How is a percentage fee different from a flat subscription?
A percentage grows with every order you take; a flat subscription does not. At 1%, a merchant doing twice the volume pays twice as much for the same service, so the gap widens exactly as the business grows.
Where do these provider rates come from?
Each provider's own published pricing page, read on 2026-08-25. They are entry rates — what a merchant below the first volume threshold pays — because several are tiered, and quoting the best band would understate what a smaller merchant is actually charged.
Why are BTCPay Server and a plain wallet address not in this table?
Because both take 0% of payment value, and putting them here would imply Unheld undercuts them on fee, which it does not. What separates them is self-hosting and payment operations, and that argument belongs on their comparison pages rather than in an arithmetic table.
What does Unheld charge?
A flat monthly subscription based on how many transactions you take, and none of the payment value. The plan cost does not move when your order values do.