Accounting Engagement Letter Template for the United States
Generate a bespoke document
What is a Accounting Engagement Letter?
The Accounting Engagement Letter serves as the foundational document for professional accounting services in the United States. It is required by professional standards and best practices, providing clear documentation of the agreed-upon services, responsibilities, and terms. This document is essential for establishing the scope of work, managing expectations, and ensuring compliance with regulatory requirements. It protects both the accounting firm and the client by clearly defining the nature of services, limitations, and mutual obligations.
Trusted by high-performance teams
Frequently Asked Questions
Who signs the engagement letter?
The firm signs and an authorized representative of the client countersigns, which for a company means someone with authority to bind it and for an audit is usually the person charged with governance. Date the signatures before fieldwork begins so the terms cover the whole engagement. Where the client is a group, name the entities the engagement covers, because a subsidiary that was assumed to be included and is not creates a scope argument at the worst point in the timetable. Keep the executed copy accessible to the engagement team rather than only in the firm's central file.
Does a new letter have to be issued each year?
Recurring engagements are normally re-papered annually, and a fresh letter is needed whenever the scope, the fee basis, the entity, or the standards applied change. Where nothing has changed, a short annual confirmation referring to the existing terms is a common approach. Watch for changes a client mentions in passing rather than formally, such as a new subsidiary, a first year of external financing, or a request for tax work alongside the accounts, since each of those moves the scope. Reissue rather than amend where more than one term changes, so a single current document governs.
Who owns the working papers and the client's records?
Working papers prepared by the firm generally remain the firm's property, while records the client supplied stay the client's and should be returned on request. The letter should say what will be handed back at the end, in what format, and how long the firm retains its own file. The point bites on a change of accountant, when the incoming firm asks for material the outgoing firm is not obliged to hand over, and an unpaid fee complicates it further. Set out now what happens to records on termination, and what the client receives if fees are outstanding.
Can the letter limit the firm's liability?
Many letters include caps, shortened claim periods, and an agreement that the client will not seek indemnity for its own misstatements, and how far those hold up depends on state law and on the type of engagement. Note that limitation and indemnity wording is restricted for engagements involving public companies and certain regulated filings. A cap that was never brought to the client's attention, or that sits in terms attached by reference, is the version most likely to be tested. Say what the cap is, what it excludes, and record that the client has read that clause.
Does the same letter work across states?
Practice privilege, permitted services, and the rules on fees and record retention are set by each State Board of Accountancy, so the letter should name the governing state and the standards being followed. Check the board rules for the state where the client is served when the firm practices in more than one. Contingent and commission-based fee arrangements attract particular restrictions depending on the service, so the fee clause is worth checking against those rules rather than carrying it over from another engagement. Name the state whose law governs the letter as well as the state of practice.
About the Accounting Engagement Letter
An Accounting Engagement Letter is a legal document that formalizes the working relationship between you and your CPA firm. It sets out the services to be provided, the responsibilities each side carries, and the terms and conditions that apply, keeping the arrangement clear from the first day of the engagement.
What is an AICPA consulting services engagement letter?
A consulting services engagement letter is the version used when a CPA firm provides advisory work rather than an audit, review, or compilation. Examples include business planning, financial modeling, systems selection, transaction support, and general management advice. The AICPA Statement on Standards for Consulting Services (SSCS No. 1) treats consulting as a distinct type of engagement, so the letter should describe the specific advisory work, the deliverables, and the assumptions the advice rests on. The Statement on Standards for Consulting Services is issued by AICPA members and sets the professional duties that apply once a member takes on advisory work. This template covers both assurance and consulting engagements, so you can adapt one document to the type of service you are buying.
When do you need this document?
You need an engagement letter whenever you engage a CPA firm, whether for audits, reviews, compilations, tax preparation, bookkeeping, or consulting services. AICPA standards call for this record on most engagements to fix the scope and nature of the work. The letter matters when starting a new client relationship, expanding existing services, or when there is a significant change in your business structure or accounting needs. Public companies should confirm the letter meets Sarbanes-Oxley Act requirements, while private companies benefit from clear written limits on what is and is not included.
Key legal considerations
The letter should define the scope of services precisely so both parties understand what is covered and where the work stops. It should identify which professional standards apply, including AICPA standards, SSARS for review and compilation engagements, SSCS for consulting work, and relevant GAAP requirements. Spell out client responsibilities, including providing accurate records and maintaining proper internal controls. Fee arrangements, payment terms, and how questions or disputes get resolved belong in the letter too. Consider clauses on confidentiality, record retention, and the circumstances under which either side may end the engagement. For tax services, confirm the language meets IRS Circular 230 requirements for written advice.
Legal requirements in United States
Under United States rules, engagement letters must follow AICPA Professional Standards, which call for written agreements on most professional services. SSARS applies to compilation and review engagements, and SSCS applies to consulting engagements, each requiring clear identification of the level of service and the related responsibilities. If your business is publicly traded, Sarbanes-Oxley Act provisions add independence and documentation requirements. State Board of Accountancy rules vary by jurisdiction but generally require proper records of the professional relationship. The letter should also address IRS Circular 230 for tax services and comply with state law on professional services contracts and liability limitations.
What should a consulting services engagement letter include?
A clear consulting engagement letter usually covers the following, and using this as a checklist helps you plan the scope before the work starts:
- The parties: the client and the CPA firm, with contact details for the person responsible on each side.
- Scope of services: the specific advisory work, deliverables, and any work that is expressly excluded.
- Standards: a reference to the AICPA standards and the Statement on Standards for Consulting Services that govern the engagement.
- Fees: the fee basis, estimates, billing schedule, and payment terms.
- Responsibilities: what the client must supply and what the firm will produce.
- Term: the start date, expected duration, and how either side can end the engagement.
- Terms and conditions: confidentiality, record retention, and dispute resolution.
Worked example
Suppose a growing software company hires a CPA firm to advise on choosing new financial reporting software during 2026. The engagement letter would name both parties, describe the advisory scope (evaluate three systems, run a fit assessment, deliver a written recommendation), state the fee as a fixed amount, list what the company must provide (access to current reports and a named contact for questions), and set the terms and conditions covering confidentiality and how the parties resolve any disagreement. Because this is advisory work, the letter cites the Statement on Standards for Consulting Services rather than audit standards.
Where to find related documents and answers
If you're setting up a broader advisory relationship, you may also want a consulting agreement to sit alongside the engagement letter, or a professional services agreement for ongoing work. GenieAI drafts each of these to your own terms, checks the content against your playbook, and flags risk in red, amber, and green so your commercial team can agree with confidence.
GOVERNING LAW
Applicable law
This Accounting Engagement Letter is drafted to comply with United States law. Key legislation includes:
Further Engagement Letter documents
Explore 208,390+ legal templates
Explore 208,390+ legal templates
Genie's Security Promise
Genie is the safest place to draft. Here's how we prioritise your privacy and security.
Your data is private:
We do not train on your data; Genie's AI improves independently
All data stored on Genie is private to your organisation
Your documents are protected:
Your documents are protected by ultra-secure 256-bit encryption
We are ISO27001 certified, so your data is secure
Organizational security:
You retain IP ownership of your documents and their information
You have full control over your data and who gets to see it