receives compensation from some of the companies listed on this page. Advertising Disclosure
BDC Hamburger Icon


BDC Logo
Search Icon
Updated May 23, 2024

Merchant One vs. Square Comparison

Which payment processor should you choose for your business: Merchant One or Square?

author image
Jennifer Dublino, Senior Writer & Expert on Business Operations
Verified CheckEditor Verified
Verified Check
Editor Verified
A editor verified this analysis to ensure it meets our standards for accuracy, expertise and integrity.

Table of Contents

Open row
Merchant One logo
Editor's Rating8.9/10
Square logo
Editor's Rating8.4/10

Are you trying to decide which payment processing company will allow you to accept credit cards for the first time or perhaps considering switching payment processing services? Merchant One and Square are both highly rated credit card processing services that enable you to accept credit and debit cards as well as other forms of payment. But which is better? We have compared these two companies side by side so you can make an informed decision.

Merchant One vs. Square

Merchant One vs. Square Highlights 


Merchant One


Monthly fee

$13.95 per month, plus possible early-termination and PCI compliance fees

None for basic plan; more advanced functionality costs between $29 and $69 per month

Payment processing cost

Interchange-plus pricing

0.29% to 1.55% for card-present transactions

0.29% to 1.99% for card-not-present transactions

Card-present transactions 2.6% + $0.10 

Card-not-present transactions: 

Square Invoices or Square Online Store 2.9% + $0.30

Square Online Store Premium 2.6% + $.030

Keyed-in and recurring card-on-file transactions  3.5% + $0.15

Ease of use (software)

Easy and intuitive

Easy and intuitive; industry-specific versions available for restaurants and retailers

POS system (hardware)

Third-party hardware, including Clover products that can be used with other processors

Attractive and functional, proprietary hardware incompatible with other processors

Customer service

24/7 phone support, plus email and text-based support; dedicated account manager

Phone support weekdays between 6:00 a.m. and 6:00 p.m. PT; email support response 24-48 hours; chat support 7 days a week; social media support and online knowledge base also available

Who Is Merchant One for? 

Merchant One is a general payment processor that can be used by businesses in many different industries. Although it doesn’t have a POS system of its own, it is compatible with and sells Clover hardware, along with a number of other third-party credit card processing equipment. Merchant One excels in two main areas: customer service and processing rates. 

Most credit card processors provide a dedicated account rep only to their higher tier (higher monthly fees and/or higher volume) merchants, whereas with Merchant One, every customer has one. This single point of contact makes it easier to communicate with the company and resolve issues. In addition, it has a 98% approval rate, making it a good choice for business owners with less-than-perfect credit.

Since Merchant One has interchange plus pricing, its processing rates are low. There is no per transaction fee, so it is less expensive for both high-volume and low-volume businesses. However, because it focuses solely on payment processing, it is a better choice for established businesses that are already using comprehensive software to manage inventory, customers and other parts of its business. [Learn more in our comprehensive review of Merchant One.]

Who Is Square for? 

Square was the first payment processor to offer mobile credit card readers and now also has a whole line of proprietary in-store equipment, including attractive and easy-to-use POS hardware and software. If you want a general POS system, it is included in the basic plan for no monthly fee. Other features, such as inventory management, marketing, and payroll and employee scheduling cost extra.

Because there are no monthly fees for the basic plan and it is easy and quick to apply with no credit check or documentation required, Square is a good choice for startup businesses. If you want industry-specific features in your POS, you will need to pay a monthly fee of $29, which gives you access to specialized POS features. The industry-specific POS options provide a robust solution to retail, restaurants and appointment-based businesses at a price that is lower than that of other payment processors. These brick-and-mortar businesses will appreciate the attractive customer-facing hardware options and in-house support. [Learn more in our complete review of Square.]

Merchant One vs. Square Comparison

Here’s how Merchant One and Square stack up on important criteria when choosing a payment processor.

Monthly fee

Merchant One

Merchant One recently increased its monthly fee from $6.95 to $13.95. While this is not an outrageous amount, especially considering the low processing fees, it can make it more difficult for startup businesses to break even in the beginning, when they have little revenue coming in. 


