Financial due diligence (FDD) is transaction work: a buyer, seller, lender or investor wants to know what a company's numbers really say before money changes hands. For a Chartered Accountant, it is one of the most natural moves out of audit or controllership, because the raw material is the same (ledgers, trial balances, financial statements) but the question asked of it is different. This guide explains what the work involves, how it differs from audit, the calculations you will be expected to handle on day one, and how to present your background to a deals team.
Why FDD sits squarely within a CA's professional scope
ICAI has long described this kind of work as part of what CAs do. On its Services by CA page, ICAI states that Chartered Accountants "are often called upon to carry out investigation to ascertain the financial position of business in connection with matters such as a new issue of share capital, the purchase or sale or financing of a business, reconstruction and amalgamations." The same page lists valuation of shares "when amalgamation or re-organisation takes place for the purpose of takeover bids and other acquisitions", and management consultancy that includes "advising management on amalgamations, reconstructions, takeovers and expansion schemes."
ICAI's Avenues for CA page on its career counselling portal also names corporate finance and mergers and acquisitions among the services a CA can offer. FDD is the modern, specialised form of the "investigation" work ICAI describes: structured, time-bound and written for a deal decision.
What a diligence team is actually asked to find
Large advisory firms describe the scope in similar terms. PwC India's buy-side due diligence page lists the areas it examines, and they map closely to what junior team members spend their time on:
- Quality of earnings: the "sustained level of EBITDA going forward on a standalone basis", after stripping out items that will not recur.
- Debt-like items: "significant off-balance sheet liabilities, commitments and contingencies or other significant items including any potential tax liabilities that may affect value and crystallise in near future."
- Working capital: the cash-flow impact of movements in working capital and "the normalised level of working capital required."
- Tax and litigation: the impact of pending tax assessments and litigations.
- Protection in the deal documents: areas where specific indemnities and warranties may be needed.
Every one of these ends in a number or a clause that someone will negotiate. That is the practical difference between a diligence finding and an audit observation: a finding is useful only if it changes price, structure or protection.
Audit and FDD compared
The two disciplines share tools but not purpose. A statutory audit is carried out within an assurance framework and ends in an opinion on the financial statements. FDD is commissioned for one transaction and ends in a report that helps a client decide and negotiate. The table sets out the differences you will notice in the first month.
| Aspect | Statutory audit | Financial due diligence |
|---|---|---|
| Core question | Are the financial statements fairly presented under the framework? | What are sustainable earnings, normal working capital and hidden liabilities? |
| Output | Audit opinion and reports required by law | Findings report for the client, often with a price bridge |
| Time frame | Annual cycle | Weeks, driven by the deal timetable |
| Main evidence | Sampling, confirmations, controls testing | Monthly management data, trend analysis, management discussions |
| Typical challenge | Is this balance correctly stated? | Is this profit repeatable, and what cash does the business really need? |
An auditor may test whether revenue is recognised in the right period. An FDD analyst uses the same ledger to ask why EBITDA moved, whether margins will hold, whether a good year came from a one-off event, and whether a commitment outside the balance sheet affects value. Accounting depth is the entry ticket; commercial curiosity is what the job adds.
The sequence of a typical engagement
- Understand the target: business model, revenue streams, cost structure, key customers and suppliers, locations and the KPIs management tracks.
- Build a reliable base: reconcile management accounts to trial balances and audited statements, and note any changes in accounting policy or classification between years.
- Analyse performance: study revenue, gross margin, operating costs, EBITDA and cash flow across several periods, usually month by month.
- Identify adjustments: investigate unusual, non-recurring or non-operating items and separate evidence-backed adjustments from management narrative.
- Test working capital and debt-like items: seasonality, collection and payment patterns, inventory behaviour, provisions, commitments and tax exposures.
- Question management: turn each analytical observation into a focused question and corroborate the answer with data.
- Report: communicate the few issues that matter most, their financial effect where it can be supported, and the evidence behind each conclusion.
Three calculations you should be able to do without help
1. An adjusted EBITDA bridge
A target reports EBITDA of Rs. 20 crore. The team finds Rs. 2 crore of income from a one-time settlement with a former supplier and Rs. 1 crore of legal cost on a dispute that has now closed. If contracts and ledgers support both classifications, the bridge removes the income and adds back the cost: Rs. 20 crore minus Rs. 2 crore plus Rs. 1 crore gives adjusted EBITDA of Rs. 19 crore.
