Interchange-Plus Pricing: Why Low-Risk Merchants Should Ask
Learn how interchange plus pricing works, why low-risk merchants have leverage to get it, and the break-even math showing when it beats flat-rate fees.
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On this page 9 sections
- How Interchange-Plus Pricing Works
- Interchange-Plus vs. Flat Rate vs. Tiered Pricing
- Why Low-Risk Status Gives You Pricing Leverage
- Break-Even Math: When Interchange-Plus Saves Money
- How the Math Plays Out by Industry
- Markups and Fees to Negotiate
- Questions to Ask Before Signing
- Is Interchange-Plus the Best Pricing Model for Low-Risk Merchants?
- Next Steps
Key takeaways
- Interchange-plus pricing passes card network costs through at cost and adds a fixed, visible processor markup.
- Low chargebacks, steady volume and a clear business model give low-risk merchants leverage to request transparent pricing.
- Your break-even point against flat rate depends on your card mix, average ticket and fixed monthly fees.
- Negotiate the markup, the per-transaction fee and the add-on fees, and read the termination terms before you sign.
If your business has low chargebacks, predictable sales and a simple, well-documented business model, you are in a good position to ask for interchange plus pricing. Under this model, you pay the actual card network costs plus a disclosed processor markup, instead of a bundled rate. This guide explains how the model works and how it compares with flat-rate and tiered pricing. It also shows how to estimate the monthly volume at which interchange-plus starts costing less than flat rate, and which fees and terms to negotiate before you sign.
How Interchange-Plus Pricing Works
Every card transaction carries costs that the processor does not set. Interchange-plus, sometimes called cost-plus credit card processing, separates those costs from the processor's own margin.
A typical interchange-plus statement has three layers:
- Interchange. This fee is paid to the cardholder's issuing bank. Visa, Mastercard and Discover publish interchange schedules. Rates vary by card type (debit, standard credit, rewards credit, business card), by how the card was accepted (chip, tap, keyed, online) and by merchant category.
- Network fees (assessments). These are charged by the card brands for using their networks.
- Processor markup. This is the processor's price, usually quoted as a percentage plus a per-transaction fee "over interchange." For example, an illustrative quote might read "0.25% + 10¢ over interchange."
The first two layers are the same no matter which processor you use. The third layer is the part you can negotiate and compare.
American Express is often handled differently, depending on whether your account accepts it through a program bundled with your processor or through a direct relationship with American Express. Ask how Amex will be priced on your statement.
Interchange-Plus vs. Flat Rate vs. Tiered Pricing
Most small-business quotes fall into one of three structures.
| Interchange-Plus | Flat Rate | Tiered | |
|---|---|---|---|
| How it's priced | Actual interchange and network fees, plus a fixed markup | One percentage plus a per-transaction fee for most cards | Transactions sorted into "qualified," "mid-qualified" and "non-qualified" buckets, each with its own rate |
| Transparency | High: every cost is itemized | Simple, but the margin is hidden | Low: the processor decides which bucket a card lands in |
| When cheap cards are used (such as debit) | You get the savings | The processor keeps the difference | Often charged at the qualified rate, with savings kept by the processor |
| When expensive cards are used (such as rewards) | You pay the higher interchange | Same flat rate | Often "downgraded" to a costlier tier |
| Best fit | Established businesses with steady volume | Very new or very low-volume businesses that want predictability | Rarely the best choice once you can compare |
Interchange-Plus vs. Flat Rate
Flat rate is easy to understand, and it makes sense when your volume is small and fixed monthly fees would eat into your margin. The trade-off is that flat rate is priced high enough to cover expensive cards. When a customer pays with a low-cost debit card, you pay the same rate as you would for a premium rewards card.
Interchange-Plus vs. Tiered Pricing
Tiered pricing looks simple because the quote usually highlights the low "qualified" rate. In practice, many transactions can fall into the higher tiers, and the rules for what counts as qualified are set by the processor. If you are on tiered pricing now, check your statement to see what share of your volume is billed at mid- and non-qualified rates.
Why Low-Risk Status Gives You Pricing Leverage
Processors price for risk. A merchant with few disputes, consistent monthly volume and clear refund policies costs less to support and is less likely to cause losses through chargebacks or fraud. That gives you room to ask for a transparent structure and a thin markup. (For more on how underwriters assess this, see what processors look for in a low-risk merchant account.)
Signals that strengthen your position include:
- A low chargeback ratio and a documented refund and return policy
- Processing history, with several months of statements showing stable volume
- Mostly card-present sales, or for online sellers, a clear website with shipping, refund and contact details
- A straightforward merchant category with no regulated or high-dispute products
- Predictable seasonality that you can explain in advance
Bring recent statements when you shop for a processor. A provider can only price competitively if it can see your real card mix and average ticket.
Break-Even Math: When Interchange-Plus Saves Money
Interchange-plus usually adds fixed monthly costs, such as an account or statement fee, that flat-rate plans often skip. The question is whether the lower percentage cost on each sale outweighs those fixed fees at your volume.
A Simple Break-Even Formula
When both plans charge the same per-transaction fee, the formula is:
Break-even monthly volume = fixed monthly fees ÷ (flat-rate % − [blended interchange % + markup %])
If the per-transaction fees differ, add (flat per-item fee − interchange-plus per-item fee) ÷ average ticket to the bottom of the formula.
Your blended interchange is your total interchange and network fees divided by your card volume. You can calculate it from an interchange-plus statement, or a provider can estimate it from your current statements.