Square’s base plan has no monthly fee and includes a lot of functionality, including general POS, invoicing, virtual terminal, online checkout and employee management. Other payment processors typically charge a fee for these features. There are advanced features at Square that do require a monthly fee, including loyalty programs for $45 per month, email marketing for $15 per month, and payroll, which is $35 per month plus $6 per employee per month.

Best Monthly Fee
In the area of monthly fees, Square is the winner. Its basic plan with no monthly fee has plenty of features and will work for any kind of business. 

Payment processing costs

Merchant One

Merchant One has low interchange-plus pricing. This means there is a small upcharge on top of the rate that is set by and paid to each type of credit card provider (Visa, Mastercard, Discover, etc.). Many other credit card processors, including Square, include the interchange rate and their markup into one combined rate, which is higher than interchange-plus. 

Because merchants have to pay the interchange rate in addition to the Merchant One markup of 0.29% to 1.55% for card-present transactions and .029% to 1.99% for card-not-present transactions, the actual rate paid will be more than the listed rate. For example, at the time of writing, the interchange rate for Visa for a card presented in person at a retailer, performance threshold Preferred/Infinite is 2.10% + $0.10. So a merchant in this category that does business with Merchant One would actually be paying this rate plus Merchant One’s markup, or 2.129% + $0.10, which is still less than Square’s processing rate. 

It is important to note that interchange rates vary based on several factors, including the type of card (Visa or Mastercard), the type of business, whether it is a credit or a debit card, and whether the card is a specialized card, such as a business credit card or a rewards card.

Merchant One FD-130

The FD-130 credit card reader is one of several readers that Merchant One gives new merchants for free when they open a merchant account. Source: Merchant One


Square’s payment processing rate depends on both whether the card is physically present, which is standard, and on the Square service that is used. When a card is tapped, dipped or swiped, the processing fee is 2.6% + $0.10 per transaction. This is the rate regardless of which brand card is used, what type of business it is or any special card characteristics. The flat rate makes it more affordable to accept cards that typically have a higher rate, such as American Express.

For card-not-present transactions, Square charges different rates based on how the charge is processed. For Square Invoices or Square Online Store, the rate is 2.9% + $0.30 per transaction. If you have Square Online Store Premium, you get a lower rate of 2.6% + $0.30 per transaction, and for any transactions that are either keyed in or are for recurring charges with a card on file, the rate is 3.5% + $0.15 per transaction.

Best Payment Processing Costs
Merchant One
On processing rates, Merchant One is the winner since interchange-plus pricing is always lower than flat-rate pricing for processing fees
TipBottom line
Since Square gives you a flat rate, your business can create promotions with premium cards such as American Express and still pay the same for transactions.

Ease of use

Merchant One

We found Merchant One’s back-end software is easy to use and navigate, with clear labeling of sections and functions, allowing you to run reports, use the virtual terminal and add customer information. However, if you have a POS system, this is a separate system from the Merchant One back-end interface, and you will have to switch between them. A benefit of Merchant One is that it offers Clover POS systems, which are some of the best in the industry and also easy to use. For more details on all Clover offers, check out our review of Clover.

Merchant One hardware devices

Merchant One promotes its Clover products, but is also compatible with other readers. Source: Merchant One 


Square’s software is integrated with its general POS system, so you have everything in one interface. We like how Square’s software is intuitive and well designed, so it is simple to use. In addition, it interfaces seamlessly with a number of popular e-commerce platforms, which we find particularly helpful for those without technical skills.

Square interface on a tablet

The Square interface is sleek and simple to navigate. Source: Square 

Best for Ease of Use
Square is the winner for ease of use since all of its associated software is integrated into one easy and intuitive interface. 

POS system (hardware)

Merchant One

If you buy Clover equipment through Merchant One, then you have a nice-looking and fully functional POS system. Its fixed POS terminal, mini tablets and handheld devices are slick and professional and able to do everything you might want, from accepting digital wallets such as Apple Pay to processing NFC payments to taking PIN entry for debit cards. 

One benefit of Clover equipment is that because it is compatible with multiple processors, it enables you to switch to another processor in the future without repurchasing equipment. Merchant One is also able to service all Clover products in-house, which is beneficial. This helps ensure that should you run into an issue, getting it corrected won’t be a problem.


