Switch plan · free calculator
What is your newsletter platform really costing you?
Substack takes 10 percent of paid revenue forever. Kit raised prices in September 2025. Mailchimp’s free plan shrank to 250 contacts. Put in your numbers and see your own yearly figure against the platforms creators actually move to, priced from their own pages (verified June 14, 2026, re-checked weekly).
Paid link disclosure: your plan may end with one partner link. OwnLetter may earn a commission at no extra cost to you; it never enters the math. How we make money
1 · Your platforms
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You are considering
2 · Your numbers
Billing
3 · Your result · free
$984per year by moving to Beehiiv
Substack$1,920/yr10% of revenue
Beehiiv$936/yrScale · 5K subs
Kept in your pocket, year after year
$984
Year 1
$1,968
Year 2
$2,952
Year 3
At your current numbers; growth not modeled.
14-day trial + 20% off for 3 months
Paid link · OwnLetter may earn a commission at no extra cost to you. It never enters the math.
Prices from the platforms’ own pages, verified 2026-06-14, re-checked weekly. Stripe processing fees apply on both sides and wash out.
How this calculator works
Both sides run through the same resolver: the live published price of the cheapest plan that fits your total list size, plus any fee on paid revenue (Substack charges 10 percent of paid subscriptions, Kit 0.6 percent; most others charge none). Stripe processing applies on both sides and washes out.
When your current platform is cheaper at your numbers, we say so. The migration checklist and contract flags come from our published reviews and terms-of-service analysis, with their sources. How we test →