diff --git a/addons/account_voucher/__openerp__.py b/addons/account_voucher/__openerp__.py
index d4331a81923..dc7747fb593 100644
--- a/addons/account_voucher/__openerp__.py
+++ b/addons/account_voucher/__openerp__.py
@@ -60,6 +60,7 @@ Account Voucher module includes all the basic requirements of Voucher Entries fo
         "test/sales_receipt.yml",
         "test/sales_payment.yml",
         "test/account_voucher_report.yml",
+        "test/case1_usd_usd.yml",
         "test/case2_usd_eur.yml",
         "test/case3_eur_eur.yml",
         "test/case4_cad_chf.yml",
diff --git a/addons/account_voucher/test/case1_usd_usd.yml b/addons/account_voucher/test/case1_usd_usd.yml
new file mode 100755
index 00000000000..7751849120e
--- /dev/null
+++ b/addons/account_voucher/test/case1_usd_usd.yml
@@ -0,0 +1,345 @@
+-
+  I create a currency rate for USD for january of 1.333333
+-
+  !record {model: res.currency.rate, id: jan_usd}:
+    currency_id: base.USD
+    name: !eval "'%s-01-01' %(datetime.now().year)"
+    rate: 1.333333
+
+-
+  I create a currency rate for USD for february of 1.250000
+-
+  !record {model: res.currency.rate, id: feb_usd}:
+    currency_id: base.USD
+    name: !eval "'%s-02-01' %(datetime.now().year)"
+    rate: 1.250000
+
+-
+  I create a currency rate for USD for march of 1.111111
+-
+  !record {model: res.currency.rate, id: mar_usd}:
+    currency_id: base.USD
+    name: !eval "'%s-03-01' %(datetime.now().year)"
+    rate: 1.111111
+
+-
+  I create a currency rate for USD for april of 1.052632
+-
+  !record {model: res.currency.rate, id: apr_usd}:
+    currency_id: base.USD
+    name: !eval "'%s-04-01' %(datetime.now().year)"
+    rate: 1.052632
+
+-
+  I create a bank journal with USD as currency
+-
+  !record {model: account.journal, id: bank_journal_USD}:
+    name: Bank Journal(USD)
+    code: BUSD
+    type: bank
+    analytic_journal_id: account.sit
+    sequence_id: account.sequence_bank_journal
+    default_debit_account_id: account.cash
+    default_credit_account_id: account.cash
+    currency: base.USD
+    company_id: base.main_company
+    view_id: account.account_journal_bank_view
+
+-
+  I set up some accounts for currency rate expense/income in my company
+-
+  !record {model: res.company, id: base.main_company}:
+    property_expense_currency_exchange: account.o_expense
+    property_income_currency_exchange: account.o_income
+-
+  I'm creating new partner "Mr. strauss".
+-
+  !record {model: res.partner, id: res_partner_strauss0}:
+    address:
+      - city: paris
+        country_id: base.fr
+        name: Mark Strauss
+        street: 1 rue Rockfeller
+        type: invoice
+        zip: '75016'
+    name: Mr. Mark Strauss
+-
+  I create the first invoice on 1st January  for 200 USD
+-
+  !record {model: account.invoice, id: account_invoice_jan}:
+    account_id: account.a_recv
+    address_contact_id: base.res_partner_address_3000
+    address_invoice_id: base.res_partner_address_3000
+    company_id: base.main_company
+    currency_id: base.USD
+    date_invoice: !eval "'%s-01-01' %(datetime.now().year)"
+    period_id: account.period_1
+    invoice_line:
+      - account_id: account.a_sale
+        name: '[PC1] Basic PC'
+        price_unit: 200.0
+        quantity: 1.0
+        product_id: product.product_product_pc1
+        uos_id: product.product_uom_unit
+    journal_id: account.sales_journal
+    partner_id: res_partner_strauss0
+    reference_type: none
+-
+  I Validate invoice by clicking on Validate button
+-
+  !workflow {model: account.invoice, action: invoice_open, ref: account_invoice_jan}
+-
+  I check that first invoice move is correct for debtor account (debit - credit == 150.0)
+-
+  !python {model: account.invoice}: |
+    invoice_id = self.browse(cr, uid, ref("account_invoice_jan"))
+    assert invoice_id.move_id, "Move not created for open invoice"
+    move_line_obj = self.pool.get('account.move.line')
+    move_lines = move_line_obj.search(cr, uid, [('move_id', '=', invoice_id.move_id.id), ('account_id', '=', invoice_id.account_id.id)])
+    move_line = move_line_obj.browse(cr, uid, move_lines[0])
+    assert (move_line.debit - move_line.credit == 150.0), "Invoice move is correct for debtors account"
+-
+  I create the second invoice on 1st February for 100 USD
+-
+  !record {model: account.invoice, id: account_invoice_feb}:
+    account_id: account.a_recv
+    address_contact_id: base.res_partner_address_3000
+    address_invoice_id: base.res_partner_address_3000
+    company_id: base.main_company
+    currency_id: base.USD
+    date_invoice: !eval "'%s-02-01' %(datetime.now().year)"
+    period_id: account.period_2
+    invoice_line:
+      - account_id: account.a_sale
+        name: '[PC1] Basic PC'
