree" model="ir.actions.act_window.view">
+    <record id="action_account_analytic_sale_overdue_all_tree" model="ir.actions.act_window.view">
         <field name="sequence" eval="1"/>
         <field name="view_mode">tree</field>
         <field name="view_id" ref="view_account_analytic_account_journal_tree"/>
-        <field name="act_window_id" ref="action_account_analytic_overdue_all"/>
+        <field name="act_window_id" ref="action_account_analytic_sale_overdue_all"/>
     </record>
 
-    <record id="action_account_analytic_overdue_all_form" model="ir.actions.act_window.view">
+    <record id="action_account_analytic_sale_overdue_all_form" model="ir.actions.act_window.view">
         <field name="sequence" eval="2"/>
         <field name="view_mode">form</field>
-        <field name="view_id" ref="account_analytic_account_recurring_form_form"/>
-        <field name="act_window_id" ref="action_account_analytic_overdue_all"/>
+        <field name="view_id" ref="account_analytic_account_sale_form"/>
+        <field name="act_window_id" ref="action_account_analytic_sale_overdue_all"/>
     </record>
 
-    <menuitem id="menu_action_account_analytic_overdue_all"
+    <menuitem id="menu_action_account_analytic_sale_overdue_all"
               parent="account.menu_finance_receivables_documents"
-              action="action_account_analytic_overdue_all"
+              action="action_account_analytic_sale_overdue_all"
               sequence="99"
               />
+    
+    <!-- Action Purchases/Purchases/Contracts -->
+    <record id="action_account_analytic_purchase_overdue_all" model="ir.actions.act_window">
+        <field name="name">Contracts</field>
+        <field name="res_model">account.analytic.account</field>
+        <field name="view_type">form</field>
+        <field name="view_mode">tree,form</field>
+        <field name="domain">[('contract_type', '=', 'purchase')]</field>
+        <field name="context">{'is_contract':1, 'search_default_not_finished':1, 'search_default_recurring_invoices':1, 'default_recurring_invoices': 1, 'default_type': 'purchase'}</field>
+        <field name="search_view_id" ref="analytic.view_account_analytic_account_search"/>
+        <field name="help" type="html">
+            <p class="oe_view_nocontent_create">
+                Click to create a new contract.
+            </p>
+        </field>
+    </record>
+    
+    <record id="action_account_analytic_purchase_overdue_all_tree" model="ir.actions.act_window.view">
+        <field name="sequence" eval="1"/>
+        <field name="view_mode">tree</field>
+        <field name="view_id" ref="view_account_analytic_account_journal_tree"/>
+        <field name="act_window_id" ref="action_account_analytic_purchase_overdue_all"/>
+    </record>
+
+    <record id="action_account_analytic_purchase_overdue_all_form" model="ir.actions.act_window.view">
+        <field name="sequence" eval="2"/>
+        <field name="view_mode">form</field>
+        <field name="view_id" ref="account_analytic_account_purchase_form"/>
+        <field name="act_window_id" ref="action_account_analytic_purchase_overdue_all"/>
+    </record>
+    
+    <menuitem id="menu_action_account_analytic_purchase_overdue_all"
+              parent="account.menu_finance_payables_documents"
+              action="action_account_analytic_purchase_overdue_all"
+              sequence="99"
+          />
 
 </odoo>