Merrimack Valley CU
Auto & Personal Mortgage & Home Equity Undergraduate, Graduate, & Refi Commercial Loans & Lines

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Home / RTN
MVCU, RTN, Merger, Former RTN members

Welcome to Merrimack Valley Credit Union!

MVCU, RTN, Merger, Former RTN members

Welcome to Merrimack Valley Credit Union!



Welcome Former RTN Federal Credit Union Members

On May 1, 2024, Merrimack Valley Credit Union and RTN Federal Credit Union are consolidating mortgage servicing systems. All Former RTN Members with mortgages have been sent information about the mortgage consolidation and what to expect. If you have questions or need assistance, please contact Member Support at 800-356-0067, option 5.

System Conversion Coming in June

While RTN Federal Credit Union and Merrimack Valley Credit Union became one institution last year, our computer systems did not fully integrate at the time of the merger.  On June 1, 2024, we will complete the final step and consolidate RTN's computer system into the MVCU system.  Once the integration has been completed, the full suite of products and services will be available to all members.

Learn more

Online Banking

To access Online Banking,
please submit your
username and password.

First-time user? Enroll now.

Browser Requirements

Routing Number

Please use the RTN Routing Number when setting up direct deposit or any ACH payment or deposit.


Online Banking

Register for and access online banking right here on this page!


Mobile Banking

Download the Mobile App by clicking the link for your device below:


While you will receive excellent service at all MVCU branches, it may be more convenient for you to visit the branch where you opened your account or a branch operating on the RTN system until the systems have fully merged. Branch locations include Amesbury, Brookline, Danvers, Dorchester, Marlborough, Tewksbury, Waltham, and Worcester, as well as workplace branches at General Dynamics and Raytheon Technologies.

For information and hours, visit our Locations page.


Contact Information

To reach an MVCU representative, please use this information:

You may receive emails regarding your account(s) and/or loan(s) from credit union representatives with emails ending in both and It is ok to respond to those emails.

Accessing Services

Debit and Credit Card Icon

Your Debit & Credit Card

Continue to use your existing card.  To activate and select a PIN for your new or existing ATM/Debit Card, call 800-237-9298.

ATM Icon

ATM Access

Access RTN & MVCU ATMs and surcharge-free ATMs.  Find an ATM near you:

Telephone icon

Important Phone Numbers

To report a lost or stolen RTN Card:
For VISA Credit Card, call 866-820-4849
For ATM/VISA Debit card, call 781-736-9900, option 4 (during normal business hours)


Accessing Products 

Here are some quick links to get you to the banking product you need:

Checking, Savings, & Certificates

  • Visit your usual branch
  • Apply Online as an Existing Member

Auto Loans, Personal Loans, & Credit Cards

Mortgage & Equity

View Rates