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Professional Services Provision Addendum

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PROFESSIONAL SERVICES PROVISION ADDENDUM

This Professional Services Provision Addendum (the "Addendum") is made and entered into as of Effective Date: , by and between Client Name: , with principal address ("Client"), and Service Provider Name: , with principal address ("Provider").

RECITALS

WHEREAS, Client and Provider are parties to an existing agreement governing professional services (the "Underlying Agreement"), dated , , under which Provider furnishes certain services to Client;

WHEREAS, the parties desire to amend and clarify the nature, scope, and administrative terms governing the provision of specified professional services;

WHEREAS, the parties intend that the terms of this Addendum supplement and govern the specific services described herein without negating any unrelated provisions of the Underlying Agreement except as expressly modified.

NOW, THEREFORE, in consideration of the mutual covenants contained herein, the parties agree as follows:

1. SCOPE OF SERVICES

1.1 Provider shall perform the professional services described in the Services Description below (the "Services"). Provider shall provide the Services in accordance with professional standards generally applicable to comparable services and shall use personnel with appropriate qualifications and experience.

2. TERM AND TERMINATION

2.1 This Addendum shall commence on the Effective Date and shall continue for the period set forth below unless earlier terminated in accordance with this Addendum. The initial term shall be: .

2.2 Either party may terminate this Addendum for convenience upon days' prior written notice to the other party. Termination for cause may be effected immediately upon written notice if the other party materially breaches any obligation and fails to cure within thirty (30) days after receipt of notice specifying the breach.

3. COMPENSATION AND PAYMENT

3.1 Compensation for the Services shall be as set forth below. Unless otherwise agreed, Provider shall invoice Client for services rendered and reimbursable expenses in accordance with the invoicing schedule.

3.2 Client shall pay undisputed invoices within the payment term. Disputes must be raised within fifteen (15) days of invoice receipt. Late payments shall accrue interest at the lesser of 1.5% per month or the maximum amount permitted by law.

4. CHANGE ORDERS

4.1 Any change to the scope, schedule, or price shall be documented in a written change order signed by authorized representatives of both parties. Provider shall not be obligated to commence work subject to a change order until the parties have agreed in writing on any adjustment to fees or schedule.

5. CONFIDENTIALITY

5.1 Each party acknowledges that during the term it may receive Confidential Information of the other party. "Confidential Information" means nonpublic information designated as confidential or that reasonably should be understood to be confidential. Each party agrees to: (a) use Confidential Information solely to perform under this Addendum; (b) restrict disclosure to those employees, agents, and subcontractors who need to know and who are bound by confidentiality obligations at least as protective as those in this Addendum; and (c) take reasonable measures to protect such information from unauthorized disclosure. Confidential Information shall not include information that is or becomes publicly available other than through a breach of this Addendum or is independently developed without use of the disclosing party's Confidential Information.

6. INTELLECTUAL PROPERTY

6.1 Ownership of Deliverables. Except as expressly set forth in this Addendum, Provider assigns to Client all right, title and interest in and to deliverables specifically prepared for Client under this Addendum (the "Deliverables"), subject to Client's full payment of all amounts due. Provider retains ownership of its pre-existing intellectual property and general methodologies. To the extent any Provider pre-existing materials are incorporated into a Deliverable, Provider grants Client a non-exclusive, perpetual, worldwide license to use such incorporated materials solely as part of the Deliverable.

6.2 Third-Party Materials. Provider shall obtain and maintain any third-party licenses necessary for Client's use of Deliverables. Provider represents that, to the best of its knowledge, the Deliverables will not infringe third-party intellectual property rights.

7. WARRANTIES; DISCLAIMER

7.1 Provider warrants that the Services will be performed in a professional and workmanlike manner consistent with industry standards. For any breach of this warranty, Provider's sole obligation and Client's exclusive remedy shall be re-performance of the nonconforming Services or, if Provider cannot substantially correct the deficiency, a refund of amounts paid by Client for the deficient Services.

7.2 EXCEPT AS EXPRESSLY PROVIDED IN SECTION 7.1, PROVIDER DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.

8. INDEMNIFICATION

8.1 Provider shall indemnify, defend and hold harmless Client and its officers, directors and employees from and against any third-party claims, liabilities, losses, damages and expenses (including reasonable attorneys' fees) arising out of Provider's negligent acts, willful misconduct, or breach of this Addendum, including any claim of intellectual property infringement attributable to the Deliverables, provided that Client gives prompt written notice of such claim and cooperates in the defense.

9. LIMITATION OF LIABILITY

9.1 EXCEPT FOR A PARTY'S INDEMNIFICATION OBLIGATIONS OR A PARTY'S WILLFUL MISCONDUCT, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL OR PUNITIVE DAMAGES, INCLUDING LOST PROFITS, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. PROVIDER'S AGGREGATE LIABILITY ARISING OUT OF OR RELATED TO THIS ADDENDUM SHALL NOT EXCEED THE AMOUNTS PAID BY CLIENT TO PROVIDER FOR THE SERVICES GIVING RISE TO THE CLAIM DURING THE TWELVE (12) MONTHS PRECEDING THE EVENT GIVING RISE TO LIABILITY.

