Merchant Services

Tidemark has teamed up with MPI to provide an outstanding payment experience to all of our business account members. As a support based ISO, MPI’s team focuses on providing you with service you expect at a rate that you can afford.

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The Best Merchant Services
For Your Company

Credit Card Processing

Credit and debit card payments have become the most common form of payment in the world today. In fact, studies show that customers are more likely to spend more when they are not to using cash. Let Mercantile Processing lnc.'s credit and debit card processing solutions help you capitalize on this opportunity. Weekend funding is now available!

Payroll - Made Easy

Make payroll easy and accurate with M Pl's payroll solution. Enter the hours or the salary, and our system takes care of the rest. Reporting and payment are made to I RS, State, and Unemployment offices. Deductions for employees, including 407k, health insurance, and garnishments, are completed automatically. M Pl payroll is now available for your iPad.

Share Certificates

Make payroll easy and accurate with M Pl's payroll solution. Enter the hours or the salary and our system takes care of the rest. Reporting and payment is made to I RS, State and Unemployment offices. Deductions for employees including 407k, health insurance and garnishments are completed automatically. M Pl payroll now available for your ipad.

Point of Sale Solutions

We provide cloud-based point of sale solutions to merchants in the restaurant, retail, and hospitality industries. Some benefits of cloud-based POS:
  • Affordable up-front cost
  • 24/7 real-time reporting
  • Easy to use
  • Wireless solution

Gift/Loyalty Cards

The goal of any successful business is to keep your customers coming back. We offer gift card and loyalty programs that make it easy.


Give your customers easy access to cash with your own ATM. You can choose from a variety of options and make more sales and generate income through cash access fees.

Casey Fitzgerald

Relationship Manager
Mercantile Processing Inc.
302-524-8000 ext 103
[email protected]

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Savings Goals Within Reach:
Discover Our Best Local Rates

Looking for a checking account with a Tidal Wave of Rewards? Earn up to a $100 a month in rewards.
Not into electronic services? This go-to account is for you.
Need a fresh start? We have an account you.
Make in-store purchases, access money anytime through ATMs and track all activity online while getting rid of paper checks.
When you open your checking account, a set of temporary checks and your first full check order is on us. Reordering is just a click away. If you run out before your next order, we can supply emergency checks at any branch to tide you over.

Special Pricing and Ease Of Ordering

Reorder checks 24/7 by clicking here; or, if you prefer, you can order while in your account in Online Banking or by calling our Member Service Center at (302)-629-0100 during regular business hours. Group discounts apply to all check orders.


Frequently Asked Questions

Plus, You Get Access to Our Member Premium Benefits


You Become a Member-Owner

We don't exist to enhance the wealth of our shareholders, we are member-owned. As a not-for-profit organization, we use our profits to increase Member benefits and support community causes.


Your Money is Insured & Protected

Instead of being covered under FDIC, your deposits are covered under the National Credit Union Administration (NCUA), which insures deposits up to $250,000, the same amount as the FDIC. It’s a different name but the same function.


Your Funds Are Easy to Access

With online and mobile banking, you have access to your account anytime and anywhere from your computer, smartphone, or tablet. Check your account balance, transfer funds, pay bills, and manage your finances easily without going to the bank.