Interchange plus pricing is widely considered the most transparent and cost-effective model compared to tiered and blended alternatives. Here is how it compares across key areas:

Transparency and Structure: Interchange plus functions as a cost-plus model, itemizing the base interchange fee set by card networks and adding a fixed processor markup. In contrast, tiered pricing bundles fees into broad categories (qualified, mid-qualified, and non-qualified) that can obscure the true cost of a transaction. Blended models use a simple flat rate but offer the lowest transparency, masking variations in costs.

Cost Implications: Interchange plus provides wholesale rates that lead to significant savings for high-volume businesses. For example, a credit card retail transaction under interchange plus might total 2.2% + $0.10, whereas a tiered model might charge 2.6% + $0.10 and a blended model 2.9% + $0.30. Blended models often overcharge on low-risk debit transactions, while interchange plus passes along lower regulated debit rates.

Best Use Cases: Interchange Plus: Best for businesses with varied transaction types and higher volumes, such as restaurants and retail stores seeking predictability and lower margins. Tiered: Best for simple, low-volume merchants who prioritize basic categorization. Blended: Common for high-risk or online-only businesses that prefer a single flat fee regardless of card type.