Business valuation: Why cash flow is more accurate than EBITDA

When valuing a business ahead of a sale, many owners will instinctively refer to their business’ bottom line, making either net profit or EBITDA the core of their valuation. However, a more accurate way to measure a business’ value, and one that is potentially more compelling to a buyer, is by looking at its cash flow.

Sellers using EBITDA to value their business typically act under the assumption that healthy profit and loss statements automatically translate to a strong valuation. However, sophisticated buyers will see through this, understanding that while profit is an accounting concept, cash flow reflects reality.

Even with impressive profits, businesses can have high capital maintenance requirements; they can be strapped for cash and struggling to pay suppliers, creditors and even staff. Conversely, a business with modest profits but strong free cash flow has sustainable operations, can readily invest in growth and would be able to generate substantial returns for a new owner.

Profit vs Cash: The disconnect
Understanding the paradox that makes cash flow a more accurate valuation gauge than profit is critical for anyone looking to prepare their business for sale or simply to gain an idea of its value.

Profit is often seen as the best measure of a business’ worth as a result of accrual accounting, which records transactions when they occur, rather than when the cash involved actually changes hands. Therefore, profit and loss accounts may show £100,000 on the bottom line, but if this revenue hasn’t yet been collected and the business has undertaken substantial expenditure or deployed working capital, the firm’s bank account may in fact be empty.

Simply put, profit is what a business has earned on paper after costs, whereas cash flow is what the company actually has to hand in the bank. The importance of this point is that buyers acquire businesses for future cash flows, not for accounting profits.

How EBITDA falls short in business valuations
EBITDA has become the standard metric for valuing a business, particularly when it comes to applying a valuation multiple. However, there are critical blind spots in using EBITDA that mean it can dramatically overstate the actual value of a business.

Crucially, EBITDA does not account for three crucial elements of business operations that consume a major amount of cash: working capital, capital expenditures and tax obligations.

Working capital requirements - As businesses grow, they will typically have more cash tied up in inventory, accounts receivable and prepaid expenses. A company generating £500,000 in EBITDA might require £200,000 in additional working capital to support that growth. This money never becomes distributable cash and this working capital absorption is often the largest source of cash leakage in growing businesses. However, EBITDA completely overlooks it.

Capital expenditures - Replacing equipment, upgrading technology, buying vehicles, repairs and improvements are just a few of the real cash outflows essential for maintaining operations. However, because these appear on the balance sheet rather than the income statement, they are likewise not factored into EBITDA. A business with £300,000 EBITDA requiring £100,000 in annual capital expenditure has 33 per cent less distributable cash than its EBITDA figure suggests.

Tax obligations - While EBITDA measures pre-tax performance, actual cash available to owners comes after tax. In valuation contexts, buyers will focus on after-tax cash flows as these represent what can actually be distributed or reinvested in the business.

Unless a business has no ongoing capital requirements, EBITDA should not be used to calculate its valuation. Clearly, this makes it an inaccurate way to gauge actual cash generation and a poor basis for valuing almost any business.

The issue with EBITDA and cash flow conversion
The cash conversion ratio is used to measure the efficiency with which EBITDA is converted into actual free cash flow and is something that sophisticated buyers will closely scrutinise. In brief, the cash conversion ratio reveals whether strong EBITDA will actually translate to usable cash.

A healthy business will typically achieve a cash conversion ratio above 1.0, meaning it generates more operating cash than suggested by its reported EBITDA. However, businesses with poor working capital management, high capital intensity or operational inefficiencies often convert just 50-70 per cent of their EBITDA into free cash flow.

Most senior M&A advisers will agree that businesses with weak cash conversion usually do not justify high EBITDA multiples. Vendors should be aware that a savvy buyer will not simply settle for a valuation based on EBITDA, they will closely evaluate how efficiently these earnings convert into cash flow.

Weak conversion potentially indicates a number of issues, such as unsustainable working capital strategies, hidden liabilities or operational inefficiencies, that will result in a buyer placing a lower valuation on the business or walking away entirely.

The following example of a fictional company is based on an actual deal that we have been involved in.

Tech-e-logic Ltd, a UK-based software provider, attracted significant buyer interest as a result of its impressive reported EBITDA of £2 million and robust revenue growth over three years. An acquisition with a larger regional company (the buyer’s first takeover) was agreed at a 6.5x EBITDA multiple, resulting in a valuation of £13 million.

However, post-acquisition, the new owners soon discovered that Tech-e-logic’s operating cash flow was persistently hampered by extended customer payment terms and rising inventory costs. The company's working capital requirement had ballooned as sales grew, with over £850,000 tied up in receivables and unbilled project costs.

