Accepting credit card payments means setting up the accounts, hardware, and software that let your business take Visa, Mastercard, American Express, and Discover from customers and receive the money in your bank account. The process runs through four parties: the cardholder’s issuing bank, your merchant account provider, the card networks, and an acquiring bank that settles funds. For a business in Katy, Houston, or anywhere in Fort Bend County, the practical question is not whether to accept cards (roughly 80% of US consumer purchases are now cashless) but how to do it at the lowest effective rate without surprises on your monthly statement.
ProTech Payments sets up credit card acceptance for restaurants, retailers, auto shops, salons, and B2B sellers across Katy, Sugar Land, Cypress, and Greater Houston. The cost varies more than most owners expect: a typical small business pays 2.5% to 3.5% of every card sale in blended fees, which on $40,000 in monthly card volume is $1,000 to $1,400 per month. The right setup, and in Texas the option to legally pass that cost to customers, can move most of that back to your bottom line.
This guide walks the full path from choosing a merchant account to taking your first live transaction, the real costs at each stage, and the mistakes that quietly inflate your rate.
What it means to accept credit card payments
Accepting cards requires a merchant account, which is a special bank account that holds funds from card sales before they settle to your business checking account. A merchant account is not the same as a payment gateway or a card reader. It is the underlying authorization that the card networks require before any business can take Visa or Mastercard. If you want the full definition, our guide on what is a merchant account breaks down how it differs from a regular bank account.
You need three connected pieces to go live. First, the merchant account itself, which ProTech underwrites and approves. Second, a way to capture card data, whether a physical point-of-sale terminal, an online payment checkout, or a virtual terminal for phone orders. Third, a payment gateway that transmits the card data securely to the networks for approval.
In-person, online, and over the phone
Card acceptance falls into three channels, and most businesses use more than one. Card-present transactions happen when the customer taps, dips, or swipes at an in-store payment terminal. Card-not-present covers e-commerce checkouts and keyed phone orders, which carry higher interchange because of fraud risk. Mobile acceptance through a phone or tablet reader serves food trucks, contractors, and pop-up retail.
How a credit card transaction actually works
A single card swipe triggers a chain of messages that completes in under three seconds. Understanding it tells you exactly where your fees go and why card-not-present sales cost more.
Authorization, clearing, and settlement
When a customer taps an EMV chip card, the terminal sends the encrypted card data through the gateway to the acquiring bank, which routes it to Visa or Mastercard, which forwards it to the customer’s issuing bank. The issuer checks the balance and fraud signals, then returns an approval or decline. That is authorization. Later, usually at end of day, the approved transactions are batched and submitted for clearing, and funds move during settlement, typically reaching your account in one to two business days. The full mechanics are detailed in our explainer on how credit card payments work.
Who takes a cut
Three fees come out of every sale. Interchange goes to the cardholder’s issuing bank and makes up the largest share, ranging from about 0.05% on a debit card capped by the Durbin Amendment to 2.4% or more on a premium rewards credit card. Assessment fees go to Visa and Mastercard themselves, around 0.13% to 0.15%. The processor markup is what your provider charges on top. Only that last piece is negotiable, which is why how it is structured matters so much.
Step-by-step: setting up payment acceptance
Going from no card acceptance to your first live sale takes most businesses three to seven business days. Here is the sequence.
Step 1: Gather your business documents
Underwriting needs your EIN, a voided business check or bank letter, your business license, and an estimate of monthly card volume and average ticket size. Sole proprietors can often use an SSN. Higher-volume or higher-risk businesses may need three months of prior processing statements.
Step 2: Apply for a merchant account
You submit an application to a provider like ProTech, who underwrites the account, assigns a merchant ID, and connects you to a processing platform such as Fiserv (formerly First Data) or Clover. Approval for a standard low-risk business is usually same-day to 48 hours. Businesses in restricted categories should review high-risk merchant account underwriting before applying, since those accounts have different requirements.
Step 3: Choose and set up your hardware or software
Match the tool to your channel. A countertop or handheld point-of-sale terminal for in-person retail and dining, an online payments gateway for e-commerce, a mobile payments reader for field service, or a virtual terminal for mail and phone orders. If cash flow is tight, ProTech offers equipment financing so you can spread the hardware cost.
Step 4: Pass PCI compliance
Every business that touches card data must meet PCI DSS standards. For most small merchants this is an annual self-assessment questionnaire plus a quarterly network scan. Use point-to-point encryption and never store full card numbers. A PCI compliance program covers the SAQ types, and ProTech’s PCI compliance service handles the paperwork and validation for you.
Step 5: Run a test and go live
Process a small test transaction, confirm it appears in your batch, and verify funds settle to your account. Once that clears, you are accepting cards.
