Sell-Side Tax Due Diligence & Structuring

Tax Factbook or Vendor Tax DD for a Successful Company Sale

A Tax Factbook presents the tax related facts of your company in a structured and efficient way and provides buyers with a reliable basis for their analysis
A Vendor Tax DD includes an additional review to assess and quantify material tax risks of the target
A clearly defined sell side tax advice process reduces buyer follow up questions, increasing transparency, and ensuring a well managed sale process
We deliver a report that serves as the key sell side document to make the buyer’s tax DD process more efficient
The result is greater process certainty, a stronger negotiating position, and fewer tax related surprises at the finish line

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Why Sell-Side Tax Due Diligence & Structuring Is Essential

An unprepared sales process may create uncertainty among buyers and lead to increased scrutiny and additional follow-up questions during the due diligence process. A structured Tax Factbook or Vendor Tax DD provides buyers with the information required to make informed investment decisions while supporting a more efficient sale process.

Buyer Ready Tax Story

A Tax Factbook or Vendor Tax DD that presents tax facts clearly and consistently, so buyer DD becomes faster and more predictable.

Less Follow Up, More Confidence

Proactive identification of likely buyer questions and evidence preparation to reduce iteration at the finish line.

Compliance and Documentation Quality

Presentation of tax compliance status, relevant tax documentation and key tax matters provides buyers with a reliable basis for their analysis.

Early Identification of Tax Risks

In special cases, a Vendor Tax DD is more suitable, assessing material tax risks so you can adapt your sales narrative and strategy early.

Process Control

Structured workstreams and disciplined data room management to keep timelines and reduce disruption to day to day operations.

Negotiation Leverage

A stronger negotiating position through transparent, evidence backed deliverables and fewer last minute surprises.

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Structuring a Successful Sell-Side Due Diligence Process

The duration of each project depends on its individual scope and requirements and therefore cannot be generalized. The timeline below serves as an example to illustrate our approach and provide a better understanding of the typical phases. Your specific project schedule will be predefined together during the initial planning stage.

A well-executed sell-side tax due diligence & advisory follows a clear, disciplined process that surfaces risks early and supports sound decision-making. Each step ensures that assumptions are challenged, opportunities are assessed, and critical aspects of the target company are thoroughly analyzed. The exact timeline varies depending on the size, industry, and complexity of the transaction.

Week 0 to 1:

Kickoff and request list

Week 1 to 2:

Data collection, interviews and initial analyses

Week 2 to 3:

Deep-dive workstreams and drafting of report

Week 3 to 4:

Finalization and management review

Week 4 to 6:

Data room validation, buyer Q&A and contractual support

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How We Bring Clarity to Your Deal

A structured Tax Factbook or Vendor Tax DD providing buyers with a clear and transparent overview of the target’s tax position
Structured presentation of key tax matters, including tax compliance, historical reorganizations, transfer pricing, tax audits and tax attributes
Early identification of potential buyer focus areas and collecting relevant supporting documentation
Where a Vendor Tax DD is more suitable, assessment and, where possible, quantification of material tax riskss
Clear presentation of tax facts and findings to facilitate an efficient buyer due diligence process and reduce follow-up questions
Tax-technical support for buyer Q&A and, where relevant, SPA negotiations

Who Benefits Most from Our Sell-Side Tax Due Diligence & Structuring

Sellers who want a buyer ready tax narrative and fewer DD surprises
Management teams that need process control with limited disruption to day to day operations
Deal teams that want a stronger negotiating position through transparency and evidence

Tombstones

Here is a list of a few Due Diligence projects we successfully worked on over the past:

Our Digital Tools

A reliable tax assessment is only possible when data, positions, and assumptions are evaluated through structured, technology-driven methods. We use modern tools, robust analytical frameworks, and secure data architectures to ensure every phase of the tax due diligence is precise, compliant, and corporate-ready.

