diff --git a/addons/account_voucher/account_voucher.py b/addons/account_voucher/account_voucher.py
index 32e8f79777f..cb4d702a750 100644
--- a/addons/account_voucher/account_voucher.py
+++ b/addons/account_voucher/account_voucher.py
@@ -384,7 +384,7 @@ class account_voucher(osv.osv):
                 for line in voucher.line_ids:
                     for tax_line in tax_pool.compute_all(cr, uid, tax, line.amount, 1).get('taxes', []):
                         total_tax += tax_line.get('amount', 0.0)
-                total += total_tax
+                    total += total_tax
             else:
                 for line in voucher.line_ids:
                     line_total = 0.0
@@ -427,9 +427,9 @@ class account_voucher(osv.osv):
                     tax = tax_pool.browse(cr, uid, taxes, context=context)
 
                 if not tax[0].price_include:
-                    for tax_line in tax_pool.compute_all(cr, uid, tax, voucher_total, 1).get('taxes', []):
+                    for tax_line in tax_pool.compute_all(cr, uid, tax, line_amount, 1).get('taxes', []):
                         total_tax += tax_line.get('amount')
-                        total += total_tax
+
             voucher_total += line_amount
         total = voucher_total + total_tax