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Tool #05 · Pricing Analysis

Interchange Plus
Savings Calculator

Discover exactly how much you overpay on flat-rate processing. Enter your volume and card mix to see your potential monthly and annual savings from switching to interchange-plus pricing.

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Interchange+ vs Flat Rate Calculator

Monthly savings · Annual savings · 5-year projection · Break-even analysis

Your Processing Details
$
Total monthly card processing volume (gross revenue from cards).
Total individual card transactions.
Select to auto-fill typical card mix and interchange rates for your business type.
Flat Rate Pricing
%
The bundled % you pay (e.g., Stripe's 2.9%).
$
Fixed fee per transaction (e.g., $0.30).
Interchange Plus Pricing
Card Type Mix — Drag to adjust your card mix
Debit Cards 25% ~0.46%
Standard Credit 40% ~1.80%
Rewards / Premium 25% ~2.20%
Corporate / Business 10% ~2.65%
Weighted Average Interchange: —
%
The markup above interchange (typically 0.15%–0.50%).
$
Per-tx fee under IC+ (often lower than flat rate).
💡 Pricing Comparison Results
🔴 Flat Rate
—
per month
% Rate fees—
Per-tx fees—
Effective rate—
Annual cost—
🟣 Interchange Plus
—
per month
IC avg rate—
Markup fees—
Per-tx fees—
Effective rate—
Annual cost—
Monthly Savings with Interchange Plus
—
—
Monthly Savings—
Annual Savings—
3-Year Savings—
5-Year Savings—
Effective Rate Reduction—
Savings as % of Current Processing Cost
0% — 100%
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What This Calculator Does

It compares the total cost of your current flat-rate pricing against interchange-plus pricing, using your actual card type mix to calculate a weighted average interchange rate — then shows your exact monthly, annual, and multi-year savings potential.

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How to Use It

Enter your monthly volume and current flat rate. Use the card mix sliders to approximate your transaction mix (your processor statement often shows this breakdown). Enter a typical markup of 0.25%–0.40%. Click calculate to see your savings.

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What to Expect

Merchants processing $30K+/month typically save 0.3%–0.8% by switching to interchange-plus. On $100K/month, that's $3,600–$9,600/year. The savings are largest for merchants with a high debit card mix, since debit interchange is far below typical flat rates.

Interchange Plus Pricing Explained — The Transparent Alternative

Most merchants on flat-rate pricing (like Stripe's 2.9% + $0.30) are unknowingly subsidizing their processor's profit margin on every transaction. Interchange-plus (also called "cost-plus" or "IC+") is a transparent pricing model that passes the actual interchange cost to the merchant with a fixed, disclosed markup — giving merchants full visibility into what they're actually paying and why.

Flat Rate vs. Interchange Plus — The Core Difference

FeatureFlat RateInterchange Plus
Pricing modelSingle blended rate for all cardsActual interchange + fixed markup
TransparencyLow — costs bundledHigh — fully itemized
Cost when debit card usedFull flat rate (~2.9%)Actual debit interchange (~0.46%)
Cost for rewards cardsFull flat rate (~2.9%)Actual rewards IC (~2.2%) + markup
Monthly statementSimple, single lineDetailed, itemized by card type
Who benefits mostLow-volume, simple businesses$30K+/month, high debit mix
Typical availabilityAny processorMid/large merchant accounts

How Interchange Rates Work

Interchange rates are set by Visa and Mastercard and paid to the card-issuing bank for every transaction. They vary by card type, transaction method, and merchant category. Here is a simplified breakdown of typical US interchange rates:

Flat Rate Cost = Volume × 2.9% = $100,000 × 2.9% = $2,900/month
IC+ Cost Example = (Debit 25% × 0.46%) + (Std Credit 40% × 1.80%) +
(Rewards 25% × 2.20%) + (Corp 10% × 2.65%) + markup
= Weighted IC ~1.60% + markup 0.30% = 1.90%
IC+ Monthly Cost = $100,000 × 1.90% = $1,900/month
Monthly Saving = $2,900 − $1,900 = $1,000 saved

Who Benefits Most from Interchange Plus?

