Resource Center

Third-Party Senders and Processors play a critical role in electronic payment services. It is a challenging business and organizations are working hard to remain compliant.
This Resource Center contains WesPay’s full range of products and services for Third-Party Senders and Processors and their ODFIs to help deal with the growing complexities of regulatory and rules requirements for processing ACH transactions.

Our services include the following:

What is a Third-Party?

Third-Party Sender

Acts as an intermediary in transmitting entries between an originator and an Originating Depository Financial Institution (ODFI), and/or acts on behalf of an originator or another Third-Party Sender. They are not considered the originator for entries transmitted on behalf of another organization. However, a Third-Party Sender may be an originator in its own right.

Third-Party Service Provider

A Third-Party Service Provider is an organization that performs any functions on behalf of an Originator, Third-Party Sender, Originating Depository Financial Institution (ODFI), or Receiving Depository Financial Institution (RDFI) related to the processing of entries, including creation of files or acting as a Sending or Receiving Point on behalf of a financial institution.

Third-Party Payment Processor

Provides payment processing services to merchants and other businesses. These payment transaction types include credit card, debit and prepaid card, ACH, and remotely created checks transactions.

Third-Party Sender Identification Tool

Still unsure of what a Third-Party is? Nacha has designed a Third-Party Sender Identification Tool to help better understand.


Same Day ACH Phases

Nacha Certified is a voluntary accreditation program for ACH Third-Party Senders to demonstrate it has met Nacha processing standards for risk and compliance, financial stability and governance. Nacha Certification is a symbol to a business’ customers, financial institutions and peers of its of payments processing proficiency and sound oversight controls.

Becoming Nacha Certified demonstrates that as a Third-Party Sender, your company has met Nacha standards that include a solid risk and compliance program, stability, sound governance, and has strong core ACH practices in place.

WesPay Can Help

WesPay’s staff of Accredited ACH Professionals will guide you through the entire process of becoming Nacha Certified. Contact us at (415) 373-1193 or to start the process.

Same Day ACH Phases
  1. As a Third-Party Sender have you conducted your required annual ACH audit?
  2. Do you have a documented required ACH Risk Assessment?
  3. As a financial institution, have you requested proof of your Third-Party Sender’s completed annual ACH audit?

If you answered "no" to any of these questions, we are here to help.

WesPay offers advisory services to keep you in compliance by conducting annual ACH Audit  and ACH Risk Review  services and to document potential strengthening of risk practices, policies and procedures. Remember Third-Party Senders are required to complete an annual ACH audit..


Email or call the Payments Hotline at (415) 373-1200.

Regulatory Compliance Guidance


Nacha published ACH Operations Bulletin #2-2014: ACH Transactions Involving Third-Party Senders and Other Payment Intermediaries. Click here for the full 25-page bulletin. Nacha login is required.

Resources and Tools

Originator Self-Assessment

This tool is an excellent tool for ODFIs and Third-Party Service Providers to be using right now as a tangible demonstration to your auditors and regulators that you are proactively taking steps to train your Originators and help them understand their compliance with the Nacha Operating Rules. View more details about the Self-Assessment and how to attend a demonstration . See how convenient compliance can be!

Third-Party Resource Directory

WesPay frequently receives inquiries from member Third-Party Processors and Third-Party Senders requesting contact information for financial institutions that may be open to having them as a customer. Our Third-Party Resource Directory is for WesPay members. View Directory  (*requires member log in)


Become a WesPay Member Today
Join WesPay  to receive maximum benefit on everything you see here, including industry expert support and reduced pricing on services, events and publications. Contact Member Services, 415-433-1230, for details on how to become a WesPay member today.


Third-Party Sender Roundtable

This informative monthly Roundtable provides a forum for a discussion of payment and regulatory issues impacting third-party senders, third-party processors and their financial institutions. Held on the first Wednesday of the month, the agenda varies each month, and includes WesPay member and industry representatives sharing what is happening in the payments industry from regulatory, operational, and risk perspectives.
Register and Join Us!

Training and Education

We invite you to visit the Learning Center to see all that WesPay offers.
Visit the Learning Center

Publications, Rules, and Customizable Agreements