Creator Platform Fee Calculator

Begin with paid subscribers and their monthly subscription price, not follower count or free subscribers. Each modeled subscriber produces one successful payment per month, and the subscriber base follows the entered net monthly growth rate over the chosen horizon. If annual memberships, one-time purchases, or several currencies have materially different payment sizes and fees, model them separately rather than compressing them into one misleading average.

Taxes collected from customers may pass through the payment flow without belonging to the creator, and providers differ in how fee bases treat tax. Refunds, chargebacks, failed payments, discounts, free trials, and complimentary access also change realized revenue. Use a clean gross amount that matches the chosen fee definitions, then keep excluded adjustments visible beside the result.

A platform percentage and processing percentage scale with revenue. A fixed processing charge scales with transaction count, which makes low-priced memberships more sensitive to payment frequency. A monthly software plan behaves differently again: it is fixed within the modeled plan limits, so its effective percentage declines as revenue grows.

Calculate each component independently. Platform fee equals its applicable base multiplied by the platform rate. Percentage processing uses its documented base and rate. Fixed processing equals successful transactions multiplied by the fixed charge. Add recurring plan cost and any other modeled fixed fee only once. This structure makes it easier to audit a provider statement and avoids applying a percentage to a fee that should be fixed.

Consider an illustrative month with 1,000 successful payments of 8, producing gross processed revenue of 8,000. Assume a 10% platform fee, a 3% processing rate, and a 0.30 fixed processing charge per payment. The modeled deductions are 800 for platform fees, 240 for percentage processing, and 300 for fixed processing, leaving 6,660 before taxes, refunds, conversion, payout charges, or other costs.

The total modeled cost is 1,340, or 16.75% of gross, even though the headline platform rate is 10%. That is not a quote for Substack, Patreon, Ghost, Stripe, or another service. It demonstrates why transaction size matters: collecting the same 8,000 through fewer larger payments would reduce the total fixed-fee component, provided every other rate and customer behavior remained unchanged.

Substack's official help describes a platform share for paid subscriptions plus Stripe processing and recurring billing charges. Patreon's official fee guide distinguishes its standard plan from legacy arrangements and documents payment-method, geography, currency, conversion, and payout considerations. The cited standard 10% Patreon plan applies its USD card rate regardless of payment amount; the micropayment band on the same help page belongs to legacy plans and is intentionally not mixed into this preset. Ghost's managed hosting is sold through fixed subscription plans and advertises no Ghost transaction fee, while payment processor costs and plan limits remain relevant.

These structures can change and existing creators may be governed by a legacy plan that new creators cannot select. Compare the visible presets with the creator's own account and current official plan documentation. Use the common custom processor option only for a controlled like-for-like scenario; it does not turn one rate into a provider quote. Do not apply a new-account baseline to a legacy account, or treat a zero platform transaction fee as zero total cost when hosting and payment processing still exist.

A lower modeled deduction is not automatically a better operating choice. Platforms can differ in audience discovery, email delivery, community tools, media hosting, tax collection, failed-payment recovery, analytics, custom domains, integrations, exportability, and support. Moving can create development work, subscriber churn, deliverability risk, and staff time that the monthly fee formula cannot price reliably.

The calculator assumes that each modeled percentage applies uniformly to the gross base and that each subscriber makes one successful monthly payment receiving the same fixed charge. Real bills may contain tax, different domestic and international payment rates, micropayment pricing, app-store charges, currency conversion, payout fees, tiered plans, minimums, credits, refunds, disputes, failed payments, and fees calculated on a tax-inclusive amount.

The result is an estimate of modeled deductions, not accounting, tax, legal, or platform-selection advice. Reconcile it against a representative provider statement before relying on it. If cohorts have different currencies or fee schedules, calculate each cohort separately and add the net amounts only after converting them under a documented currency policy.

The official fee pages linked below were reviewed on 20 July 2026. Platform plans and payment-processing schedules can change, and provider help pages may distinguish new, legacy, or region-specific accounts. The calculator stores no live price feed, so reopen the relevant official page and the creator's plan settings immediately before a migration or pricing decision.

Refresh the scenario after a plan, payout currency, payment method, membership price, or billing-frequency change. Compare modeled deductions with actual statements at least periodically. A stale fee rate or an omitted fixed payment charge can overwhelm a small apparent difference between platforms.