Most merchants pay 3.5-4% vs. quoted 2.9% in processing fees. Discover the 3 layers of payment fees, hidden costs, and how to calculate your true effective rate.
Most merchants pay 3.5-4% vs. quoted 2.9% in processing fees. Discover the 3 layers of payment fees, hidden costs, and how to calculate your true effective rate.
Most DTC merchants believe they pay 2.9% plus 30¢ per transaction. Then the first statement arrives: actual costs run 3.5% to 4%[1]. That gap goes to hidden fees buried in processing statements.
Every transaction splits three ways: card networks (Visa, Mastercard, American Express, Discover), issuing banks, and your processor. You also pay monthly gateway fees, PCI compliance charges, chargeback fees, non-qualified surcharges, international transaction fees, and early termination penalties.
This breakdown shows where fees hide, how to calculate your true rate, and what transparent pricing looks like.
This breakdown covers:
Every credit card transaction splits payment across three parties. This structure explains why processing costs more than advertised rates suggest [1][2].
| Layer | Who Gets Paid | Typical Cost | What It Covers |
| Interchange | Issuing bank (customer’s bank) | 1.5% to 3.5% + fixed fee | Card rewards, fraud protection, bank services |
| Assessment | Card networks (Visa, Mastercard, etc.) | 0.13% to 0.165% | Payment rail infrastructure and routing |
| Processor Markup | Your payment processor | 0.3% to 1%+ (varies by model) | Gateway access, compliance, support |
Interchange Fees
typically 1.5% to 3.5% plus a fixed amount. Your customer’s issuing bank receives this fee. Rewards cards cost more because you fund the customer’s cash back or points. Basic credit cards charge 1.5% to 1.7% plus $0.10 in interchange. Premium rewards cards at restaurants reach 2.6% or higher [7].
Assessment Fees
Networks charge 0.13% to 0.165% per transaction, non-negotiable across all processors. These fees fund payment infrastructure.
Processor Markup
Your payment processor adds fees on top. Three models exist [2].
Flat Rate: 2.9% + $0.30 applies to all transactions. Predictable but doesn’t reward lower-cost debit cards.
Interchange-plus: Actual interchange + fixed margin (interchange + 0.40% + $0.10) to show exact network costs versus processor markup.
Tiered: Qualified, mid-qualified, and non-qualified rates. This typically costs the most because processors control tier placement with minimal transparency.
Quoted rates rarely match actual costs. Additional fees create effective rates 50 to 100 basis points higher [3].
Hidden Fee Breakdown
| Fee Type | Typical Cost | What to Know |
| Monthly gateway fee | $10 to $30/mo | Charged just to access the platform |
| PCI compliance fee | $100 to $200/yr | Or $20 to $50/mo if you’re “non-compliant” |
| Chargeback fee | $15 to $40 per dispute | Charged whether you win or lose the dispute |
| Non-qualified surcharge | +1% to 3% per transaction | Triggered by rewards cards, corporate cards, or incomplete data |
| International/cross-border fee | +1% to 2% per transaction | Applies to any foreign-issued card |
| Early termination fee | $200 to $500 | The cost of leaving a bad contract |
Traditional processors charge most or all of these. Sales conversations focus on transaction rates while these costs go unmentioned until your first statement.
Monthly gateway fees charge for platform access regardless of volume. Seasonal businesses pay the same during slow and peak months.
PCI compliance fees supposedly cover Payment Card Industry Data Security Standards. Some charge annually, others charge monthly for incomplete questionnaires.
Chargeback fees apply whenever customers dispute charges. $15 to $40 regardless of validity or outcome. High rates trigger additional monitoring fees.
Non-qualified surcharges hit transactions that don’t meet “qualified” criteria. Rewards cards and corporate cards almost always trigger these. Incomplete address verification data also bumps transactions to non-qualified status.
International transaction fees charge 1% to 2% extra for foreign-issued cards. This applies even on US purchases settling in US dollars.
Early termination fees lock you into contracts. Switching costs $200 to $500 or more. Month-to-month agreements avoid termination fees but may charge slightly higher rates.
Your effective rate captures the true cost.
Total monthly fees ÷ Total monthly processing volume = Effective rate
Example: You processed $50,000 in sales and paid $1,750 in total fees. Your effective rate is 3.5% even if your quoted rate was 2.9% + $0.30.
Straightforward processors publish full pricing publicly, charge no monthly or setup fees, and itemize everything. Here’s how providers compare [2-6]:
| Provider | Transaction Fee | Monthly Fee | Notable Hidden Fees |
| Krepling Pay | 2.75% + $0.30 | None | None |
| Authorize.net | 2.9% + $0.30 | $25 | PCI fees, batch fees, statement fees |
| Clover | 2.3% to 2.6% + $0.10 | $0 to $84.95 (software fees) | Equipment leases, PCI fees |
| Traditional processors | Variable (tiered pricing) | $10 to $50+ | Setup fees, PCI fees, early termination fees |
Krepling Pay charges 2.75% + $0.30 per successful domestic transaction with no monthly fees, no PCI fees, and no hidden costs [6]. Volume discounts apply automatically as processing scales. No negotiation required.
For merchants processing $50,000 monthly, the 0.15% rate difference equals $75 per month ($900 annually). Add a $25 monthly gateway fee ($300/year) for $1,200 annual savings before PCI fees, batch fees, or surcharges.
Volume discounts tier automatically. Enterprise merchants receive lower rates without negotiating custom pricing or long-term contracts.
How do I know if I’m being overcharged on processing fees?
Calculate your effective rate by dividing total monthly fees by total monthly processing volume. If the result exceeds your quoted rate by more than 0.3%, you’re paying hidden fees. Request a line-item statement breakdown. Compare your effective rate against transparent processors charging 2.75% to 2.9% with zero monthly fees.
Can I switch processors if I’m locked into a contract?
Check your contract for early termination fees and auto-renewal clauses. Most charge $200 to $500 to exit. Calculate whether the termination fee pays back within three to six months of savings. Month-to-month processors like Krepling Pay eliminate future lock-in. The switch typically takes seven to ten business days with minimal checkout disruption[6].
Do I really need to pay PCI compliance fees?
PCI compliance itself is mandatory for all merchants accepting card payments. However, the fees processors charge are often administrative padding. Many charge $100 to $200 annually or $20 to $50 monthly for “non-compliance” even when you’ve completed questionnaires. Transparent processors include PCI compliance tools at no extra charge[6].
You pay more than your quoted rate. The difference goes to fees processors never clearly disclose[3].
For DTC brands processing $500,000 to $50 million annually, hidden fees cost thousands to tens of thousands per year directly from margin.
Find your effective rate. Divide total monthly fees by total monthly volume. Compare that to transparent pricing. Choose a processor that publishes full costs upfront and eliminates monthly fees, PCI charges, and statement inflation.
Whether you’re an early-stage brand launching your first checkout or an enterprise operation processing millions monthly, transparent pricing means you know exactly what you pay before processing your first transaction [6].
Get started with Krepling Pay to see how much transparent pricing saves on your actual transaction volume.
Most merchants pay 3.5-4% vs. quoted 2.9% in processing fees. Discover the 3 layers of payment fees, hidden costs, and how to calculate your true effective rate.
Learn how Krepling Pay can power your business—whether you’re enhancing your existing checkout or launching a fully embedded, end-to-end retail experience.