Hello Discourse team, I run a community that would greatly benefit from allowing more than one level of subcategory (e.g., sub-subcategories). Our use case is for a community forum and the current structure is restrictive because we have few sub categories to be created upto 5. If 3 or even 5 levels of nested categories could be supported, it would allow us to build the forum. I’ve seen similar requests from others and would love to see this feature prioritized, even as a plugin. Thank you for considering!

Hi there, I think this already exists :slight_smile: [image]Number of Subcategories You need to have access to the server where Discourse is running. If you’re hosted somewhere, you’ll need to ask whoever is running the server to do this for you. cd /var/discourse ./launcher enter app rails c SiteSetting.max_category_nesting = 3 exit exit

I wouldn’t trust that guy, though! [image] Salma_Quraishi: I run a community that would greatly benefit from allowing more than one level of subcategory (e.g., sub-subcategories). More often, such communities would greatly benefit from using tags. :wink:

Note that while max_category_nesting exists, it only supports up to 3 levels.

How to enable (3+ level) nested subcategories

Product Support

pfaffman (Jay Pfaffman) February 18, 2026, 2:31pm 3

I wouldn’t trust that guy, though!

More often, such communities would greatly benefit from using tags.

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How to enable (3+ level) nested subcategories

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