I'm looking for an extension or customization that allows me to cap a particular customer from ordering over a given amount. For example, a customer cannot checkout if their Order Total is beyond $500.


Magento have revered logic for minimum order amount for order place.

magento have managed from validateMinimumAmount function at class of Mage_Sales_Model_Quote_Address of object of sales address object.

If you have add here some logic then it would be fill you require.

so,Rewrite class of Mage_Sales_Model_Quote_Address using below signtex:


rewrite class is MymoduleNameSpace_Mymodelname_Model_Sales_Quote_Address

class MymoduleNameSpace_Mymodelname_Model_Sales_Quote_Address extends Mage_Sales_Model_Quote_Address
    public function validateMinimumAmount()

    /* call default magento  validateMinimumAmount class */
    /*   i have put static amount */
    /* check here you total cart  base subtotal amont is less then your $amout then you canot checkout */ 
        if ($this->getBaseSubtotalWithDiscount() < $amount) {
        return false;
    return $parentCheck;
  • Thanks for your response. Can this be used to set a maximum order amount by customer? Or is it for all customers? – bonannju Oct 15 '14 at 17:35
  • 1
    It is for all customers. – Fabian Blechschmidt Jul 17 '15 at 6:53
  • Yes,Fabian.I got mistake. I will update it today.Thanks for your feedbackup – Amit Bera Jul 17 '15 at 6:55

Amit has a good start. To have it only for one customer, you need to get the amount from a customer, so here is the way:

  1. create a new customer attribute
  2. use this instead of a hard coded amount:


should work for a new attribute max_amount

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