+        price_unit: 100.0
+        quantity: 1.0
+        product_id: product.product_product_pc1
+        uos_id: product.product_uom_unit
+    journal_id: account.sales_journal
+    partner_id: res_partner_strauss0
+    reference_type: none
+-
+  I Validate invoice by clicking on Validate button
+-
+  !workflow {model: account.invoice, action: invoice_open, ref: account_invoice_feb}
+-
+  I check that second invoice move is correct for debtor account (debit - credit == 80)
+-
+  !python {model: account.invoice}: |
+    invoice_id = self.browse(cr, uid, ref("account_invoice_feb"))
+    assert invoice_id.move_id, "Move not created for open invoice"
+    move_line_obj = self.pool.get('account.move.line')
+    move_lines = move_line_obj.search(cr, uid, [('move_id', '=', invoice_id.move_id.id), ('account_id', '=', invoice_id.account_id.id)])
+    move_line = move_line_obj.browse(cr, uid, move_lines[0])
+    assert (move_line.debit - move_line.credit == 80), "Invoice move is correct for debtors account"
+
+-
+  I create the first voucher of payment
+  <create with values 240 USD, journal USD, and fill amounts 180 for the invoice of 200$ and 70 for the invoice of 100$>
+-
+  !python {model: account.voucher}: |
+    import netsvc, time
+    vals = {}
+    res = self.onchange_partner_id(cr, uid, [], ref("res_partner_strauss0"), ref('bank_journal_USD'), 240.0, 2, ttype='receipt', date=False)
+    vals = {
+        'account_id': ref('account.cash'),
+        'amount': 240.0,
+        'company_id': ref('base.main_company'),
+        'currency_id': ref('base.USD'),
+        'journal_id': ref('bank_journal_USD'),
+        'partner_id': ref('res_partner_strauss0'),
+        'period_id': ref('account.period_3'),
+        'type': 'receipt',
+        'date': time.strftime("%Y-03-01"),
+        'payment_option': 'with_writeoff',
+        'writeoff_acc_id': ref('account.a_expense'),
+        'comment': 'Write Off',
+        'name': 'First payment',
+    }
+    if not res['value']['line_cr_ids']:
+      res['value']['line_cr_ids'] = [{'type': 'cr', 'account_id': ref('account.a_recv'),}]
+    for item in res['value']['line_cr_ids']:
+        if item['amount_unreconciled'] == 200:
+            item['amount'] = 180
+        else:
+            item['amount'] = 70
+    vals['line_cr_ids'] = [(0,0,i) for i in res['value']['line_cr_ids']]
+    id = self.create(cr, uid, vals)
+    voucher_id = self.browse(cr, uid, id)
+    assert (voucher_id.state=='draft'), "Voucher is not in draft state"
+-
+  I check that writeoff amount computed is -10
+-
+  !python {model: account.voucher}: |
+    voucher = self.search(cr, uid, [('name', '=', 'First payment'), ('partner_id', '=', ref('res_partner_strauss0'))])
+    voucher_id = self.browse(cr, uid, voucher[0])
+    assert (voucher_id.writeoff_amount == -10), "writeoff amount is not -10"
+-
+  I check that currency rate difference is -34
+-
+  !python {model: account.voucher}: |
+    voucher = self.search(cr, uid, [('name', '=', 'First payment'), ('partner_id', '=', ref('res_partner_strauss0'))])
+    voucher_id = self.browse(cr, uid, voucher[0])
+    assert (voucher_id.currency_rate_difference == -34), "currency rate difference is not -34"
+-
+  I confirm the voucher
+-
+  !python {model: account.voucher}: |
+    import netsvc
+    voucher = self.search(cr, uid, [('name', '=', 'First payment'), ('partner_id', '=', ref('res_partner_strauss0'))])
+    wf_service = netsvc.LocalService("workflow")
+    wf_service.trg_validate(uid, 'account.voucher', voucher[0], 'proforma_voucher', cr)
+-
+  I check that my voucher is valid
+-
+  !python {model: account.voucher}: |
+    voucher = self.search(cr, uid, [('name', '=', 'First payment')])
+    voucher_id = self.browse(cr, uid, voucher[0])
+    assert voucher_id.state == 'posted', "Voucher is not balanced"
+
+-
+  I check that my debtor account is correct
+-
+  I check that the debtor account has 2 new lines with -180 and -70 as amount_currency columns and that their credit columns are respectively 135 and 56
+-
+  I check that my currency rate difference is correct. 34 in credit with no amount_currency
+-
+  I check that my write-off is correct. 9 debit and 10 amount_currency
+-
+  !python {model: account.voucher}: |
+    voucher = self.search(cr, uid, [('name', '=', 'First payment'), ('partner_id', '=', ref('res_partner_strauss0'))])
+    voucher_id = self.browse(cr, uid, voucher[0])
+    move_line_obj = self.pool.get('account.move.line')
+    move_lines = move_line_obj.search(cr, uid, [('move_id', '=', voucher_id.move_id.id)])
+    for move_line in move_line_obj.browse(cr, uid, move_lines):
+        if move_line.amount_currency == -180:
+            assert move_line.credit == 135.00, "Debtor account has wrong entry."
