I am using event observer on checkout page for modifying grandTotal on checkout page config.xml

<?xml version="1.0"?>




class Ranosys_SpecialPrice_Model_Observer {

public function paymentmethod(Varien_Event_Observer $observer) 
    $method = $observer->getEvent()->getMethodInstance();
    $quote = $observer->getEvent()->getQuote();
        Mage::log(var_export($quote->debug(), TRUE), null, 'order.log');
    return $this;

When I check order.log it is showing round of value of grand total but it is not showing on checkout page. How can I show changed grand total on checkout page.

  • Try to use this event "controller_action_predispatch_checkout_onepage_savePayment" – Asheem Patro Jan 16 '17 at 6:37
  • Check this link also stackoverflow.com/questions/4363876/… – Asheem Patro Jan 16 '17 at 6:40
  • Do I just need to change event name or something else @AsheemPatro – Ramkishan Suthar Jan 16 '17 at 6:41
  • After using this event it is not moving from payment information tab in checkout page – Ramkishan Suthar Jan 16 '17 at 6:43
  • Check my answer and use a parent::collect(); then only you will be able to edit the grand total. – Asheem Patro Jan 16 '17 at 6:47

You can do it by using a collector after the


and set the grandTotal using setGrandTotal.

Check this link for reference you can just use the collector for updating only grand total. Reference

  • in this case grand total will modify in every case plz see my code I need to change granttotal when payment method is cash on delivery. – Ramkishan Suthar Jan 16 '17 at 6:51

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