Why Accounting Matters in Investment Banking

Introduction

A common assumption among people heading into banking is that accounting belongs to the back office: the auditors, the controllers, the tax team. The work itself says otherwise. A valuation is a multiple applied to reported earnings, a financial model is three accounting statements projected forward, and a purchase agreement prices working capital, debt and earnouts using definitions taken from the accounts. Each of those steps inherits the accounting choices behind the numbers, and a multiple applied to a misread figure produces a valuation that is precise and wrong.

Bankers do not need to keep books. They need to read the three financial statements fluently, know which figures depend on judgment, and trace what a transaction does to income, cash and the balance sheet. That knowledge enters the job at every stage, as real cases show: accounting has changed what buyers paid and what acquisitions turned out to be worth. Not all of accounting is the banker's job, though, and large parts of it can safely be left to others.

The two workhorses of banking valuation both begin in the financial statements. A trading multiple such as enterprise value to earnings before interest, taxes, depreciation and amortization (EBITDA) divides a market value by an earnings figure built from the income statement, and the EV/EBITDA multiple is only comparable across companies if their EBITDA is measured the same way. A discounted cash flow (DCF) projects free cash flow, which is itself built from earnings before interest and taxes (EBIT), the tax on it, depreciation, capital expenditure and the change in working capital, every one of them an accounting line.

That dependence matters because accounting standards leave room for judgment. Two companies with identical cash flows can report different EBITDA because one capitalizes a cost that the other expenses. Consider a business with $1,000 of revenue that spends $20 developing internal software:

The business is the same in both columns, and so is the cash it spent. Yet the capitalized version shows 10% more EBITDA, and a buyer paying 10x that figure would pay $200 more for it. The rules that decide when a cost can be capitalized, and why the choice moves EBITDA so directly, are covered in capitalizing vs expensing costs.

Normalizing Before Multiplying

Reported earnings also contain items that will not recur: a legal settlement, a restructuring charge, a gain on selling a building. Bankers strip these out to reach normalized earnings, the run-rate profit of the business as it will continue. The judgment is partly accounting, because the reader has to know where such items appear in the statements and footnotes, and partly commercial, because a "one-time" charge that recurs every year is a cost of doing business. How these items are presented, and the tests bankers use before removing them, are set out in one-time items on the income statement.

The hardest calls involve costs that recur but do not use cash. Stock-based compensation is the standard example: it pays employees in shares rather than cash, so many companies add it back in their adjusted EBITDA, yet it is a real cost to shareholders through dilution. If the charge equals 15% of a software company's adjusted EBITDA, rejecting the add-back cuts the implied value by the same 15% at any multiple, and the accounting behind the charge is explained in stock-based compensation accounting.

A three-statement model is the backbone of most banking analysis: merger models, leveraged buyout (LBO) models and many DCFs sit on top of one. It projects an income statement, a balance sheet and a cash flow statement and links them so that every assumption flows through all three. Net income feeds retained earnings; depreciation reduces the asset base and is added back to net income on the cash flow statement; borrowing raises cash and debt together. A model whose balance sheet does not balance has broken the accounting identity, which means some flow has been counted once instead of twice or not at all.

Building the model is a valuation and modeling skill, covered in the Valuation guide's article on the three-statement model. Building it correctly is an accounting skill. The analyst has to know that a dividend reduces cash and retained earnings but never touches the income statement, that an increase in receivables consumes cash even though revenue was booked, and that a non-cash impairment reduces net income without affecting cash. Each link is explained in how the three financial statements link. The questions a model answers depend on the same fluency:

Three-statement model

A financial model that projects a company's income statement, balance sheet and cash flow statement together, linked so that each assumption flows through all three and the balance sheet balances in every period. It is the base layer for merger, LBO and many DCF models.

Before a buyer signs, its advisers test whether the numbers it is paying for are accurate and repeatable. This is financial due diligence: rebuilding EBITDA from the general ledger, reconciling revenue to cash, examining reserves and accruals, and identifying debt-like items. The accountants who perform it produce a quality of earnings report, and bankers on both sides use it to defend or challenge the price.

When diligence misses something, the consequence usually appears later as an accounting charge. Caterpillar acquired ERA Mining Machinery, the parent of the Chinese mining equipment maker Zhengzhou Siwei, in mid-2012. By January 2013 it announced in a filing that Siwei's senior managers had engaged in accounting misconduct for several years before the acquisition, and that it would record a noncash goodwill impairment charge of about $580 million, or $0.87 per share. A charge of that size, recorded within months of closing, is what a diligence miss looks like in the financial statements.

The lesson is not that every target hides problems. It is that a banker who reads the statements can ask the right questions early: why receivables grew faster than revenue, why inventory reserves fell, why operating cash flow lags net income year after year. Those questions come from accounting knowledge, and they are cheaper to ask before closing than after. How the write-down itself is measured, and why it reaches the income statement but not cash, is explained in goodwill and goodwill impairment.

The Sell Side Uses the Same Knowledge in Reverse

Advisers to a seller prepare for exactly this scrutiny. Before a sale process launches, the company and its accountants often commission a sell-side quality of earnings report, reconcile the management accounts used internally to the audited figures, and document every adjustment in the adjusted EBITDA that the marketing materials will present. When the business for sale is a division rather than a standalone company, its results have to be carved out of the parent's accounts, with shared costs allocated and assets and liabilities separated, a process covered in carve-out financial statements. A seller whose numbers survive the buyer's diligence intact keeps its price; one whose adjustments collapse under testing usually gives value back late in the process, when it has the least negotiating leverage.

