A merchant account is a specialized bank account that lets a business accept card payments (Visa, Mastercard, American Express, Discover) and move the funds into its regular checking account after each batch settles. It is not a place where money sits long term. It is the holding and routing layer between a customer’s card, the card networks, and your business bank account, and it carries its own pricing, underwriting, and compliance rules.
ProTech Payments sets up and manages merchant accounts for businesses in Katy, Houston, and across Fort Bend County, from a single auto repair shop in Richmond to a multi-location retail group in Sugar Land. The reason the account type matters: a poorly structured merchant account can cost a Texas business 1.5% to 2.5% more in effective rate than a properly negotiated one, which on $500,000 in annual card volume is $7,500 to $12,500 left on the table every year. This guide explains what a merchant account is, how the money actually flows, what you pay for, and how to choose one without overpaying.
If you already process cards and want to know your real effective rate, ProTech’s free statement analysis reads your current processor’s statement line by line and shows the markup.
What a merchant account actually is
A merchant account is a contract between your business, an acquiring bank, and a payment processor that authorizes you to accept and settle card transactions. The acquiring bank (the acquirer) underwrites the risk that you might not deliver goods or that customers might dispute charges. The processor (companies running on platforms such as Fiserv, formerly First Data, or TSYS) moves the transaction data between your terminal and the card networks.
The parties involved
Five entities touch every card sale. The cardholder pays. The issuing bank is the cardholder’s bank, which approves or declines the charge. The card network (Visa, Mastercard, Discover, American Express) routes the authorization and sets interchange rates. The acquiring bank holds your merchant account and assumes liability. The processor or merchant services provider, such as ProTech Payments, ties it together and supports the merchant.
Why a regular bank account is not enough
A standard business checking account cannot accept card authorizations or carry the chargeback liability that card brands require. The merchant account exists because Visa and Mastercard rules demand a registered, underwritten entity that can be held responsible for refunds and disputes. That underwriting is also why high-risk verticals (CBD, firearms, subscription billing, travel) often need a high-risk merchant account with different terms than a standard retail shop.
How the money flows
A card sale moves through two stages: authorization in seconds, then settlement in one to two business days. Understanding both stages explains where fees come from and why funds are not instant.
Authorization
When a customer taps an EMV chip card or a contactless phone at your terminal, the card data travels from your point-of-sale device to your processor, then to the card network, then to the issuing bank. The issuer checks the balance and fraud signals and returns an approval or decline, usually in under two seconds. No money has moved yet. The funds are only held against the cardholder’s available credit. For a deeper breakdown of this step, see our guide on how credit card payments work.
Batching and settlement
At the end of the day you batch out, which submits all approved authorizations for settlement. The card networks pull funds from each issuing bank, interchange is deducted, and the net amount lands in your merchant account, then sweeps to your business checking account. Standard funding is next day or two days. EMV chip acceptance matters here because card-present EMV transactions shift counterfeit-fraud liability away from the merchant, which is why every modern point-of-sale system ProTech deploys is EMV and contactless ready.
Merchant account fees explained
Merchant account costs break into three buckets: wholesale costs set by the networks, the processor’s markup, and fixed account fees. Knowing which bucket a charge belongs to is the only way to tell a fair price from an inflated one.
Interchange and assessments
Interchange is the fee the issuing bank keeps, set by Visa and Mastercard, and it is non-negotiable for every processor. A swiped consumer credit card might run around 1.80% plus $0.10, while a keyed corporate card runs higher. Assessments are the small network fees Visa and Mastercard charge on top, roughly 0.13% to 0.15%. The Durbin Amendment caps debit interchange for large issuing banks at $0.21 plus 0.05%, which is why debit-heavy businesses can save real money with the right routing. Our interchange fees explained post lists current category rates.
Processor markup and account fees
The markup is the only part a processor controls and the only part you negotiate. On top of interchange and markup sit fixed items: monthly account fees, PCI compliance fees, statement fees, batch fees, and chargeback fees (commonly $15 to $25 per dispute). A merchant account also requires PCI compliance, and many processors charge a monthly PCI fee or a non-compliance penalty that quietly inflates the effective rate.
Lowering the effective rate
Your effective rate is total fees divided by total volume. Texas businesses can move that number down with a dual pricing or cash discount program that passes the card cost to customers who choose to pay by card, which is legal in Texas when disclosed correctly. Run the math first with the dual pricing savings calculator.
Pricing models compared
The pricing model decides how transparent your fees are. The same business can pay very different effective rates depending on which model the processor uses. The table compares the three common structures on a $100 sale and across $250,000 in annual card volume.
| Pricing model | How it works | Effective rate (typical) | Transparency | Best fit |
|---|---|---|---|---|
| Interchange-plus | Interchange + assessments + fixed markup (e.g. 0.30% + $0.10) | 2.1% to 2.5% | High, itemized | Most established businesses |
| Flat rate (aggregator) | One blended rate (e.g. 2.6% + $0.10, Square style) | 2.6% to 2.9% | Medium, simple | Low-volume or new businesses |
| Tiered | Qualified / mid / non-qualified buckets | 2.5% to 3.5%+ | Low, opaque | Rarely the best deal |
Interchange-plus is the model ProTech recommends for most merchants because the markup is visible and stays fixed while interchange passes through at cost. Our interchange-plus pricing explained guide shows how to read it on a statement. Tiered pricing hides margin inside vague qualification tiers and usually costs the most.
