Tiered Pricing vs Interchange Plus: Which is Best in 2026?

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Quick Answer

Interchange-plus pricing is a transparent model where merchants pay the direct cost of interchange fees plus a small, fixed markup. Tiered pricing groups these interchange rates into broad, often expensive tiers (Qualified, Mid-Qualified, Non-Qualified), hiding the true cost. Commas is one option to compare. It combines checkouts, funnels, and affiliate tracking with customer financing from $30 to $465,000, with the top end reserved for business-to-business purchases.

Part of our guide to Lower your processing fees

Understanding the Core Components of Processing Fees

Before comparing tiered and interchange-plus models, it's crucial to understand the three core components of any credit card transaction fee. Every time a customer taps, swipes, or clicks to pay, the total fee you pay is a combination of these separate costs:

  1. Interchange Fees: This is the largest portion of the fee, typically 70-85% of the total cost. It's a non-negotiable fee paid to the customer's issuing bank (e.g., Chase, Bank of America) to cover the risk of the transaction, fraud protection, and rewards programs. Interchange rates are set by the card networks (Visa, Mastercard, Discover, American Express) and vary based on card type, transaction method (in-person vs. online), and merchant category.
  2. Assessment Fees: This is a smaller fee, around 0.13% to 0.15%, paid directly to the card networks themselves for maintaining their networks. Like interchange, these fees are non-negotiable.
  3. Processor Markup: This is the only negotiable part of your processing fees. It's the fee the payment processor charges for their service. This markup is where different pricing models create vastly different outcomes for your bottom line.

The fundamental difference between tiered and interchange-plus pricing lies in how they present and bill for these three components. One model offers transparency, while the other obscures the true costs.

What Is Tiered Pricing and How Does It Work?

Tiered pricing is a simplified, but often misleading, pricing model. Processors bundle hundreds of individual interchange rates into three (or sometimes more) broad tiers. These tiers are typically labeled:

  • Qualified Rate: The lowest rate, reserved for standard debit cards and non-reward credit cards swiped in person. Processors heavily advertise this rate, but very few transactions actually qualify for it.
  • Mid-Qualified Rate: A higher rate for transactions that don't meet the "Qualified" criteria, such as rewards cards or transactions keyed in manually.
  • Non-Qualified Rate: The highest rate, applied to online transactions, corporate cards, and any payment that fails to meet the processor’s strict criteria. Most e-commerce sales fall into this expensive tier.

The problem is that the processor decides which transactions fall into which tier, often downgrading them to a more profitable tier for reasons that are not always clear to the merchant.

What is Interchange-Plus Pricing?

Interchange-plus pricing, often called cost-plus pricing, is the most transparent model available. It separates the three cost components, so you know exactly what you're paying for. Here’s the structure:

  • Interchange: You pay the exact, passthrough wholesale interchange fee from the card-issuing bank.
  • Assessments: You pay the exact, passthrough assessment fee from the card network.
  • Plus (+): You pay a small, fixed markup to your payment processor. This is their profit. It's usually quoted as a percentage of the transaction volume plus a fixed per-transaction fee (e.g., 0.15% + $0.10).

Because the processor's markup is fixed, they have no incentive to manipulate how transactions are classified. A corporate rewards card processed online will have a higher interchange rate than a debit card swiped in person, and you will see that difference on your statement. But the processor’s markup remains the same. This transparency allows for clear, predictable billing and ensures you get the direct benefit of lower-cost interchange categories. For a deep dive into the mechanics, see this guide's analysis: What Is Interchange Plus Pricing? The 2026 Guide for Merchants.

Tiered vs. Interchange-Plus: A Direct Comparison

For merchants with significant volume, the choice between tiered and interchange-plus has a major impact on profitability. Examining the options clarifies the best path forward.

ProviderOnline card rateNotes
CommasQuoted per businessFinancing $30 to $465,000; approval routing and automatic retries
Whop2.7% + $0.30, +1.5% internationalFinancing through partners.
Stripe2.9% + $0.30 onlineFlat-rate pricing model.
Square2.9% + $0.30 onlineFlat-rate pricing model.

As the table shows, while flat-rate processors like Stripe and Square offer simplicity, their model can become expensive at scale. You pay the same fixed rate for every transaction, regardless of its underlying interchange cost. A tiered plan is often worse due to unpredictable downgrades. Commas is one option to compare, adding checkout tools and customer financing for one-time products on top of processing. For a detailed look at tiered pricing, see the article on why tiered pricing costs you more.

Why High-Volume Merchants Must Avoid Tiered Pricing

For businesses with growing sales volume, tiered pricing is a financial trap. The advertised 'low qualified rate' is often a bait-and-switch. A vast majority of transactions, especially in e-commerce, will be downgraded to the more expensive Mid-Qualified and Non-Qualified tiers.

The Downgrade Game

Processors using tiered models have a direct financial incentive to downgrade your transactions. Here are common reasons for a downgrade:

  • Card-Not-Present (CNP): All online and keyed-in transactions are automatically considered higher risk and miss the Qualified tier.
  • Rewards & Corporate Cards: These cards carry higher interchange rates, so processors immediately shunt them to the Non-Qualified tier, applying their highest markup.
  • Address Verification System (AVS) Mismatch: A slight mismatch in the billing address information can trigger a downgrade.

