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Commercial Merchant Agreement Addendum

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Commercial Merchant Agreement Addendum

This Addendum to the Commercial Merchant Agreement (the "Addendum") is made as of Effective Date: by and between Merchant Name: , an entity organized under the laws of with principal place of business at (hereinafter "Merchant"), and Processor Name: , an entity organized under the laws of with principal place of business at (hereinafter "Processor").

RECITALS

WHEREAS, Merchant and Processor entered into a Commercial Merchant Agreement dated (the "Agreement"); and

WHEREAS, the parties desire to modify certain terms of the Agreement as set forth in this Addendum to reflect updated operational, fee and compliance requirements; and

WHEREAS, the parties intend that this Addendum be incorporated into, and form part of, the Agreement.

NOW, THEREFORE, in consideration of the mutual promises and covenants contained herein and other good and valuable consideration, the receipt of which is acknowledged, the parties agree as follows:

1. DEFINITIONS

Capitalized terms used but not otherwise defined in this Addendum shall have the meanings assigned to them in the Agreement. For purposes of this Addendum, the following definitions apply where applicable: "Card Brand" means any card network, scheme or brand accepted by Merchant; "PCI Requirements" means the Payment Card Industry Data Security Standard and any related rules applicable to the handling of payment card data.

2. AMENDMENT TO FEES AND CHARGES

The Agreement is amended such that Merchant shall pay Processor the following fees in lieu of any prior fee schedule: Processing Rate: ; Per-Transaction Fee: $ ; Monthly Service Fee: $ . All other fees not expressly replaced remain in full force and effect.

3. TERM; EFFECTIVE DATE

This Addendum shall be effective as of the Effective Date set forth above and shall continue for the remaining term of the Agreement unless earlier terminated in accordance with the Agreement or this Addendum. To the extent of any conflict between this Addendum and the Agreement, the terms of this Addendum shall prevail.

4. MERCHANT OBLIGATIONS

Merchant represents and warrants that it will: (a) comply with all Card Brand rules and PCI Requirements; (b) maintain accurate business and banking information on file with Processor; and (c) not engage in any high-risk or prohibited activities as defined in the Agreement. Merchant shall promptly notify Processor in writing of any material change to Merchant's business operations, ownership, or processing volumes.

5. PROCESSOR OBLIGATIONS

Processor shall provide transaction processing services in accordance with applicable industry standards and the Agreement, including settlement, chargeback handling and reporting. Processor shall maintain commercially reasonable security measures and shall notify Merchant within seven (7) business days of becoming aware of any security incident materially affecting Merchant data.

6. CONFIDENTIALITY

Each party shall hold in confidence and not disclose any Confidential Information of the other party except as required to perform its obligations under this Addendum or as required by law. "Confidential Information" includes non-public business, technical, and financial information, and cardholder data. The parties agree to restrict access to Confidential Information to employees, agents or contractors with a need to know and who are bound by confidentiality obligations at least as protective as those herein.

7. INDEMNIFICATION

Merchant shall indemnify, defend and hold harmless Processor and its affiliates, officers and employees from and against any claims, losses, liabilities, damages and expenses (including reasonable attorneys' fees) arising out of Merchant's breach of the Agreement, Merchant's failure to comply with Card Brand rules or PCI Requirements, or Merchant's improper business practices. Processor shall indemnify Merchant for Processor's gross negligence or willful misconduct in performing processing services under the Agreement.

8. LIMITATION OF LIABILITY

Except for liability arising from willful misconduct, gross negligence, or indemnifiable claims under Section 7, neither party shall be liable to the other for consequential, incidental, special or punitive damages, and each party's aggregate liability shall be limited to direct damages not to exceed the lesser of (a) the fees paid or payable under the Agreement in the twelve (12) months preceding the event giving rise to the claim, or (b) $ .

9. TERMINATION

Either party may terminate this Addendum to the extent permitted by the Agreement. Termination of the Agreement shall automatically terminate this Addendum. Upon termination, Merchant shall remain liable for any charges or obligations incurred prior to the effective date of termination, including chargebacks and fees.

10. NOTICES

11. ATTACHMENTS; SCOPE

The following attachments, if checked, are incorporated into this Addendum and form part of the Agreement:



12. AMENDMENTS; WAIVER

Except as expressly modified herein, all terms of the Agreement remain unchanged and in full force. No amendment, modification or waiver of any provision of this Addendum shall be effective unless in writing and signed by authorized representatives of both parties. Failure or delay by either party to enforce any right shall not constitute a waiver of such right.

13. COUNTERPARTS

This Addendum may be executed in counterparts, each of which shall be considered an original, and all of which together shall constitute one and the same instrument. Signatures transmitted by electronic means shall be binding and enforceable.

