Unreal Themes

Apply Coupons to Custom taxonomies using the Woo Coupons System. 
Discount type of Coupon must be the “Fixed cart discount”. 
Download the zip folder and upload it as normal WordPress Plugin. 
This plugin adds the ability to select one or multiple taxonomies including products categories, tags and custom taxonomies and applies the coupon

Woo Custom Taxonomies Coupons

Thanks @romchyk16 for this plugin. Like @abisewski I was unable to get this to work and have spent a couple of hours debugging it. Despite an invalid coupon being present for my custom taxonomy, it was still being applied. Why was this?

Well, the plugin runs on the woocommerce_coupon_is_valid_for_product filter. This was not being run because the coupon was set for a percentage or fixed cart discount. The filter that this plugin runs on only applies to a Fixed Product Discount.

So, please update the plugin with an instruction that the coupon 
Discount type needs to be Fixed Product Discount.

Thanks, all working now :)

Excellent plugin, needs more instructions

Apply Coupons to Custom taxonomies using the Woo Coupons System.

Amaury Balmer

WordPress 3.1 and up allow for reasonably simple custom taxonomy, this plugin makes it even simpler, removing the need for you to write any code.
Add support for taxonomy with or without hierarchical. Choose the selector type for write post.
Allow to add taxonomy to any objects registered on your installation. This plugin can be coupled with the plugin ACF to a new term meta database that allow to create on fly any field need for the taxonomy. For example, for a “Number” taxonomy, you can add fields : number ID, date of parution, screenshot, etc !
This plugin is developped on WordPress 3.5, with the constant WP_DEBUG to TRUE.
This plugin allows you to add taxonomy just by giving them a name and somes options in the backend. It then creates the taxonomy for you, takes care of the URL rewrites, provides a widget you can use to display a “taxonomy cloud” or a list of all the stuff in there, and it allows you to show the taxonomy contents at the end of posts and excerpts as well. 
To boot, it comes with a set of template tags for those who don’t mind adapting their own theme.
For full info go the <a href="https://github.com/herewithme/simple-taxonomy" rel="nofollow ugc">Simple Taxonomy</a> page.

Simple Taxonomy

WordPress 3.1 and up allow for reasonably simple custom taxonomy, this plugin makes it even simpler, removing the need for you to write any code.

Woo Custom Taxonomies Coupons vs Simple Taxonomy