10. INSURANCE

10.1 Provider shall maintain at its expense insurance coverage customary for the industry and sufficient to cover its liabilities under this Addendum, including professional liability/errors & omissions coverage and general commercial liability. Minimum limits (or equivalent) shall be:

11. NOTICES

11.1 All notices required or permitted under this Addendum shall be in writing and delivered to the addresses below by certified mail, commercial overnight courier, or personal delivery, and shall be deemed given upon receipt.

12. AMENDMENTS; WAIVER

12.1 This Addendum may be amended only by a written instrument signed by authorized representatives of both parties. No failure or delay by either party in exercising any right shall operate as a waiver of that right, nor shall any single or partial exercise preclude any other exercise.

13. GOVERNING LAW

13.1 This Addendum shall be governed by and construed in accordance with the laws of the State of without regard to its conflict of laws principles.

14. ENTIRE AGREEMENT; SEVERABILITY

14.1 This Addendum, together with the Underlying Agreement, constitutes the entire agreement of the parties with respect to the subject matter hereof and supersedes all prior and contemporaneous agreements and understandings. If any provision of this Addendum is held invalid or unenforceable, the remaining provisions shall continue in full force and effect.

15. COUNTERPARTS

15.1 This Addendum may be executed in counterparts, each of which shall be deemed an original and all of which together shall constitute one instrument. Signatures delivered by electronic means shall be binding and shall have the same effect as original signatures.

Client:

By:

Date:

Service Provider:

By:

Date:

Enter text✕

What the Professional Services Provision Addendum Is

The Professional Services Provision Addendum is a contract attachment that defines the scope, deliverables, performance standards, fees, and client-provider responsibilities for professional services provided under a primary agreement. It clarifies timelines, milestones, payment terms, acceptance criteria, and any service-level expectations or exclusions. Organizations use this addendum to reduce ambiguity, align invoicing with deliverables, and create an auditable record of agreed professional obligations that can be referenced during disputes or audits.

Why this Addendum Matters to Projects and Risk Control

A clear addendum reduces scope creep, aligns expectations between parties, and provides a contractual basis for payments and dispute resolution. It centralizes milestones, acceptance tests, and change-order procedures to protect both the service provider and the client.

Why this Addendum Matters to Projects and Risk Control

Which Roles and Organizations Commonly Use It

The addendum is used by legal teams, procurement, project managers, consultants, and external vendors who deliver billable professional services.

  • Legal and contracting teams: draft and review terms to manage liability and remedies.
  • Project managers: track milestones, deliverables, and acceptance criteria.
  • Finance and procurement: align invoicing, payment schedules, and change orders.

Use the addendum whenever services require formal acceptance criteria, milestone-based billing, or specified performance metrics.

Who Signs and Why

Contract Manager

A contract manager or in-house counsel typically reviews and signs on behalf of the company to accept legal risk and ensure compliance with procurement policies. They confirm that scope, limitations, indemnities, and insurance requirements match organizational standards.

Authorized Signatory

An authorized signatory (officer or delegated manager) signs to bind the organization financially. This signer confirms budget approval, payment authority, and acceptance of service-level obligations described in the addendum.

Core Sections to Expect in the Addendum

A standard Professional Services Provision Addendum contains sections that define scope, deliverables, schedule, pricing, acceptance, and change-order procedures to create a clear project baseline.

Scope of Work

Detailed description of services, tasks, and deliverables with boundaries to limit ambiguity and prevent scope creep.

Deliverables & Schedule

Milestones, delivery dates, and dependencies tied to acceptance criteria and invoicing events.

Payment Terms

Fees, billing schedule (fixed, milestone, time-and-materials), late payment interest, and expense reimbursement rules.

Acceptance Criteria

Testing, review periods, and formal sign-off procedures that trigger final acceptance and final payment.

Change Orders

Procedure for documenting scope changes, pricing adjustments, approval flow, and impact on schedule.

Liability & Insurance

Limitations of liability, indemnities, required insurance coverage, and confidentiality obligations.

Step-by-Step: How to Complete the Addendum

Follow these sequential steps to complete the addendum correctly and ensure efficient approval and payment processing.

  • 01
    Prepare Base Data: Collect entity names, addresses, tax IDs, and SOW exhibits before editing.
  • 02
    Define Scope: Write explicit deliverables and exclusions to prevent misunderstandings.
  • 03
    Set Milestones: Enter dates, acceptance criteria, and invoice triggers tied to deliverables.
  • 04
    Execute Signatures: Obtain authorized signatures and record signature dates for retention.

How the Electronic Workflow Typically Operates

A digital signature workflow streamlines routing, authentication, signing, and final delivery for the addendum.

  • Upload Document: Sender uploads the addendum PDF or DOCX file.
  • Place Fields: Add signature, date, and text fields for each party.
  • Authenticate Signers: Choose email, SMS code, or stronger verification as required.
  • Execute & Archive: Signers complete signing; platform stores audit trail and copies.

