Post by Johnathan » Tue May 31, 2022 9:57 pm


Current Version: v303.1 (release notes)

OpenCart Versions: 1.5.0.x - 3.0.3.x

To Purchase: Visit OpenCartX or


This modification fixes a rounding bug present in all OpenCart versions. The bug occurs because OpenCart stores prices internally with more than 2 decimal places. When using a non-default currency or applying tax to an order, these percentage-based price adjustments can result in rounding errors because OpenCart only rounds the final values for display (instead of the values stored internally).

  • Upload and go — utilizes ocMod (or vQmod for OpenCart 1.5) so no core file modifications are necessary.
  • Fixes rounding issues for product quantity discounts (i.e. those set up in the Discount tab of the product data) or Special prices with more than 2 decimals.
  • Fixes rounding issues for the "Total" line item due to currency conversions or tax calculations.
  • Automatically affects the cart page, cart module, and checkout pages.
  • Rounded values will be stored in the database once the order is placed, so they will be accurate in the admin panel and order invoice, as well.
  • The extension needs no admin panel since there are no configurable settings. The modification will start working as soon as the ocMod/vQmod file is installed and activated.

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Fri Dec 18, 2009 3:08 am

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