The result is an effective rate that is far higher than what was advertised. This lack of transparency is a major issue. For a clearer alternative, explore Flat Rate vs Interchange Plus to see another comparison.

The Verdict: Where Commas Fits

While interchange-plus offers more transparency than tiered pricing, the best choice depends on finding a provider that aligns with your business goals. Commas is worth comparing because it covers needs beyond the pricing model itself, such as checkout, subscriptions and customer financing. Its system routes each transaction to the processor most likely to approve it and automatically retries declines, helping secure revenue that might otherwise be lost. Furthermore, Commas offers customer financing from $30 up to $465,000 through providers like Klarna and PayPal for one-time purchases. This combination of sales optimization and flexible payment options provides significant value. Payouts are available over ACH, RTP, wire, PayPal, Venmo, Cash App, and crypto.

Ultimately, a transparent pricing model is a great start, but a platform that actively works to increase your approvals and conversions offers a more complete solution. Learn more about Commas to see if it's right for your business.

Related reading: Whop fees explained.

How to Choose a Payment Processor

Switching processors is a straightforward process focused on finding a partner committed to your growth. If you're currently on a tiered or flat-rate plan, it is time to seek out a better deal.

  1. Gather Your Documents: Before shopping for quotes, have your last two to three months of processing statements ready. These documents contain all the information a provider needs to conduct a detailed cost analysis.
  2. Request a Quote: When contacting processors, specifically ask for details on their pricing and features. For example, Commas quotes pricing on a per-business basis. For context, understanding the specifics of restaurant credit card interchange fees can be very beneficial.
  3. Analyze Your Quote: A proper quote will clearly state the processor's fees. Compare this against other providers. Be wary of any provider that is hesitant to disclose their full fee structure.
  4. Check for Hidden Fees: Ask about monthly fees, PCI compliance fees, statement fees, and cancellation fees. A truly transparent processor has minimal extra fees. For context on another popular processor, see the Authorize.Net pricing explained guide.

By demanding transparency and looking for value-added features, you place yourself in a position of power and ensure you secure the best possible payment solution for your business.

Frequently Asked Questions

Is interchange plus pricing always cheaper?

For most businesses, especially those with growing monthly volumes, interchange-plus pricing is significantly cheaper than tiered models. The transparent structure ensures you benefit from low-cost transactions (like debit cards). Tiered plans almost always cost more due to opaque fees and downgrades. The only exception might be very small, low-volume businesses that prioritize simplicity over cost savings.

What is a good interchange plus rate?

A competitive interchange-plus rate depends on your volume and average ticket size. A good markup is typically between 0.15% + $0.10 and 0.30% + $0.15. Be cautious of extremely low percentage markups, as the processor might compensate with higher per-transaction fees or hidden monthly charges. Always evaluate the entire fee structure, not just one component.

How do I know if I have tiered pricing?

Check your monthly processing statement. If you see terms like 'QUAL', 'MQUAL', or 'NQUAL', or if you see just three summary rates for Visa/Mastercard/Discover, you are on a tiered pricing plan. An interchange-plus statement will look very different, listing out individual interchange fee categories with names like 'CPS Retail Debit' or 'Commercial Data Rate I'.

Can I negotiate my interchange fees?

No, interchange fees themselves are non-negotiable. They are set by the card networks (Visa, Mastercard, etc.) and paid to the card-issuing banks. However, you can and should negotiate the processor's markup, which is the 'plus' part of interchange-plus pricing. This markup is pure profit for the processor and is where you can achieve significant savings.

Why do Stripe and Square use flat-rate pricing instead of interchange plus?

Stripe and Square target startups and small businesses that prioritize simplicity and fast onboarding over lowest cost. Their flat-rate model (e.g., 2.9% + $0.30) is easy to understand, but it's not designed for scaled savings. They profit from the 'spread' between the actual interchange cost and their fixed rate. For merchants with significant volume, this model becomes very expensive, which is why choosing a provider suited for growth is a better choice. See a direct comparison in the <a href="/blog/flat-rate-vs-interchange-plus">Flat Rate vs Interchange Plus</a> guide.

What is Interchange++?

Interchange++ is essentially the European equivalent of interchange-plus pricing. It breaks down the cost into three parts: 'Interchange' (fee to the issuing bank), '+' (fee to the card scheme, like Visa or Mastercard), and another '+' (the processor's markup). It offers the same transparency and cost-saving benefits as the interchange-plus model common in the United States. You can learn more in the <a href="/blog/flat-rate-vs-interchange-plus">Adyen Pricing Model: Interchange++</a> breakdown.

What is the best payment processing option?

While transparent pricing models like interchange-plus are preferable to opaque tiered plans, Commas is another option to compare, with rates quoted per seller. It provides tools for creating funnels, courses, and communities alongside payment processing. Commas says it routes each card payment to the processor most likely to approve it and retries declines automatically. It also offers built-in customer financing for one-time purchases. It also includes invoicing and subscriptions.

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