Square’s POS system and equipment are just as attractive and functional as Clover’s. Although it is not compatible with other payment processors, you benefit from having software updates from Square, and it combines all of the payment processing functions, like the virtual terminal and reporting, with the other features. 

Square customer-facing interface

Square offers a sleek customer-facing interface. Source: Square 

Best POS System (Hardware)
For the best POS system, we’re calling this a tie.
Did You Know?Did you know
In 2022, credit card companies increased their interchange rates, which were held steady due to the pandemic.

Customer service 

Merchant One

Merchant One provides 24/7 phone support plus email and text-based support. Most importantly, though, Merchant One gives each merchant a dedicated account manager. We believe this really kicks its customer service up to the next level. We like that each customer has a single point of contact to streamline their communication with the company, resolving problems and answering questions more quickly.


Square has limited hours for phone support: Monday through Friday, 6:00 a.m. to 6:00 p.m. PT. Although these are long hours, they leave out weekends and early morning hours on the East Coast. It also offers email support, with a response expected between 24 and 48 hours, and online chat support seven days a week, from 6:00 a.m. to 6:00 p.m. PT. 

Support is also available over social media, and there is an online knowledge base.

Best for Customer Service
Merchant One
With its dedicated account managers and 24/7 phone support, Merchant One is the clear winner for customer service.

Merchant One vs. Square Summary

Merchant One is best for established and high-volume businesses.

  • Merchant One’s interchange-plus pricing makes it less expensive for high-volume businesses to process payments.
  • The ability to have a dedicated account rep helps more complex and busy businesses quickly iron out any problems.
  • Merchant One software can be used by businesses in any industry.
  • There is no online merchant application (you need to talk to a sales rep to apply), but once it’s submitted, approval is likely and quick. 

Square is best for startups, particularly retailers and restaurants.

  • Square has a very easy online application with nearly guaranteed approval.
  • There is no monthly fee, making it less expensive to get started with payment processing.
  • Square includes a lot of software features in its free plan, and it offers industry-specific POS systems for retail and restaurant businesses at an affordable price.
  • Square’s hardware is affordable, attractive and highly functional.


Which has a quicker payout, Merchant One or Square?

You can get a payout from Square in one to two business days for transactions recorded between Monday and Thursday. You also have the option to get an immediate payout for a 1.5% fee. With Merchant One, payouts happen in two to three business days. Next-day deposits are available for an additional, but undisclosed, fee.

Do all merchants get the same processing rates?

Generally speaking, Square charges a flat rate for all merchants. If you feel your business deserves a lower rate, you can get a custom quote. With Merchant One, your actual processing rate depends on a variety of factors, such as monthly volume, payment types accepted, ticket sizes and equipment needed. It also varies according to the interchange rate for the particular card used.

Does either company accept business in high-risk industries? 

Both Merchant One and Square are good choices if you are in an industry that is considered to be high risk. They both have high acceptance rates, but Square is probably slightly easier to get approved by since the company doesn’t ask for any documentation when you apply for a merchant account. 

author image
Jennifer Dublino, Senior Writer & Expert on Business Operations
Jennifer Dublino is an experienced entrepreneur and astute marketing strategist. With over three decades of industry experience, she has been a guiding force for many businesses, offering invaluable expertise in market research, strategic planning, budget allocation, lead generation and beyond. Earlier in her career, Dublino established, nurtured and successfully sold her own marketing firm. Dublino, who has a bachelor's degree in business administration and an MBA in marketing and finance, also served as the chief operating officer of the Scent Marketing Institute, showcasing her ability to navigate diverse sectors within the marketing landscape. Over the years, Dublino has amassed a comprehensive understanding of business operations across a wide array of areas, ranging from credit card processing to compensation management. Her insights and expertise have earned her recognition, with her contributions quoted in reputable publications such as Reuters, Adweek, AdAge and others.
BDC Logo

Get Weekly 5-Minute Business Advice

B. newsletter is your digest of bite-sized news, thought & brand leadership, and entertainment. All in one email.

Back to top