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Best client invoices plugins for WordPress

The most popular client invoices plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Smart Invoice and Billing Management Plugin leads with 10+ active installs, ahead of Wicked Invoicing (fewer than 10). All 2 plugins tagged “client invoices” are below, with figures from WordPress.org that update every day.

Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.

Research this niche or see all plugins.

Top 2 client invoices plugins

  1. 1.
    Smart Invoice and Billing Management Plugin

    The most installed client invoices plugin, with 10+ active installs. Only 2 reviews so far, last updated 11 years ago. Tested only up to WordPress 4.2.39.

  2. 2.
    Wicked Invoicing

    Fewer than 10 active installs. No reviews yet, updated 10 months ago. Tested only up to WordPress 6.9.11.

All 2 plugins tagged “client invoices”