What is Blended pricing?
A single flat rate (e.g. 2.9% + 30¢) charged on all card transactions regardless of underlying interchange.
Blended pricing is a merchant acquiring fee structure where a single percentage rate and sometimes a fixed per-transaction fee are applied to all card payments, regardless of the underlying card type, origin, or acceptance method.
This model bundles the three core cost components of a transaction: the interchange fee payable to the card issuer, the Scheme fee payable to the card network (like Visa or Mastercard), and the acquirer's own markup for processing and risk management.
This consolidation creates a predictable, easy-to-understand fee for every sale, which is why it is commonly used by payment aggregators like Stripe and PayPal, especially for small and medium-sized businesses.
The simplicity of Blended pricing, however, obscures the actual cost drivers of each individual transaction.
For instance, a Debit card transaction in the UK might have a Regulated interchange cost of just 0.20%, while an international corporate Credit card could incur an interchange fee of 2.20% or more.
Under a blended model, both transactions are charged the same rate, meaning the low-cost Debit card transaction heavily subsidises the high-cost Credit card one.
This lack of transparency prevents merchants from realising the cost benefits of a favourable transaction mix, such as a high proportion of domestic debit cards, and makes it difficult to audit acquiring costs effectively.
For any merchant processing significant volume, this model is typically less cost-effective than interchange++ pricing.
Worked example
A UK-based subscription box merchant processes two separate transactions, each for £100, on a Blended pricing plan of 2.5% + £0.20. Transaction A is from a customer using a UK-issued Mastercard Debit card.
Transaction B is from a customer using a US-issued Visa Corporate card.
For Transaction A (the UK Debit card), the underlying costs on an interchange++ model would be approximately: Interchange at the regulated rate of 0.20% (£0.20), a Mastercard Scheme fee of around 0.05% (£0.05), and an acquirer markup of 0.30% + £0.10 (£0.40).
The total IC++ cost would be £0.65. With the blended rate, the merchant pays £2.50 + £0.20 = £2.70.
For Transaction B (the US Corporate card), the underlying IC++ interchange might be 2.40% (£2.40), a Visa Scheme fee of 0.10% (£0.10), plus the same acquirer markup (£0.40). The total IC++ cost would be £2.90.
With the blended rate, the merchant again pays £2.70.
In this scenario, the merchant overpays by £2.05 on the domestic debit transaction and underpays by £0.20 on the international corporate one, demonstrating the cross-subsidy inherent in blended models.
Scheme notes
Blended pricing is a commercial model offered by acquirers and payment service providers, not a structure defined or mandated by card schemes like Visa or Mastercard.
The schemes' role is to set the complex interchange fee tables and Scheme fee rates that Blended pricing deliberately abstracts away.
These tables contain hundreds of rate lines based on factors like card product (debit, credit, premium, commercial), transaction region (domestic, intra-regional, inter-regional), channel (e-commerce, in-person), and security (e. g. , 3D Secure ECI value).
Because a blended rate averages these costs, it hides the savings a merchant could achieve through interchange optimisation, for instance by providing Level 3 data for Corporate card transactions to qualify for lower specific interchange rates offered by both Visa and Mastercard.
Why it matters for merchants
The primary commercial impact of Blended pricing is cost opacity and, for most established businesses, higher overall processing fees.
Merchants with a high percentage of Debit card sales or domestic transactions are particularly disadvantaged, as they unknowingly pay a premium to subsidise more expensive transaction types. This opaque structure makes it impossible to analyse cost-of-acceptance or to benefit from strategies like interchange optimisation.
Migrating to an interchange++ pricing model with Cardflo provides full transparency into the cost components. This allows a merchant to see the direct financial benefit of routing optimisations and data enrichment efforts, often leading to a significant reduction in their overall Merchant Discount Rate.
Frequently asked
How does Blended pricing differ from Interchange Plus?
Blended pricing masks the individual cost components of a transaction by charging a flat rate. In contrast, Interchange Plus (IC+) separates the card scheme's interchange and scheme fees from the acquirer's margin, providing transparency into the exact costs incurred for different card types and regions.
When should a merchant consider moving away from a blended rate?
A merchant should generally evaluate a transition to IC+ pricing once their monthly processing volume increases or if they process a high percentage of low-cost domestic debit cards.
Since blended rates are priced to cover the cost of expensive premium or business cards, high-volume merchants often overpay significantly compared to the actual settlement costs.
Is Blended pricing ever a good choice for a merchant?
For new or very small businesses with low and unpredictable transaction volumes, Blended pricing can be beneficial. The simplicity and predictability of a single rate for financial forecasting can outweigh the potential for cost savings.
Once a business reaches a consistent volume, typically above £15,000 per month, analysing a switch to interchange++ pricing becomes a commercially sound decision.
How can I accurately compare a Blended pricing offer against an interchange++ offer?
The only reliable method is to perform a statement analysis. Provide a recent monthly processing statement to a potential new provider.
They will map your exact transaction mix (card types, regions, etc.) against the proposed interchange++ rates. This allows for an apple-to-apples comparison of the total cost you would have paid under each model for the same set of transactions.
Are Alternative Payment Methods (APMs) like Klarna or iDEAL priced on a blended model?
Yes, almost all APMs are offered on a Blended pricing model. They present a single percentage and/or fixed fee for a successful transaction.
This is because APMs do not have the complex interchange fee structures of the card schemes; the fee is a direct charge from the APM provider to the merchant for using their service.
Can I negotiate my blended rate?
Yes, merchants with significant processing volume can often negotiate a lower blended rate with their provider. However, even a negotiated blended rate is still less transparent than an interchange++ model.
Negotiating the acquirer markup component of an IC++ plan is generally a more effective long-term strategy for cost control.
Does Blended pricing impact my transaction approval rates or chargeback management?
No, the pricing model itself has no direct impact on authorisation rates or chargeback processes. These are functions of the acquirer's risk engine, the issuer's decisioning, and the merchant's fraud prevention tools.
The choice of pricing model is purely a commercial one related to transaction costs and financial reporting.
See how Blended pricing plays out in practice
Industries and regions where this term drives real acquiring, routing, or dispute decisions.
Related terms
Transparent acquirer pricing model that passes interchange and scheme fees through at cost with a fixed processor markup on top.
The fee paid by the acquirer to the issuer on every card transaction, set by the schemes.
Fully unbundled pricing exposing three components: interchange (paid to issuer), scheme fees (paid to Visa/Mastercard), and acquirer markup.
Fees charged by Visa and Mastercard (or another scheme) to acquirers and issuers on every transaction.
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