Getting a valuation wrong costs money in two directions: you can give away too much equity, or you can price yourself out of a deal. The hard bit is that ‘value’ is not a single number, it’s a range that depends on risk, terms and timing. Serious buyers and investors will test your assumptions, then cut out anything they can’t evidence. If you want a number that survives scrutiny, you need a method and a paper trail.
In this article, we’re going to discuss how to:
- Build a defendable valuation range using the main approaches buyers use
- Adjust your figures so earnings and cash flow reflect the real trading picture
- Stress-test the result so you don’t negotiate from a fantasy number
How To Value A Business: Start With The Deal Context
Before any maths, be clear what you’re valuing. A 100% sale to a trade buyer is not the same as raising capital from an investor taking a minority stake. Control matters because a controlling buyer can change strategy, replace suppliers, cut costs or merge operations, which changes the economics.
Timing matters too. A valuation for a funding round is often about what the business can do next, while a sale process is usually anchored in what it has already done, plus what can be evidenced in the pipeline. Terms matter as well. A headline price with a big earn-out (future payments tied to performance) is not the same as cash at completion.
Write down three things early: what’s being sold (shares or assets), how much control is changing hands, and whether the price is all cash or partly conditional. Those details shape which method carries the most weight.
The Three Valuation Methods Buyers Actually Use
Most deals use more than one method, then reconcile the answers into a range. If someone quotes a single neat number without showing workings, treat it as a negotiating position, not analysis.
1) Earnings Multiple (Most Common For Trading Firms)
This takes a measure of maintainable earnings and applies a multiple. The earnings figure is often EBITDA (earnings before interest, tax, depreciation and amortisation). Buyers like EBITDA because it removes financing structure and some accounting noise, but it can also hide cash issues, so it needs checking against cash flow. Understanding this approach is an important part of how to value a business before you sell or raise capital, as investors and potential buyers will look beyond EBITDA to assess the company’s overall financial health and future earning potential.
The multiple reflects risk and quality. A stable firm with recurring revenue and low customer concentration usually gets a higher multiple than a business reliant on 1 client or a single founder.
2) Discounted Cash Flow (DCF) (Best For Cash Flow Logic, Easy To Abuse)
A DCF values the business based on future free cash flows, discounted back to today using a discount rate (often framed as a weighted average cost of capital, which is the blended cost of equity and debt). It’s intellectually tidy, but small changes in growth, margins or discount rate can move the valuation a lot.
Use DCF as a cross-check and a way to understand which assumptions drive value. Don’t use it to manufacture a number you ‘need’ for the deal.
3) Asset-Based Valuation (Floor Value In Some Cases)
This looks at what the business owns minus what it owes. It’s most relevant for asset-heavy firms, property-backed businesses, or where trading profits are weak or volatile. For most service firms, the asset-based approach often produces a low number because the real value sits in people, customer relationships and processes, which don’t sit on the balance sheet in a simple way.
Still, it’s a useful floor: if your earnings-based valuation implies a price below net assets, you need a reason.
Normalise Earnings Before You Apply Multiples
Valuation arguments usually fail at the ‘maintainable’ part. Normalising means adjusting reported figures to remove one-offs and present what a new owner could reasonably expect.
Common adjustments include:
- Owner pay and perks: If you underpay yourself, a buyer will add a market-rate salary cost. If you overpay, they’ll adjust the other way. Personal expenses run through the business will be stripped out, but you’ll need documentation.
- One-off costs or income: Legal disputes, redundancy costs, a large bad debt, or a one-time grant. The key question is whether it repeats.
- Related-party arrangements: Above-market rent to a connected landlord or non-commercial supplier pricing. Buyers will restate to market terms.
Be strict with yourself. If you ‘add back’ costs, you’re claiming they won’t exist for a new owner. That claim needs to be credible in the real world and backed by evidence.
Working Capital And Debt: The Part That Trips Up Founders
Even when you agree a valuation, the final price can shift based on debt and working capital. Working capital is the day-to-day funding tied up in stock, trade debtors and trade creditors. A growing business can show good profits while consuming cash because more money is trapped in receivables or inventory.