The arithmetic is trivial; the evidence is the work. You must document why each item is unusual, whether similar items appeared in earlier years (a "one-off" that recurs every year is not one-off), and whether the buyer accepts the treatment. Rs. 19 crore is an evidence-backed indicator, not automatically the figure a valuer will use.
2. A normalised working capital check
Suppose the target's net working capital (trade receivables plus inventory minus trade payables) over the last 12 months was, in Rs. crore: 31.0, 33.5, 35.2, 34.8, 32.1, 30.4, 29.9, 31.7, 34.6, 36.3, 35.0 and 27.5. The 12-month average is Rs. 32.67 crore, while the closing figure is only Rs. 27.5 crore, about Rs. 5.17 crore below average.
A closing figure well below the normal level can mean the seller collected hard and delayed payments before the balance sheet date. If the price assumes a normal level of working capital, the buyer would inherit a business that must put roughly Rs. 5.17 crore of cash back into working capital soon after completion. Spotting that gap, and explaining it, is exactly the "normalised level of working capital" work PwC describes.
3. Receivable days and cash conversion
If trade receivables were Rs. 30 crore on revenue of Rs. 210 crore last year, receivable days were about 52.1 (30 / 210 x 365). This year receivables are Rs. 42 crore on revenue of Rs. 240 crore, or about 63.9 days. Revenue grew, but customers are paying roughly 12 days slower. If operating cash flow before tax is Rs. 13.3 crore against adjusted EBITDA of Rs. 19 crore, cash conversion is 70 percent. Together these facts raise the questions a deals team wants answered: are sales being pushed through extended credit, is a large customer in difficulty, or has billing shifted to the year end?
What you bring, and what you need to add
CAs usually arrive with a strong base: linking the three financial statements, accounting standards, audit discipline, tax awareness, working-capital understanding and the habit of interrogating ledgers. The gaps are usually in speed and framing.
- Excel and data handling: cleaning large ledger dumps, building bridges, using lookups and pivots, and keeping workbooks reproducible so a reviewer can follow every number.
- Revenue and margin analysis: separating growth caused by price, volume, product mix, acquisitions, geography or customer concentration.
- Issue writing: stating the observation, the evidence, the financial effect and the open question in a few lines.
- Management questioning: asking specific questions that can be answered with data rather than broad explanations.
The shift in mindset is from "is this accounting treatment supportable?" to "why did this number move, will it continue, what supports that explanation, and why should the deal team care?"
Where the jobs are and how the work is organised
FDD roles usually sit in transaction services or deals practices of large advisory firms, with smaller teams in mid-sized firms and some private-equity and corporate development functions. EY India's Strategy and Transactions careers page, for example, lists Transaction Diligence alongside investment banking advisory, valuation, modelling and economics, and Insolvency and Bankruptcy Code work within its transactions and corporate finance group. The work is project-based: the industry, the data quality and the deal question change from one engagement to the next, and timelines follow the deal rather than the financial year.
Positioning your background for an FDD interview
From statutory audit: lead with examples where you challenged a management explanation using data, found a cut-off or classification problem, or analysed a revenue or margin movement. Describe outcomes (what changed because of your work), not only procedures performed.
From industry or controllership: emphasise month-end closing, budget-to-actual analysis, working-capital management and any acquisition or integration you supported. Your advantage is knowing how management accounts are really prepared.
From tax: emphasise your ability to read assessment orders and quantify exposures, since pending tax assessments and litigation are a standard diligence area.
Whatever your route, prepare these exercises before interviews:
- Take a listed company's three-year statement of profit and loss and explain the main revenue and margin movements in five minutes.
- Build an EBITDA bridge from a mock data set and defend each adjustment.
- Explain why strong EBITDA can coexist with weak operating cash flow, using receivable, inventory and payable days.
- Write a one-page "top five findings" note on a mock target and present it verbally in ten minutes.
Is FDD the right move for you?
FDD suits a CA who enjoys understanding how a business really makes money, likes combining accounting with analytics, is comfortable challenging management and wants deal exposure. It also opens routes into wider deal advisory, corporate finance, private-equity support and corporate development. If your strongest interest is deep statutory reporting, tax litigation, pure valuation modelling or long-horizon planning, another specialisation may suit you better. A simple test: do you enjoy finding the commercial story inside a set of accounts and defending it with evidence under a deadline? If yes, the move is worth making, and your CA training already covers most of the foundation.
Updated on 27 September 2026: restructured around the work itself, added a working-capital normalisation example and receivable-day analysis, and linked ICAI's own description of investigation and valuation work by CAs.