Typical Digital Workflow Settings to Configure

Configure settings that match your security and audit requirements before sending the addendum for signature.

Field Configuration
Signer Authentication Email link, SMS code, or KBA based on risk
Reminder Schedule Set automatic reminders and resend intervals
Document Retention Automatic archival and audit logs enabled
Access Controls Restrict download, printing, or delegate signer roles

Technical and Security Considerations for eSubmission

Choose a signing platform that supports required authentication, audit trails, and secure storage for confidential service agreements.

  • Authentication: Email, SMS, KBA, or SSO options
  • Audit Trail: Detailed IP/time stamps required
  • Integrations: CRM or ERP connections available

Ensure the platform meets compliance needs for your industry (for example, HIPAA BAA for healthcare) and retains an exportable certificate of completion.

Security and Compliance Elements to Verify

Encryption: TLS 1.2/1.3; AES-256
Audit Trail: IP, timestamps, event log
BAA Availability: Required for HIPAA workflows
Standards: SOC 2 Type II, ISO 27001
21 CFR Part 11: Support for FDA-regulated records
Accessibility: WCAG 2.0 Level AA

Common Mistakes to Avoid When Preparing the Addendum

  • Leaving vague deliverables that omit acceptance criteria, which invites disputes over whether work was completed satisfactorily.
  • Failing to link payments to specific milestones, causing invoicing disputes and delayed collections.
  • Using informal signer names instead of exact legal entity names, which can break enforcement and tax reporting.
  • Skipping a change-order clause; without it, small scope changes can create unbillable work or conflicts.

Risks and Potential Consequences of Errors

Payment Delay: Disputed invoices
Contract Dispute: Litigation or arbitration
Regulatory Penalties: HIPAA reporting fines
Tax Exposure: Incorrect 1099 reporting
Liability Claims: Uncapped damages risk
Record Loss: Missing audit trail

Typical Deadlines and Timing Expectations

Track milestone due dates, invoice submission windows, and formal acceptance periods to keep payment schedules predictable.

Milestone Delivery:

Due dates listed in MM/DD/YYYY format; tie invoices to completion events.

Invoice Submission:

Submit within 30 days of milestone acceptance unless specified otherwise.

Acceptance Window:

Client has a defined review period (commonly 7–30 days) to raise defects.

Dispute Notice:

Specify notice period (e.g., 10 business days) for rejection or remediation.

Record Retention:

Keep signed addendum and SOW for retention period required by regulation.

Key Milestones from Execution to Closeout

A sequential milestone view helps project teams monitor critical stages and responsibilities during the engagement.

01

Kickoff

Project initiation and delivery of the first SOW items.

02

Interim Reviews

Periodic acceptance checkpoints and progress reporting occur.

03

Final Delivery

All deliverables submitted and final testing completed.

04

Closeout

Final acceptance, invoice settlement, and archival of records.

eSignature Pricing and Feature Snapshot

Comparison of common vendor starter pricing and essential feature availability for signing and managing a Professional Services Provision Addendum.

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, no credit card required Varies by plan Varies by plan Varies by plan Varies by plan
Bulk Send Yes Yes Yes Yes No
Audit Trail Yes Yes Yes Yes Yes
HIPAA Compliant Yes Yes Yes No No

Real-World Scenarios for Using the Addendum

Examples show how organizations tailor the addendum to common project types and commercial needs.

Consulting Engagement

A mid-size firm attaches a detailed SOW with milestone invoicing

  • Milestones tied to acceptance tests
  • The addendum prevented a billing dispute when deliverables were inspected and accepted per defined criteria.

Healthcare Implementation

A clinic required a BAA and phased delivery schedule

  • Phased invoices released after HIPAA-compliant validation
  • The addendum documented compliance obligations and reduced contract review time.

Practical Tips for Accurate and Efficient Completion

Use consistent templates and preserve an audit trail to speed approvals and reduce downstream legal reviews.

Standardize Templates
Use a master addendum template to reduce drafting time and maintain consistent clauses across engagements.
Link Exhibits
Attach SOWs, schedules, and acceptance tests as exhibits to avoid ambiguity in the main addendum.
Use Clear Dates
Specify exact MM/DD/YYYY dates for milestones and invoice triggers to prevent interpretation disputes.
Preserve Audit Trail
Retain signed copies and an electronic certificate of completion that includes IP, timestamp, and signer attribution.

How to Download, Save, and Archive Executed Addenda

After execution, export the signed addendum in a durable format and store copies according to legal and internal retention policies.

PDF/A Export

Save a PDF/A copy to preserve the document and cryptographic signatures for long-term archival and compliance.

Certificate of Completion

Download the platform's audit certificate showing signer identity, IP, and timestamps for evidentiary support.

Cloud Storage

Store signed files in secure cloud repositories with versioning and access controls such as Box or Google Drive.

Local Backup

Keep an encrypted local backup and record retention metadata to meet audit requests.

Frequently Asked Questions about the Addendum

Answers to typical questions about enforceability, execution, notarization, revisions, and digital signing of the Professional Services Provision Addendum.


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