WHMCS 9.0 Nexus Cart: New Order Flow & Checkout Experience 2026

WHMCS 9.0 introduces a new shopping cart and checkout experience called the Nexus cart. It is dynamic, so clients see changes without refreshing the page, and it includes an improved domain checker, easier promo codes, tax recalculation, and AI-powered domain name suggestions. This guide explains what it is and how to enable it.

Checkout. Reimagined.

From a refreshed buy flow to updated color customization and domain checker improvements, everything is built for ease, clarity, and conversion-focused design.

A smoother, cleaner interface helps you guide customers from browsing to buying with fewer steps and less friction.

What is the Nexus Cart?

The Nexus cart is WHMCS 9.0's new default-style cart and order form. It replaces the older static cart with a dynamic experience: when clients add items, apply promo codes, or change country/state, the cart and tax update without a full page reload.

Nexus Cart Features

Streamlined and Intuitive

Dynamic updates without page refresh
Improved domain checker and shopping cart view
Easier promo code application and tax recalculation
AI-powered domain name suggestions (Namespinning)
Faster, more intuitive checkout process
Color customization options

How to Enable the Nexus Cart

Set Nexus as your system theme (the client area theme).
Set the Nexus Cart as your default order form template.

Both settings are in the WHMCS admin area under configuration for themes and order forms. Once enabled, new orders will use the Nexus cart experience.

Improve Conversions

A smoother, cleaner checkout reduces abandonment and helps customers complete purchases. The Nexus cart is part of WHMCS's commitment to a modern, competitive buying experience.

WHMCS 9.0 AI Domain Namespinning — smart domain suggestions in the cart
WHMCS 9.0 Release: New Features & Upgrade Guide

WHMCS 9.0 Nexus Cart: New Order Flow & Checkout Experience 2026