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CPA Engagement Letter

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CPA ENGAGEMENT LETTER

Date:

Parties

Engagement and Scope

This engagement letter confirms the terms under which will provide professional accounting and tax services to the Client. The services to be provided are limited to those expressly described below and to those subsequently agreed in writing.

Services to be provided (check all applicable):

Tax return preparation (individual/corporate/partnership)

Bookkeeping and accounting support

Compilation of financial statements

Review of financial statements

Audit services (subject to separate engagement letter and additional terms)

Payroll services and payroll tax filings

Advisory or consulting services

Client Responsibilities

The Client is responsible for providing complete and accurate records, documentation and information necessary for the CPA to perform the engagement. The Client certifies that all information provided to the CPA will be true, complete, and correct to the best of the Client's knowledge, and will retain originals of records and supporting documentation. The Client authorizes the CPA to obtain additional information from third parties when necessary to complete the engagement.

Fees, Billing and Payment

Fees for services are based on the complexity of the work, time required, and professional rates in effect at the time services are rendered. The CPA will provide an estimate when requested; estimates are not guarantees. The Client will be billed for professional time at the rates below, for any out-of-pocket expenses, and for applicable taxes or assessments.

Late payments are subject to a finance charge of the lesser of 1.5% per month or the maximum rate permitted by applicable law, together with collection costs and attorney's fees incurred to collect unpaid amounts.

Expenses

The Client will reimburse the CPA for reasonable out-of-pocket expenses incurred in connection with the engagement, including but not limited to travel, courier and delivery charges, third-party report fees, filing fees, and data processing costs.

Deliverables and Timing

Confidentiality and Use of Information

The CPA will maintain the confidentiality of Client information in accordance with professional standards and applicable law. The CPA may disclose confidential information to the extent required by law, professional obligations, or with the Client's written consent. The Client consents to the CPA's limited use of non-identifying aggregate information for internal quality control and benchmarking purposes.

Records and Retention

The Client is responsible for maintaining adequate documentation and original records supporting information supplied to the CPA. The CPA may retain copies of Client documents and work papers for the CPA's records in accordance with professional practice standards.

Limitation of Liability and Indemnification

The CPA's liability for any claim arising from the performance of services under this engagement will be limited to direct damages not to exceed the total fees paid by the Client to the CPA under this engagement, except to the extent prohibited by law. The Client agrees to indemnify and hold harmless the CPA from liabilities, losses, claims, or expenses arising from information supplied by the Client or third-party reliance on Client-prepared information, except to the extent caused by the CPA's gross negligence or willful misconduct.

Professional Standards and Reliance

The CPA will perform services in accordance with applicable professional standards. Any findings, opinions or conclusions expressed by the CPA are based on information provided by the Client and other parties and may be relied upon by the Client for the Client's internal purposes only, unless other reliance is explicitly agreed in writing.

Termination

Either party may terminate this engagement upon written notice. The Client will be responsible for payment of all fees and expenses incurred through the date of termination and for reasonable costs associated with orderly transition of work in process.

Dispute Resolution and Governing Law

Any dispute arising from or relating to this engagement will be resolved first by good faith negotiation. If unresolved, disputes shall be submitted to non-binding mediation, and if still unresolved, to binding arbitration before a single arbitrator in accordance with the rules of the chosen arbitration forum. The parties agree the engagement will be governed by the laws of the following jurisdiction:

Acknowledgment and Acceptance

Please indicate your acceptance of the terms of this engagement by signing and dating below. This letter, together with any appendices or schedules referenced herein, constitutes the entire agreement between the parties concerning the subject matter of the engagement and supersedes all prior discussions and agreements.

CPA Firm — Printed Name:

By:

Date:

Client — Printed Name:

By:

Date:

Certification: By signing above, the signing party acknowledges and certifies that they are authorized to enter into this engagement on behalf of the party identified, that they have read and understood these terms, and that they agree to be bound by the terms and conditions set forth herein.