What it costs and how pricing models compare
The single biggest driver of what you pay is the pricing model, not the headline rate a salesperson quotes. Three models dominate the market.
| Pricing model | How it works | Effective rate (typical) | Best for |
|---|---|---|---|
| Flat-rate (Square, Stripe) | One blended rate for all cards | 2.6% + 10¢ in person, 2.9% + 30¢ online | Low volume, under $5K/mo |
| Interchange-plus | Interchange passed through plus fixed markup | Interchange + 0.20% to 0.50% + 10¢ | Most established businesses |
| Tiered (qualified/mid/non-qual) | Cards bucketed into rate tiers | 1.6% to 3.5%, often opaque | Rarely the best deal |
| Dual pricing / cash discount | Customer pays the fee, merchant nets near 0% | Merchant cost close to 0% | High card volume, thin margins |
Flat-rate is simple but expensive once you cross roughly $8,000 to $10,000 in monthly volume. Interchange-plus is the most transparent model because you see the true network cost separated from the markup. Tiered pricing hides margin inside vague tiers and usually costs the most.
When dual pricing changes the math
A dual-pricing program posts two prices, one for cash and one for card, and the card price covers the processing cost. In Texas this is legal when disclosed correctly, and it can take a merchant’s effective processing cost close to zero. Run your own numbers with a dual pricing savings calculator or a credit card processing fee calculator to see the monthly difference.
Choosing acceptance methods by business type
The best setup depends on how and where you take payments.
Restaurants and retail
A full-service restaurant needs a point-of-sale system with table management, tip adjustment, and EMV at the table, while a retailer needs fast checkout, barcode scanning, and inventory sync. ProTech serves both through dedicated restaurant merchant services and retail merchant services setups, and Clover hardware covers most of these needs out of the box.
Service, mobile, and B2B
Auto shops, salons, and home service contractors mix in-person and mobile acceptance, so a handheld reader plus a virtual terminal for deposits works well. B2B sellers handling large invoices often add ACH and eCheck processing because bank transfers cost a flat fee instead of a percentage, which on a $10,000 invoice saves real money. Card versus ACH economics matter most for invoice-heavy businesses.
Common mistakes that inflate your rate
Most overpaying comes from a handful of avoidable errors.
Accepting the first quote without a statement review
Tiered pricing and padded markups hide easily. A free statement analysis reverse-engineers your real interchange cost and shows what you are actually paying above it. ProTech does this at no charge and most reviews surface 20% to 40% in recoverable margin.
Keying instead of dipping cards
A manually keyed card downgrades to a higher card-not-present interchange tier and raises your fraud exposure. Always dip or tap the chip in person, and let the payment gateway tokenize stored cards for repeat customers.
Ignoring chargebacks and PCI scope
Unanswered disputes turn into automatic losses, and lapsed PCI status triggers monthly non-compliance fees of $20 to $40. ProTech’s chargeback management service fights illegitimate disputes, and a solid chargeback prevention process covers the documentation that wins them.
The Texas angle: passing on the fee legally
Texas allows merchants to add a credit card surcharge or run a dual-pricing program, and this is where Houston-area businesses can erase most of their processing cost. The rules are specific. A surcharge cannot exceed your actual cost of acceptance, it cannot apply to debit cards, and you must post clear signage at entry and point of sale plus disclose the amount on the receipt.
Surcharge versus cash discount
A surcharge adds a percentage to the card price. A cash discount program posts the card price as the standard price and gives a discount for cash. Both are legal in Texas when implemented correctly, but the disclosure language differs, and getting it wrong invites network fines. Local businesses in Katy and Sugar Land can rely on ProTech’s merchant services team to set the program up to network and state spec, with coverage across Katy and Houston.
Frequently asked questions
How long does it take to start accepting credit cards?
For a standard low-risk business, underwriting and approval usually take same-day to 48 hours, and the full setup including hardware and PCI takes three to seven business days. High-risk categories take longer because of deeper underwriting. Once your test transaction settles, you are live.
How much does it cost to accept credit cards?
Most small businesses pay a blended 2.5% to 3.5% per transaction, which combines interchange, assessment fees, and the processor markup. On $40,000 in monthly card volume that is roughly $1,000 to $1,400. Dual pricing or a cash discount program can reduce the merchant’s net cost to near zero in Texas.
Do I need a merchant account or can I use Square?
Square gives you a shared sub-account that is fast to start but expensive at scale and prone to sudden holds. A dedicated merchant account costs less per transaction once you pass about $8,000 in monthly volume and gives you stable underwriting. Weigh the tradeoffs between a shared sub-account and a dedicated merchant account before you commit.
What is the difference between a merchant account and a payment gateway?
A merchant account holds your card funds before settlement, while a payment gateway transmits the card data securely to the networks for authorization. You need both: the account approves you to take cards, and the gateway moves the transaction. Online businesses always need a gateway; card-present businesses get it built into the terminal.
Can I pass the credit card fee to my customers in Texas?
Yes. Texas permits both surcharging and dual pricing when you disclose them correctly, post required signage, exclude debit cards, and keep the surcharge at or below your actual cost. Done right, this shifts most of your processing cost to the card-paying customer.
What does PCI compliance require?
Most small merchants complete an annual self-assessment questionnaire and a quarterly network scan, use encrypted terminals, and avoid storing full card numbers. The exact SAQ depends on how you accept cards. ProTech’s PCI compliance service handles validation so you avoid non-compliance fees.
Talk to ProTech Payments
If you are setting up card acceptance or suspect you are overpaying, start with a free statement analysis so you can see your true interchange cost and recoverable margin in writing. When you are ready to go live, get started with a ProTech merchant account built for your Katy or Houston business.
