"5 Million Paid Subscriptions" Is a March 2025 Number. Everyone Selling You a Membership Still Quotes It.

The statistic that gets quoted at you every time someone tells you to turn your course into a membership is a year and a half old.

Substack announced it had five million paid subscriptions in March 2025. The company said it had crossed the mark for the first time, just four months after announcing four million. That jump was the moment the "recurring revenue is inevitable" story hardened into received wisdom.

It is still the number. As of September 12, 2026, Substack presents itself as a platform with "5 million paid subscriptions and counting."

The milestone that never arrived

Media analyst Simon Owens noticed what the round-ups didn't. Substack had been adding roughly a million paid subscriptions a year before the March 2025 announcement, which made five million look like acceleration. Then a year passed without a six-million announcement, which "suggests to me that growth is decelerating."

Absence of a press release is not proof of a plateau. But it is the opposite of what the membership-pitch crowd implies when they cite the figure.

Meanwhile the internet did what the internet does. A widely circulated claim that Substack crossed 8.4 million paid subscriptions in Q1 2026 "has no traceable primary source", according to a 2026 statistics audit that named it and refused to publish it. The same audit notes that the five-million headline is a March 2025 milestone, not a 2026 figure.

The platform's own ambition runs the other direction. Co-founder Hamish McKenzie, quoted in Mack Collier's newsletter, said he doesn't "see anything in the laws of physics that should prevent Substack from getting to more than 50 million paid subscriptions." Ten times current levels, versus an analyst reading stall. Pick your prior.

The part that should actually scare you

Numbers argue. A working writer describes.

In June, Satya Robyn — a writer, psychotherapist and Buddhist teacher who has written ten books — told her paying subscribers she was changing the deal. From September, she would stop promising them extra content. Paid readers would become patrons rather than customers in a "you give me this money, I give you these pieces" exchange.

Two reasons. Falling subscriptions, which she said she didn't think was personal but something writers across Substack were experiencing. And this: "the internal pressure I put on myself to 'deliver value'... sucks my energy and cramps my creative process."

That second one is the line nobody puts on the sales page.

The reframe

A course is a product. You build it, you sell it, you're done owing anything to the buyer.

A membership is a delivery contract with no end date. Every month you owe something new to people who can cancel in two clicks, and the pressure to keep earning the charge lands on the same person who has to make the work.

The conversion math is not on your side either. Median free-to-paid newsletter conversion is 0.62%, per beehiiv's State of Paid Newsletters 2026, with the top quartile converting 2 to 5%. The 5-10% figure the category popularised describes best performers, not typical outcomes.

So before you retire the course: the headline number you were sold on is from March 2025, the follow-up milestone hasn't landed, and one of the writers inside the machine just told her own audience she'd rather have patrons than obligations.