Merchant account vs payment gateway vs aggregator
A merchant account, a payment gateway, and a payment aggregator solve different problems, and confusing them leads to wrong purchases. A merchant account holds and settles funds. A payment gateway is the software that transmits card data securely for online or virtual transactions. An aggregator (Square, Stripe, PayPal) bundles thousands of sub-merchants under one shared master account.
When an aggregator makes sense
Aggregators require no underwriting and turn on in minutes, which suits a brand-new business or one processing under $5,000 a month. The tradeoff is stability: aggregators can freeze or hold funds on a risk flag with little notice because you are a sub-merchant, not the account holder. For card-not-present sales online, a dedicated account paired with a gateway and online payments setup gives more control and lower rates at volume.
When a dedicated merchant account wins
Once a business clears roughly $10,000 to $15,000 a month, a dedicated merchant account on interchange-plus almost always beats the aggregator’s flat rate, and it adds direct underwriting so funds are not frozen on an automated flag. For a structured decision framework, read choosing a payment processor for small business.
How to open a merchant account
Opening a merchant account is an underwriting process, not a sign-up form. A clean application funds within one to three business days; a sloppy one stalls in review. The steps below are what ProTech walks Katy and Houston merchants through.
Documents and underwriting
Have these ready: EIN, business formation documents, a voided check or bank letter for the settlement account, a government ID for the owner, and recent processing statements if you are switching. The acquirer reviews your industry (MCC code), expected volume, average ticket, and chargeback history. Honest volume estimates matter because lowballing them triggers holds when you exceed your stated limit.
Equipment and integration
Match hardware to your model. A retail counter needs a countertop terminal or in-store payments station, a service tech needs mobile payments, a phone or mail-order office needs a virtual terminal, and an e-commerce site needs a gateway. ProTech also offers equipment financing so a multi-station Clover deployment does not require paying for hardware upfront.
Pick your local setup
Service area and same-day local support matter for terminal swaps and staff training. ProTech runs full merchant services in Katy, TX and across Houston, with industry-specific setups for restaurants, retail, and auto repair shops.
Common mistakes that cost Texas businesses money
Most overpaying comes from a handful of avoidable errors. Each one is fixable, and ProTech’s free statement analysis surfaces them in minutes.
Signing tiered or three-year locked contracts
Tiered pricing and long contracts with early-termination fees are the two most expensive traps. A non-qualified tier can push a rewards card to over 3.5%, and a $495 cancellation fee locks you in while the rate creeps up. Insist on interchange-plus and month-to-month terms.
Ignoring PCI and chargebacks
Skipping PCI validation triggers monthly non-compliance fees and exposes you to breach liability. Letting chargebacks pile up past 1% of transactions can flag your account for review or termination. A chargeback management process and a chargeback prevention playbook keep that ratio down.
Mismatching the account to the business
A high-volume B2B distributor on a flat-rate aggregator overpays badly, while a brand-new shop forced onto a complex contract overcomplicates. Level-2 and level-3 data on B2B and wholesale accounts can cut interchange on commercial cards, a saving most generic accounts never capture.
Frequently asked questions
Is a merchant account the same as a business bank account?
No. A business bank account holds your operating funds. A merchant account is a separate, underwritten account that accepts card authorizations, deducts processing fees, and then settles the net deposit into your business bank account. You need both.
How long does approval take?
A standard low-risk application with complete documents is usually approved and funded within one to three business days. High-risk industries or incomplete paperwork can extend underwriting to a week or more, which is why accurate documents and honest volume estimates speed things up.
How much does a merchant account cost?
Expect an effective rate of roughly 2.1% to 2.9% depending on pricing model, card mix, and whether sales are card-present or keyed. On interchange-plus you pay wholesale interchange (around 1.8% on a typical credit sale) plus a fixed markup, plus monthly account and PCI fees. A dual pricing or cash discount program can reduce the merchant’s net cost close to zero.
Can I lower my fees with dual pricing in Texas?
Yes. Texas law permits passing card costs to customers when the price difference is disclosed clearly at the point of sale and on receipts. A compliant cash discount program in Texas lets cash and debit customers pay the lower price while card users cover the processing cost.
What happens if my chargeback ratio gets too high?
Card networks expect chargebacks below 1% of transactions. Sustained ratios above that trigger monitoring programs, fines, reserves, or account termination. Prompt refunds, clear billing descriptors, and a documented dispute-response process keep the ratio in safe range.
Do I need a merchant account if I only sell online?
Yes, unless you use an aggregator like Stripe or PayPal. For meaningful online volume a dedicated merchant account paired with a payment gateway gives lower rates and direct underwriting, so funds are less likely to be held than under a shared aggregator account.
Talk to ProTech Payments
A merchant account is the engine behind every card sale your business makes, and the difference between a fair account and an inflated one shows up directly in your monthly deposits. ProTech Payments builds and prices merchant accounts for Katy, Houston, and Fort Bend County businesses on transparent interchange-plus terms, with local support and EMV-ready hardware.
Start with a free statement analysis to see your current effective rate and exactly where the markup hides, then get started when you are ready to switch and lock in a better rate.