Accounting does not only measure deals after the fact. It has repeatedly shaped how they were structured and priced. The clearest historical case is pooling of interests, a method US companies could use for stock-for-stock mergers until 2001.

Pooling of interests

A method of accounting for business combinations, banned in the United States from mid-2001, that combined the two companies' book values without recording the acquired company at fair value. Because no goodwill was created, the combined company avoided the goodwill amortization charges that purchase accounting then required.

Under the alternative, the purchase method, the buyer recorded goodwill and amortized it against earnings for years. Pooling avoided that charge, so deals were structured to qualify for it. The Journal of Accountancy's account of the change notes that some empirical evidence suggests companies paid a premium to pool to avoid goodwill amortization. Statement 141 of the Financial Accounting Standards Board prohibited pooling for business combinations initiated after June 30, 2001, and Statement 142 replaced goodwill amortization with impairment testing. If that evidence is right, buyers were paying more for an accounting outcome that changed reported earnings but not cash.

Where Accounting Shapes Deals Today

Pooling is gone, but the same pattern runs through modern transactions, most visibly in the earnings-per-share test that boards apply to almost every public acquisition, covered in the Valuation guide's article on accretion and dilution analysis. Accounting outcomes still decide a large part of how a deal is assessed and documented:

Each item has its own article in this guide. The fair value exercise that drives the new amortization is walked through in purchase price allocation, and the tax side, where the form of the deal can be worth more than many negotiated terms, is explained in stock deals vs asset deals.

Outside the merger model, two groups depend on a banker's command of the accounts: the investors who buy the securities a bank underwrites, and the clients it advises. Each relies on reported numbers in a different way, and each exposes a banker who cannot read them.

Offering Documents and Comfort Letters

Bankers who raise equity and debt meet accounting through the offering document. A prospectus for an initial public offering or a registered bond deal contains audited financial statements, management's discussion of the results, and often pro forma figures, and the underwriters who sell the securities can be liable under Section 11 of the Securities Act for material misstatements in it. Their protection is to show that they made a reasonable investigation, and accountants play a defined part in that record.

Comfort letter

A letter from a company's independent auditors to the underwriters of a securities offering, reporting on procedures the auditors performed on financial information in the offering document and on changes since the latest audited balance sheet. It supports the underwriters' due diligence defense; it is not an audit opinion.

The Public Company Accounting Oversight Board's standard on letters for underwriters describes the comfort letter as one of a number of procedures an underwriter can use to establish that it conducted a reasonable investigation. In practice, the deal team reads which figures in the document the auditors can check back to the accounting records and which they cannot, and the numbers outside that coverage get extra diligence.

Accounting also decides what the document must contain. A company that has bought a significant business has to include the acquired business's own audited statements and pro forma combined figures, and the Securities and Exchange Commission's amendments to the disclosure rules for acquired and disposed businesses measure significance with investment, asset and income tests, requiring one year of audited statements for an acquisition whose largest test falls between 20 and 40 percent. A target that has never been audited can therefore delay a financing by months, which is why capital markets bankers ask about audit status, and about any recent acquisitions, at the very start of a mandate.

Speaking the Client's Language

Bankers advise people who think in reported numbers. A public company's board watches earnings per share, guidance and the consensus estimates analysts publish; a chief financial officer manages the effective tax rate, the leverage ratio its rating depends on, and the covenants in its credit agreement. Advice that ignores how a transaction will look in next quarter's results will not be taken seriously, however sound its economics. A divestiture, for example, raises immediate questions the client will ask before the strategic ones: whether the sale produces a reported gain or loss, whether the business must be shown separately as a discontinued operation, and what the remaining company's margins look like once it is gone. The presentation rules behind those answers are covered in discontinued operations.

The conversation also runs the other way. Clients, investors and rating agencies present their own adjusted versions of the numbers: adjusted EBITDA, free cash flow, organic growth, each defined by the company. A banker has to reconcile these to reported figures before relying on them, and the reconciliations to figures under generally accepted accounting principles (GAAP) that public companies must publish are covered in non-GAAP measures. The starting point for all of this is the company's own filings, read in a particular order, as described in how to read a 10-K and 10-Q.

Accounting is a large field, and much of it belongs to people with different jobs. The useful division for a banker is between topics to master, topics to recognize and topics to leave to specialists:

The first row is where interviews concentrate and where a junior banker's credibility is earned. The second row is what separates an analyst who can build a model from one who can tell when the inputs are wrong. The third row is genuinely optional: the vocabulary of debits and credits is worth recognizing, but bankers reason in statement effects rather than ledger entries.

Building the Knowledge in Order

The guide follows the order in which the knowledge compounds:

Accounting is also one of the most consistently tested technical areas in banking recruiting, from first-round questions on how the statements connect to multi-step transaction questions in superday interviews. The format of those questions, and how candidates are expected to answer them, is covered in how accounting is tested in banking interviews.

The reason to learn accounting properly, rather than memorizing answers, is that the job keeps returning to the same question in new forms: what does this number actually measure, and what would it be under different rules? A banker who can answer that question can value a business, check a model, challenge a diligence finding and explain to a board why a deal that looks expensive on reported earnings may be fairly priced on cash. That is the use of accounting in banking, and it is a different skill from keeping the books.