Substack Tests Brand-Funded Access to Paid Content
Oct 13, 2026New sponsorship formats could help publishers earn revenue while introducing free readers to paid subscriptions. The early experiment also points to a broader strategy for subscription platforms.
What if a brand paid for readers to try your subscription? Substack is testing that idea through new sponsorship formats announced October 8. One allows a brand to fund a month of paid access for a publisher's free subscribers, while another lets a sponsor pay to open an individual article that would normally sit behind a paywall.
For publishers, the potential is appealing. They could earn sponsorship revenue while giving readers an opportunity to experience content they normally charge for. Some of those readers might eventually become paying subscribers, although Substack hasn't released results showing whether that happens.
The formats are being tested with a small group of publishers and brands. They're part of Substack's broader effort to help publishers earn money from the audiences they've built on its platform.
How the New Sponsorships Work
Substack introduced three formats, each offering a different way for brands to support content.
- The Upgrade allows a brand to fund one month of access to a publisher's paid subscription for free subscribers. Readers can experience the paid offering without paying for that month, then decide whether to subscribe themselves.
- The Unlock lets a sponsor pay to make an individual paid article available to everyone. The publisher receives compensation, and readers who haven't subscribed can see content that would otherwise remain behind the paywall.
- The Masthead brings together work from several writers around a common theme, with a brand sponsoring the collection. Substack suggests examples such as retailers supporting gift guides or travel companies sponsoring travel writing.
The Upgrade has the clearest connection to subscription acquisition. It gives free readers more time with the paid product, while the publisher receives sponsorship support. The Unlock offers a smaller introduction through a single piece of content.
Both create opportunities to reach potential subscribers, but the financial arrangements and results haven't been disclosed.
Can Sponsored Access Lead to Paying Subscribers?
Publishers have long offered free trials and introductory discounts to encourage readers to subscribe. Giving people access to premium content can help them decide whether the product is worth paying for, but the publisher generally carries the cost of that introductory period.
Substack's Upgrade format introduces another potential source of funding.
For a publication with a large free audience, the arrangement could be attractive. Those readers have already shown interest in the publication but haven't committed to paying. A sponsored month gives them an opportunity to experience more of the content, while the publisher may earn revenue from the sponsorship.
There are two possible sources of value for the publisher: the sponsorship payment and any new paying subscribers who come from the experience. Receiving sponsored access doesn't mean a reader has become a paying customer. The sponsorship payment could make a campaign worthwhile even if relatively few readers convert. New paying subscribers could increase its long-term value.
But we don't yet know how those economics will work.
Substack hasn't disclosed publisher compensation formulas, conversion results or how readers will be invited to continue when their sponsored access ends. It also hasn't explained how sponsored access will be counted in subscriber reporting.
Those questions will be important for publishers deciding whether to participate.
Substack Is Building on Its Sponsorship Program
Substack expanded its native sponsorship program in June, helping publishers connect with brands interested in reaching their audiences. The new formats build on that effort by allowing sponsorships to support access to paid content.
Publishers can express interest through Substack's Creator Kit, which provides information about their publication and audience to potential brand partners. Creator Kits are currently available to Substack Bestseller publications with at least 100 paid subscribers.
Having a Creator Kit doesn't guarantee participation. Substack is still testing the new formats with selected publishers and brands, and says publishers can choose whether they want to participate.
The company also says publishers retain control over their editorial work. For qualifying larger campaigns, Substack is offering measurement through Kantar to help sponsors evaluate brand awareness and audience response.
Substack hasn't announced when the formats will become widely available or what publishers can expect to earn. For now, the program remains an early experiment rather than an established source of subscriber growth.
Insider Take
Substack is testing whether sponsorships can help publishers earn more money while introducing readers to paid content. A brand-funded month could give readers a reason to try a subscription they haven't purchased, while providing income to the publisher during the introductory period.
There's a larger platform strategy here. Substack is finding more ways to connect the publishers, readers and brands already using its service. If those connections help publishers attract customers and earn additional revenue, Substack becomes more valuable to the businesses that depend on it.
We're seeing related approaches from Kajabi and beehiiv, which have introduced advertising networks that help customers reach new audiences and earn revenue. Their programs work differently from Substack's sponsor-funded access, but they share an important business opportunity: using an existing network of customers to create more value for those customers.
For subscription platforms, that can provide another reason for customers to stay. A publisher that earns meaningful sponsorship revenue or acquires paying subscribers through its platform has more to consider before moving elsewhere.
There is a trade-off for the publisher, however. As more revenue and audience growth come through the platform, the publisher may become increasingly dependent on it.
The opportunity for subscription platforms is to become more valuable by helping their customers grow. The question for those customers is whether the additional income and audience opportunities justify a deeper dependence on the platform.
Substack's new sponsorship formats raise two questions for publishers: What makes readers willing to pay once their sponsored access ends, and how can you tell whether those readers become valuable subscribers? These Member Center resources help operators examine both sides of that decision.
Research into what makes readers willing to pay for content and what can weaken its perceived value. Use it to examine whether your premium offering gives readers a compelling reason to continue paying after a sponsored month or introductory promotion ends.
An assessment for comparing the quality and value of subscribers acquired through different channels. It can help publishers evaluate whether sponsored-access campaigns produce paying subscribers who stay, rather than relying on the number of readers who initially receive free access.
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