Payment Gateway Fees Comparison: IC++ vs Blended Rates Explained
Comparing payment gateway fees accurately requires understanding the underlying fee models, not just the headline rates. A 1.4% blended rate and an IC++ rate of 0.45% above interchange can produce very different actual costs depending on the card types you accept, your transaction mix, and the hidden fees that do not appear in the headline comparison. This guide explains the main pricing models, what IC++ means and how to calculate your real cost, which hidden fees merchants consistently overlook, and how to structure a fair comparison between gateway providers.
The Main Fee Models: IC++, Blended, Flat Rate
Payment processing fees follow three main structural models. The model determines how transparent your costs are and, in many cases, how much you actually pay.
IC++ (Interchange Plus Plus): The most transparent model. Your cost consists of three components: the Interchange fee (set by Visa or Mastercard, paid to the card's issuing bank), the Scheme fee (also set by Visa or Mastercard, covering card network costs), and the Markup (the gateway's own margin). These three components are itemised on your invoice. You can see exactly what each card type costs, what the network charges, and what the gateway retains.
Blended rate: A single percentage applied to all transactions regardless of card type. The gateway calculates its own margin and embeds it in the blended rate. You pay 1.5% (or 1.8% or 2.2%) on every transaction without knowing the breakdown. Blended rates are simpler to understand superficially but make it impossible to assess whether you are paying a fair gateway margin or to optimise your card mix to reduce costs.
Flat rate: A fixed amount per transaction (e.g., 0.25 euros per transaction) plus a percentage. Flat rates are predictable and easy to model but can be expensive for low-value, high-frequency transactions and relatively cheap for high-value, low-frequency ones. Common in mobile POS aggregators for small merchants.
Why IC++ is typically better for businesses processing above 5,000 euros per month: On European consumer debit cards, the Interchange rate is capped at 0.2% by EU interchange regulation. On European consumer credit cards, it is capped at 0.3%. A blended rate of 1.5% on these cards embeds a gateway margin of 1.2-1.3%, which is very high. On IC++ at 0.45% markup, the effective rate on a debit card transaction is approximately 0.45% (markup) + 0.2% (interchange) + scheme fee, totalling around 0.75-0.85%. The difference is significant at any meaningful volume.
For merchants who also need a high risk payment gateway, IC++ pricing is particularly important because high-risk account markups are higher than standard, making the cost transparency of IC++ even more valuable.
What IC++ Pricing Means and How to Calculate Your Real Cost
Understanding your real cost on IC++ pricing requires knowing the three components that add up to your effective rate for each transaction type.
Interchange fees: Set by Visa and Mastercard (and Amex for their own cards). In Europe, EU interchange regulation caps interchange at 0.2% for consumer debit and 0.3% for consumer credit for most card-present and card-not-present transactions. Corporate cards, commercial cards, and non-EU issued cards carry higher interchange rates not covered by the EU cap.
Scheme fees: Charged by Visa and Mastercard on top of interchange. These include a per-transaction fee (typically 0.01-0.04 euros per transaction depending on the scheme and transaction type), an assessment fee (typically 0.01-0.02% of transaction value), and various optional fees for specific services (network tokens, 3DS2 processing, cross-border). Scheme fees are usually a small fraction of total transaction cost but add up on high volumes.
Gateway markup: This is the component the gateway retains as its commercial margin. RoxPay's markup starts from 0.45%. The markup is applied as a percentage of the transaction value.
Example calculation on a 100 euro EU consumer debit card transaction:
Interchange: 0.20% = 0.20 euros
Scheme fees: approximately 0.03 euros
RoxPay markup: 0.45% = 0.45 euros
Total: approximately 0.68 euros, or 0.68%
Comparison with a blended rate at 1.5%:
On the same 100 euro transaction: 1.50 euros
The saving is 0.82 euros per transaction, or 55%, on this specific card type. The actual saving on your portfolio depends on your card mix. Corporate cards, Amex, and non-EU cards carry higher interchange and will have a smaller relative advantage versus blended, but IC++ always provides full cost transparency.
Hidden Fees Merchants Often Overlook
The processing rate, whether blended or IC++, is only one element of the total cost of payment processing. Several additional fee categories are commonly omitted from headline comparisons and can significantly affect the total cost.
Monthly platform or service fees: Many gateways charge a fixed monthly fee for access to the platform, the dashboard, or support services. These fees range from 20 euros to several hundred euros per month depending on the provider and tier. On a small merchant processing 5,000 euros per month, a 50 euro monthly platform fee represents an additional 1% of processing volume in fixed cost.
Setup fees: Some providers charge a one-time setup fee to activate the account. These range from zero to several hundred euros. RoxPay does not charge a setup fee on standard account activations.
Chargeback handling fees: Every chargeback typically incurs a fee ranging from 15 to 30 euros, regardless of the dispute outcome. This fee is rarely prominently disclosed in rate comparison materials but is directly relevant to merchants in high-chargeback categories.