Despite solid profits, just 40 per cent of Tech-e-logic’s EBITDA converted to free cash flow in the prior year, as evidenced by the company's cash flow statement - meaning less than £800,000 was actually available for distribution or investment. The buyer’s initial valuation, having primarily focused on EBITDA and disregarded cash conversion issues, proved far too high.

Within 12 months, Tech-e-logic struggled to meet both debt obligations and investment needs, prompting the buyer to write down the goodwill on its balance sheet as the true sustainable value was closer to £8 million than the headline deal price.

Poor cash flow can doom even profitable businesses
Research indicates that more than 40 per cent of all businesses fail within the first five years. The number one cause of business insolvency? Poor cash flow management, and that includes profitable businesses.

This is best illustrated by the issue of “overtrading”. In this scenario, a business can be winning new work, growing its revenue and generating what appears to be healthy EBITDA. However, it falls into insolvency due to running out of cash prior to customers paying.

This is most likely to happen when a business is offering customers longer payment terms than it has with its suppliers (e.g. 60 days vs. 30 days or on delivery). This will mean that each new sale is actually draining cash, rather than generating it, even though accounts show profit.

Consider a growing manufacturing business that finally secures a major contract worth £200,000, which is reported in its profits, despite payment terms being 90 days. However, in order to fulfil the contract the firm needs to buy around £150,000 in raw materials upfront and pays on delivery as per an existing supplier agreement.

Despite showing significant profit growth, the business is actually in a far worse position in terms of its cash flow and is desperately struggling to fill a working capital gap, ultimately falling into administration.

Overtrading boils down to a simple proposition, if a business is constantly chasing sales, while not simultaneously chasing money, they can end up running out of cash and collapsing. Again, demonstrating how cash flow trumps EBITDA as a gauge of a business’ true value.

Seeking a sale amid strong growth and profitability, Reliance Building Works presented itself as a prime M&A target, showcasing three consecutive years of profit growth and EBITDA exceeding £1.5 million.

The business pursued a sale at an ambitious valuation of £10 million (6.7x EBITDA), supported by aggressive revenue expansion plans and rising order books. During due diligence, however, prospective buyers discovered that Premier was suffering from serious overtrading.

Customer invoices were routinely paid on 90-day terms, while subcontractors and suppliers demanded payment within 30 days, resulting in a persistent cash gap. Over £1 million was locked up in overdue receivables and raw material advances, with the bank overdraft at its limit.

Despite healthy EBITDA and profitable projects, Premier’s operating cash flow was negative during peak trading periods. Buyers calculated that ongoing sales growth would require either outside financing or a substantial equity injection, facts that were not apparent in headline profit or EBITDA measures.

As a result, a series of experienced industry buyers withdrew from the process, concluding that the business would require significant working capital and posed unacceptable liquidity risk, leaving the owners unable to complete the sale at the proposed valuation. [Please note: Fictional case study, based on real-life deals]

The working capital trap
Issues around working capital can become particularly critical (and contentious) during a business sale, with many sellers losing significant value over poor understanding of how sale proceeds are impacted by cash flow dynamics.

M&A deals are often structured on a “cash-free, debt-free” basis, meaning that sellers can withdraw all cash at any point prior to closing. Buyers, however, require adequate working capital remaining to operate the business. Therefore, a sale agreement typically establishes a “working capital target” (typically using a historical average or recent period-end valance), with the purchase price adjusted either up or down on whether actual working capital upon closing meets this figure.

Sellers often underestimate the significance of working capital until it leads to a deal collapsing, with working capital disputes a common cause of deal failure. Issues arise due to buyers wanting enough working capital to continue operations without injecting additional funds immediately post-sale, while vendors seek to maximise the cash they take out of a business.

Poorly advised sellers can easily unwittingly lose value during working capital negotiations. If a business historically carries £200,000 in working capital but the seller allows a target of £250,000, that's £50,000 directly reducing sale proceeds, or potentially £250,000-£500,000 in lost enterprise value if the business trades at a 5-10x multiple.

DCF method demonstrates importance of cashflow
Considered the most theoretically sound method of valuing a business, the Discounted Cash Flow (DCF) approach is explicitly built around using projected free cash flows, rather than EBITDA. Many more sophisticated buyers will use DCF, as it enables them to calculate the present value of all future cash that can be extracted from the business, discounted at a rate reflecting risk and the time value of money.

The DCF method consists of a series of steps. The buyer will start with the operating income (EBIT) of the business, then adjust for taxes to calculate post-tax operating profit. Non-cash expenses (depreciation/amortisation) are then added back, before subtracting the capital expenditures needed to maintain operations and the increases in working capital required to support the company’s growth. The end result is the company’s free cash flow - what can actually be extracted and distributed.