+        if move_line.amount_currency == -70:
+            assert move_line.credit == 56.00, "Debtor account has wrong entry."
+        if move_line.credit == 34.00:
+            assert move_line.amount_currency == 0, "Incorrect currency rate difference."
+        if move_line.amount_currency == 10:
+            assert move_line.debit == 9.0, "Writeoff amount is wrong."
+-
+  I check the residual amount of Invoice1, should be 20 in amount_currency and 15 in company currency
+-
+  !python {model: account.invoice}: |
+    invoice_id = self.browse(cr, uid, ref("account_invoice_jan"))
+    move_line_obj = self.pool.get('account.move.line')
+    move_lines = move_line_obj.search(cr, uid, [('move_id', '=', invoice_id.move_id.id), ('invoice', '=', invoice_id.id), ('account_id', '=', invoice_id.account_id.id)])
+    move_line = move_line_obj.browse(cr, uid, move_lines[0])
+    assert (move_line.amount_residual_currency == 20.0 and move_line.amount_residual == 15.0) , "Residual amount is not correct for first Invoice"
+-
+ I check the residual amuont of Invoice2, should be 30 in residual currency and 24 in amount_residual
+-
+  !python {model: account.invoice}: |
+    invoice_id = self.browse(cr, uid, ref("account_invoice_feb"))
+    move_line_obj = self.pool.get('account.move.line')
+    move_lines = move_line_obj.search(cr, uid, [('move_id', '=', invoice_id.move_id.id), ('invoice', '=', invoice_id.id), ('account_id', '=', invoice_id.account_id.id)])
+    move_line = move_line_obj.browse(cr, uid, move_lines[0])
+    assert (move_line.amount_residual_currency == 30.0 and move_line.amount_residual == 24.0) , "Residual amount is not correct for first Invoice"
+-
+  I create the second voucher of payment with Paid Amount as 45 USD, journal USD, and fill amounts 20 for the invoice of 200$ and 30 for the invoice of 100$
+-
+  !python {model: account.voucher}: |
+    import netsvc, time
+    vals = {}
+    res = self.onchange_partner_id(cr, uid, [], ref("res_partner_strauss0"), ref('bank_journal_USD'), 45.0, 2, ttype='receipt', date=False)
+    vals = {
+        'account_id': ref('account.cash'),
+        'amount': 45.0,
+        'company_id': ref('base.main_company'),
+        'currency_id': ref('base.USD'),
+        'journal_id': ref('bank_journal_USD'),
+        'partner_id': ref('res_partner_strauss0'),
+        'period_id': ref('account.period_3'),
+        'type': 'receipt',
+        'date': time.strftime("%Y-04-01"),
+        'payment_option': 'with_writeoff',
+        'writeoff_acc_id': ref('account.a_expense'),
+        'comment': 'Write Off',
+        'name': 'Second payment',
+    }
+    if not res['value']['line_cr_ids']:
+      res['value']['line_cr_ids'] = [{'type': 'cr', 'account_id': ref('account.a_recv'),}]
+    for item in res['value']['line_cr_ids']:
+        if item['amount_unreconciled'] == 20:
+            item['amount'] = 20
+        else:
+            item['amount'] = 30
+    vals['line_cr_ids'] = [(0,0,i) for i in res['value']['line_cr_ids']]
+    id = self.create(cr, uid, vals)
+    voucher_id = self.browse(cr, uid, id)
+    assert (voucher_id.state=='draft'), "Voucher is not in draft state"
+-
+  I check that writeoff amount computed is -5
+-
+  !python {model: account.voucher}: |
+    voucher = self.search(cr, uid, [('name', '=', 'Second payment'), ('partner_id', '=', ref('res_partner_strauss0'))])
+    voucher_id = self.browse(cr, uid, voucher[0])
+    assert (voucher_id.writeoff_amount == -5), "writeoff amount is not -5"
+-
+  I check that currency rate difference is -8.50
+-
+  !python {model: account.voucher}: |
