Square requires a minimum payment amount in a CreatePayment request before the payment request is processed. This minimum amount varies by payment type and supported country.
Cash payment and external payment minimums
|Country||Minimum payment for cash/external payments|
|Australia||Cash: $0 (amount can only be specified in increments of $0.05.) External: $0|
|Canada||Cash: $0 (amount can only be specified in increments of $0.05). External: $0|
Afterpay minimums and maximums
|Country||Minimum payment||Maximum payment|