Substack fee changelog
Verified against the official pricing page. Open the Substack calculator.
Initial verification from Substack's help-centre article "How much does Substack cost?" (no platform-stated last-updated date) and its Publisher Agreement at substack.com/pa. Confidence medium: the Publisher Agreement corroborates the Revenue Share + Payment Processor fee mechanism but not the specific 10%, 2.9% + $0.30 or 0.7% figures, which come from the help-centre article alone.