The DCF approach takes a company’s EBITDA and then exposes it to reality, factoring in all the cash-consuming activities that a valuation based around EBITDA would ignore. Any valuation which uses EBITDA multiples without adjusting for these factors will inevitably overvalue a business that burns through cash and undervalue one that generates cash effectively.

The cash flow waterfall: How profit transforms into cash (or not)
Another valuable method of visualising how much actual cash a business has based on its accounting profits is to use the “cash flow waterfall”. The cash flow waterfall framework shows how profit transforms (or fails to transform) into actual cash flow.

The cash flow waterfall starts with the net profits from a company’s profit and loss statement. Non-cash expenses that reduce reported profit without consuming cash (depreciation and amortisation) are then added back in, while working capital changes and capital expenditures are subtracted.

Financing outflows that remove cash from the business, such as loan repayments and dividend distributions are also subtracted, resulting in a figure that shows the actual cash a business has in the bank available to spend.

Strategic imperatives for valuation and sale preparation
When preparing a business for sale, business owners should prioritise generating strong cash flow in order to attain a high valuation that can be backed up by an approach such as the discounted cash flow method of cash flow waterfall.

Optimise working capital management well in advance - Reduce days sales outstanding, manage inventory efficiently and negotiate favorable supplier terms. Demonstrating strong working capital efficiency by improving cash conversion will directly increase value.

Track and present cash conversion metrics - Calculate and highlight your cash conversion ratio, free cash flow margin and cash conversion cycle. Buyers increasingly demand these metrics and strong performance will command a premium valuation.

Understand and negotiate working capital targets carefully - Engage experienced advisors who can help establish favorable working capital definitions and targets in sale agreements. This often overlooked area can add or lose hundreds of thousands in final sale proceeds.

Prepare comprehensive cash flow projections - While profit and loss forecasts show growth potential, sophisticated buyers will focus on projected free cash flows. Demonstrate not just revenue and EBITDA growth but how these translate into distributable cash after working capital and capital expenditure requirements.

Address capital intensity transparently - If your business requires ongoing significant capital expenditure, explain the strategic rationale and demonstrate how these investments generate returns. Attempting to hide capital requirements through creative accounting only damages credibility when due diligence reveals the truth.

How to use EBITDA in valuation
While an accurate valuation is ultimately driven by cash flow, EBITDA still offers a useful reference point for comparing and benchmarking businesses, especially in the early stages of a pre-sale analysis.

While it can be highly misleading when used in isolation, EBITDA remains an important valuation tool across corporate finance, private equity, and M&A. Here are some of the stages of a valuation process in which EBITDA figures can prove useful.

Simplifying comparability - EBITDA provides a standardised measure of operating performance that removes the effects of differing tax regimes, capital structures and depreciation policies. This can help analysts make quick comparisons across businesses or industries, especially in sectors with varying asset bases or financing methods.

Reflects operational profitability - By excluding non-operating factors, EBITDA highlights the company’s core earning power from ongoing operations. It is often used as a proxy for the underlying economics of the business, illustrating how much value operations generate before financing and accounting adjustments.

Applying market multiples - In transaction and market-based valuations, EBITDA often serves as the base for applying valuation multiples (Enterprise Value/EBITDA). This is particularly useful when benchmarking against comparable deals or publicly traded peers where detailed cash flow data may not be available.

Easier to calculate and communicate - EBITDA is typically easier and quicker to derive than free cash flow, especially for privately held or smaller companies lacking detailed capital expenditure and working capital forecasts. While this doesn’t mean it should be used as a basis for a formal valuation, it can offer a straightforward metric that investors, lenders, and advisers can easily communicate and understand.

Starting point for DCF analysis - While DCF focuses on free cash flow, EBITDA provides a consistent foundation for building the forecast. Adjusted EBITDA can be used to estimate sustainable operating performance before applying capital and working capital assumptions.

For a more in-depth look at the correlation between EBITDA value and sale price, check out the Business Sale Report Deal Value Index. While this is not a valuation tool, experienced M&A experts can use it as a guide to inform a valuation process that ultimately focuses on cash flow.

While EBITDA is a useful starting point for business valuation discussions and enables quick comparisons across companies, it fundamentally fails to capture the cash-generating capacity that ultimately determines business value.

By the same token, EBITDA can potentially assign a business a far higher valuation than its cashflow would support. A buyer who knows what they are doing will look into the business’ cash flow, working capital, net debt and expenditures and quickly see that reality does not support this valuation, potentially eroding trust early on in negotiations.

For business owners, the message is unambiguous: profit builds confidence, but cash is king. In valuation contexts, buyers acquire future cash flows, not accounting profits. A business that generates moderate EBITDA but that efficiently converts this into free cash flow is ultimately worth substantially more than one with higher EBITDA but poor cash conversion.

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