Karma is Reddit's trust currency. Without it, your posts get filtered, your links get removed, and your account looks like a bot. This guide covers exactly how to build karma quickly and ethically, which subreddits to use, which strategies work, and what the key milestones are for marketers.
Karma is more nuanced than a simple upvote counter. Understanding the mechanics helps you build it more intelligently.
Earned when other users upvote your link posts or text posts. Post karma has a higher ceiling per submission but is harder to earn consistently since posts compete in subreddit feeds.
Note: Reddit fuzzes karma numbers to prevent vote manipulation. Your displayed count is approximate, not exact.
Earned when your comments receive upvotes. Comment karma is the more important signal for trust. Accounts with high comment karma relative to post karma look like genuine community participants.
Strategy: Prioritize building comment karma first. It is faster, safer, and more trusted by moderators.
Each milestone unlocks new capabilities. Know exactly what you can do at each stage.
Can comment freely in most subreddits. Some subs require 1 karma minimum.
Can post text content in most subreddits. Link posts still risky.
Can post links in most subreddits. Spam filters less aggressive. AutoMod allows through on most subs.
Significantly less spam filter scrutiny. Can self-promote within the 9 percent rule. Most mods treat you as a legitimate member.
Can post in restricted and gated subreddits. Community trust is high. Promotional posts receive much better organic reception.
These six subreddits offer the highest karma-per-effort ratio. Use them alongside your niche subreddits.
r/AskReddit
42M+ members
Answer trending questions early. Sort by "New" to find questions with no top answer yet. Write the most thorough, entertaining first reply.
r/explainlikeimfive
22M+ members
Write the clearest, simplest explanation of a technical topic. If you genuinely understand your field, this sub rewards expertise generously.
r/todayilearned
36M+ members
Share a genuinely surprising fact with a credible source. The more counterintuitive the fact, the higher the karma ceiling.
r/mildlyinteresting
24M+ members
Relatable observations about everyday objects or situations earn fast engagement. Commenters love adding context, which keeps posts active.
r/Showerthoughts
4M+ members
Witty, abstract observations about life earn high karma here. The shorter and more mind-bending, the better. One-sentence posts regularly hit the front page.
r/LifeProTips
22M+ members
Practical, actionable tips that save time or money earn mass upvotes. Must be genuinely useful and not already well-known. Check for reposts before submitting.
Comment karma is the fastest and safest karma to build. Follow this exact process to maximize upvotes on every comment.
Sort by "New" in your target subreddit
New posts have zero or few comments. Being first with a great answer means all incoming traffic sees your comment first. This is the single highest-leverage action you can take.
Write the most helpful, detailed first answer
Do not write one sentence. Write 3 to 5 sentences that genuinely answer the question, add context, and anticipate follow-up questions. Quality comments earn 10x more karma than brief replies.
Add context or information others missed
Look at existing comments and find the angle nobody covered yet. Unique angles earn upvotes even in threads that already have top comments because readers see something new.
Reply to top comments for secondary visibility
Top comments get the most eyes. Replying to a top comment with something genuinely additive puts you in front of the same audience. Even 5 to 10 upvotes on a reply compounds over time.
Post during morning hours EST when voting volume is highest
Reddit voting volume peaks between 8am and 12pm EST on weekdays. A comment posted in this window with early upvotes will receive algorithmic boosting for the rest of the day.
These five behaviors not only prevent karma growth, they actively damage your account standing.
Low-effort one-liner comments
Comments like "great post" or "this" get downvoted in most subreddits. They signal you are farming karma without adding value, which is the exact profile Reddit flags.
Posting in the wrong subreddit
Off-topic posts get downvoted and removed quickly. Mass downvotes damage your karma immediately and may result in a posting cooldown on that subreddit.
Arguing with or insulting other users
Combative comments get downvoted by the community and reported to moderators. Even if you are factually correct, being hostile costs you more karma than it earns.
Reposting content that already exists
Reddit users aggressively downvote reposts. Before posting, search the subreddit for your content. Many subs have bots that auto-detect and remove reposts.
Self-promotion without community value
Posts that are transparently promotional with no value for the reader get mass downvoted and reported. This damages both your karma and your account trust score simultaneously.
There is a clear line between strategic karma building and abusive farming. Crossing it does not just risk your account. It also produces worse marketing results.
Result: Karma that converts. Communities trust you. Promotional posts perform better.
Result: Account shadowban, permanent suspension, and zero marketing results even before the ban.
1000+
karma before targeting competitive marketing subreddits
9%
maximum self-promotion rate per Reddit guidelines
3:1
minimum comment-to-post ratio for account health
30 days
account age required by most link-posting subreddits
MediaFast monitors your karma score, self-promotion ratio, and account standing in real time. It calculates exactly when you hit each milestone and tells you which subreddits you can now post in. Stop guessing. Know exactly where you stand.
Try MediaFast FreeEverything marketers need to know about building and using Reddit karma effectively.
Most experienced Reddit marketers recommend a minimum of 500 karma before any self-promotion, and ideally 1000 or more before targeting competitive marketing or startup subreddits. More important than the raw number is the self-promotion ratio: your promotional posts should never exceed 9 percent of your total post history. Quality of karma matters too: 500 karma from niche-relevant comments is worth far more than 5000 karma from r/FreeKarma4U.
It counts toward your displayed karma total, but Reddit's internal scoring system devalues karma earned from known karma farming subreddits. Spam detection algorithms can identify accounts that have karma concentrated in a small number of farming subs. Worse, some subreddits explicitly check posting history and will remove posts from accounts with obvious farming patterns. Use high-engagement subreddits like r/AskReddit instead.
Yes. Comment karma can go negative if your comments receive more downvotes than upvotes. Post karma can also go negative. A negative karma account faces heavy posting restrictions on most subreddits and is almost impossible to use for marketing. If your karma goes negative, stop posting and focus exclusively on writing genuinely helpful comments in active communities until you recover.
Karma is displayed as a single total on your profile, not broken down by subreddit. However, different subreddits carry different weight for trust purposes. Karma earned in a relevant niche subreddit (e.g., r/entrepreneur for a SaaS founder) signals much stronger credibility to both moderators and Reddit's algorithms than the same number of karma points from unrelated subs.