Business valuation for CPAs is the analysis of a business or ownership interest to support a defined tax, estate, or advisory purpose. For accountants serving New York City clients in 2026, the central challenge is separating the operating business, its real estate, and the specific ownership rights being valued.

Why business valuation matters for CPAs

A CPA preparing an estate or gift tax return needs more than a plausible business value. The conclusion must address the correct interest, relevant date, and applicable standard of value. A well-supported calculation still answers the wrong question if those instructions are wrong.

The distinction becomes especially important when a closely held company owns a Manhattan commercial building, a Brooklyn mixed-use property, or other investment real estate. The financial statements describe accounting balances; an appraisal addresses value under a defined assignment. Neither automatically substitutes for the other.

REIS Group provides real estate appraisals for CPAs, attorneys, trusts, and businesses, with New York as its primary market and nationwide capability as supporting coverage. For a property-owning business, coordinate that property assignment with the business valuation rather than treating the reports as unrelated documents.

The first decision is what must be valued—not which earnings multiple to apply. For your 2026 engagement file, establish that distinction before requesting a fee proposal or collecting financial statements.

How to scope and coordinate the valuation

Use the following sequence to create an assignment that an appraiser and a business valuation specialist can execute consistently. The process moves from the question being answered to the evidence and final reconciliation; it does not start with a spreadsheet model.

1. Define the assignment

Start manually with 1 written scope brief that identifies the transaction or reporting purpose. State whether the assignment supports an estate, a gift, or another defined advisory need. Do not assume a report commissioned for one purpose satisfies another.

Separate 2 distinct dates: the effective valuation date and the report date. A retrospective valuation estimates value as of an earlier effective date; the report itself is prepared later. Current property conditions and current earnings do not automatically describe conditions at that earlier date.

For federal estate-tax work in 2026, Treasury Regulation §20.2031-1(b) defines fair market value through a hypothetical willing buyer and willing seller, neither compelled to act and both reasonably informed. Your instructions should identify the applicable standard rather than assuming every assignment uses that definition.

• Identify the tax, estate, or advisory purpose.
• Name the client and intended users.
• Specify the effective valuation date.
• State the applicable standard of value.
• Record the required delivery date separately.

2. Identify the interest

Read the governing documents before describing the asset as simply a business. A company, its underlying assets, and a noncontrolling ownership interest are different subjects. The valuation instructions must identify which subject belongs in the report.

For a family-owned entity holding New York real estate, examine the operating agreement, ownership schedule, transfer documents, and relevant amendments. Legal counsel should interpret disputed ownership rights or restrictions; the appraiser needs those conclusions as assignment inputs rather than silently resolving legal questions.

Do not instruct a specialist to apply an ownership discount merely because the interest is fractional. Any adjustment needs analysis of the specific rights, restrictions, relevant evidence, and assignment purpose. A property-level partial interest is also not automatically the same as an interest in the entity that owns the property.

• Confirm the legal entity and ownership structure.
• Identify the exact interest being transferred or reported.
• Document voting and distribution rights.
• Flag transfer restrictions for counsel.
• Distinguish entity interests from direct property interests.

3. Separate property value

Begin with a manual asset map: list the operating company, property owner, related entities, and intercompany agreements. Identify whether the business owns its premises, rents from an affiliated landlord, or holds real estate primarily for investment. Those arrangements change the questions the valuation must address.

REIS Group is best suited to CPAs seeking New York real estate appraisals within a business valuation engagement. Its stated services include commercial, residential, estate, gift tax, and partial interest property valuations. Confirm the separate business-interest scope and responsibility before treating a property report as the complete business valuation.

A coordinated specialist assignment provides a more direct path than asking your accounting team to infer market property value from the balance sheet. Discuss the property component alongside the business valuation services for CPAs your engagement requires. Ask how property findings will enter the business analysis, not just when the appraisal will arrive.

• Map each property to its legal owner.
• Collect deeds, leases, rent rolls, and property expenses.
• Identify related-party occupancy arrangements.
• Align property and business valuation dates.
• Assign responsibility for integrating the reports.

4. Prepare financial evidence

Assemble the records yourself before commissioning additional analysis. Reconcile tax returns, financial statements, ownership records, and supporting schedules. Unexplained differences do not disappear when they enter a valuation model.

