Your processor's headline rate isn't what you actually pay. Enter your statement numbers to find your true effective rate and see how it compares to what you should be paying.
Optional: Break out your fees for a deeper analysis
| Business Type | Excellent | Good | Average | Overpaying |
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| Fee Component | Your Cost | % of Total Fees | Industry Norm |
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Processors don't want you to calculate this number. They quote headline rates like "2.6% + $0.10" that sound competitive, then bury the real cost in monthly fees, PCI charges, statement fees, batch fees, and tiered surcharges. A processor quoting 2.6% + $0.10 with $50/month in fixed fees on $20,000 in volume has an effective rate of 2.85% — not the 2.6% you were sold. On $30,000/month, that hidden 0.25% costs $900/year.
The effective rate captures everything in a single comparable number. It's the total you actually paid divided by the total you processed. You can use it to comparison-shop processors without getting distracted by rate structures that obscure the true cost.
Card mix is the invisible variable. Even on interchange-plus pricing, your effective rate fluctuates because the interchange rate varies by card type. A month with more rewards cards and corporate cards costs more in interchange — even though your processor's markup hasn't changed. Debit cards are cheapest (0.05% + $0.21 for regulated debit), standard credit cards are mid-range (1.5-2.1%), and corporate/purchasing cards are most expensive (2.5-3.0%). If your business type attracts corporate card usage (B2B, professional services), your effective rate will always be higher than retail — and that's normal, not a sign you're being overcharged.
Fixed monthly fees also affect the math: $50/month in fixed fees on $50,000 volume adds 0.10%. On $10,000 volume, the same $50 adds 0.50%. This is why the effective rate matters most for small-volume businesses — fixed fees disproportionately inflate their true cost.
If your average ticket is under $15, the per-transaction fee is eating your margin. On a $10 sale at 2.6% + $0.10, the percentage fee is $0.26 and the transaction fee is $0.10 — so the transaction fee represents 28% of your total processing cost. On a $100 sale, the same $0.10 is only 3.7% of the total. Coffee shops, fast food, and convenience stores with $5-15 average tickets are the most affected. Some processors offer programs specifically for low-ticket merchants: Square's rate has no separate per-transaction fee (it's baked into the 2.6%), and some interchange-plus processors will negotiate lower per-transaction fees (from $0.10 to $0.05) for high-volume low-ticket businesses.