Substack's 10% cut costs one operator $7,500 a year
Mid-morning in a London co-working space, the spreadsheet is open, the coffee’s gone cold, and the numbers won’t lie: $500 gone every month, $7,500 a year, to a platform fee that compounds the better you perform.
The platform fee that gets more expensive as you succeed
One newsletter operator hit $5,000 monthly revenue and realized Substack was taking more than their rent.
Substack takes $500 from a creator earning $5,000 a month—that’s $7,500 a year, and there’s no loyalty discount as you grow, they just take more. Every paid subscriber costs you 13% right off the top: 10% to Substack and 3% to Stripe, which means a $7 subscriber nets you just over $6. The model is designed to feel invisible at first—who notices 10% when you’re making $200?—but at scale it becomes the single largest line item after your own labour.
One operator crossed $3,000 monthly revenue and opened a spreadsheet to calculate exactly what they were paying—Substack’s platform fees alone cost around $390 every month, not counting Stripe transaction fees on top. For a newsletter with 500 paying subscribers at $10 a month, Substack’s 10% works out to $750 a month more in the creator’s pocket if you switch to a platform with zero revenue share. Beehiiv takes no cut from subscription revenue—you only pay Stripe’s processing fee of 2.9% plus $0.30 per transaction, and one migrated operator saved over $7,000 in six months compared to what they would have paid Substack.
TACTIC
The open rate metric privacy broke
Apple’s Mail Privacy Protection preloads images on devices, including the tracking pixel that measures opens—this happens whether someone reads your email or not, which means reported open rates might look inflated without reflecting real engagement, and if you suddenly saw open rates jump without more clicks or sales, Apple’s privacy features are likely why. Open rate is a leading indicator, not a revenue indicator—if your open rate is 28% but your revenue per subscriber is growing, you’re winning, because revenue sustainability beats vanity metrics. A 3%–8% click rate on total subscribers is strong, and even a 0.5% reply rate can indicate a highly engaged audience.
FROM THE ARCHIVE
The referral programme structure that actually compounds
The most effective newsletter referral programmes offer milestone rewards—1 referral gets bonus content, 5 get an exclusive resource, 25 gets merch. Morning Brew gives subscribers free rewards tiers where the more referrals you make, the more swag you can unlock, while cross-promotion with newsletters that have similar audiences but aren’t competitors is one of the most effective growth tactics because you’re reaching a pre-qualified, email-engaged audience. A healthy list growth rate is 2–5% per month net after unsubscribes—for a list of 1,000, that’s 20–50 new subscribers monthly.
WORTH NOTING
What publishing newsletters actually open at in 2026
Publishing newsletters from news outlets or content publishers can expect 20% to 30% open rates, while newsletters built around authority and depth like investing, business, or career strategy should aim for 30%+ consistently. A 25% open rate on a 200,000-subscriber list can be extremely healthy, while a 25% open rate on a 1,000-person highly targeted B2B list might be disappointing. A strong email open rate typically sits between 28% and 35% in 2026, but context—list size, niche, send cadence—matters more than the benchmark itself.
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