Buying or selling an accounting practice in Illinois

What should an Illinois owner settle before discussing price?

An Illinois transaction starts with the work the buyer will actually acquire. A practice providing tax preparation under the owner’s name presents a different operating question from a CPA firm issuing audit reports, employing reviewers, and serving clients across state borders. Identify each service, the contracting entity, the people authorized to deliver it, and the office location before treating an offer as executable.

That exercise belongs beside the financial review. A buyer may afford the proposed price yet lack the qualified ownership or personnel to continue the promised services. A seller may intend to retain a minority interest without deciding whether continued participation is practical. The Midwest market hub connects these local questions with broader acquisition conditions, while non-CPA ownership explains why capital and professional control require separate scrutiny.

Use an entity sketch with names, ownership interests, voting rights, services, and responsible CPAs. Mark the current arrangement and proposed closing arrangement on separate pages. A change hidden in the difference between those pages is a diligence task, even if the purchase agreement calls the transaction a simple asset sale.

Which Illinois rules affect the proposed structure?

The Illinois Public Accounting Act provides the governing starting point. Section 14.4 measures majority ownership through financial interests and voting rights and requires owners to participate actively in the firm or affiliated entities. Section 5.2 now addresses enhanced mobility for qualifying out-of-state individuals and firms. Section 16 connects peer review to licensed services and applicable exemptions.

Those are separate tests. Passing an individual mobility test does not answer whether an entity satisfies ownership, firm privileges, or peer review conditions. An acquisition of an Illinois office also deserves a different analysis from remotely serving Illinois clients through an existing out-of-state firm. Resolve the actual operating facts rather than using the buyer’s headquarters as the only jurisdictional fact.

The statute and the business plan should meet in a named responsibility list. If the transaction requires a new application, changed managing CPA, or revised service provider, put that dependency before the affected operating milestone. An estimated closing date should remain conditional until the required evidence supports it.

How do firm names and managing CPAs change the handoff?

IDFPR’s January 2026 CPA firm application instructions distinguish entity filings and assumed names. They require applicable legal-name alignment and supporting documents, and describe appointment of a managing CPA through a board resolution. The instructions recommend two managing CPAs when possible and note that one person can be managing CPA for only one firm at a time.

For a buyer already managing another entity, this creates a practical scheduling question. Decide who will take the acquired firm’s responsibility, whether the entities will combine, and how the appointment will be documented. An informal promise that the departing seller will remain available is weaker than an agreed role that the seller can perform throughout the required period.

A familiar name can also carry a service promise. Review the letterhead, engagement letters, website, invoice descriptor, and client announcement together. A correct filing with inconsistent public materials can still confuse clients about who provides the work. The purchase agreement should assign custody of old correspondence and specify who responds to questions involving preclosing engagements.

What does the available Illinois market evidence actually show?

The Census Bureau’s 2023 state County Business Patterns file reports 2,229 Illinois employer establishments classified as CPA offices, 990 tax-preparation establishments, 168 payroll-service establishments, and 1,759 other accounting-service establishments. These are four industry categories, not four mutually exclusive lists of services offered by local buyers.

An employer establishment is a business location with paid employees in this dataset. One firm can operate several locations, and businesses without employees fall outside this count. The reference year is 2023; the file is not a live 2026 directory. The categories describe the accounting business footprint, not the number of independent owners, available acquisition targets, or qualified bidders.

Illinois-wide totals also do not tell a Rockford seller how many buyers will keep an office there. Build the local search around the practice’s relationship geography, delivery needs, and niche experience. The establishment-data guide addresses denominator errors; the small versus large metro comparison helps examine operating reach without assuming metropolitan size predicts an offer.

This review did not establish a representative statewide CPA age distribution or independent-firm ownership count. New-license figures and voluntary profession surveys should not be substituted for those missing measures. Retirement pressure should be evidenced through the particular firm’s succession needs, rather than inferred from an unsupported statewide age statistic.

Which documented buyer activity is relevant to an Illinois seller?

Chicago-based Sikich announced that it closed its acquisition of Milwaukee-based Jefferson Wells U.S. on April 30, 2026. Its company transaction release describes finance, accounting, tax, and risk capabilities and explains the group’s alternative practice structure, including a separately licensed CPA entity for audit and attest services.

That is evidence of a recent acquisition by an Illinois-based professional-services organization. It is not evidence that Sikich seeks every small Illinois tax practice, will preserve a particular office, or has submitted an offer to a seller. The target’s consulting and resourcing profile matters when deciding whether the example resembles the practice under discussion.

A useful buyer profile therefore includes both documented history and transaction-specific questions. What services does the buyer seek? Who has decision authority? Which entity acquires the assets? Who employs the staff? What office and relationship coverage can be demonstrated? The buyer-release verification guide provides a process for keeping completed activity separate from assumed current interest.

What should Illinois tax and succession preparation include?

The Illinois Department of Revenue’s paid-preparer requirements require paid preparers of Illinois individual or business income tax returns to enter their IRS-issued PTIN. Employed preparers must also provide specified firm information. A buyer should reconcile the postclosing preparer and firm details with the actual return-production workflow, rather than treating a brand change as the whole transition.

For relationship preparation, the Illinois CPA Society’s Fall 2026 succession feature offers practitioner accounts focused on developing successor relationships before retirement. Those experiences are useful planning prompts, not a universal transition deadline or proof of a particular firm’s retention prospects.

Give the incoming advisor a specific responsibility: answer the next planning question, lead a review meeting, or resolve a recurring document problem with the seller supporting the handoff. Record the client’s response and any unresolved expectation. This produces evidence of relationship continuity that a general promise to make introductions does not provide.

How can the parties turn this research into a usable Illinois workplan?

1. Draw the present and proposed service-provider entities and identify every owner, responsible CPA, office, and report signer.
2. Confirm ownership, naming, license or privilege, and peer review conditions against the applicable facts before finalizing the entity structure.
3. Reconcile service-line collections, delivery hours, staff availability, and open engagements so the buyer prices a workload it can continue.
4. Qualify buyer fit privately and set a controlled information process before disclosing identifiable client material.
5. Assign preparer-system changes, client communications, custody, and unresolved quality work to named people with evidence-based completion dates.

Keep pricing and readiness in the same discussion. An offer that requires substantial rebuilding of delivery capacity may need a different transition budget from one supported by an existing team. Illinois market evidence can help frame that discussion, but the practice’s records and the buyer’s demonstrated operating plan determine whether the proposed transaction is credible.