Platform Fee

The percentage a newsletter platform takes from your paid subscription revenue.

Platform fees are charges on paid subscription payments, on top of Stripe processing (~2.9% + $0.30). Substack: 10%. Beehiiv: 2.9%. Kit: 3.5%. InfluencersKit: 0%. At $5,000/month subscription revenue, the difference between 10% ($500/mo) and 0% ($0/mo) is $6,000/year — compounding as revenue grows. Always factor platform fees into platform selection alongside base subscription pricing.