Enter text

What a CPA Engagement Letter Is and Why It Matters

A CPA Engagement Letter is a written agreement that defines the scope, responsibilities, fees, and limits of services a certified public accountant will provide to a client. It sets expectations for deliverables, schedules, confidentiality, and reliance on client-supplied information, and documents the legal relationship before substantive work begins. A clear engagement letter reduces misunderstandings, establishes professional standards of care, and can limit exposure for both the CPA firm and the client by confirming assumptions and responsibilities in writing.

Why a Clear CPA Engagement Letter Protects Both Parties

A properly drafted engagement letter clarifies scope, allocation of responsibilities, billing terms, and limits of liability, reducing disputes and professional risk. It also documents client consents and acceptance of terms required by professional standards and regulatory expectations.

Why a Clear CPA Engagement Letter Protects Both Parties

Who Typically Prepares and Signs a CPA Engagement Letter

Engagement letters are used across firms and client types; identify the primary preparer and signer before sending.

  • CPA firm partners and client managers drafting scope and fee terms for business and individual clients.
  • Small-business owners or corporate controllers who must approve fees, timelines, and access to records.
  • In-house counsel or CFOs who review limitation of liability, indemnities, and confidentiality clauses.

Ensure the signer has the authority to bind the client and that key stakeholders receive records of the executed letter.

Step-by-Step: Filling Out the CPA Engagement Letter

Follow these core steps to complete an engagement letter so it provides a clear, enforceable basis for the engagement and minimizes downstream risk.

  • 01
    Identify Parties: Enter full legal names for CPA firm and client exactly as on legal documents.
  • 02
    Define Scope: Describe services, deliverables, and limits in plain language.
  • 03
    Set Fees: Specify fee structure, billing frequency, and expense reimbursement terms.
  • 04
    Sign and Date: Obtain authorized signatures and effective date before work begins.

Key Components to Include in a Professional CPA Engagement Letter

A complete engagement letter typically contains specific sections that define obligations, limits, and administrative details. Include each item below to reduce ambiguity and support enforceability.

Engagement Scope

Clear description of services to be performed, deliverables, and any work specifically excluded from the engagement.

Deliverables & Timing

Milestones, expected delivery dates, and conditions that will delay or extend timelines.

Fees and Expenses

Fee basis (hourly, fixed, contingency), invoicing schedule, payment terms, and reimbursable expenses.

Client Responsibilities

List client obligations such as timely access to records, personnel cooperation, and accuracy of provided information.

Confidentiality

State treatment of confidential information, permitted disclosures, and exceptions required by law or professional standards.

Limitation of Liability

Any disclaimers, caps on damages, or indemnity clauses that allocate risk between firm and client.

Essential Information and Fields to Capture

Client Name: Full legal name
Tax ID: EIN or SSN as required
Scope Summary: Concise scope line
Fee Terms: Rate and billing cycle
Effective Date: MM/DD/YYYY format
Authorized Signer: Name, title, signature

How to Configure an Online Signing Workflow

Set up your digital workflow to collect signatures, route approvals, and capture an audit trail with these standard settings.

Field Configuration
Signer Order Sequential or parallel routing
Authentication Email link, SMS OTP, or KBA
Reminder Schedule Customizable automatic reminders
Audit Trail Timestamp, IP, and action log

Typical Online Execution Flow for an Engagement Letter

A standard eSignature workflow reduces friction and preserves evidentiary data; follow these sequential steps to ensure a defensible execution record.

  • Upload Document: Add the engagement letter in PDF or DOCX format and review fields.
  • Add Signers: Enter signer names, roles, and routing order for approvals.
  • Configure Auth: Choose email link, SMS code, or stronger authentication where required.
  • Send and Track: Dispatch invites, monitor completion, and archive signed copy with audit trail.

Technical Requirements for eSigning and Secure Storage

Confirm the platform supports required authentication, document formats, and retention standards before e-signing sensitive engagement letters.