Deals often use a ‘cash-free, debt-free’ structure, meaning you keep or pay off debt, and the buyer expects a normal level of working capital left in the business. If you extract too much cash or let payables build up, the completion accounts can reduce what you receive.
If you’re raising capital, the same logic shows up as a discussion about runway and burn. Investors will look at cash conversion, not just the profit and loss account.
What Moves The Multiple Up Or Down
Multiples are a shorthand for risk, and risk is usually about concentration, repeatability and dependency. You can’t talk a multiple into existence. You can, however, explain why your risk profile is lower than it looks on the surface.
Factors that often push valuations down:
- Revenue concentrated in a few customers, channels or contracts
- Founder dependency for sales delivery, key relationships or technical know-how
- Weak gross margin control, or margin tied to one supplier
- Messy accounts, late filings, or poor bookkeeping discipline
Factors that often support higher multiples:
- Contracted or subscription revenue with low churn
- Documented processes and a management team that runs day-to-day operations
- Evidence of repeatable customer acquisition and stable unit economics
- Clean legal position on IP (intellectual property), key contracts and employment terms
Note the word ‘evidence’. Buyers and investors won’t pay extra for stories, they pay for proof.
Cross-Checks: Sanity Tests That Stop You Fooling Yourself
Once you have a draft valuation range, run checks that force you to look at it like a buyer.
Payback logic: If a buyer pays £5m for a business producing £1m of EBITDA, that’s a 5x multiple. Ask what needs to be true for them to get their money back after tax, capex (capital expenditure) and working capital. If the implied payback is too long without clear growth, the number is fragile.
Sensitivity: Change 1 or 2 assumptions, such as margin falling by 2% or losing a top customer. If the valuation collapses, your business risk is being underpriced in your model.
Compare methods: If EBITDA multiple says one thing and DCF says something wildly different, don’t average them. Identify what assumption causes the gap and decide whether it is defendable.
Preparing Your Valuation Pack Without Over-Selling
A valuation stands up when the documents match the story. The aim is not to create a glossy narrative. It’s to remove reasons for a buyer to reduce price during diligence.
Useful inclusions:
- 3 years of statutory accounts and the latest management accounts, with a bridge explaining differences
- A clear reconciliation from revenue to cash received, showing debtor days and aged receivables
- Customer concentration table, contract terms, renewal dates and termination clauses
- Normalisation schedule showing each adjustment with supporting evidence
- Schedule of debt, leases and contingent liabilities you know about
Keep forecasts sober. A forecast isn’t there to impress. It’s there to show you understand your drivers and have a plan that doesn’t rely on perfect execution.
Conclusion
Valuing a company before a sale or capital raise is about building a range that can survive hard questions, not inventing a number you’d like to see. Start with context and terms, then use at least 2 methods, with clean normalised earnings and clear cash logic. If the model only works when everything goes right, it won’t hold up in a negotiation.
Key Takeaways
- How to value a business starts with deal terms, control and what’s included in the price
- Use multiples, DCF and asset checks together, then reconcile based on evidence and risk
- Normalised earnings, working capital and debt treatment often matter more than the headline multiple
FAQs
What’s the difference between valuation and price?
Valuation is an evidence-based range using assumptions and methods. Price is what you actually agree after terms, risk sharing and negotiation.
Is EBITDA the same as cash flow?
No. EBITDA ignores working capital movements, tax, interest and capex, so it can look healthy while cash in the bank falls.
How do investors value a minority stake in a fundraise?
They usually start with the same methods but pay close attention to dilution, preference terms and what rights attach to the new shares. A ‘high’ valuation can still be expensive if the terms transfer downside risk to founders.
Can I value my business using public company multiples?
You can use them as a rough sense check, but listed firms differ in scale, liquidity and access to capital. Any comparison needs adjustments and a clear explanation of why it’s relevant.
Sources Consulted
- UK Government: Valuing your business
- HMRC Shares and Assets Valuation Manual
- ICAEW: Business valuation resources
- Financial Reporting Council (UK)
Disclaimer
This article is for information only and is not financial, legal, tax or investment advice. Valuation depends on facts, deal terms and risk, so a method that fits one business may not fit another.
