Affiliate disclosure: this article contains affiliate links for Kit and beehiiv (the site’s beehiiv link is still being set up — the marker reserves its place). Substack has no affiliate program for creators referring creators. Every price and fee below is from published pages and independent reviews, checked October 2026.
Here is the equation that decides this comparison: Substack takes 10% of your paid revenue, forever, with no way to buy it down. beehiiv takes 0% and charges a flat monthly plan. Kit charges a flat plan scaled to your list size. Past some revenue number, the 10% fee overtakes the flat subscription — and from that point on, Substack is the most expensive option here no matter how “free” it felt at the start.
The 2026 pricing, documented
| Plan | Price | Subscribers | Notes |
|---|---|---|---|
| Kit Newsletter (free) | $0 | Up to 10,000 | Unlimited broadcasts, forms, landing pages; limited automations |
| Kit Creator | $39/mo monthly ($33/mo annual) | 1,000 | Scales with list size (~$59 at 3k, ~$89 at 5k, ~$139 at 10k) |
| beehiiv Launch (free) | $0 | Up to 2,500 | No paid subscriptions on free |
| beehiiv Scale | $49/mo monthly (~$43/mo annual) | From 2,500 | Steps up by bracket (~$77/mo just past 2,500 on annual) |
| beehiiv Max | $109/mo monthly (~$96/mo annual) | Higher brackets | Removes branding, more publications |
| Substack | $0 | Unlimited | 10% of every paid transaction; Stripe ~2.9% + $0.30 + ~0.7% billing fee; $50 one-time custom domain |
Kit’s commerce transaction fee on product and paid-newsletter sales is reported at roughly 0.6% in a September 2026 review, down from older documented rates — treat Kit’s own help docs as the source of truth. The tables below use 0.6% and say so.
The fee math: what you keep
Assumptions, stated up front: a $6/month newsletter, 8% of free subscribers converting to paid, Stripe at 2.9% + $0.30 per payment. beehiiv on the Scale plan; Kit on Creator at the matching list size.
At 1,000 subscribers → 80 paid → $480/month revenue:
| Platform cost | Payment fees | You keep (approx.) | |
|---|---|---|---|
| Substack | $48 (10%) | ~$38 Stripe + ~$3.36 billing fee | ~$391 |
| beehiiv (Scale $49/mo) | $49 | ~$38 Stripe | ~$393 |
| Kit (Creator $39/mo) | $39 + ~$2.88 commerce fee | ~$38 Stripe | ~$400 |
At this scale it is nearly a tie. Substack’s 10% costs $48 — barely more than beehiiv’s flat $49. At 1,000 subscribers, choose on features and workflow, not fees.
At 10,000 subscribers → 800 paid → $4,800/month revenue:
| Platform cost | Payment fees | You keep (approx.) | |
|---|---|---|---|
| Substack | $480 (10%) | ~$379 Stripe + ~$34 billing fee | ~$3,907 |
| beehiiv (Scale ~$99/mo at this bracket) | ~$99 | ~$379 Stripe | ~$4,322 |
| Kit (Creator $139/mo) | $139 + ~$29 commerce fee | ~$379 Stripe | ~$4,253 |
Now the flip is obvious. Substack costs roughly $890/month in combined fees versus beehiiv’s $480 — about $415 less every month, or nearly $5,000 a year, at the same revenue. Kit lands in between. The crossover: beehiiv’s flat fee beats Substack’s 10% once monthly paid revenue passes roughly $500–1,000, depending on tier.
Where each platform actually wins
The fee math is decisive at scale, but not the whole decision. Each platform answers a different question.
Kit wins on automation. The visual automation builder is why creators pick Kit: tag-based segmentation, multi-step welcome sequences, link-triggered funnels, and a native commerce layer for selling digital products. If your list is a marketing machine — lead magnets, nurture sequences, course launches — Kit is the strongest tool here. Its weakness is discovery: no reader network, no recommendation engine. Growth is your job.
beehiiv wins on monetization infrastructure. Zero platform fee on paid subscriptions, a built-in ad network, paid recommendations, referral programs, and the strongest analytics of the three (attribution, cohorts, revenue dashboards). If your newsletter is the business — paid subs plus sponsors — beehiiv is purpose-built for it. Its weakness is automation depth: sequences and segmentation work but trail Kit clearly.
Substack wins on zero-friction start and discovery. No plan to choose, no monthly bill, unlimited subscribers, and the reader network — recommendations, Notes, the app — can deliver subscribers you would never reach alone. For writers whose growth depends on being discovered, that network is the product. Its weakness is the fee math above, plus the thinnest analytics and automation of the three.
The migration decision: when to switch
Stay on Substack while: paid revenue is under ~$500/month (the fee costs less than a flat plan), the recommendation network is a meaningful share of your growth, and you value zero setup over control. Audit the network’s contribution: if recommendations drive under 10% of new subscribers, you are paying a 10% revenue tax for discovery you are not getting.
