Substack is an online publishing platform that lets writers, journalists and other creators run an email newsletter, website, podcast and video channel from one account and charge readers for paid subscriptions. Among creator platforms, it is the best-known example of the subscription newsletter model, in which the audience pays the creator directly instead of the creator relying on advertising.
Substack was founded in 2017 and earns money by taking a 10 percent share of paid subscription revenue, while publishing to free subscribers costs nothing. Its central promise is audience ownership: the creator keeps the email list and the payment relationship and can export both. Over time, Substack has added a reader app, a social feed called Notes, recommendations between publications and live video, which moves it from a pure newsletter tool toward a creator network.
How Substack works for a publisher
Substack works as a hosted publishing stack: the creator writes a post once, and the platform delivers it by email, publishes it on a web page and shows it in the app. Each publication receives its own address on the platform or a custom domain, an archive of posts, a subscribe page and a dashboard with subscriber and revenue data.
Readers sign up for free with an email address. The creator can then enable paid subscriptions, usually with a monthly price, a discounted annual price and an optional higher founding member tier. Payments run through the card processor Stripe, which charges its own processing fee in addition to Substack’s share. Each post can be public, free for subscribers or paywalled, and a paywalled post can show a preview to encourage upgrades.
The main building blocks of a publication are summarized below.
| Feature | What it does | Why it matters |
|---|---|---|
| Email newsletter | Delivers each post to subscriber inboxes | Direct reach without an algorithm |
| Web publication | Hosts posts, archive and about page | Search visibility and sharing |
| Paid tiers | Monthly, annual and founding member plans | Recurring revenue from readers |
| Podcast and video | Hosts audio and video posts and feeds | Several formats in one place |
| Notes | Short-form social feed inside the app | Discovery beyond the own list |
| Recommendations | Publications suggest each other at sign-up | Cross-promotion between writers |
| Chat and live video | Community threads and live sessions | Closer contact with paying readers |
Substack economics and fees
Substack uses a revenue share model rather than a software subscription. The publisher pays nothing until readers pay; after that, Substack keeps 10 percent of paid subscription revenue, and the payment processor deducts a separate fee per transaction. This makes the platform inexpensive to start but proportionally more expensive as revenue grows.
Revenue depends on two variables: the number of free subscribers and the paid conversion rate, meaning the share of free readers who upgrade. Conversion rates differ strongly by niche and by how much exclusive value paid posts offer, so a small, specialized publication can earn more than a large general one.
| Factor | Typical lever | Effect on income |
|---|---|---|
| Free list size | Recommendations, Notes, guest posts | Larger pool of potential payers |
| Paid conversion rate | Exclusive posts, paywall placement | More payers from the same list |
| Price point | Monthly versus annual pricing | Revenue per paying reader |
| Churn | Consistent schedule and quality | Retained recurring revenue |
| Platform fee | Fixed 10 percent share | Lower net income at scale |
Substack compared with other creator platforms
Substack competes with platforms that also let creators earn from direct audience payments, but they differ in pricing logic and focus. The comparison below shows the main alternatives.
| Platform | Main focus | Pricing logic | Discovery network |
|---|---|---|---|
| Substack | Newsletters, podcasts and writing | Share of paid revenue | Strong, through app and Notes |
| beehiiv | Newsletter growth and ads | Monthly software plan | Moderate, through referrals |
| Patreon | Memberships for many media | Share of membership revenue | Limited |
| Ko-fi | Tips, shop and memberships | Free plan or flat upgrade | Limited |
| Self-hosted newsletter | Full control of site and data | Hosting and software costs | None built in |
The key trade-off is simplicity and network effects versus cost and control. Substack offers a ready audience network and almost no setup, while a flat-fee tool such as beehiiv becomes cheaper once paid revenue is high, and a self-hosted setup gives the most design freedom.
Using Substack effectively
Successful Substack publications combine a clear editorial promise with a predictable publishing rhythm. Readers subscribe to a specific benefit, such as weekly analysis of an industry or in-depth essays on one subject, and the consistency of delivery often matters more than frequency.
- Define the paid value: decide what is free and what is behind the paywall before launch.
- Use recommendations: partner with publications that serve a similar audience.
- Post on Notes: short updates bring readers from inside the app to the newsletter.
- Offer an annual plan: it improves cash flow and reduces monthly churn.
- Keep the list exportable: download subscriber data regularly as a backup.
Limitations and risks of Substack
Substack’s convenience comes with limits on design, fees and platform dependence. Although the email list can be exported, growth that comes from the in-app network does not move with the creator, so leaving the platform can reduce discovery.
| Limitation | Practical impact | Typical response |
|---|---|---|
| Limited customization | Publications look similar | Strong voice and custom domain |
| Percentage fee | High absolute cost at large revenue | Compare flat-fee tools at scale |
| Network dependence | Growth tied to the app | Build other channels too |
| Email deliverability | Some posts land in promotions tabs | Ask readers to save the sender |
Another recurring debate concerns content moderation policies, which some writers and readers consider too permissive and others welcome. Creators who choose Substack should review these policies, because the platform’s reputation becomes part of their own publication brand.
In plain words
Substack is a place where a writer can start their own small magazine delivered by email. Readers sign up, and new articles arrive in their inbox and in the app.
If the writer wants, readers can pay a monthly fee for extra articles, and Substack keeps a small share. The important idea is that readers support the writer directly, much like subscribing to a favorite magazine, instead of the writer depending on advertisements.
A real-world example
A former trade journalist starts a Substack about the logistics industry. She publishes one free weekly briefing and one paid in-depth analysis each week, priced at a monthly fee with a discounted annual option. Recommendations from two related publications and regular Notes bring steady sign-ups.
After a year and a half, she has about 12,000 free subscribers, and roughly 6 percent pay. After the platform share and processing fees, the newsletter covers her full-time income. The outcome is an independent publication that she controls, with a subscriber list she can take elsewhere if her needs change.