Microsoft 365 environment with role-based access and full auditability
Data room preparation and document management to streamline the sales process
Dashboards designed for both management teams and M&A professionals

Key Areas of the sell-side Tax Due Diligence Review

Historical Tax Positions: We compile filing and assessment history and relevant tax documentation across all relevant taxes into a clear, buyer-ready overview.
Transfer Pricing: We present intercompany arrangements and supporting documentation to provide transparency on relevant transfer pricing matters.
Tax Audits and Rulings: We summarize ongoing and historical tax audits, correspondence and rulings to provide a transparent overview of relevant tax matters.
Tax Attributes: We present loss carryforwards and other relevant tax attributes, including potential limitations on their usability.
Transfer Taxes: We identify historical transfer tax matters and potential transfer tax implications relevant to the transaction under discussion.
Risk Quantification (Vendor Tax DD): Where a Vendor Tax DD is performed, we assess and, where possible, quantify material tax risks to provide transparency on potential financial exposures and support the sale process.

Why Radial?

Big Four–level quality combined with the speed and flexibility of a boutique firm
Leadership by former Big Four professionals, a bilingual team, and a private-equity mindset
Data-driven delivery with dashboards, models, and governance structures that you fully control
Proactive communication and clearly defined responsibilities that ensure measurable progress every week, helping you avoid surprises

Gain Full Transparency Into Tax Risks and Opportunities

You are preparing to sell and want to ensure every tax position, every assumption, and every risk is presented with clarity? Then now is the time to structure your sell-side tax advice professionally and thoroughly.

We support sellers with structured analysis, clear reporting, and real transaction expertise, enabling you to lead the narrative instead of reacting to buyer questions. Let’s talk and determine how we can best support you in the next step of your sale process.

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Frequently Asked Questions

What sets you apart from traditional sell-side tax advisors?

We tailor our sell-side approach to what the transaction actually requires. Where a clear and structured presentation of the target’s tax position is sufficient, we provide a concise Tax Factbook. Where a deeper assessment is beneficial, we perform a Vendor Tax DD that identifies, assesses and, where possible, quantifies material tax risks. In both cases, our deliverables are concise, buyer-focused and designed to facilitate an efficient sale process.

When should we bring you in?

Ideally early, before you go to market, so we can define the data collection and analytical priorities correctly from the start and give you time to address any findings.

Is a Tax Factbook or a Vendor Tax DD the right fit for us?

It depends on your objectives. A Tax Factbook is the market standard for a cost-efficient, transparent overview of tax facts. A Vendor Tax DD additionally assesses and quantifies material tax risks, giving management earlier visibility and a stronger negotiating position. We help you decide based on your transaction timeline and risk profile.

What business models do you cover?

We generally cover all industry sectors, with the exception of banks and insurance companies.

How long does the project take?

Typically four to six weeks from kickoff to data room readiness, including buyer Q&A support. Complex or multi-jurisdiction sale processes may require additional time.

What data do you need to get started?

We generally require tax-relevant information for all open tax years, including financial statements, tax returns, tax assessment notices, transfer pricing documentation and documentation relating to historical reorganizations. We prepare a detailed request list for you.

Do you work with other advisors, such as legal counsel or M&A bankers?

Yes. We coordinate closely with your legal, financial, and strategy advisors.

What are the main objectives of sell-side tax advice?

The objective of sell-side tax advice is to provide potential buyers with a clear, structured and transparent view of the target’s tax position, thereby facilitating an efficient sale process. Depending on the transaction, this can be achieved through a Tax Factbook presenting the relevant tax facts or a Vendor Tax DD that additionally identifies, assesses and, where possible, quantifies material tax risks.

What our customers say

Radial has helped us make great strides in our efforts to digitize financial reporting and increase transparency. I look forward to the next steps, in which we will once again be relying on Radial for support.

Thorsten Preiss, DETAX GmbH

Make the Right Acquisition Decision With Experience and Perspective

A thorough assessment of the financials determines whether a deal truly aligns with your goals, whether risks remain manageable, and whether you can move confidently as the buyer. If you need transparency, speed, and real financial certainty throughout the process, we support you with experience, technology, and deep expertise. Reach out to us and secure a buy-side due diligence that gives you as a buyer or investor genuine clarity.

Schedule a free initial consultation