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Legal Additional Agreement

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LEGAL ADDITIONAL AGREEMENT

This Additional Agreement (the "Agreement") is made as of Effective Date: by and between Party A Name: with principal address ("Party A"), and Party B Name: with principal address ("Party B"). This Agreement supplements and amends the Original Agreement titled dated (the "Original Agreement").

RECITALS

WHEREAS, Party A and Party B entered into the Original Agreement identified above and wish to modify certain terms of the Original Agreement as set forth herein; and

WHEREAS, the parties desire to set forth the additional terms, obligations and modifications in writing to avoid ambiguity and to preserve their respective rights under the Original Agreement; and

WHEREAS, capitalized terms used and not otherwise defined in this Agreement shall have the meanings assigned to them in the Original Agreement unless otherwise provided herein.

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

1. DEFINITIONS

1.1 Definitions. For purposes of this Agreement, unless the context otherwise requires, the terms defined in the Original Agreement shall have the same meanings when used in this Agreement. In addition, "Effective Date" means the date first written above.

2. AMENDMENTS TO ORIGINAL AGREEMENT

2.1 Amendment to Section: The parties hereby amend Section of the Original Agreement. The existing text of that section is deleted in its entirety and replaced with the following:

2.2 New Section. The Original Agreement is hereby supplemented by adding the following new section:

2.3 Conflicts. In the event of any conflict between the terms of this Agreement and the Original Agreement, the terms of this Agreement shall control solely with respect to the matters expressly amended herein.

3. CONSIDERATION

3.1 Consideration. In consideration for the modifications set forth in this Agreement, Party B shall pay Party A the sum of payable in accordance with the payment schedule set forth below or as otherwise mutually agreed in writing.

4. CONFIDENTIALITY

4.1 Confidential Information. All information disclosed by either party in connection with the Original Agreement or this Agreement that is designated as confidential or that reasonably should be understood to be confidential shall remain subject to the confidentiality obligations set forth in the Original Agreement. The parties reaffirm and continue such obligations.

4.2 Survival. The confidentiality obligations shall survive termination or expiration of the Original Agreement and this Agreement for the period specified therein.

5. REPRESENTATIONS AND WARRANTIES

5.1 Each party represents and warrants that it has the full power and authority to enter into and perform its obligations under this Agreement, that the Agreement has been duly authorized by all necessary corporate or other action, and that the Agreement constitutes a valid and binding obligation enforceable in accordance with its terms.

6. INDEMNIFICATION

6.1 Indemnity. Each party shall indemnify, defend and hold harmless the other party and its officers, directors, employees and agents from and against any and all losses, liabilities, claims, damages and expenses (including reasonable attorneys' fees) arising out of or relating to any breach by the indemnifying party of this Agreement or the Original Agreement, to the extent attributable to the indemnifying party's acts or omissions.

7. TERM AND TERMINATION

7.1 Term. Except as expressly modified by this Agreement, the term of the Original Agreement shall remain unchanged. The amendments contained herein shall become effective as of the Effective Date and shall continue for the remaining term of the Original Agreement unless earlier terminated in accordance with its terms.

7.2 Termination Rights. Termination of the Original Agreement shall also terminate this Agreement; however any obligation intended to survive termination shall survive in accordance with its terms.

8. NOTICES

8.1 Notice Addresses. All notices, requests, consents and other communications required or permitted under this Agreement shall be in writing and delivered to the addresses set forth below or to such other address as a party may designate by notice in accordance with this Section.

9. GOVERNING LAW

9.1 Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the state of without regard to its conflicts of law principles.

10. ENTIRE AGREEMENT

10.1 Entire Agreement. This Agreement, together with the Original Agreement as modified hereby, constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior and contemporaneous agreements, understandings, negotiations and discussions, both oral and written, of the parties relating to such subject matter.

11. SEVERABILITY

11.1 Severability. If any provision of this Agreement is held to be illegal, invalid or unenforceable, such provision shall be enforced to the fullest extent permitted by applicable law and the remaining provisions shall remain in full force and effect.

12. AMENDMENTS; WAIVER

12.1 Amendments. Any amendment to or modification of this Agreement must be in writing and executed by authorized representatives of both parties.

12.2 Waiver. No waiver by either party of any breach or default hereunder shall be effective unless in writing and signed by the waiving party, and no such waiver shall be deemed a waiver of any subsequent breach or default.

13. COUNTERPARTS; EXECUTION

13.1 Counterparts. This Agreement may be executed in counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. Facsimile or electronically transmitted signatures shall be deemed original signatures for all purposes.

Party A Printed Name:

By:

Date:

Party B Printed Name:

By:

Date:

Enter text✕

What a Legal Additional Agreement Is and When it Applies

A Legal Additional Agreement is a written addendum that modifies, clarifies, or supplements an existing contract by adding terms, obligations, or clarifications without replacing the original agreement. Common uses include extending timelines, adjusting scope, adding indemnities, or documenting negotiated exceptions. It should identify the original contract, state the changes clearly, specify the effective date, and be signed by parties with authority to bind their organizations. Properly executed addenda help prevent ambiguity and preserve the enforceability of the original contract while recording agreed deviations or additional commitments.

