Is switching newsletter platforms worth it?

What a switch is worth is the gap, not the price

A pricing page tells you what a platform costs. It cannot tell you what moving to it is worth, because that is the difference between two bills — and differences are usually smaller than the numbers they come from. Take a 15,000-subscriber list with 750 paid subscribers at $10/month, $7,500/month gross, and price it everywhere we can quote at that size, as an all-in monthly cost and as a share of gross revenue: Buttondown at $581.50/month (7.75%), Ghost at $583.50/month (7.78%), Kit at $628.33/month (8.38%) and Substack at $1,245/month (16.6%). Each figure adds plan fee, revenue share and payment processing together, from published pricing verified as of 2026-09-15.

Buttondown is cheapest at $581.50/month, on its Advanced plan. But look at how close the three platforms that charge a plan fee here are: Buttondown at $581.50, Ghost at $583.50 and Kit at $628.33 — $2/month between the first two and $46.83/month across the whole group. Substack charges no plan fee at this size, which is why its position in that list has nothing to do with plan pricing and everything to do with what it takes from each subscription. Turn that into what a move is worth and the table reads like this: Substack to Buttondown, $663.50/month; Kit to Buttondown, $46.83/month; Ghost to Buttondown, $2/month.

One move is worth more than the others put together

Substack to Buttondown saves $663.50/month — $7,962 a year — more than 14 times the next-best move, Kit to Buttondown at $46.83/month. That is not a quirk of this list size. Substack takes 10% of every subscription on top of processing, and the others lead with a plan fee and take much less per subscription — $1.66 of a $10 subscription against $0.59 on Buttondown. So the gap between those two models grows with every subscription you sell, while the gap between one plan fee and another is capped at the difference between two brackets. Switching between flat-fee platforms moves a fixed amount of money. Switching off a revenue share moves a fraction of everything you earn.

So the first question is not which platform is cheapest but which side of that line you are on. If you are on a revenue share and your paid base is growing, the saving is large, durable and gets larger. If you are already on a plan fee, you are arguing over $46.83/month or less, and the rest of this page is about why that is rarely worth the disruption. The mechanics of the two models are in flat fee or revenue share, the per-subscription arithmetic is in newsletter payment processing fees, and your own numbers go in the calculator.

A switch is paid for in subscribers, not dollars

Moving platforms costs you something no pricing page lists: some of your readers do not come with you. Paid subscribers have to re-authorise payment or be migrated by support, annual subscribers hit the change mid-term, and people who signed up for a publication on one platform do not always want it on another. You cannot look that number up — it depends on your list and how you handle the move — but you can compute the number it has to stay under. Each paid subscriber on Buttondown nets you $9.41/month at $10/month after its fees, so a move is worth making only if it survives the subscribers it costs.

Run each move against that test. Substack to Buttondown saves $663.50/month and breaks even after 70 lost paid subscribers — 9.33% of the paid base; Kit to Buttondown saves $46.83/month and breaks even after 4 lost paid subscribers — 0.53% of the paid base; Ghost to Buttondown saves $2/month and cannot survive losing a single one: one cancelled subscription costs $9.41 a month, about 4.7 months of the saving.

That is the whole argument against the small moves. Ghost to Buttondown is inside the noise — it would need a migration that costs you nothing at all to come out ahead, and migrations are not free. The $663.50/month move is different in kind: it can lose 70 paid subscribers, 9.33% of the base, and still be ahead after a year. When a saving is that much larger than the risk, the fee arithmetic is genuinely telling you to move; when it is not, treat platform features and your own time as the deciding factors instead. The move-by-move detail lives in the switching guides — Substack to Kit, Substack to Ghost, Substack to beehiiv and Substack to Buttondown — and the mirror image, moving toward a revenue share, is in Kit to Substack.

The answer has a shelf life, and a margin of error

The ranking above is true at one list size and changes at the next. Kit's free plan runs to 10,000 subscribers and can sell paid subscriptions, so at exactly that size, with 500 paid subscribers at $10/month, Kit is cheapest at $325/month and a Substack publisher's best available move is worth $505/month. One subscriber later, Kit moves onto its Creator plan, the cheapest option becomes Buttondown at $434/month, and the best move open to that same Substack publisher is worth $396 to a different destination — $109/month less than it was one subscriber earlier. A switch takes weeks to carry out and is awkward to reverse, so price it at the size you expect to be, not the size you are; the subscriber counts where your newsletter bill jumps maps where those lines fall.

Two honesty notes on the table itself. Buttondown comes out cheapest here by $2/month, and its data is marked partial: its tier prices are read from its own pricing page, but its annual-billing discount is unconfirmed, it has historically sold features as paid add-ons, and its paid-subscription support is recorded as available on its paid plans rather than confirmed plan by plan — the first two could each be larger than that margin, and the third is what the whole scenario rests on. Its published ladder also ends at 20,000 subscribers. Treat a win that size as a tie and choose on something else — Buttondown pricing explained sets out what is and is not confirmed. And beehiiv is absent from every figure above because its plan pricing is verified directly only to 2,500 subscribers, so quoting it at 15,000 would mean publishing a number we have not confirmed; beehiiv pricing explained covers what we do know. The profiles behind every figure are Substack, Ghost, Kit and Buttondown, with sources on the methodology page.

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