Closing an accounting firm: what must you keep, and what is left to license?
An accounting firm holds two things that look alike and are not. Client returns, workpapers and audit files carry retention duties that outlast the firm. The firm’s own working system, meaning its checklists, close calendars, review notes and email threads about how a problem was handled, is a different record, and it is the part an AI lab would care about.
Rules to read first
The seven-year rule applies to audits of public companies and registered investment companies, not to every engagement. The SEC rule text and the Internal Revenue Code section are short and worth reading in full.
| Rule | What it requires |
|---|---|
| 17 CFR 210.2-06 | An accountant who audits or reviews an issuer’s financial statements keeps the audit records, including workpapers, for seven years after concluding the audit or review. |
| 26 U.S.C. 6107(b) | A tax return preparer keeps a copy of each return, or a list of the clients and their identifying details, for three years after the close of the return period. |
| State boards of accountancy | Most boards set their own client record retention and require notice to clients when a firm closes. The period often differs from the federal one. |
What the firm owns that clients do not
Tax return data is its own category. Section 7216 of the Internal Revenue Code limits what a preparer may disclose or use without the client’s consent, so return data stays out of any deal unless every client has agreed in writing.
- Month-end close checklists and the calendars that sequence them.
- Review notes where a senior reviewer explains a change to a junior’s work.
- Email threads about how an unusual transaction was treated, with client names removed.
- Engagement letter templates and scoping notes.
- Practice manuals: how the firm tests a balance, sizes a sample and documents the result.
Where the records are and the usual loss
The firm’s system is usually a practice management suite, a document portal, tax software, an audit file tool and email. The common loss on closing is the portal: clients upload through it, the firm cancels the subscription, and the upload history disappears along with the client’s access to its own documents.
Ask each vendor how long a closed account’s data remains and whether clients can still download. Then export the review notes and the close calendars first. Those are small files and they carry the way the firm works.
What stays out
| Record | Why it stays out |
|---|---|
| Audit workpapers for public company clients | Seven years of required retention, and they hold the client’s confidential information. |
| Tax returns and return data | Protected by section 7216 unless the client consents. |
| Payroll files for client companies | They are the client’s records, with employee names and pay. |
| Anything that identifies a client’s owners | Ownership detail is confidential engagement information. |
Who decides
The partners decide for the firm’s own work, and the state board decides what the firm must do with client records. If a partner retires and the practice sells, the buyer takes the client files with notice to clients, and the working system can be dealt with separately. See what the closing-company page says about signing authority.
Read next
- Closing or bankrupt companies. Who signs and what to keep.
- Records to keep before you close. A checker by industry.
- Liability. Who answers for what in a deal.
- Accounting firms: licensing while open. What a running firm can license.
Questions about closing an accounting firm: what must you keep, and what is left to license?
Can we license our review notes?
The firm’s own notes can be licensed once client names, amounts that identify a client and anything under section 7216 are removed and a partner has checked the result.
How long must a closed firm keep a copy of each return?
The federal section says three years after the close of the return period for the copy or the client list. State rules and your own engagement letters may ask for more.
Do audit workpapers ever go into a deal?
Not for public company audits during the seven-year period, and not for any client without that client’s consent.
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