Blended vs Interchange-Plus Pricing: Which Is Better?

Quick Answer

Blended vs Interchange-Plus at a Glance

What Happens When a Customer Pays by Card?

When a customer taps or inserts their card at your terminal, the transaction flows through multiple intermediaries before the money reaches your account. Each intermediary takes a cut:

1. 1The customer's bank (issuer) receives an interchange fee for processing the transaction
2. 2Visa, Mastercard, or eftpos (the scheme) receives a scheme fee
3. 3Your payment provider or acquiring bank receives their margin for processing
4. 4Your account is credited with what remains

Blended and interchange-plus pricing are two different ways of bundling and presenting these costs to you. The underlying costs are the same; the way you see them and how they change over time differs significantly.

What Is Blended Pricing?

Blended pricing (also called flat-rate pricing) combines all card-payment costs into a single transaction percentage. Your payment provider takes the average interchange rate, scheme fees, and their own margin, then charges you one rate for all cards.

For example, if your provider quotes 1.6% blended pricing, you pay exactly 1.6% on every card transaction, whether it's a Visa debit card, Mastercard credit card, or eftpos transaction. The rate does not vary by card type.

QwikPay Illustrative Example: Cafe Using Blended Pricing

A cafe in Brisbane processes $50,000 in card payments per month on a 1.6% blended rate with Square. The breakdown:

Advantages of Blended Pricing

• Simplicity: One rate applies to all cards. No need to understand interchange, scheme fees, or card types.
• Predictability: Your per-transaction cost is always the same. Easy to calculate margins and forecast payment costs.
• No surprises: You won't suddenly face a higher rate because customers used more credit cards one month.
• Setup ease: Blended pricing is the standard offering from most payment providers, so it's widely available.

Disadvantages of Blended Pricing

• Hidden cost structure: You don't see the actual interchange or scheme costs. The provider bundles them and keeps any margin.
• No benefit from cheaper cards: If your customers use mostly debit cards (cheaper interchange), you pay the blended rate anyway. The provider keeps the difference.
• No automatic pass-through: If interchange caps fall, the provider is not obligated to pass savings to you. Blended rates may stay the same.
• Potential overpayment: If your business has a favorable card mix (many debit transactions), blended pricing may be more expensive than IC++.

What Is Interchange-Plus Pricing?

Interchange-plus pricing (IC++) shows you the cost structure explicitly. Your invoice lists the actual interchange you were charged (which varies by card type) plus a fixed provider margin on top.

For example, an IC++ quote might be: "Interchange rate + 0.4% margin." If the actual interchange on a transaction is 0.8% (debit card), you pay 0.8% + 0.4% = 1.2%. If the interchange is 1.7% (credit card), you pay 1.7% + 0.4% = 2.1%.

What Does IC++ Include?

IC++ typically includes:

• Interchange: The actual fee charged by the customer's bank. This varies by card type (debit, credit, international).
• Scheme fees: Visa, Mastercard, or eftpos fees. Usually bundled as part of the IC++ quote or listed separately.
• Provider margin: The payment processor's profit, expressed as a fixed percentage (e.g., +0.4%) or per-transaction fee (e.g., +$0.15).

IC++ typically does NOT include terminal rental, monthly account fees, PCI compliance fees, gateway fees, or international markup — these are usually separate.

QwikPay Illustrative Example: Retailer Using Interchange-Plus Pricing

A Melbourne retailer processes $50,000 in card payments per month on an IC++ rate of "Interchange + 0.4%". Card mix: 60% debit ($30,000), 40% credit ($20,000). Current interchange caps (before October 2026): debit 0.50%, credit 0.80%.

Advantages of Interchange-Plus Pricing

• Transparency: You see the actual costs. No mystery about what interchange and scheme fees are charged.
• Favorable card mix benefit: If your customers use mostly cheaper cards (debit), your total cost is lower.
• Automatic pass-through: If interchange caps fall on 1 October 2026, your cost automatically falls too (subject to contract terms).
• Cost control: You can see exactly where the expenses are. If your provider's margin is too high, you can shop around.
• Negotiation leverage: It's easier to negotiate the margin (+0.4%) than to renegotiate a blended rate.

Disadvantages of Interchange-Plus Pricing

• Complexity: You must understand interchange rates, which vary by card type, and track them as they change.
• Volatility: Your per-transaction cost is not fixed. If customers use more credit cards one month, costs rise.
• Not always cheaper: If your customers are mostly credit-card users, IC++ may be more expensive than blended pricing.
• Additional fees: Scheme fees, terminal rental, and monthly charges may not be included in the IC++ quote. You must ask.

Blended vs Interchange-Plus Comparison

Which Pricing Model Is Cheaper?

Neither model is always cheaper. The answer depends on:

• Your card mix: What percentage of transactions are debit vs. credit?
• Your transaction volume: How much you process per month.
• The specific provider: Different providers offer different blended rates and IC++ margins.
• Fixed costs: Terminal rental, monthly fees, and account fees on top of transaction costs.

The only way to know which is cheaper for your business is to calculate your effective payment rate under both models using your actual card volumes.