  • File Formats: PDF and DOCX supported
  • Integrations: CRM and cloud storage links
  • Auth Options: Email, SMS, or KBA

Retain signed documents and associated audit trails in a secure system that supports reproduction for regulatory or dispute purposes.

How signNow Compares on Pricing and Core Capabilities

Below is a concise pricing and feature comparison for common eSignature vendors; signNow appears first per page 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, no credit card Varies Varies Varies Varies
Bulk Send Yes (Business Premium) Yes Yes Yes No
Audit Trail Yes Yes Yes Yes Yes
HIPAA Compliant Yes (BAA available) Yes Yes No No

Risks and Legal Consequences of an Incomplete or Incorrect Letter

Scope Ambiguity: May lead to disputes or fee litigation
Unauthorized Signature: Potential unenforceability and payment delay
Missing Disclosures: Regulatory noncompliance for consumer-facing services
Incorrect Tax Info: Trigger IRS reporting errors or backup withholding
HIPAA Violations: Possible civil penalties without a BAA
Recordkeeping Failures: Evidence loss in audits or litigation

Common Mistakes to Avoid When Preparing an Engagement Letter

  • Using vague language that leaves critical tasks or exclusions undefined, which invites disputes and scope creep.
  • Failing to confirm the signer’s authority to bind the client entity, causing enforceability and billing issues.
  • Omitting billing terms or relying on oral fee estimates that can lead to contested invoices and delayed payment.
  • Not preserving a secure, auditable execution record when signing electronically, reducing ability to defend the process in disputes.

Practical Tips for Accurate and Efficient Completion

Apply these best practices to reduce cycle time and improve enforceability when issuing an engagement letter.

Standardize Templates
Use firm-approved templates with optional clauses for common variations to speed drafting and ensure consistency.
Confirm Authority
Obtain corporate resolution or delegate authority documentation for corporate signers when necessary.
Preserve Audit Trail
Capture IP, timestamps, and authentication evidence for all electronic signatures to support enforcement.
Document Changes
Use amendment language for scope or fee changes and re-execute the letter if terms materially change.

Timing Considerations and Key Dates Related to Engagement Letters

Timing affects when services begin, tax filing windows, and evidence preservation; align the engagement letter with required filing and delivery dates.

Execution Before Work:

Obtain signed engagement letter before commencing substantive services to avoid fee disputes.

Billing Effective Date:

State when billing begins; often the effective date in MM/DD/YYYY format.

Tax Filing Deadlines:

Coordinate deliverables with IRS deadlines such as Form 1040 (April 15) or 1099-NEC (Jan 31)

Delivery Milestones:

Include milestone dates for draft and final deliverables to manage expectations.

Record Retention Start:

Retention period typically measured from creation or finalization date of documents

Real-World Examples of Electronic Engagement Letter Usage

These short case notes illustrate how organizations use digital execution to streamline professional agreements.

Optica Ventures — Brian Fitzgibbons

The interface is simple and easy-to-use for our team; more importantly, it is just as easy for our customers.

  • Operational efficiency with remote signings reduced turnaround time.
  • By shifting routine engagement letters online, Optica cut administrative delays and ensured a consistent audit trail for every client relationship, improving clarity and recordkeeping.

Fertility Centers of Illinois — John Butler

The airSlate SignNow team has been exceptional, responsive, the API has been great, and we're extremely happy that we chose airSlate SignNow as a company.

  • Integration allowed automated routing and storage.
  • The center standardized engagement letters and patient-related authorizations electronically, preserving HIPAA controls and reducing paper handling while keeping complete audit records for compliance reviews.

Typical Signatory Roles for an Engagement Letter

Engagement Partner

A senior CPA or partner responsible for accepting the engagement on behalf of the firm; signs to confirm capacity, professional standards to be observed, and fee arrangements.

Client Authorized Officer

A client-side executive such as a CFO or business owner who has authority to accept terms, bind the organization, and provide required consents or data access.

Frequently Asked Questions About CPA Engagement Letters

Common questions and practical answers about signing, altering, and storing engagement letters for CPA services.


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