OneStepCheckout is a easy extension for your magento stores. Your customers will no more experience a complicated check out process with numerous steps. The process is now simplified from six steps to single step. The conversion rates are relatively higher when a onestepcheckout extension is used.The customers can quickly fill in the personal information and payment methods and complete the purchase. This extension provides an Ajax update feature for different shipping and payment methods for different country and different region. This extension also excludes all unnecessary fields in billing and shipping information. Since a single page is involved, the customers can make changes in the information updated at any point of time before checkout.