Who this is for
This is for anyone marketing a business on Reddit — founders, growth marketers, community managers — who wants to understand where the actual lines are, versus the informal norms the community enforces on top of Reddit's own rules. Both matter, and they're not the same thing.
Two different rule sets: community norms and Reddit's actual policy
It's easy to conflate "the 90/10 rule" with Reddit's official policy, but they're distinct. The 90/10 rule is a community norm — informal advice that circulates among experienced Reddit marketers, suggesting roughly 90% of your activity in a community should be genuine participation and no more than about 10% self-promotional. It is not an official Reddit guideline, and Reddit does not publish a specific ratio.
Reddit's actual sitewide rule that governs this behavior is Rule 2 of its Content Policy, which requires users to "post authentic content into communities where you have a personal interest, and do not cheat or engage in content manipulation (including spamming, vote manipulation, ban evasion, or subscriber fraud)." That's the enforceable standard sitewide; the 90/10 rule is a practical heuristic communities use to judge whether someone is following it.
On top of both, individual subreddits set their own explicit self-promotion rules — some ban it entirely, some restrict it to a weekly megathread, some require flair or disclosure. Always check a specific subreddit's sidebar or wiki before posting; the Subreddit Rules Checker can help surface these before you post.
Step 1: Build account history before you promote anything
A brand-new account that shows up and immediately links to a product reads as spam to both moderators and AutoModerator, and many subreddits enforce a minimum account age or karma threshold before allowing posts at all. Spend time genuinely participating — commenting, answering questions, contributing without an agenda — before your account is old enough or established enough to promote anything credibly.
Step 2: Disclose your affiliation
When you do mention a product you built or work on, say so plainly. Undisclosed promotion that's later discovered tends to generate a much stronger negative reaction than a disclosed mention, because it reads as deception rather than marketing.
Step 3: Respect per-subreddit variance
Rules vary widely between subreddits covering the same general topic. One subreddit might allow a product mention in a genuinely relevant answer; a neighboring subreddit on a similar topic might ban any commercial link outright. Treat every subreddit as its own rule set, not a copy of the last one you posted in — see how to choose the right subreddit for a fuller evaluation process.
What happens when you don't follow these rules
The consequences typically escalate in stages:
- Post removal: AutoModerator or a moderator removes the specific post or comment. See why Reddit posts get removed for common causes.
- Subreddit ban: repeated violations in one community can get your account banned from posting there specifically.
- Sitewide shadowban: a pattern of spam or manipulation flagged sitewide can result in a shadowban, where your posts and comments stop being visible to others without a clear notice to you.
A realistic example
A founder joins several subreddits related to their industry and spends a few weeks genuinely answering questions with no links. When a thread comes up asking for a recommendation in their exact category, they answer with two or three options including their own, disclose that they built one of them, and check the subreddit's self-promotion rule first (which requires a specific flair for product mentions). The comment stays up and gets engagement instead of being removed.
Common mistakes
- Treating the 90/10 rule as Reddit's official policy instead of a community norm.
- Posting from a brand-new account with no history.
- Never disclosing affiliation with a product being recommended.
- Assuming rules from one subreddit apply identically to a similar one.
- Repeating the same recommendation across many threads — see also how to respond to Reddit recommendation requests for a safer approach to this specific situation.
Checklist before you post
- Does my account have genuine, non-promotional history in this community?
- Have I read this specific subreddit's rules on self-promotion?
- Am I disclosing my affiliation clearly?
- Is this post answering a real, relevant question — not just inserting a link?
- Have I checked whether I've posted something similar elsewhere recently?
Source: Indexly, 'Reddit self-promotion rules: the 90/10 rule explained,' indexly.ai/glossary/reddit-self-promotion-rules; Reddit Inc., Content Policy, redditinc.com/policies/content-policy — both accessed 2026-08-06