Migrate to beehiiv when: monthly paid revenue passes ~$1,000 (the fee gap is now real money), you want the ad network and sponsorship tooling, or you want analytics that show where subscribers come from. Both beehiiv and Kit offer free migrations — subscriber lists, paid-subscriber Stripe handoff, and post archives transfer, because Stripe keeps the customer relationship. The friction is DNS, custom domains, and notifying readers. Budget one to three weeks.
Choose Kit when: your list exists to sell things beyond subscriptions — courses, coaching, digital products, launches — and automation sequences are the engine. Kit’s free 10,000-subscriber tier is also the cheapest place to validate a list before paying. Trade-off: Kit’s subscription management is commerce-bolted-on rather than native, so weigh that if recurring subs are the whole business.
One last note on lock-in: migrating a paid audience anywhere costs some churn no matter how smooth the tooling. The cheapest migration is the one you never need — an argument for starting on the platform you expect to be on at 10,000 subscribers, not the one that is free today.
FAQ
Is Substack really free?
Publishing is free at any list size. The moment readers pay you, Substack takes 10% of every transaction plus Stripe processing (~2.9% + $0.30) and Stripe’s ~0.7% recurring-billing fee. “Free” is accurate until monetization — then it becomes the priciest option here at scale.
At what revenue does beehiiv beat Substack?
Roughly $500–1,000/month in paid subscription revenue, depending on your beehiiv tier. At $4,800/month revenue (800 paid at $6), beehiiv keeps about $415 more in your pocket every month than Substack.
Can I migrate paid subscribers from Substack to beehiiv without losing them?
Yes — this is a solved problem. Both beehiiv and Kit offer free migrations including the Stripe handoff for paid subscribers, so billing continues without readers re-entering payment details. Expect one to three weeks for DNS, archives, and redirects.
Why would anyone pick Kit over beehiiv for a newsletter?
Automation. If your list drives a business beyond subscriptions — courses, coaching, launches — Kit’s visual automation builder, tagging, and sequences are meaningfully stronger. Kit’s free tier (10,000 subscribers) is also the cheapest way to validate a list.
Does beehiiv really take 0%?
Of paid subscription revenue, yes — 0% platform fee, unchanged through 2026. You still pay Stripe’s processing fees and beehiiv’s flat monthly subscription. “0%” means no revenue share, not no costs.
Which platform is best for a solo founder just starting out?
Start where the friction is lowest for your model: Substack for discovery and zero setup, Kit’s free plan for automation and a 10k-subscriber runway, beehiiv’s free Launch plan if you plan to monetize. The expensive mistake is staying on the wrong one past the crossover.
Methodology
No accounts were created and no newsletters were sent for this article. All prices come from published pages and independent reviews, checked October 2026: Kit’s plans via pricing reviews updated September 2026 (Newsletter free to 10,000 subscribers; Creator from $39/month monthly, $33 annual, at 1,000 subscribers, scaling with list size); beehiiv’s plans via a breakdown verified against beehiiv’s live page on October 9, 2026 (Launch free to 2,500; Scale from $49/month monthly, ~$43 annual; Max from $109, ~$96 annual; 0% platform fee); Substack’s fees via guides reading Substack’s own fee page in August 2026 (10% platform fee, unchanged in 2026; Stripe ~2.9% + $0.30; ~0.7% recurring-billing fee; $50 one-time custom domain). Kit’s commerce fee is reported at ~0.6% in a September 2026 review, down from older documented rates — flagged as unconfirmed. Affiliate terms: Kit pays 50% of referred revenue for 12 months, then 10–20% at partner tiers; beehiiv pays 50% → 55% → 60% across tiers for 12 months, 60-day first-click cookie, with referrals getting a 14-day trial plus 20% off three months. Fee tables use simplified assumptions stated in the article; Stripe fees vary by card mix and country. Verify live prices before committing.
AWL verdict: Start free anywhere — all three let you. But know your crossover number before you grow into it: once paid revenue passes roughly $1,000/month, Substack’s 10% becomes a monthly donation you could keep. beehiiv is the rational home for newsletters that are the business (0% fee, ad network, real analytics); Kit is the rational home for lists that feed a business (best automation, free 10k runway); Substack is the rational home for writers whose growth genuinely comes from its network — and only for as long as the network out-earns its tax.
Sources
- Kit (ConvertKit) pricing plans and scaling, updated September 2026
- Kit pricing tiers and feature comparison
- beehiiv pricing verified against the live pricing page, October 9, 2026
- Newsletter platform fee structures and fee math (beehiiv 0%, Substack 10%, Kit commerce fee), verified September 2026
- Substack fee breakdown from Substack’s own fee page (August 2026)
- Substack 10% platform fee and Stripe fee structure
- beehiiv vs Substack vs Ghost revenue comparison (July–August 2026 vendor pricing)
- Affiliate program rates — Kit 50%/12mo with tier residuals, beehiiv 50–60%/12mo
- beehiiv partner program tiers (Bronze 50%, Silver 55%, Gold 60%)
