Interchange Plus vs Tiered Pricing: An Auditor's View

Interchange plus pricing provides a transparent structure that passes direct card brand costs to the merchant with a fixed markup, whereas tiered pricing groups transactions into buckets—qualified, mid-qualified, and non-qualified—often obscuring true processing costs and inflating margins for the merchant service provider.

Expert Verified & Fact-Checked

• From the Desk of: Chris DuPont a veteran of Merchant Statement Analysis for over 17 years (https://www.merchant-statement-analysis.com/)

• The Data: Everything you see here is updated for March 2026 and cross-referenced with current card brand rates.

• Our Approach: We don't do "guesstimate" quotes. We look at the actual numbers to give business owners the math they need to make the right call for their bottom line.

  
  

What is interchange plus pricing?

Interchange plus pricing, often referred to as cost-plus or pass-through pricing, is a transparent billing model. The processor charges the merchant the exact interchange rate set by the card brands (Visa, Mastercard, etc.) plus assessments and a fixed processor markup.

This model allows for the clearest interchange optimization, as every transaction cost is granularly reported. Because the base cost is separated from the processor's profit, the merchant can easily identify if their markup is being manipulated.

What is tiered pricing?

Tiered pricing categorizes transactions into three primary buckets: qualified, mid-qualified, and non-qualified. When a transaction is processed, the provider assigns it to one of these tiers, each carrying a different rate.

This model is inherently opaque. The provider determines the criteria for each tier, allowing them to shift transactions into higher-cost tiers arbitrarily. This lack of transparency often hides excessive markups that would be immediately visible under an interchange-plus structure.

Why does tiered pricing mask processing costs?

Tiered pricing benefits the processor by reducing the merchant's ability to perform a review or an audit of their merchant statement. By grouping various interchange categories into a single "non-qualified" tier, the processor prevents the merchant from seeing the actual base cost of a specific card type.

Because the merchant only sees a "tiered" rate rather than the underlying interchange cost, they cannot determine if they are paying the fair market price or if they are subject to downgrades that increase the provider's profit at the merchant's expense.

Facts vs. Estimates

Feature	Interchange Plus	Tiered Pricing
Transparency	High	Low
Cost Basis	Actual Interchange	Arbitrary Tiers
Markup Identification	Easy	Difficult
Auditability	High	Low

Follow the Money

Fee Component	Interchange Plus	Tiered Pricing
Interchange	Pass-through (Exact)	Hidden in Tier
Assessment	Pass-through (Exact)	Hidden in Tier
Processor Markup	Separated/Fixed	Combined/Variable

Strategic Shift

Current State	Optimized State
Tiered pricing model	Interchange-plus pricing
Unaudited batch settlements	Monthly interchange reconciliation
Ignoring statement line items	Active fee monitoring

Frequently Asked Questions

Is tiered pricing ever better for a business?

Generally, no. Tiered pricing is designed to maximize processor profit. While some providers may offer a low "qualified" rate, the high costs of mid-qualified and non-qualified tiers typically result in a higher effective rate compared to interchange-plus.

How can I tell if I am on tiered pricing?

Look at your monthly statement. If you see groupings labeled "Qualified," "Mid-Qualified," or "Non-Qualified," you are on a tiered pricing plan. Interchange-plus statements will show specific interchange categories (e.g., "Visa CPS/Retail").

Can I switch my account to Interchange-Plus?

Yes. Most processors can accommodate a move to interchange-plus pricing. If your current provider refuses, it is often an indicator that they rely on the opacity of tiered pricing to maintain higher profit margins.

What is the most common audit error in tiered pricing?

The most common error is the misclassification of transactions into the "non-qualified" tier. Processors may manually or automatically move transactions to this tier to increase their markup without the merchant’s knowledge.

Why is interchange-plus considered the industry standard?

Interchange-plus provides the necessary data for merchants to hold their processors accountable. It aligns the interests of the merchant and the processor by making costs transparent, which is why it is preferred by businesses focused on long-term cost control.