  • High debit card volume — Debit interchange is ~0.46% vs. flat rate 2.9%. The gap is enormous for debit-heavy businesses.
  • B2B merchants — Corporate and purchasing cards have high interchange, but on IC+ you can also qualify for Level 2/3 data discounts that reduce costs significantly.
  • High volume merchants ($30K+/month) — The savings compound quickly and justify the more complex statement.
  • Subscription businesses — Card-on-file transactions qualify for lower interchange categories.
  • Merchants with predictable card mix — Easier to model and budget for ongoing costs.

Who Should Stick With Flat Rate?

  • Very low volume merchants (under $10K/month) — The complexity isn't worth the saving.
  • Businesses with 100% rewards card use — If your customers all use premium rewards cards, flat rate may cost about the same.
  • Startups prioritizing simplicity — Flat rate is easier to understand and budget for early stage.

How to Get Interchange Plus Pricing

Most large processors offer IC+ pricing but don't advertise it — you have to ask. The typical steps are:

  • Request a quote for "interchange-plus" or "cost-plus" pricing from your current processor.
  • Get your current card mix breakdown from your monthly processing statement.
  • Use this calculator to model the savings and use them as a negotiating tool.
  • Work with a consultant like QuadraPay who has direct relationships with acquirers offering IC+ pricing at competitive markup rates.
💡 QuadraPay Tip: Most merchants on Stripe, PayPal, or Square have never been offered IC+ pricing — these platforms profit from the flat-rate spread. QuadraPay can connect you with acquirers offering IC+ with markups as low as 0.15%–0.25%, saving high-volume merchants thousands per year. Get a free IC+ quote →

Frequently Asked Questions

Is interchange-plus always cheaper than flat rate?
For most merchants processing over $30K/month — yes, significantly. The exception is merchants whose customers overwhelmingly use premium rewards or corporate cards, where interchange rates approach or exceed typical flat rates. The card mix sliders in our calculator help you model your specific situation accurately.
What is a good markup rate for interchange-plus?
A competitive IC+ markup for standard low-risk merchants is 0.10%–0.30%. For high-risk merchants, 0.30%–0.60% is typical. If you're being quoted above 0.50% on a standard account, you have room to negotiate. QuadraPay can access markups as low as 0.15% for qualifying merchants.
Will my monthly statement become harder to understand?
Yes — IC+ statements are more detailed, showing interchange categories and fees by card type. This complexity is the main reason processors prefer flat rate (it's harder to spot overcharging). Most accounting software can import IC+ statements automatically. The extra detail is actually a benefit — it gives you full visibility into where your processing costs come from.
Can high-risk merchants access interchange-plus pricing?
Yes, but it's less common and the markup is higher. Some high-risk acquirers offer IC+ with markups of 0.40%–0.80%, which can still save money over bundled flat rates of 4%–5%. It depends heavily on your industry and volume. QuadraPay can advise on whether IC+ makes sense for your specific risk profile.
What is Level 2 and Level 3 data and how does it reduce interchange?
Level 2 and Level 3 data are enhanced transaction details submitted with B2B card payments (tax amount, customer code, line-item detail, etc.). When submitted, these qualify transactions for lower "commercial" interchange rates — which can save 0.5%–1.5% on B2B purchases. This is a significant IC+ benefit for merchants selling to businesses that the flat-rate model cannot capture.
How long does it take to switch to interchange-plus?
Switching pricing models with your existing processor can take 2–4 weeks and requires a contract amendment. Switching to a new processor entirely typically takes 1–3 weeks for underwriting and setup. QuadraPay can expedite new processor setups and ensure you're correctly configured for IC+ from day one.