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Sell-side tax strategy: Turning smart planning into deal value
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How the right mix of advisors helps sellers maximize value and reduce risk
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November 11, 2026
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Article

Key takeaways

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Tax planning and advisor alignment can help sellers preserve value throughout a transaction.
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Early tax diligence can uncover opportunities and address risks before they affect value.
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Collaboration across tax, legal and banking advisors can support stronger deal outcomes.
  • Private Equity
  • Business Tax
  • M&A Tax Services
  • M&A Transaction Management

In mergers and acquisitions transactions, taxes are often a significant value driver. A well-advised seller can get on the right side of the value ledger through proactive planning, thoughtful negotiation and disciplined execution. Achieving those outcomes often requires multiple advisors with distinct roles and perspectives, each contributing to how tax opportunities are identified, risks are managed and value is ultimately preserved.

Maximizing value around taxes in a transaction can include:

Addressing these complexities successfully can be a wide-ranging undertaking, one that often requires a team of professionals each providing key insights. In the following, we examine the roles of various advisors in a sell-side, tax-related context, and how sellers can utilize advisor expertise to produce winning outcomes.

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Investment banker: Bringing tax value into the deal narrative

An investment banker is tasked with making a market for the target company, helping to negotiate terms and structure, and quarterbacking the sales process from inception to closing. They need to see the big picture and drive the best overall outcome for the sellers and target company.

Investment bankers will often bring concepts to the table for maximizing value around taxes. They will work with the sell-side tax advisors to understand the commercial significance of tax matters, flesh out technical positions and uncover seller-friendly outcomes.

Early and frequent communication is key. For example, by working with a target’s tax advisors, the investment banker may be able to understand and communicate the value of the target’s tax attributes prior to the target receiving final bids and entering into a letter of intent.

Law firm: Structuring and documenting tax outcomes

The target company will typically engage a law firm to serve as primary deal counsel. The target or sellers may also hire additional counsel to address specific matters or represent certain interests.

Counsel will typically play multiple roles in the transaction process, including drafting the purchase agreement and other legal documents, negotiating deal terms, maintaining and resolving issues lists, and supporting legal diligence.

Frequently, a tax attorney will be part of a seller’s legal team. An effective tax counsel will work closely with their legal colleagues and other advisors to make sure tax issues are considered and resolved commercially within the context of the transaction. They are also essential in making sure negotiated outcomes and intents are properly captured in the transaction documents. They may also be involved in the legal and tax structure of the transaction.

Accounting firm: Delivering tax insight throughout the deal lifecycle

Company tax advisor (tax return preparer)

Typically, when it comes to taxes, the target company’s accounting firm is at the heart of the matter. Team members will likely have the most historical knowledge and perspective on the company’s tax function. This will likely include income tax return and tax provision preparation, but may also include sales tax, payroll taxes and other various tax planning steps.

Leveraging this experience early and often in the deal process is key. Working with M&A tax and other specialists, accountants can help identify risks, opportunities and planning strategies for the transaction. Closer to process launch, they should help the seller and the investment banker prepare the data room. Once buy-side diligence begins, they will need to represent the company on calls with buy-side diligence providers, respond to requests, and help to advise the seller and their counsel on deal terms related to tax matters.

Post-closing, having advisors like those in this team who understand transactions is essential for proper reporting and making sure the results negotiated for are realized on tax returns.

M&A tax team

The role of an accounting firm’s M&A tax team on a sell-side transaction is critical. For target companies with smaller or less experienced primary tax advisors, engaging a dedicated M&A tax professional can fill an important gap in expertise. However, even companies with experienced primary tax advisors can benefit greatly from using a dedicated M&A tax professional.

Note that the M&A tax team and the company’s tax return preparer can, but may not necessarily, be from the same firm.

M&A tax professionals at accounting firms spend all their time on deals. They have an understanding of planning ideas, technical tax rules, market practices on tax matters and deal cadence that make them an integral part of the team. They have connections to firm specialists in relevant areas and understand how to deploy them to support the deal.

Some areas where accounting firm M&A tax professionals create unique value are as follows:

The takeaway

A collaborative approach between sellers and their advisors is vital to maximize success in a transaction, especially when it concerns taxation. Securing the best outcome means planning, negotiation, execution and follow-through. Collaboration brings context to the technical and crystalizes expertise into value.

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