diff --git a/application/views/configs/general_config.php b/application/views/configs/general_config.php
index ea95753e4..49f99b886 100644
--- a/application/views/configs/general_config.php
+++ b/application/views/configs/general_config.php
@@ -77,7 +77,7 @@
 					<?php echo form_input(array(
 						'name' => 'default_origin_tax_code',
 						'id' => 'default_origin_tax_code',
-						'class' => 'form-control input-sm',
+						'class' => 'form-control input-sm text-uppercase',
 						'value'=>$this->config->item('default_origin_tax_code'))); ?>
                 </div>
             </div>
diff --git a/application/views/taxes/form.php b/application/views/taxes/form.php
index fb927e264..44e73495d 100644
--- a/application/views/taxes/form.php
+++ b/application/views/taxes/form.php
@@ -10,7 +10,7 @@
 				<?php echo form_input(array(
 						'name'=>'tax_code',
 						'id'=>'tax_code',
-						'class'=>'form-control input-sm',
+						'class'=>'form-control input-sm text-uppercase',
 						'value'=>$tax_code)
 						);?>
 			</div>