14. GOVERNING LAW

This Addendum shall be governed by and construed in accordance with the laws of the state of without regard to conflicts of law principles.

15. ENTIRE AGREEMENT

This Addendum, together with the Agreement and any attachments expressly incorporated herein, constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior and contemporaneous agreements, understandings and negotiations, whether written or oral, relating thereto.

16. SEVERABILITY

If any provision of this Addendum is held to be invalid, illegal or unenforceable by a court of competent jurisdiction, the remaining provisions shall continue in full force and effect and the parties shall negotiate in good faith to replace the invalid provision with a valid provision that achieves, to the extent possible, the economic, legal and commercial objectives of the invalid provision.

CERTIFICATION

Each representative signing below certifies that he or she is authorized to execute this Addendum on behalf of the party for which they sign and that the information provided in this Addendum is true and correct to the best of their knowledge.

Merchant:

By:

Date:

Processor:

By:

Date:

Enter text✕

What the Commercial Merchant Agreement Addendum Is

A Commercial Merchant Agreement Addendum is a supplemental document that modifies, clarifies, or extends terms in a primary merchant agreement between a commercial seller and a payment processor, acquiring bank, or other contract counterparty. It records changes such as revised pricing, additional services, risk allocation, or compliance provisions without replacing the original agreement. Addenda are commonly used to document short-term amendments, add exhibit-level details, or incorporate regulatory or product updates while preserving the base contract’s signature and effective-date framework.

Why an Addendum Matters for Commercial Merchant Relationships

A clear, signed addendum provides legal certainty for modifications, reduces disputes over oral changes, and preserves the original agreement while isolating incremental obligations. It enables targeted updates — for pricing, compliance, or service levels — without renegotiating the entire contract.

Why an Addendum Matters for Commercial Merchant Relationships

Who Prepares and Signs This Addendum

Typical preparers include corporate counsel, merchant operations, billing teams, and vendor account managers who need to document contractual changes consistently.

  • Payment processors and acquiring banks — update fee schedules and chargeback procedures.
  • Commercial merchants (finance teams) — record pricing, settlement, and dispute handling changes.
  • Legal and compliance officers — add data-handling or regulatory clauses such as PCI or HIPAA addenda.

Parties should ensure the designated signing authority executes the addendum and that copies are retained with the master agreement for audit and compliance.

Core Elements to Include in a Professional Addendum

A well-drafted addendum isolates changed terms, ties them to the original agreement, and includes execution details so the modification is enforceable and auditable.

Reference

Identify the primary agreement by title, date, and parties so the addendum clearly amends that specific contract and avoids ambiguity.

Amendment Text

State precise edits: which sections are replaced, deleted or supplemented. Use tracked changes or numbered clauses to make the modification explicit.

Effective Date

Specify the date when the amended terms take effect; this determines rights, obligations, billing cycles, and applicable limitations periods.

Consideration

Document any new fees, credits, or service changes supporting the amendment; a clear consideration statement helps enforceability under contract law.

Signatory Authority

Include the names, titles, and capacity of signers, and confirm that each signer has authority to bind their organization.

Integration

State that all other terms of the original agreement remain in force except as expressly changed by the addendum.

Step-by-Step: How to Complete and Execute the Addendum

Follow a standard sequence to prepare, approve, and sign the addendum so changes are enforceable and traceable.

  • 01
    Draft: Prepare amendment text tied to specific contract sections.
  • 02
    Internal Review: Route to legal, finance, and operations for approval.
  • 03
    Sign: Obtain signatures from authorized representatives.
  • 04
    Distribute: Share executed copies with all parties and file with the master agreement.

How to Configure an Online Workflow for the Addendum

Standardize the digital workflow to reduce errors and ensure every required approver sees the document in the correct order.

Field Configuration | Role or option
Authentication Email or SMS code | Choose per risk profile
Signature Type eSignature | ESIGN/UETA-compliant electronic signature
Attachments Allowed formats | PDF, DOCX; include exhibits
Notifications Reminders | Automatic email reminders and status updates

Typical Digital Signing Flow for an Addendum

A predictable online flow ensures auditability and reduces signer friction when amending merchant agreements.

  • Upload: Upload master agreement reference and addendum.
  • Place Fields: Add signature, date, and initial fields where required.
  • Send: Deliver to signers with defined signing order.
  • Complete: Capture signatures, timestamp, and audit trail.

Digital Signing and Technical Requirements

Ensure the signing platform supports required file formats, audit trails, and the level of signer authentication needed for your risk profile.

