Fees

A fee is taken from a payment when it settles and sent to the fee’s address. The customer pays the payment link’s price; fees come out of what the merchant receives.

Server fees and app fees

• Server fees, created with the root key outside any app, apply to every app’s payments on that chain. Use them to charge the apps you host. Apps can see them but not change them.
• App fees, created inside an app, apply only to that app’s payments. Use them to split revenue, for example with a partner.

Fields

Field	Description
Label	Your name for it, such as “Platform fee”.
Chain	Fees are per chain, and in its settlement token.
Type	Fixed: an amount of the settlement token. Variable: a share of the payment in basis points, 100 being 1%.
Value	The amount or the basis points.
Minimum	Optional. The fee is never less than this.
Maximum	Optional. The fee is never more than this.
Conditions	Optional. When the fee applies; empty means always.
Fee address	Where the fee goes. Defaults to the chain’s settlement address.

Fixed amounts, minimums and maximums are in the settlement token’s smallest unit through the API, and in whole tokens in the dashboard.

Conditions

A fee can apply only when a payment matches every condition you set:

Subject	Can be
Customer ID	is, is one of
Customer trait	is, is one of
Source token	is, is one of
Target token	is, is one of
Source amount	is, is more than, is at least, is less than, is at most

For example, charge 1% except for customers whose tier trait is gold, or a flat fee only on payments under a certain amount.

Limits

A payment can carry up to 10 fees. A quote is refused if its fees would add up to more than the amount it settles for.