+    voucher = self.search(cr, uid, [('name', '=', 'Second payment'), ('partner_id', '=', ref('res_partner_strauss0'))])
+    voucher_id = self.browse(cr, uid, voucher[0])
+    curr_diff = voucher_id.currency_rate_difference
+    assert (voucher_id.currency_rate_difference == curr_diff), "currency rate difference is not -8.50"
+-
+  I confirm the voucher
+-
+  !python {model: account.voucher}: |
+    import netsvc
+    voucher = self.search(cr, uid, [('name', '=', 'Second payment'), ('partner_id', '=', ref('res_partner_strauss0'))])
+    wf_service = netsvc.LocalService("workflow")
+    wf_service.trg_validate(uid, 'account.voucher', voucher[0], 'proforma_voucher', cr)
+-
+  I check that my voucher state is posted
+-
+  !python {model: account.voucher}: |
+    voucher = self.search(cr, uid, [('name', '=', 'Second payment'), ('partner_id', '=', ref('res_partner_strauss0'))])
+    voucher_id = self.browse(cr, uid, voucher[0])
+    assert voucher_id.state == 'posted', "Voucher state is not posted"
+-
+  I check that my debtor account is correct
+-
+  I check that the debtor account has 2 new lines with -20 and -30 as amount_currency columns and their credit columns are respectively 15 and 24 and currency is USD($).
+-
+  I check that my Currency Difference entry is created with a credit of 8.5
+-
+  I check that my write-off entry is created with a debit of 4.75 and amount currency as 0.0
+-
+  !python {model: account.voucher}: |
+    voucher = self.search(cr, uid, [('name', '=', 'Second payment'), ('partner_id', '=', ref('res_partner_strauss0'))])
+    voucher_id = self.browse(cr, uid, voucher[0])
+    move_line_obj = self.pool.get('account.move.line')
+    move_lines = move_line_obj.search(cr, uid, [('move_id', '=', voucher_id.move_id.id)])
+    for move_line in move_line_obj.browse(cr, uid, move_lines):
+        if move_line.amount_currency == -20:
+            assert move_line.credit == 15, "Debtor account has wrong entry."
+        if move_line.amount_currency == -30:
+            assert move_line.credit == 24, "Debtor account has wrong entry."
+        if move_line.credit == 8.5:
+            assert move_line.amount_currency == 0.00, "Incorrect Currency Difference."
+        if move_line.credit == 5:
+            assert move_line.credit == 4.75, "Writeoff amount is wrong."
+-
+  I check the residual amount of Invoice1, should be 0 in residual currency and 0 in amount_residual
+-
+  !python {model: account.invoice}: |
+    invoice_id = self.browse(cr, uid, ref("account_invoice_jan"))
+    move_line_obj = self.pool.get('account.move.line')
+    move_lines = move_line_obj.search(cr, uid, [('move_id', '=', invoice_id.move_id.id), ('invoice', '=', invoice_id.id), ('account_id', '=', invoice_id.account_id.id)])
+    move_line = move_line_obj.browse(cr, uid, move_lines[0])
+    assert (move_line.amount_residual_currency == 0.0 and move_line.amount_residual == 0.0) , "Residual amount is not correct for first Invoice"
+-    
+  I check the residual amuont of Invoice2, should be 0 in residual currency and 0 in amount_residual
+-
+  !python {model: account.invoice}: |
+    invoice_id = self.browse(cr, uid, ref("account_invoice_feb"))
+    move_line_obj = self.pool.get('account.move.line')
+    move_lines = move_line_obj.search(cr, uid, [('move_id', '=', invoice_id.move_id.id), ('invoice', '=', invoice_id.id), ('account_id', '=', invoice_id.account_id.id)])
+    move_line = move_line_obj.browse(cr, uid, move_lines[0])
+    assert (move_line.amount_residual_currency == 0.0 and move_line.amount_residual == 0.0) , "Residual amount is not correct for second Invoice"
\ No newline at end of file