Choosing a credit card processing pricing model is one of the most impactful financial decisions a small business makes — yet most business owners don't understand the options available. Here's a clear comparison of the three main models.
Flat-Rate Pricing
How it works: You pay a single fixed percentage + per-transaction fee on every transaction. Typically 2.6% + $0.10 (Square, Stripe) or 2.49%–2.99% + $0.15–$0.30 (Toast, Clover).
Pros: Simple. Predictable. Easy to understand.
Cons: Most expensive model at scale. You pay the same rate on a $5 debit transaction as a $500 Amex purchase. Per-transaction fees inflate the effective rate on small tickets.
Best for: Very small businesses (under $10,000/month) where simplicity matters more than cost.
Typical effective rate: 2.6% – 3.5% (higher for small average tickets)
Interchange-Plus Pricing
How it works: You pay the actual interchange rate (set by card networks, varies by card type) plus a fixed processor markup. Example: interchange + 0.25% + $0.10.
Pros: Transparent. Debit cards pass through at their actual low cost. Usually the cheapest traditional model.
Cons: Statements are more complex. Still costs 2%–3% overall.
Best for: Businesses doing $20,000+/month that want the lowest traditional rate.
Typical effective rate: 2.0% – 2.8%
Network Offset Pricing
How it works: Two prices displayed — cash price and card price. The card price includes a small offset covering the network processing cost. The merchant's effective rate approaches zero.
Pros: Effective rate near 0%. Legal in all 50 states. Works with all card types. Transparent for customers.
Cons: Requires implementation (signage, POS configuration, staff training). Some businesses worry about customer perception (data shows minimal pushback).
Best for: Any business that wants to eliminate processing costs.
Typical effective rate: 0% – 0.5%
Real-Number Comparison ($50,000/month in card sales)
| Model | Monthly Cost | Annual Cost | Annual Savings vs. Flat-Rate |
|---|---|---|---|
| Flat-Rate (2.7%) | $1,350 | $16,200 | — |
| Interchange-Plus (2.3%) | $1,150 | $13,800 | $2,400 |
| Network Offset Pricing (~0%) | ~$0 | ~$0 | ~$16,200 |
The gap between flat-rate and Network Offset Pricing is $16,200/year on $50,000/month in volume.
The Decision Framework
Choose flat-rate if: You process less than $10,000/month and simplicity is your top priority.
Choose interchange-plus if: You want the lowest traditional processing cost and don't mind reading a more complex statement.
Choose Network Offset Pricing if: You want to eliminate processing costs entirely and are willing to display two prices for your products and services.
Nathan C. leads PaySec's competitive research and market analysis. With a background in payments industry consulting, he produces competitive battlecards, market comparisons, and strategic content that helps position PaySec against legacy processors.
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The first step to reducing your processing costs is understanding exactly what you are paying today. Request a free statement analysis and we will show you a side-by-side comparison of your current costs versus what you could save with Network Offset Pricing.