Stripe fees
Stripe fee calculator for online card payments.
Stripe is often used for subscriptions, digital products, service retainers, and checkout flows. The important thing is not only the percentage, but the fixed fee and any extra markup that applies to your account or region.
Why the fixed fee matters
On a high-value invoice, a 30 cent fixed fee barely matters. On a small digital product, it can change the margin dramatically. That is why a Stripe fee calculator is useful when you price products below about $20.