By default inb WHMCS, changing the pricing of products & services in the product configuration area will not affect existing clients. They remain at the prices they agreed to at the time of signing up.

However, if you want to apply price increases to your existing clients too, then this addon utility, Bulk Pricing Updater, allows you to do that:

• Goto (Setup/Addon Modules)
• install the Bulk Pricing Updater addon
• configure access rights and save

This addon is now available by (Addons/Bulk Pricing Updater)