Why Use a Legal Additional Agreement

A focused addendum records targeted changes without redrafting the entire contract, reducing administrative work and preserving original contract history.

Why Use a Legal Additional Agreement

Who Typically Prepares and Signs an Addendum

Ensure the signatory has authority under company bylaws or delegation of authority; otherwise the addendum risks invalidation.

  • In-house legal teams and outside counsel reviewing scope or liability changes for clarity and compliance.
  • Procurement and contract managers confirming pricing, delivery dates, or service levels have been adjusted.
  • Company officers or authorized signatories executing the addendum on behalf of the legal entity.

Essential Elements to Include in an Effective Addendum

A professional additional agreement is concise yet complete, referencing the original contract, stating precise changes, and documenting signature details and effective dates.

Reference

Cite the original contract title, effective date, and parties so the addendum links unambiguously to the base agreement.

Scope

Describe exactly which provisions are amended, added, or deleted; attach redline or exhibit when helpful for clarity.

Effective Date

State the date the modification takes effect; indicate if retroactive or prospective and any condition precedent.

Consideration

Record any new payment, credit, or other consideration that supports enforceability under contract law.

Signatures

Provide signature blocks for authorized representatives, printed names, titles, and dates for each party to validate consent.

Miscellaneous

Include governing law, conflict clause (which document controls), and any required notices or delivery instructions.

Required Information Checklist

Party Names: Full legal entity names
Addresses: Street, city, state, ZIP
Contract ID: Original agreement reference
Amendment Text: Precise amendment language
Effective Date: MM/DD/YYYY
Signature Data: Name, title, date

Step-by-Step: How to Complete a Legal Additional Agreement

Follow these steps in order to produce a clear, enforceable addendum that integrates with the original contract.

  • 01
    Identify the Base: Locate the original agreement and note title and date.
  • 02
    Draft Changes: Write exact amendment language or attach a redline.
  • 03
    Confirm Authority: Verify signatory authority and approvals required.
  • 04
    Execute: Have authorized parties sign and date the addendum.

Configuring an Online Workflow for an Addendum

Set up a clear routing flow when sending the addendum electronically so each approver receives the correct fields and order.

Field Configuration
Signer Order Sequential or parallel per approvals
Required Fields Mark names, dates, signatures required
Authentication Email, SMS code, or stronger
Retention Settings Enable audit trail and export options

Typical Electronic Signing Flow

An online signing workflow reduces friction while capturing evidence of consent and identity for the addendum.

  • Upload Document: Sender uploads the base addendum file to the platform.
  • Place Fields: Add signature, date, and optional initial fields.
  • Send to Signers: Platform emails signing links or shares via secure link.
  • Capture Audit Trail: System records timestamps, IP, and actions for proof.

Delivery Options and Platform Capabilities

Ensure chosen methods meet any statutory authentication or notarization requirements applicable to the document.

  • Email Link: Standard method; suitable for low-risk transactions.
  • SMS Code: Adds verification via one-time code for stronger attribution.
  • Remote Notarization: Use RON where notarization is required and state law permits.

Key Risks and Penalties from Errors or Omissions

Unenforceable Change: Ambiguous terms
Unauthorized Signature: No authority
Missing Consideration: Lack of support
Late Filing: Potential fines
HIPAA Violation: Regulatory penalties
Tax Exposure: Reporting penalties

Common Mistakes to Avoid When Preparing an Addendum

  • Failing to reference the original contract precisely, which can create ambiguity about what is being amended and who is bound.
  • Using vague language like 'as agreed' without a redline or explicit replacement text, leaving interpretation issues for later dispute.
  • Allowing an unauthorized signer to execute the addendum, which risks invalidation and subsequent challenge to enforceability.
  • Overlooking statutory requirements such as notarization, witness signatures, or consumer disclosures that certain states or industries require.

Timing and Deadlines to Consider

Track execution, filing, and reporting deadlines to avoid compliance gaps or penalty exposure when the addendum changes key dates or payments.

Effective Date:

Specify MM/DD/YYYY to avoid ambiguity on when obligations start

Provide Upon Request:

Deliver updated W-9 or tax forms to payers as required

Tax Reporting Dates:

1099-NEC to recipient and IRS due Jan 31 annually

Notarization Timing:

Notarize before filing or recording where state law requires

Record Retention Start:

Retention begins at creation or last effective date

Sample eSignature Vendor Comparison for Executing an Addendum

Platform selection affects authentication, audit trail, HIPAA support, and cost; signNow is listed first per comparator format.

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 trial Varies by offer Varies by offer Varies by offer Varies by offer
Bulk Send Yes Yes Yes Yes Varies
Audit Trail Yes Yes Yes Yes Yes
HIPAA Compliant Yes Yes Yes No No

Frequently Asked Questions About Legal Additional Agreements

Answers to common questions about enforceability, notarization, amendment, and electronic execution of addenda.


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