Start with gross monthly revenue: tier price multiplied by paying patrons. The calculator then subtracts the platform percentage for your plan, estimated per-patron processing, any mixed-currency conversion fee, selected iOS handling, tax on creator fees if you enter one, and the payout fee for your chosen method.
The two inputs that usually change the result fastest are tier price and patron count. Low-price tiers feel more fee-heavy because fixed processing amounts repeat on each payment. Mixed payment methods, non-US PayPal or Venmo, and non-payout-currency members can also widen the gap between gross revenue and net creator pay.
For iOS purchases, choose whether you absorb the App Store fee, raise iOS prices to offset the fee, or exclude iOS purchases from the estimate. This keeps the Patreon fee calculator useful for both current audiences and future pricing experiments.