Fix compliance gaps before they cost you

Nov 30, 2025

Banner Image

 

State licensing and tax compliance can make or break your deal, so you must plan early to protect value, avoid liability, and ensure a smooth transition.

Architecture and engineering firms do not operate like most other businesses. They are heavily regulated, with state laws setting the rules around who can offer professional services, how firms are structured, and even what they can be called. That makes mergers and acquisitions especially tricky because a single misstep can ruin the deal.

Whether you are merging, acquiring, selling, or planning for internal succession, compliance must be front and center, not something you check off after closing. Without a proactive plan, you could run into issues such as invalid firm licenses, unexpected tax bills, or the need to completely restructure your legal entities.

Most firms focus on the financials and legal documents during a deal, and rightfully so. But they should also assess licensing, ownership structures, new registrations, and new state obligations.

Getting ahead of these matters helps avoid delays, protects the deal’s value, and sets the buyer and seller up for a smoother transition and future success.

State tax noncompliance: the inherited liability that kills deals

An area that often gets overlooked, until it becomes a problem, is state tax compliance. If a target firm has not registered in states where it has nexus or has failed to file or pay the appropriate taxes (income, franchise, sales, gross receipts, etc.), those liabilities may not disappear in a transaction. In fact, buyers often inherit these obligations, and they can quickly turn a profitable deal into a financial problem.

Due diligence should include a thorough review of multi-state tax filings, registrations, and potential audit exposure. And if issues are discovered, consider remedies such as voluntary disclosure agreements or settlement strategies before moving forward. Cleaning things up ahead of the deal can help avoid price adjustments, escrow holdbacks, or, worse, no deal.

A/E licensing and entity structure: what you must know before M&A

Licensing for architecture and engineering firms varies by state, with each state having its own requirements. Some states license both the firm and individual professionals, while others have rules on who can own or control the business. On top of that, certain entity structures, such as PCs, PLLCs, or LLPs, have naming rules and ownership restrictions.

Changing ownership and entity structures through the M&A process can unintentionally void a firm’s professional licenses if you are not careful.

How deal structure creates new state tax exposure

State and local tax planning often gets less attention than federal tax, but it is just as important. A poorly structured deal can lead to unexpected exposure to state income tax, franchise tax, sales tax, gross receipts tax, or even employment tax.

M&A activity can also expand your footprint into new jurisdictions, bringing new filing obligations and compliance you did not plan for.

Post-closing compliance: final steps to protect M&A value

The work does not stop once the deal closes. Finalizing an M&A transaction requires careful attention to post-closing compliance tasks that are just as critical as the upfront due diligence.

This includes filing final state and local tax returns for dissolved or merged entities, closing out old tax accounts, and confirming that all registrations align with the new business structure. You will also need to formally notify the Secretaries of State of any changes in stock classes or the number of shares issued/outstanding, entity name, or principal office address. Professional licensing boards must be informed of new leadership, changes in ownership, or other qualifying details that could affect firm licensure.

Overlooking these steps can result in penalties, lapses in good standing, or even license suspension, all of which can disrupt operations and decrease return on investment.

Position your deal for sustained value

M&A is a huge opportunity, but only if state compliance is part of the blueprint. Deals are becoming more complex, especially with new ownership models and multi-state operations. Firms that place state compliance at the center of their strategy will be in a much better position for long-term success.

If you are planning to explore a transaction, now is the time to bring in your advisors and map out your state compliance plan. It is one of the best moves you can make toward the success of your deal.

Accelerate your deal’s success

Join us for our upcoming webinar, "Strategic M&A Planning: State Compliance in A/E Transactions," where a panel of state advisory, M&A, and tax experts will break down the compliance considerations that can make or break a deal.

Whether you’re preparing for a leadership transition, a partner buyout, or a full merger or acquisition, understanding state-specific requirements is essential. SN’s panel will help attendees address and manage these complexities with confidence, positioning your transaction for long-term success. 

Karen Poist, CPA, is managing director of state advisory services at Stamaugh Ness. Connect with her on LinkedIn.

About Zweig Group

Zweig Group, a four-time Inc. 500/5000 honoree, is the premier authority in AEC management consulting, the go-to source for industry research, and the leading provider of customized learning and training. Zweig Group specializes in four core consulting areas: Talent, Performance, Growth, and Transition, including innovative solutions in mergers and acquisitions, strategic planning, financial management, ownership transition, executive search, business development, valuation, and more. With a mission to Elevate the Industry®, Zweig Group exists to help AEC firms succeed in a competitive marketplace. The firm has offices in Dallas and Fayetteville, Arkansas.