  • File Formats: PDF, DOCX supported
  • Authentication: Email, SMS, or advanced MFA
  • Integrations: CRM and ERP connectivity

Confirm the vendor provides tamper-evident signed documents, exportable audit logs, and integration options with systems such as Salesforce, NetSuite, or Google Workspace.

eSignature Vendor Comparison for Signing Addenda

Compare common vendor attributes relevant to executing Commercial Merchant Agreement Addenda; signNow is listed first per platform comparison conventions.

signNow DocuSign Adobe Sign PandaDoc HelloSign
Starting Price $8/user/mo $15/user/mo $14/user/mo $19/user/mo $15/user/mo
Free Trial 7-day free trial Varies by vendor Varies by vendor Varies by vendor Varies by vendor
Bulk Send Yes (Premium) Yes Yes Yes No
Audit Trail Yes Yes Yes Yes Yes
HIPAA Compliant Yes Yes Yes No No
Envelope Cap No envelope cap 100 envelopes/user/year Varies by plan Varies by plan Varies by plan

Security, Encryption, and Compliance Notes

In-Transit Encryption: TLS 1.2/1.3
At-Rest Encryption: AES-256
Audit Standards: SOC 2 Type II
Regulatory Compliance: ESIGN and UETA compliant
Healthcare Compliance: HIPAA (BAA required)
Industry Certifications: PCI DSS and ISO 27001

Key Risks and Regulatory Penalties to Watch

1099 Penalties: $60–$330 per form depending on lateness
Intentional Disregard: $660+ per form with no max
I-9 Violations: $281–$2,789 per violation
Backup Withholding: 24% withholding triggered by incorrect TIN
Notarization Errors: May void acknowledgement or add evidentiary hurdles
Data Breach Risk: Regulatory fines and remediation costs

Common Preparation Mistakes to Avoid

  • Ambiguous amendment language that fails to identify the specific clause being changed, which causes interpretation disputes and increases litigation risk.
  • Mismatched party names or variations in legal entity names between the master agreement and addendum, which can render the modification unenforceable.
  • Missing signatory authority or unsigned internal approvals; always confirm corporate signature authority before external execution to avoid invalidation.
  • Failing to attach required exhibits, such as revised fee schedules or compliance certificates, which can leave essential terms undocumented.

Supporting Documents and Export Options

Keep consistent supporting documents and use standard export formats so addenda integrate with accounting, CRM, and archive systems.

Export Formats

Export executed addenda as PDF/A for archival and as signed PDF for audit with embedded certificate and audit trail.

Supporting Docs

Attach fee schedules, insurance certificates, and compliance exhibits to the addendum to create a single record of the change.

Audit Trail

Retain signer timestamps, IP addresses, and access logs to document execution events for disputes and audits.

Record Storage

Store executed files in a secure document repository with versioning and access controls for retention compliance.

Practical Tips for Accurate, Efficient Completion

Apply standard controls and templates to reduce review cycles and ensure consistency across amendments.

Use Standard Templates
Maintain a single approved addendum template to minimize drafting errors and accelerate internal approvals.
Confirm Authority
Verify signer authority and include title lines; obtain corporate approvals before sending for signature to prevent re-execution.
Attach Exhibits
Include revised fee schedules or technical specifications as exhibits so essential terms are not omitted unintentionally.
Preserve Audit Trail
Use an eSignature solution that captures timestamps, IP addresses, and access logs for evidentiary integrity.

Real-World Examples of Addendum Use

Two customer scenarios illustrate practical uses of addenda for merchants and enterprises modifying existing agreements.

Optica Ventures Example

Optica needed to update settlement timing for a new product line

  • The change clarified net settlement days and dispute windows
  • The executed addendum preserved the master agreement while enabling new operational billing without renegotiating all terms.

Fertility Centers Example

A healthcare provider added a PHI processing addendum to its merchant contract

  • The addendum included BAA language and limited data flows
  • This ensured compliance with HIPAA and allowed continued electronic payments with explicit data-handling controls.

Timing and Processing Expectations

Understand statutory and administrative deadlines that affect related filings, tax reporting, and record retention after executing an addendum.

Provide W-9 on Request:

No fixed federal deadline; supply to payer when requested.

1099-NEC to Recipient:

Due by January 31 each year (recipient copy).

1099-MISC to IRS (paper):

Paper submissions typically due by February 28.

1040 Individual Tax Return:

Due April 15 (extension to October 15 with Form 4868).

Record Retention Start:

Retention measured from creation or filing date per rule.

Frequently Asked Questions About the Addendum

Answers to common legal, execution, and technical questions help reduce uncertainty when preparing and signing a Commercial Merchant Agreement Addendum.


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