Free calculator
Platform fee calculator
A cheap plan with high transaction fees can cost more than a pricier plan once you're selling. Enter each plan's current rates from the provider's pricing page and see your real cost.
Monthly fees at — revenue
Choosing the cheapest plan saves up to — a year versus the most expensive at this volume.
Compare platformsHow to read your effective fee rate
Effective fee rate = (plan price + payment fees + transaction fees) ÷ revenue. It's the single number that makes plans comparable. At low volume, the monthly price dominates, so free or cheap plans win. As volume grows, percentage fees dominate, and plans with lower processing rates pull ahead.
Hidden costs to add
- Paid apps and plugins (often charged monthly)
- Currency conversion and cross-border card fees
- Chargeback fees
- Premium theme licences and renewals
- Hosting, security and backups for self-hosted stores
Next: plug your margin into the profit margin calculator.