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Free Plugin by SIEL Acumulus v8.7.0

Acumulus

The Acumulus plugin connects your Woocommerce store to the Dutch SIEL Acumulus online financial administration application.

Acumulus

The facts

Rating
4.7★ from 26
Active installs
200+
Price
Free
Last updated
4 Nov 2025
Added
Jan 2016
Requires WP
5.9
Tested up to
WP 6.8.8
Requires PHP
8.1
Downloads
33,570

Our analysis

AI-assisted

Acumulus is a WordPress plugin designed to connect your WooCommerce store with the SIEL Acumulus online financial administration application. It automates the process of adding invoices to your financial administration, reducing the need for manual entry and minimising errors.

The plugin reacts to order status changes and features four admin screens for managing settings and batch sending invoices. It also provides a meta box on the order edit screen to show the status of invoices in Acumulus. This plugin is intended for users who have both WooCommerce and a SIEL Acumulus account.

Best for: This plugin is suitable for WooCommerce store owners using SIEL Acumulus for financial management.

What it does well

  • ✓Automates invoice management for WooCommerce stores
  • ✓Includes four admin screens for settings and batch sending
  • ✓Displays invoice status directly on the order edit screen
  • ✓Does not interfere with the front-end user interface

Where it falls short

  • •Requires a SIEL Acumulus account to function
  • •Installation may be complex for non-developers

Verdict

Acumulus offers a practical solution for automating invoice management in WooCommerce, but it is only useful for those with the necessary accounts and technical setup.

From the developer

SIEL Acumulus's own description of Acumulus, lightly tidied.

Over deze plugin.

WooCommerce boekhouden plugin voor Acumulus

The Acumulus plugin connects your Woocommerce store to the Dutch SIEL Acumulus online financial administration application. It can add your invoices automatically or via a batch send form to your administration, saving you a lot of manual, error-prone work.

The Acumulus plugin:

  • Reacts to order status changes via actions.
  • Does have 4 admin screens: a register, settings, advanced settings, and a batch send screen.
  • Offers a meta box with an overview of the status of the invoice in Acumulus on the edit order screen.
  • Does not in any way interfere with the front-end UI.

The Acumulus plugin assumes that:

If not, this plugin is useless and will not do anything.

Installation using composer and GitHub

Note: this is only recommended for developers, not if you only want to use this plugin in your webshop.

  1. Open a cmd prompt and go to the plugins folder: cd wp-content/plugins
  2. Download the zip from https://github.com/SIELOnline/Acumulus-for-WooCommerce, either:
    • The latest version: https://github.com/SIELOnline/Acumulus-for-WooCommerce/archive/refs/heads/master.zip
    • A specific version, e.g.: https://github.com/SIELOnline/Acumulus-for-WooCommerce/archive/refs/tags/7.6.5.zip
  3. Extract the zip and rename the folder Acumulus-for-WooCommerce-[master|7.6.5] to acumulus
  4. cd acumulus
  5. composer update –no-dev

Note this won’t install the test classes from WooCommerce and WordPress that are required by our own tests.
Installing the test environment for this plugin is yet to be described here.

Support

See the Acumulus forum.

Read the full description on the official page →

Tagged as

purpose eCommerce & Online Store
platform WooCommerce
audience Developers
topic Administration Store Online Https Http

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