An Illustrative Example
All numbers below are illustrative, not actual rates or quotes. Assume these terms:
- Flat rate: 2.6% + 10¢ per transaction
- Interchange-plus: blended interchange and network fees of 1.9%, plus a 0.25% + 10¢ markup
- $25 in fixed monthly fees on the interchange-plus plan
- $40 average ticket
| Monthly Card Volume | Flat-Rate Cost | Interchange-Plus Cost | Difference |
|---|---|---|---|
| $5,000 | $142.50 | $145.00 | Flat rate cheaper by $2.50 |
| $10,000 | $285.00 | $265.00 | IC+ cheaper by $20 |
| $25,000 | $712.50 | $625.00 | IC+ cheaper by $87.50 |
| $50,000 | $1,425.00 | $1,225.00 | IC+ cheaper by $200 |
| $100,000 | $2,850.00 | $2,425.00 | IC+ cheaper by $425 |
Why Your Card Mix Changes Everything
Blended interchange is the variable that moves the break-even point most. Using the same illustrative terms:
| Illustrative Blended Interchange | Break-Even Monthly Volume |
|---|---|
| 1.7% | About $3,850 |
| 1.9% | About $5,560 |
| 2.1% | $10,000 |
| 2.3% | $50,000 |
When your blended interchange plus markup reaches or exceeds the flat rate, flat rate wins at any volume. This is why online stores and businesses whose customers mostly use premium rewards cards should run the math with their own statements rather than relying on general rules. Card-not-present transactions generally carry higher interchange than chip or tap sales. Our guide to card-present vs. card-not-present fees explains why.
How the Math Plays Out by Industry
Retail Stores
Most retail sales are chip or tap, which tends to keep interchange lower than keyed or online sales. Holiday peaks raise volume, which favors a percentage-based savings model. Ask how returns are priced, since some processors charge a per-item fee on refunds.
Restaurants and Bars
Tips are added after authorization, and bar tabs often run on preauthorizations. Transactions that settle late, or that differ significantly from the authorized amount, can be charged at higher interchange. Daily batch closing and clean credit card tip adjustment practices help keep your interchange-plus costs predictable.
Grocery Markets
Grocery stores typically process a high number of small-to-mid-sized tickets, with a large share of debit cards and very thin margins. Two consequences follow. The per-transaction markup matters as much as the percentage, and low-cost debit interchange is exactly the saving that flat rate keeps for the processor. EBT runs separately from card processing, so leave it out of your card-cost calculations.
Low-Risk E-Commerce
Online sales are card-not-present, so blended interchange runs higher, and you may also pay gateway fees. Run the break-even formula with gateway costs included in your fixed fees. For a deeper look, see when an online store should switch from flat rate, or explore MannyPay's low-risk e-commerce payment processing.
Markups and Fees to Negotiate
Getting an interchange-plus quote does not guarantee a good deal. Compare these items line by line:
- Percentage markup and per-transaction markup. These two numbers make up your real price. A low percentage paired with a high per-item fee can cost more for small-ticket businesses.
- Network fees billed "at cost." Confirm that card brand fees are passed through unchanged and not padded or renamed.
- Monthly, statement and account fees. These feed directly into your break-even calculation.
- PCI DSS compliance and non-compliance fees. Ask what the fee covers and how to avoid non-compliance charges.
- Gateway, batch and per-authorization fees. These are common for online and multi-terminal setups.
- Annual fees and monthly minimums.
- Chargeback and retrieval fees.
- Equipment terms. Find out whether you can buy hardware outright or whether you are locked into a lease.
- Early termination fees. Read the term length and the cancellation language. Here is how to avoid early termination fees on merchant accounts.
Questions to Ask Before Signing
- Is this true interchange-plus, with interchange and network fees itemized at cost on my statement?
- What exactly are my percentage and per-transaction markups, and are they fixed for the contract term?
- Can you increase the markup, and how much notice will I receive?
- What fixed monthly fees apply, and which are optional?
- How is American Express priced?
- Are refunds, declines or authorizations charged a fee?
- What is the contract length, and is there an early termination fee?
- Can you show me a sample statement so I know what I'll be reading each month?
For a broader checklist, use these 12 questions to ask a merchant service provider.
Is Interchange-Plus the Best Pricing Model for Low-Risk Merchants?
For many established low-risk businesses with steady volume, interchange-plus is the most transparent option and is often the most cost-effective. It is not automatically the best choice, though. Very low-volume merchants may do better with flat rate.
Some merchants also look at programs that shift card costs to customers who choose to pay by card, such as cash discount, dual pricing or surcharging where it is permitted. Each program has its own disclosure and compliance requirements, and the rules vary by state. Compare them in cash discount, dual pricing and surcharging explained, and confirm the rules that apply to you with a qualified professional.
Next Steps
Pull your last three months of processing statements and calculate your effective rate (total fees divided by total card volume). If you can, estimate your blended interchange as well. Then run the break-even formula with real quotes from providers.
MannyPay offers payment processing for low- and high-risk businesses, along with cost programs including cash discount, dual pricing, surcharging where permitted, and zero cost processing programs for eligible merchants. When you request a free processing quote, a MannyPay specialist will respond within one business day so you can compare pricing structures side by side using your own numbers.
This article is for general educational purposes and is not legal, tax or financial advice. Card network rules and state laws change; confirm current requirements for your business.
