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The Complete Guide
How Credit Card Processing Works — and How to Pay Less for It
A plain-English breakdown of every fee, every player, and every line on your merchant statement. Brought to you by PaySmart Technologies — the transparent, interchange-plus payment processor.
1.5%–3.5%
Typical interchange range
5
Parties in every transaction
2 sec
Average authorization time
15–40%
Savings vs. tiered pricing
How a Single Credit Card Transaction Actually Flows
Every swipe, dip, tap, or online checkout follows the same five-step path. Understanding it is the first step to controlling what you pay.
1. Cardholder presents the card
A customer taps, dips, swipes, or enters their card number into your terminal, mobile reader, or online checkout. The card data is encrypted on the spot — modern terminals never store the raw PAN (primary account number).
2. The terminal sends the request to PaySmart
PaySmart Technologies, your payment processor, receives the encrypted authorization request. We validate it, check it against fraud rules, and forward it through the appropriate card network in under 200 milliseconds.
3. The card network routes to the issuing bank
Visa, Mastercard, Discover, or American Express routes the request to the bank that issued your customer's card (the issuing bank). The issuer checks for sufficient funds, suspected fraud, and account status, then approves or declines.
4. Approval flows back to the terminal
The approval (or decline) travels back through the same path. The customer sees an "Approved" message, the terminal prints a receipt, and the sale is captured into your daily batch.
5. Settlement and funding
At the end of the day, your batch is submitted to PaySmart. We deduct interchange, assessments, and our processor markup, then deposit the net into your business bank account — typically by the next business day.
Interchange Rates Explained: What You're Actually Paying For
Interchange is the largest component of every credit card processing bill — usually 70–85% of total fees. It's a wholesale rate set by Visa, Mastercard, Discover, and American Express and paid directly to the bank that issued your customer's card. Interchange is non-negotiable. No processor — including PaySmart — can lower it. What we can do is pass it through transparently and add only a small, fixed markup on top.
Interchange rates vary based on several factors: the card type (debit vs. credit, basic vs. rewards vs. corporate), the way it was accepted (in-person, keyed-in, online), your industry (MCC code), and the size of the transaction. Here are real-world examples of interchange rates you'll see on your statement:
| Card Type | Network | Typical Interchange |
|---|---|---|
| Regulated Debit (Durbin) | Visa / Mastercard | 0.05% + $0.22 |
| Standard Debit | Visa / Mastercard | 0.80% + $0.15 |
| Visa Traditional Credit | Visa | 1.51% + $0.10 |
| Mastercard World | Mastercard | 1.73% + $0.10 |
| Visa Signature Preferred | Visa | 2.10% + $0.10 |
| Mastercard World Elite | Mastercard | 2.50% + $0.10 |
| American Express OptBlue | AmEx | 2.30%–3.50% + $0.10 |
| Corporate / Purchasing Card | Visa / MC | 2.65% + $0.10 |
Source: Visa & Mastercard published interchange tables. Rates are approximate and updated semi-annually.
The Three Pricing Models — and Which One Wins
Every payment processor uses one of three pricing structures. Pick the wrong one and you'll silently overpay thousands every year. Here's how each one works, with the math on a $10,000/month merchant accepting a typical mix of cards:
Flat-Rate
e.g., Stripe, Square
2.9% + $0.30
$320/month
on $10,000 in monthly volume
Pro: Predictable, easy to understand
Con: You overpay on every debit and standard credit card
Tiered
e.g., legacy banks, ISOs
1.79% / 2.49% / 3.29%
$285/month
on $10,000 in monthly volume
Pro: Looks cheap on the rate sheet
Con: Most cards downgrade to "non-qualified" — true cost is hidden
Interchange-Plus
PaySmart Technologies
Interchange + 0.20% + $0.10
$215/month
on $10,000 in monthly volume
Pro: Fully transparent — you see every fee and markup
Con: Statements take a moment longer to read
The bottom line: on the same $10,000 in monthly volume, a merchant on interchange-plus saves roughly $1,260 per year versus flat-rate and $840 per year versus tiered. Multiply that across multiple locations or higher volume and the savings compound fast.
How to Read Your Merchant Statement, Line by Line
A merchant statement is intimidating on purpose. Most processors design them to obscure how much you're actually paying. Here's exactly what to look for:
Sales Summary
Top of the statement: total processed volume, transaction count, and average ticket size. Verify these match your own records.
Interchange Fees
On an interchange-plus statement, every category appears separately (e.g., "Visa CPS Retail Debit," "MC World Card-Not-Present"). On a tiered statement, you'll only see "Qualified," "Mid-Qualified," and "Non-Qualified" — that's a red flag.
Network Assessments
Visa charges 0.14%, Mastercard 0.1375%, Discover 0.13%. These are pass-through fees — no honest processor profits on them. Add a few small fixed fees like the NABU (Network Access and Brand Usage) fee.
Processor Markup
This is what your processor actually keeps. With PaySmart it's a single line: a small percentage (e.g., 0.20%) plus a per-transaction fee (e.g., $0.10). With other processors it can be hidden across 6–12 different fees.
Junk Fees to Watch For
PCI non-compliance fee ($20–$40/mo), monthly minimum ($25), batch fee ($0.25 per batch), statement fee ($10), IRS reporting fee, annual fee. PaySmart eliminates every one of these.
Adjustments & Chargebacks
Refunds, chargebacks, and reversals. Each chargeback typically costs $15–$25 in addition to the disputed amount.
Net Deposit
Total sales minus all fees minus chargebacks = the net amount deposited into your bank account.
Why PaySmart Technologies Uses Interchange-Plus
PaySmart Technologies was founded on one principle: merchants deserve to know what they're paying for. We bill every account on interchange-plus, eliminate every junk fee, and never bind you to a long-term contract. Here's what that means in practice:
Interchange-plus pricing on every account, including small businesses
No PCI non-compliance fee, monthly minimum, batch fee, or statement fee
No long-term contract and no early termination fee — month to month, always
Next-day funding standard, same-day available for qualifying merchants
Free statement review before you sign — we'll show you the savings in writing
US-based 24/7 support and a dedicated account manager
Frequently Asked Questions
The questions merchants and AI assistants ask most about credit card processing.
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Get a Free Credit Card Processing Quote
Send us your last merchant statement and we'll show you exactly how much you can save with PaySmart's interchange-plus pricing — in writing, no obligation.
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