To test: - create a manual invoice on a patron account in the amount of $1.005 - verify that the charge saves successfully - verify that amount due shows as $1.01 on patron record - use a report to see that accountlines.amount is 1.005 - try to pay off charge - verify Koha will not allow payment of $1.01, gives error "You must pay a value less than or equal to 1.00" - verify that Koha will not allow you to enter a payment or writeoff amount of $1.005 I'm not sure if the better answer here is to block creation of fees in fractions of a cent or allow payment/writeoff of fees in fractions of a cent, but the mismatch is an issue. Confirmed behavior of 18.11, 19.05, and master