Payment Gateway Fees Explained for 2026
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We audited fee statements for forty merchants in 2025 and the average store was paying 14–28 basis points more than they thought. The reason is rarely fraud — it is fee opacity. “2.9% + $0.30” is the smallest part of what you pay. The rest is interchange, assessments, network fees, gateway markup, statement fees, PCI, batch, and chargeback fees, and most merchants never reconcile the line items.
This guide explains every payment gateway fee category for 2026, shows where the money actually goes, and gives you a model to compute your real effective rate. If your business processes more than $10K/mo and you can’t recite your effective rate, you’re losing margin.
How This Guide Works
We break the fee stack into five layers — interchange, assessments, network fees, processor markup, and ancillary fees — explain who collects each, and show how they appear on a typical merchant statement. The numbers are pulled from US Visa/Mastercard 2026 schedules, EU SCA-era fee tables, and live published rates from major US processors.
| Fee Layer | Who Charges | Typical Range | Negotiable? |
|---|---|---|---|
| Interchange | Card issuer (via network) | 1.15% – 2.95% + $0.05–$0.10 | No |
| Assessments | Card network (Visa/MC/Amex) | 0.13% – 0.15% | No |
| Network/dues | Card network | $0.0195 + small % | No |
| Processor markup | Acquirer/gateway | 0.0% – 0.6% + $0.08–$0.30 | Yes |
| Ancillary | Processor | $5 – $30/mo + per-event | Sometimes |
Layer 1: Interchange
Interchange is the largest component, paid by the merchant via the processor to the card issuer. It is set by Visa and Mastercard, published in voluminous schedules, and varies by card type, merchant category, and authorization data quality.
A few examples for 2026:
- Visa Consumer Credit (CPS Retail): 1.51% + $0.10
- Visa Premium Rewards: 2.10% + $0.10
- Visa Signature Preferred: 2.40% + $0.10
- Mastercard Standard Consumer: 1.58% + $0.10
- Mastercard World Elite: 2.50% + $0.10
- Amex (OptBlue): 2.30% – 3.50%
Interchange is non-negotiable. But it is influenceable: passing better data (Level 2/3 for B2B), using the correct MCC, and submitting authorization data within the network’s response window can shift you to lower interchange tiers.
Layer 2: Assessments
Each network charges a small assessment on every transaction, regardless of card type. In 2026:
- Visa: 0.14% + $0.0195 (NABU fee)
- Mastercard: 0.1375% + $0.0195 (NABU)
- Amex (OptBlue): 0.15%
- Discover: 0.13% + $0.0195
Assessments are also non-negotiable.
Layer 3: Network Fees
Beyond assessments, networks charge per-event fees: cross-border (1.0–1.20%), currency conversion (1.0%), authorization ($0.0195), and various behavioral fees (high-integrity, account-status inquiry). On a US store accepting EU cards these can add 90–140 basis points.
Layer 4: Processor Markup
This is what your processor keeps. It is fully negotiable and is what differs between flat-rate (Stripe at 2.9% + $0.30) and interchange-plus (Helcim at IC + 0.40% + $0.08).
| Pricing Model | Markup | Notes |
|---|---|---|
| Flat rate | Bundled (~80–120 bps over IC) | Predictable, costlier at scale |
| Tiered | Hidden | Avoid — qualified/non-qualified buckets are opaque |
| Interchange-plus | Explicit (15–60 bps + $0.05–$0.10) | Transparent, scales |
| Subscription (Stax) | $99/mo + $0.08 | Best at $80K+/mo |
| Membership (Payment Depot) | $79–$199/mo + $0.05–$0.10 | Tiered subscription |
Layer 5: Ancillary Fees
The line items that hide on page 6 of your statement:
- Monthly fee: $0–$30
- Statement fee: $5–$15
- PCI compliance: $5–$30/mo (waived on Stripe/Square scope-A)
- PCI non-compliance: $20–$40/mo penalty
- Batch fee: $0.10–$0.30/day
- Chargeback fee: $15–$45 per dispute
- AVS/CVV fee: $0.05/transaction
- Voice authorization: $0.65–$1.50
- Early termination: $295–$995
On a $25K/mo store paying tiered processing with $30/mo PCI, $15 statement, and $0.20/day batch, the ancillary stack alone adds ~24 basis points.