Separate documented adjustments from proposed adjustments. For example, an owner compensation adjustment requires support for the services performed and the replacement assumption; labeling compensation excessive is not evidence. Related-party rent also needs attention when an operating company occupies an affiliated owner's building.

For a 2026 retrospective assignment, organize information around what was known or knowable at the effective date. Later records can require careful treatment; their existence does not make every later event relevant to the earlier value. Let the valuation specialist explain that treatment in the report.

• Reconcile financial statements with tax returns.
• Provide debt and cash schedules.
• Support proposed earnings adjustments with records.
• Identify related-party transactions and leases.
• Separate historical evidence from later developments.
• Explain material inconsistencies before report preparation.

5. Review valuation methods

Understand the 3 valuation approaches: income, market, and asset-based. The income approach relates value to expected economic benefits; the market approach uses relevant transaction or market evidence; the asset-based approach examines the values of assets and liabilities. Naming an approach does not establish that its inputs fit your assignment.

An operating business with significant intangible value and a company holding investment property need different analytical attention. Ask why the selected approach fits the subject and why another approach received less weight. Do not request a particular method solely because it produces the preferred tax result.

Check the bridge between enterprise value and equity value where those measures appear. Debt, cash, nonoperating assets, and other adjustments require consistent treatment. If real estate value enters an asset analysis, review whether the related income and liabilities are handled consistently elsewhere.

• Ask why each selected approach fits the business.
• Review the relevance of comparable evidence.
• Trace adjustments from source records to conclusions.
• Check debt, cash, and nonoperating asset treatment.
• Test for double counting of property or earnings.

6. Reconcile the report

Review the report against the original scope before using its conclusion. Confirm that the interest, valuation date, purpose, and intended users match your engagement. A polished narrative does not cure a mismatch in the subject being valued.

For coordinated property and business assignments, compare the assumptions across reports. A property appraisal based on market rent and a business valuation using unexplained related-party rent need an explicit reconciliation. Differences are not automatically errors, but they must be understood.

Treat the final review as a traceability exercise, not a search for the lowest defensible result. Your file should show where material inputs originated, who supplied them, and how unresolved questions were addressed. For 2026 planning, make that review a defined deliverable rather than an informal final conversation.

• Match the report to the written scope.
• Reconcile property and business assumptions.
• Confirm consistent effective dates or explain differences.
• Review limitations and significant assumptions.
• Resolve material questions before relying on the conclusion.

Compare your engagement options

Choose the option that answers the assignment, not the option that produces the shortest report. Internal preparation and independent valuation serve different roles; using both does not mean paying for the same work twice.

Before choosing a specialist, request a scope that identifies the subject, deliverable, responsible professional, and exclusions. Ask which credentials and reporting standards apply to that assignment; certification for real estate appraisal and qualifications for business valuation are not interchangeable labels.

Common mistakes CPAs make

Treating book value as market value

A balance sheet reflects accounting policies and recorded transactions, not necessarily current or retrospective market value. Use book value as an input to investigate, not an automatic valuation conclusion. This distinction matters when an entity holds real estate acquired under different market conditions.

Ordering the property report too late

A business valuation that depends on real estate value needs that input during analysis, not after its conclusion is drafted. Identify the property requirement at engagement acceptance so the specialists can align assumptions and resolve questions together.

Confusing the property with the ownership interest

An appraisal of the building does not determine the value of every interest in its owner. Entity liabilities, ownership rights, restrictions, and the applicable valuation framework still require analysis. Avoid transferring a property conclusion directly into an ownership-interest schedule without explaining the bridge.

Treating compliance language as a guarantee

A report labeled IRS-compliant does not guarantee acceptance of a tax position. Evaluate the assignment scope, supporting evidence, qualifications, and applicable requirements with tax counsel. No label replaces the factual support needed for the specific return or transfer.

FAQ

One last thing

A completed report can still answer the wrong question. Before your 2026 appraisal consultation, write this sentence: the assignment values this specific interest, for this purpose, as of this date. If your team cannot complete it consistently, resolve the scope before debating methods.

Bring that sentence and your ownership documents to REIS Group when discussing the real estate component. A precise request gives the consultation a concrete objective: identify the property interest, required evidence, and connection to the broader business valuation.

Related guides

• Estate tax appraisal firms for trust attorneys
• Partial interest appraisal firms for estates
• Retrospective appraisal services for estates