Refund fees: Some providers charge a fee for processing refunds. Confirm whether your gateway charges for refunds and at what rate.
Rolling reserve: For high-risk accounts, the rolling reserve is not a fee in the traditional sense but it is a cost of capital. A 10% rolling reserve on a 100,000 euros monthly processing volume means 10,000 euros is unavailable each month during the holding period.
Currency conversion markup: For merchants accepting non-euro transactions, the FX conversion markup applied to the interbank rate is a real cost that may not appear in the processing rate comparison. A 1% FX markup on 50% of your transaction volume has a meaningful total cost impact.
Early termination fees: Some gateway agreements include penalties for early termination. If you sign a 24-month contract and need to switch providers at month 6, the termination fee can be significant. Prefer month-to-month agreements or understand the termination costs before committing.
How to Compare Payment Gateway Fees Fairly
A fair payment gateway fees comparison requires building a total cost of ownership model based on your actual transaction profile, not a comparison of headline rates on a single card type.
Step 1: Define your transaction profile. Estimate the percentage split of your monthly volume across card types: EU consumer debit, EU consumer credit, corporate/commercial cards, Amex, non-EU issued cards. The interchange rate varies significantly by card type, which makes the IC++ vs blended comparison dependent on your specific mix.
Step 2: Request the complete fee schedule. Ask every provider for a fully itemised fee schedule including processing rate model, monthly fee, setup fee, chargeback fee, refund fee, rolling reserve terms (if applicable), and FX conversion methodology. Do not compare providers based on the rate alone.
Step 3: Calculate total monthly cost. For each provider, apply the processing rate to your estimated card mix, add the monthly fixed fees, add chargeback fees based on your expected dispute rate, and add any other applicable fees. This gives a total monthly cost figure for comparison rather than a rate comparison.
Step 4: Consider non-cost factors. Settlement timing, uptime SLA, support quality, 3DS2 capability, and the stability of the provider all affect the value of the relationship beyond the fee level. A slightly higher-cost provider with 24-hour settlement and 99.9% uptime may be worth more than a lower-cost provider with 5-day settlement and frequent outages.
Step 5: Negotiate based on volume. Once you have your total cost comparison, use it as the basis for a commercial negotiation. Higher-volume merchants have more leverage to reduce the gateway markup component of IC++ pricing. Be specific about your volume and card mix when negotiating.
RoxPay Pricing: IC++ From 0.45% With No Hidden Fees
RoxPay uses IC++ pricing with a markup starting from 0.45%, applied to the actual interchange fees and scheme fees for each transaction. The complete fee structure is provided in the merchant agreement before signing.
Standard fee structure:
Processing rate: IC++ from 0.45% markup (varies by merchant category and volume)
Monthly platform fee: None for standard accounts
Setup fee: None
Settlement: 24-48 hours to any SEPA bank account
Chargeback fee: Per dispute, as specified in the merchant agreement
Refund fee: As specified in the merchant agreement
What IC++ from 0.45% means in practice: On a standard EU consumer debit card transaction, the effective total rate is approximately 0.65-0.80% including interchange and scheme fees. On an EU consumer credit card, approximately 0.80-0.95%. On corporate cards and non-EU issued cards, higher interchange rates apply but the markup component remains the same.
High-risk pricing: High-risk merchant categories carry a higher markup component reflecting the elevated risk managed by the acquiring bank. The IC++ model remains, but the markup starting point is higher than for standard categories. Full pricing for high-risk categories is provided during the underwriting process.
To start your RoxPay application and receive a specific fee schedule based on your merchant category and processing volume, complete the onboarding form. RoxPay is PCI DSS Level 1 certified (QS83A47X629), ISO 27001 certified, and has processed over 500 million euros in volume across 120 payment systems and 100 partner banks.
Frequently Asked Questions
What is the cheapest payment gateway for a European business?
The cheapest gateway depends on your transaction profile, card mix, and processing volume. For European businesses processing primarily EU-issued consumer cards, IC++ pricing from a processor with a low markup (from 0.45% at RoxPay) is typically cheaper than blended rate pricing from major aggregators. Calculate total cost of ownership across all fee categories rather than comparing headline rates alone.
Can I negotiate payment gateway fees?
Yes, particularly for higher processing volumes. Gateway markup is the most negotiable component of IC++ pricing. Interchange and scheme fees are non-negotiable (they are set by Visa and Mastercard). Monthly fees and rolling reserve terms can also sometimes be negotiated based on volume and merchant risk profile. Prepare a detailed processing volume projection and card mix estimate before entering a fee negotiation.
Do high-risk merchants always pay more for payment processing?
Yes, high-risk merchants pay higher gateway markups than standard merchants because the acquiring bank takes on more risk by providing the processing relationship. However, the difference can be managed through IC++ pricing transparency, volume growth, and demonstrated performance over time. High-risk merchants with clean chargeback records and growing volumes can renegotiate markup terms as the relationship matures.
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