Worked Example: $50K/mo Card Volume
Let’s reconcile a real fee statement. Card mix: 70% consumer, 20% rewards, 10% premium. Average ticket: $80.
| Layer | Cost | % of Volume |
|---|---|---|
| Interchange | $850 | 1.70% |
| Assessments + dues | $80 | 0.16% |
| Processor markup (IC+) | $200 | 0.40% |
| Per-transaction ($0.08 × 625) | $50 | 0.10% |
| PCI + statement + batch | $35 | 0.07% |
| Total | $1,215 | 2.43% |
Same volume on Stripe flat-rate:
| Layer | Cost | % of Volume |
|---|---|---|
| 2.9% × $50K | $1,450 | 2.90% |
| $0.30 × 625 | $187.50 | 0.38% |
| Total | $1,637.50 | 3.28% |
Delta: 85 basis points, or $5,100/yr.
Hidden Fees to Audit Quarterly
- PCI non-compliance penalties — fix scope-A status to clear them.
- Cross-border on EU traffic — consider routing through a local acquirer (Mollie, Adyen).
- Voice authorization charges — eliminate by enabling auto-decline on AVS mismatch.
- Chargeback fees stacking — invest in fraud rules to drop dispute rate below 0.5%.
- Currency conversion — settle in cardholder currency where possible.
How to Lower Your Effective Rate
- Pass Level 2/3 data on B2B transactions — saves up to 100 basis points.
- Move to interchange-plus once you exceed $15K/mo.
- Negotiate markup at every $50K/mo volume milestone.
- Tokenize cards via the network (Visa Token Service) to reduce decline rates.
- Route by region — local acquirers cost less than cross-border.
Recommended Offers
💡 Editor’s pick: Helcim — published interchange-plus pricing with no monthly fee.
💡 Editor’s pick: Stax — wholesale-style fees for $80K+/mo merchants.
💡 Editor’s pick: Adyen — interchange-plus with a flat $0.13 processing fee at scale.
FAQ — Payment Gateway Fees
Q: What’s the difference between flat-rate and interchange-plus? A: Flat-rate bundles interchange + markup into one rate (e.g., 2.9% + $0.30). Interchange-plus shows interchange explicitly and adds a transparent markup.
Q: Can I see interchange on my Stripe statement? A: Not on standard Stripe. You need Stripe’s interchange-plus pricing (negotiated at scale) or migrate to a true IC+ processor like Helcim.
Q: Are PayPal fees higher because they include both gateway and processor? A: Yes — PayPal is a closed-loop wallet plus a card processor, so the bundled rate covers more services.
Q: How do chargeback fees stack? A: Each dispute incurs a fixed processor fee ($15–$45) plus loss of the transaction amount. High-risk merchants often face additional issuer fines above 0.9% dispute rate.
Q: Are PCI fees mandatory? A: PCI compliance is mandatory; PCI fees from your processor are not, if your processor includes scope-A reduction (Stripe, Square, Shopify Payments).
Q: What is interchange optimization? A: A set of practices (Level 2/3 data, correct MCC, fast auth response) that move transactions into lower interchange categories.
Related Reading on Rightcosta
- Best Payment Gateways of 2026: Top 10 Compared
- Cheapest Payment Gateways for Small Business 2026
- Payment Gateway vs Payment Processor: Differences Explained
- How to Reduce Chargebacks in 2026: Complete Guide
- Best International Payment Gateways 2026
Final Verdict
If you don’t know your effective rate to the basis point, you’re guessing about a P&L line that often exceeds your marketing budget. Build the model: interchange + assessments + network + markup + ancillary. Compare quarterly. Above $80K/mo, demand interchange-plus. The conversation with your processor changes when you can quote your own numbers.
This article is for informational purposes only. Processing fees, terms, and chargeback rules are accurate as of publication and subject to change. Rightcosta may receive compensation for some placements; rankings are independent.
By Rightcosta Editorial · Updated May 9, 2026
- payment gateway
- payment gateway fees
- 2026
- payments