Switching from Buttondown to Kit: what happens to your fees

The free tier isn't really comparable

Buttondown's free plan covers only the first 100 subscribers, and it can't sell paid subscriptions — so even a small, unmonetized list moves you onto a paid Buttondown tier fast. Kit's free Newsletter plan covers up to 1,000 subscribers and, unusually for a free tier, it can sell paid subscriptions too. Take a 500-subscriber list with no paid subscriptions at all: Buttondown's Basic plan costs $9/month just to exist above its 100-subscriber ceiling, while Kit costs $0.

That gap alone is reason enough for a lot of small lists to move. The fuller picture — what happens once you turn on paid subscriptions on both sides — is below, and it doesn't all point the same direction. See each platform's full ladder in Buttondown pricing explained and Kit pricing explained, or the side-by-side at Buttondown vs Kit.

Under 1,000 subscribers, Kit usually wins even after you monetize

Turn on paid subscriptions on a 500-subscriber list, with 30 paying $8/month ($240/month gross). Buttondown's Basic plan costs $24.96/month all-in (10.4% of gross) — its flat fee plus Stripe processing, since Buttondown takes 0% of revenue itself. Kit's free plan costs $17.40/month (7.25%) — no plan fee, just the Kit Commerce fee. Kit is $7.56/month cheaper.

That holds for almost any realistic conversion rate. On a full 1,000-subscriber list at $8/month per subscriber, Kit stays the cheaper platform until about 188 paid subscribers convert — roughly 18.8% of the list paying. Very few newsletters convert that high a share of subscribers to paid, so in practice, inside Kit's free ceiling, Kit is the cheaper place to run a small paid newsletter than a paid Buttondown plan.

Above 1,000 subscribers, Buttondown's 0% take rate wins it back

Once your list clears Kit's free tier, both platforms charge a plan fee — and now Kit's 3.5% + $0.30 Kit Commerce fee (payment processing included) rides on every dollar of subscription revenue, while Buttondown still takes 0% and you pay only Stripe's standard processing. At 5,000 subscribers with 300 paying $10/month ($3,000/month gross), Buttondown's Standard plan runs $206/month (6.87%) against $269.17/month (8.97%) on Kit's Creator (up to 5,000 subs) plan — moving to Kit costs $63.17/month more.

That gap holds fairly steady as the list grows, because it's driven by the commerce fee on revenue rather than the plan brackets. At 10,000 subscribers with 500 paid, Kit costs $66.83/month more than Buttondown's Professional plan. At 20,000 subscribers — the top of Buttondown's published ladder — with 800 paid, Buttondown's Advanced plan is still $66.50/month cheaper than Kit's Creator (up to 20,000 subs) plan. Buttondown's 0% take rate is the whole reason: it never grows with revenue, and Kit's does.

What the fee math doesn't price

If Buttondown is cheaper past the free tier, why move at all? Because the two tools aren't really competing on the same axis. Buttondown is built for simplicity — a clean API, a minimal editor, no growth features to configure. Kit is built around creator marketing: automations, tagging, landing pages, and a Creator Network for discovery, all bundled under the same 3.5% + $0.30 commerce fee. If you actually need that tooling, paying $63.17–$66.50/month more for it is a reasonable trade — just make it deliberately, not because you assumed a bigger platform is automatically cheaper.

Two things worth checking directly before you commit: Buttondown has historically sold some features as paid add-ons rather than bundling them into the tier price, so confirm what's actually included at your target tier — the caveat is on the Buttondown profile. And verify your paid subscribers can move from your own Stripe account (Buttondown's setup) into Kit Commerce without forcing re-entry of card details, since it's a different payment rail. Every fee figure above traces to the Buttondown and Kit profile pages, with sources on the methodology page. If you're comparing Kit against a revenue-share platform instead, see switching from Substack to Kit; figures reflect published pricing verified as of 2026-07-25.

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