What is a bookkeeping engagement letter?
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A bookkeeping engagement letter is the written agreement between a bookkeeping firm and a client that defines scope, fees, responsibilities, and termination terms for the bookkeeping engagement. The AICPA Code of Professional Conduct treats engagement letters as a core risk-management practice. Common scope items include bank reconciliation, accounts payable, accounts receivable, payroll posting, monthly financial statements, and year-end close. The letter sets the monthly retainer or hourly billing terms and clarifies what the client must provide (bank access, source documents, response time).
How does SSARS apply to bookkeeping work?
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AICPA Statements on Standards for Accounting and Review Services (SSARS) apply when a bookkeeping firm produces financial statements. SSARS No. 21 (codified as AR-C Section 70) governs preparation engagements where the firm prepares financial statements but issues no report. SSARS No. 25 took effect for periods ending on or after December 15, 2021, and updated preparation, compilation, and review engagement language. If your bookkeeping engagement produces client-ready financials, the engagement letter should reference the applicable AR-C section.
Is the AICPA Bookkeeping Certificate required to send engagement letters?
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No. The AICPA Fundamentals of Bookkeeping Certificate is a credential program for non-CPAs and entry-level practitioners covering recording transactions, payroll, and adjusting entries. It is not a license. Bookkeeping engagement letters can be issued by any practitioner who is not holding out as a CPA. State licensing rules apply to anyone using the CPA designation, so non-CPA bookkeepers should disclaim CPA-equivalent claims in their engagement letters.
How should the engagement letter handle the monthly retainer versus hourly billing?
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Most modern bookkeeping firms have moved to flat monthly retainers because the model is predictable for both sides. The engagement letter states the monthly amount, the scope of services included at that price, and what falls outside scope (special projects, audits, year-end review work). Hourly billing remains common for clean-up engagements (a backlog of unreconciled accounts) and for forensic-style scopes. The letter should state which model applies and how scope changes are handled.
How does the year-end close fit into the engagement letter?
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Year-end close work (final reconciliations, journal entries, tax-package preparation for the client tax preparer) is typically either bundled into the monthly retainer or priced as a separate deliverable. The engagement letter should clarify which approach applies and the deadline by which the client must provide year-end source documents. Firms that do not specify the year-end-close fee in advance commonly find scope-creep eats their margin in January and February.
Are e-signed bookkeeping engagement letters legally binding?
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Yes. The federal Electronic Signatures in Global and National Commerce Act (ESIGN Act) and the Uniform Electronic Transactions Act (UETA) adopted by 49 states give electronic signatures the same legal effect as wet-ink signatures for nearly all professional services contracts. Bookkeeping engagement letters between firms and clients are squarely covered. Tools that capture a tamper-evident audit trail with timestamps, IP addresses, and consent to electronic records produce the strongest record. Formfy, DocuSign, Adobe Acrobat Sign, and Dropbox Sign all meet this bar.
How does scope of work get defined for a bookkeeping engagement?
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Scope of work for monthly bookkeeping typically lists: chart of accounts setup and maintenance, accounting basis (accrual basis or cash basis under Generally Accepted Accounting Principles), double-entry bookkeeping using the firm general ledger, bank reconciliation (which accounts), credit card reconciliation, accounts payable processing (vendor entry, bill payment), accounts receivable processing (invoicing, deposits), payroll posting (if not handled by a payroll service), monthly journal entries, monthly financial statement issuance, and the year-end-close handoff to the client tax preparer. The engagement letter should also specify what is out of scope (audit, tax return preparation, forensic accounting, financial planning, valuations). Reference: IRS Publication 583 (Starting a Business and Keeping Records) provides a baseline framework for what records the client must keep on their side.
What document retention period should the bookkeeping engagement letter specify?
