Helcim bills our merchants using Interchange Plus pricing, which is widely regarded as the industry's most transparent and affordable billing practice. Your transaction fees are adjusted to reflect the interchange rate for each transaction. Always know exactly what you're being charged for. We tell you our margin and how different transaction types and cards affect the interchange fee. There's no need to call and renegotiate rates because as you process more, Helcim automatically lowers your processing rates based on your three-month volume average.