Transaction Services Training
Back to all posts
fdd-datapackfinancial-due-diligencedata-roomanalysis

How to Analyse an FDD Datapack

A practical guide to analysing an FDD datapack: how to navigate the information, prioritise analysis, and extract key insights efficiently.

Published April 17, 2026· 3 min read

One of the first real challenges a TS analyst faces in fieldwork is the datapack — the package of financial information provided by the target company. Knowing how to navigate it efficiently separates productive analysts from overwhelmed ones.

What Is an FDD Datapack?

A datapack is a structured set of financial schedules and supporting analyses provided by the seller or target management, typically prepared as part of a sell-side or vendor due diligence process. It usually includes:

  • A multi-year P&L by month or quarter
  • A gross margin bridge by product line or segment
  • A headcount and salary schedule
  • An analysis of non-recurring and one-off items (management's version)
  • Balance sheet and NWC schedules
  • Customer revenue analysis (sometimes)

In a buy-side process without a vendor pack, analysts must build all of this from raw management accounts and board packs.

Step 1: Understand the Structure Before Diving In

Before opening any spreadsheet, spend 15–20 minutes understanding what is in the pack:

  • What years and periods are covered?
  • What accounting standard applies (IFRS, UK GAAP, local GAAP)?
  • Is the data consolidated or entity-level?
  • Is the P&L pre-IFRS 16 or post-IFRS 16?

Answering these questions prevents hours of rework later.

Step 2: Sense-Check the Numbers

Before detailed analysis, run a quick sanity check:

  • Does the revenue trend make sense given what you know about the business?
  • Do EBITDA margins appear plausible for this sector?
  • Are there any obvious gaps, blanks or inconsistencies in the data?
  • Do the numbers reconcile to statutory accounts?

A reconciliation between the datapack P&L and the audited statutory accounts is a critical early step. Unexplained differences are always a flag.

Step 3: Build Your Own Model in Parallel

Never rely entirely on the seller's datapack model. Build your own:

  • Reconstruct the P&L in a clean Excel format
  • Apply your own adjustments and trace each item to source documentation
  • Build a parallel NWC and net debt schedule

This allows you to independently verify the seller's figures and identify any items they have omitted or presented differently.

Step 4: Identify Key Areas of Risk

As you work through the data, flag items for further investigation:

  • Revenue lines that grow unusually quickly in the final reported period
  • Cost lines that are suspiciously flat despite revenue growth
  • Items classified as non-recurring that appear in multiple periods
  • Debtors ageing schedules with high concentrations in older buckets

Step 5: Prepare Your Q&A List

Every unexplained item in the datapack becomes a question for management. A well-structured Q&A list demonstrates analytical rigour and drives a productive management session.

Conclusion

Datapack analysis is a core TS skill. Analysts who can move from a raw datapack to a clean model with a prioritised issues list in two to three days are invaluable to deal teams.


The Transaction Services Interview Programme (€119.99, one-time) includes a real FDD datapack exercise so you can practise the full analysis process before your interview. Enrol now.