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Most bookkeeping firms adopt seven-year retention to align with extended IRS assessment periods under Internal Revenue Code §6501(e), even though IRC §6107 (which governs return preparers specifically) only requires three years. Bookkeeping firms that do not also prepare returns are not directly bound by §6107 but should set a clear retention policy in the engagement letter so the client knows when the firm will purge files.
Is the bookkeeping firm a financial institution under GLBA?
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Bookkeeping firms that prepare or file tax returns and that provide ancillary financial services are treated as financial institutions under the FTC Safeguards Rule (16 CFR Part 314) implementing the Gramm-Leach-Bliley Act. The amended Safeguards Rule effective June 9, 2023 requires firms to maintain a written information security program. The engagement letter typically references the firm policy without reproducing the entire program.
How does IRC § 7216 consent apply to bookkeeping firms that share data?
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26 U.S.C. § 7216 prohibits tax-return preparers from disclosing or using taxpayer information for purposes other than return preparation without written consent. Bookkeeping firms that do not prepare returns are not directly bound, but firms that share bookkeeping data with the client tax preparer (a common pattern) should obtain §7216-compliant written consent from the client to avoid implicating the receiving preparer. The engagement letter is the natural place to capture that consent inline or as an addendum.
Should the bookkeeping engagement letter include indemnification?
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Most bookkeeping engagement letters include mutual indemnification: the client indemnifies the firm against claims arising from inaccurate client-provided information, and the firm indemnifies the client for claims arising from firm gross negligence or willful misconduct. Caps on damages tied to fees paid for the engagement are common and generally enforceable when fairly negotiated. State variations exist on enforceability of liability caps in professional services agreements, so review with counsel for high-fee engagements.
Can the bookkeeping firm collect the monthly retainer at the same time the client signs?
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Yes, with the right tool. Formfy supports payment collection (Stripe and PayPal) on booking forms in the same flow as the engagement letter signature, which is well-suited to capturing the first-month retainer. Ignition is built around recurring monthly billing tied to the engagement letter. PandaDoc supports in-document payments through Stripe and other gateways. DocuSign Payments is available on Business Pro and Enterprise Pro plans through gateway integrations. Bookkeeping firms increasingly bundle the first retainer collection into the engagement-letter step.
How fast can a bookkeeping firm send a client engagement letter using AI tools?
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With an AI form builder like Formfy, a bookkeeper can describe the engagement in plain English (scope of monthly services, retainer amount, what falls outside scope, year-end-close handling, termination clause) and have a delivery-ready engagement letter with e-signature and optional payment in under 30 seconds. The bottleneck used to be the Word document, the PDF conversion, and the manual signature-field placement in DocuSign. AI generation collapses the form-build step.
How does Circular 230 apply to non-CPA bookkeepers?
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IRS Circular 230 (31 CFR Part 10) primarily governs practice before the IRS by attorneys, CPAs, enrolled agents, and other defined practitioners. Non-CPA bookkeepers who do not prepare tax returns and who do not represent clients before the IRS are generally outside Circular 230 scope. Bookkeepers who do prepare returns are subject to PTIN requirements and IRS oversight even without CPA or EA credentials.
How often should the bookkeeping engagement letter be updated?
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Annually at minimum. Standards changes (SSARS No. 25 effective for periods ending on or after December 15, 2021), regulatory changes (the FTC Safeguards Rule amendments effective June 9, 2023), and fee adjustments are all reasons to refresh the template. Most bookkeeping firms refresh templates each November before the year-end-close wave begins.
Why does the listicle put Formfy first?
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Two reasons. First, Formfy is the only tool on the list that bundles AI form generation, e-signature with audit trail, and optional payment collection in a submission-priced subscription that does not penalize you for accepting more clients during year-end-close season. Second, the founder-to-founder honesty point: every tool on the list does part of what Formfy does, and several do their part better in a single domain (Ignition for recurring billing, Karbon for team workflow, Canopy for tax resolution). The reason to start with Formfy is workflow consolidation, not feature dominance.