QwikPay Illustrative Example: Surcharge Impact on a Restaurant

A Sydney restaurant currently processes $80,000 per month in card payments and charges a 1% surcharge (allowed today, but banned from 1 October 2026). It uses Square blended pricing at 1.6%.

QwikPay Illustrative Example: Effect of Fixed Fees on Small Transactions

A small business processes many small transactions ($10–$50). A 1.5% blended rate looks reasonable, but hidden monthly and terminal costs make the real cost much higher.

How to Identify Your Pricing Model

Check your merchant agreement or latest invoice:

• Blended: You see one percentage rate (e.g., 1.6%). All cards are charged the same rate. Your invoice shows only the transaction rate, not a breakdown by card type.
• IC++: Your invoice shows "Interchange" + a provider margin (e.g., +0.4% or +$0.10 per transaction). You may see line items for debit, credit, and international transactions at different rates.

If you cannot tell from your invoice, contact your payment provider and ask directly: "Are we on blended pricing or interchange-plus pricing?"

Why This Matters Before 1 October 2026

On 1 October 2026, the Reserve Bank of Australia is cutting interchange fees:

• Domestic debit cards: Interchange will fall from 0.50% to 0.08 cents or 0.16% (whichever is lower).
• Consumer credit cards: Interchange will fall from 0.80% to 0.30%.
• Commercial credit cards: No change (remain at 0.80%).

For businesses on interchange-plus pricing, these savings will automatically flow through (subject to contract). For businesses on blended pricing, the outcome depends entirely on whether the provider chooses to pass savings to merchants.

The Four Merchant Positions

Where your business stands depends on your pricing model and card mix:

1. 1Blended pricing, mostly credit cards: You lose the surcharge ($XX/year) and gain nothing from lower interchange. Worst position.
2. 2Blended pricing, mixed card mix: You lose the surcharge ($XX/year) and may benefit if the provider passes savings to you. Uncertain position.
3. 3IC++ pricing, mostly credit cards: You lose the surcharge ($XX/year) but automatically benefit from lower interchange. Moderate position.
4. 4IC++ pricing, mostly debit cards: You lose the surcharge ($XX/year) but gain significant benefit from lower interchange. Best position.

How to Calculate Your Effective Payment Rate

Your effective payment rate is your true cost of accepting payments. It includes every fee, not just the per-transaction rate.

Calculate it this way:

1. 1Add up all card-payment costs for 12 months: transaction fees, monthly fees, terminal rental, PCI fees, gateway fees, anything related to card acceptance.
2. 2Divide by your total card sales volume for the same 12 months.
3. 3Multiply by 100 to express as a percentage.

Example: Total card fees $6,000 / Annual card sales $400,000 × 100 = 1.5% effective rate.

This is your true cost. Compare this rate (not just the transaction percentage) across different providers.

Questions to Ask Your Payment Provider

• Which pricing model are we on: blended or IC++?
• If blended: Will our rate fall if interchange caps drop on 1 October 2026?
• If IC++: Are we guaranteed to see lower costs if interchange falls?
• What is our total effective payment rate (all fees included)?
• How often can the rate be changed, and what notice do we get?
• Are there fees beyond the transaction rate (terminal, monthly, PCI)?
• Can we see a 12-month cost comparison with your rates vs. competitors?
• What is the early termination fee if we want to switch providers?

Why Nik Bavisetti Believes Businesses Need Greater Transparency

I'm Nik Bavisetti, Co-Founder of QwikPay. In speaking with Australian business owners, I've found that many know the percentage their payment provider charges, but very few know their true annual cost of accepting payments.

A business owner might know they "pay 1.6%" but not know they also pay $30/month terminal rental, $10/month account fee, $5/month PCI fee, and $60 annual gateway fee — adding another 0.5% to their true cost. They've never calculated it.

My purpose in writing this is to help merchants:

• Understand what pricing model they actually use
• Calculate their true effective payment rate
• Ask better questions of their payment providers
• Prepare for the surcharge changes coming in October 2026
• Explore alternative payment models beyond traditional card processing

How QwikPay Is Different

QwikPay is not a card processor. We do not use blended or interchange-plus pricing because we do not process card payments at all.

Instead, QwikPay uses direct bank-to-bank transfers via Australia's New Payments Platform (NPP) through PayID and PayTo. When a customer loads their QwikPay wallet or makes a payment to a merchant, the money moves directly from their bank account — no card network is involved.

Because there is no card network:

• No interchange fees (these are card-network costs)
• No scheme fees (these are card-network costs)
• No merchant transaction fee (this is how we differ from card processors)
• Merchants pay $0 per transaction

Blended and interchange-plus pricing are card-payment models. If you accept payments through QwikPay, you're operating outside that model entirely.

Frequently Asked Questions

See the FAQ section above for detailed answers to common questions about blended vs interchange-plus pricing.

Final Takeaway

Blended pricing is simpler but less transparent. Interchange-plus pricing is more complex but gives you visibility into costs and automatic pass-through of interchange reductions.

Neither model eliminates card fees. Both still involve interchange, scheme fees, and provider margins. The RBA's October 2026 interchange cuts will lower these fees but will not eliminate them.

Calculate your effective payment rate, ask your provider hard questions, and compare against alternatives — including payment models that don't use card networks at all.