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Best interest plugins for WordPress

The most popular interest plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. CC Mortgage Calculator leads with 80+ active installs, ahead of Investment Calculator (70+) and Responsive Investment Calculator (20+). All 5 plugins tagged “interest” 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 5 interest plugins

  1. 1.
    CC Mortgage Calculator

    The most installed interest plugin, with 80+ active installs. Only 2 reviews so far, updated 4 months ago.

  2. 2.
    Investment Calculator

    70+ active installs. No reviews yet, last updated 5 years ago. Tested only up to WordPress 5.8.19.

  3. 3.
    Responsive Investment Calculator

    20+ active installs. No reviews yet, last updated 9 years ago. Tested only up to WordPress 4.3.34.

  4. 4.
    CC Savings Calculator

    10+ active installs. No reviews yet, updated 4 months ago.

  5. 5.
    KuLoan Ledger

    Fewer than 10 active installs. No reviews yet, updated 2 months ago.

All 5 plugins tagged “interest”