Which newsletter platform will make you pay first?
Free subscriber limits get most of the attention. In practice, the first bill often arrives because of a workflow: an automation, a paid subscription, an analytics requirement or a list that has finally outgrown the free tier.
Short version: beehiiv’s free ceiling is currently 2,500 subscribers, but its paid tools may become relevant earlier. Kit gives more list-size runway at up to 10,000 free subscribers, while automation depth is the boundary to inspect. Substack does not charge for publishing by list size; its main cost trigger is turning on paid subscriptions.
Start with the job
“Which platform is best?” is too broad to be useful. A better question is: what job must the platform do during the next twelve months?
A writer who wants to publish essays with minimal setup has a different constraint from a course creator building several email sequences. A newsletter business planning to sell sponsorships has another set of needs. The platform that stays free the longest may still be the wrong platform if its free workflow does not match the job.
| Main job | Platform worth investigating first | Constraint to verify |
|---|---|---|
| Build a newsletter-first media business | beehiiv | Which growth, automation and monetization tools require Scale? |
| Use email to sell products, courses or services | Kit | How many sequences and automations will the workflow require? |
| Publish writing with the least operational setup | Substack | Will paid subscriptions make a percentage fee expensive? |
This is a shortlist, not a verdict. Deliverability history, integrations, audience expectations and migration cost can overturn the simple answer.
beehiiv: the trigger may be subscribers or functionality
beehiiv’s Launch plan currently costs $0 and supports up to 2,500 subscribers with unlimited email sends. It also includes the newsletter, website, custom domains, basic analytics and other core publishing tools.
The first payment trigger is not always subscriber 2,501. The current pricing page places email automations, the Ad Network, advanced website analytics and several monetization features on Scale. A new publisher who needs only posts and broadcasts may remain on Launch for a meaningful period. Someone building an automated funnel or using the platform’s native monetization system may need Scale much earlier.
The practical beehiiv question is therefore:
Will the list reach 2,500 first, or will a Scale feature become operationally necessary first?
That distinction matters because paying early for possible future growth is different from paying to remove a measured bottleneck.
Kit: more free list-size runway, with a workflow boundary
Kit’s current Free plan supports up to 10,000 subscribers. It includes unlimited forms, landing pages and email broadcasts, along with tagging, segmentation and the ability to sell digital products and subscriptions.
That makes Kit’s headline free allowance generous for creators who mainly need broadcasts and list capture. The part to inspect is automation. Kit’s current documentation distinguishes a basic welcome automation from the broader automation and sequence functionality on paid plans. If several sequences, branching journeys, rules or more advanced integrations are central to the business, the paid-feature boundary can arrive well before the list reaches 10,000.
The useful Kit question is:
Can the next ninety days run on broadcasts and one simple welcome path, or does the business already depend on a more complex lifecycle?
Substack: the cost begins when revenue begins
Substack currently charges no publishing fee based on subscriber count. That makes the free-to-publish path easy to understand. The cost model changes when paid subscriptions are enabled: Substack takes 10% of each paid transaction, and Stripe fees also apply.
A revenue share has one obvious advantage at the start: when paid revenue is zero, the percentage platform fee is zero. The trade-off is that the platform cost rises with revenue.
At $500 in monthly paid-subscription revenue, a 10% platform share is $50 before Stripe. At $1,000, it is $100. At $5,000, it is $500. That does not automatically make a fixed-fee platform better—Substack’s network, conversion experience or simplicity may still create more value—but it makes the fee visible.
For a fixed platform bill of $49 per month, the direct break-even with a 10% revenue share is $490 in monthly revenue:
$49 ÷ 10% = $490
Payment processing, subscriber tiers and feature differences must be added before making a final decision.
Four situations, four different answers
Starting with no audience
Stay free until publishing cadence and reader demand exist. The immediate constraint is usually consistency, not software capacity.
A product business with a welcome funnel
Inspect Kit’s automation boundary and beehiiv’s Scale features. A larger free list allowance is less important if the required sequence cannot run.
A writing-first paid publication
Substack offers a low-friction start. Model the 10% share at the revenue level you are genuinely targeting, not at today’s zero revenue.
A newsletter intended to become a media business
Check growth, advertising, referral and analytics features. Paying earlier may be rational when the feature is part of the revenue engine rather than a cosmetic upgrade.
The decision sequence
- Write down the platform’s job for the next twelve months.
- Estimate the list size you can realistically reach.
- List the automations and monetization features needed in the next ninety days.
- Calculate fixed fees, revenue share and payment processing at a realistic paid-revenue level.
- Check export, migration and domain ownership before committing.
- Choose the platform whose first constraint arrives latest—or whose paid constraint clearly earns back its cost.
What cannot be decided from pricing pages
No comparison table can predict inbox placement, subscriber conversion or how much a platform’s internal network will help a specific publication. Nor can it know how expensive a future migration will feel once forms, automations and billing are connected.
The purpose of this guide is narrower: identify the first likely constraint, expose the fee model and prevent “free” from becoming the only decision criterion.
Sources and disclosure
Plan and fee facts were checked on 3 September 2026 against the official beehiiv pricing page, Kit Free plan guide, Kit Visual Automations guide, Kit pricing page and Substack fee guide.
The beehiiv link below is an affiliate link. A qualifying purchase may generate a commission at no additional cost to the buyer. Kit and Substack are assessed using the same constraint-first framework.