How to value a small business in the UK

Valuing a small UK business is not a science. It is a negotiated outcome between what a seller believes their business is worth and what a buyer is willing to pay, constrained by what is financially justifiable to a lender. The final price is usually somewhere between three valuation methods applied by reasonable people to the same set of numbers.

This guide covers the four most commonly used methods for valuing UK SMEs, the multiples that currently apply to different sectors, what destroys value, and what you can do in the next 12 months to increase a business valuation before going to market.

Method 1: Earnings multiple (EBITDA or SDE)

The earnings multiple method is the most widely used approach for SMEs with profits above £100,000. It applies a multiple to a normalised measure of earnings. Two measures are used:

EBITDA (Earnings Before Interest, Tax, Depreciation and Amortisation) is used for larger businesses or when a buyer intends to finance the acquisition with debt. It strips out financing decisions and accounting policies to show the raw operating profitability of the business.

SDE (Seller’s Discretionary Earnings) is used for owner-managed businesses where the owner’s salary is a significant cost. SDE adds back the owner’s salary and personal expenses to show what the business would earn under any owner — the true economic capacity of the business without the incumbent owner’s personal costs.

UK SME EBITDA multiples by sector (2025/26)

Method 2: Revenue multiple

Revenue multiples are used when a business has strong growth, a dominant market position, or recurring revenue but is not yet profitable. They are common in SaaS, agencies, and subscription businesses. A typical revenue multiple for a UK SME is 0.5–2× annual revenue, rising to 3–5× for high-growth recurring revenue businesses.

Method 3: Asset valuation

Asset valuation (net asset value) adds up the fair value of all assets and subtracts all liabilities. It is most relevant for businesses where the assets are the primary value driver — property companies, asset-heavy manufacturers, investment holding companies. For service businesses and most SMEs, asset value understates the true value of the business because it ignores goodwill, customer relationships, and intellectual property.

Net asset value is often used as a floor valuation: the minimum a rational seller would accept, since it represents what you would receive if you simply wound up the company and sold the assets.

Method 4: Discounted cash flow (DCF)

DCF values a business based on the present value of its expected future cash flows, discounted at a rate that reflects the riskiness of those cash flows. In theory it is the most rigorous method. In practice, for small UK businesses, the assumptions required (future growth rate, discount rate, terminal value) are so uncertain that the output is highly sensitive to small changes in inputs. DCF is best used as a sense-check rather than a primary method for SME transactions.

What increases a business valuation

• Recurring and contracted revenue: Revenue that renews automatically (subscriptions, retainers, long-term contracts) is valued significantly higher than one-off project revenue. A 70% recurring revenue mix might add a full turn to the multiple.
• Customer concentration reduction: A single customer representing more than 20% of revenue is a material risk that buyers discount. Reducing concentration from 40% to 15% before a sale can increase the achievable multiple.
• Systems and processes (not people): A business that operates through documented systems and processes is more valuable than one that runs through the founder’s head. If the founder left tomorrow and the business could not function, the business is not worth what its P&L suggests.
• Clean financial records: Three years of professionally prepared, clean management accounts and statutory accounts. Buyers and their advisers will scrutinise every expense. Personal items run through the business (common and understandable) must be clearly identified and normalised.
• Margin improvement: Every £1 of additional EBITDA added in the 12 months before sale is worth 4–6× £1 in valuation. A £10,000 margin improvement is worth £40,000–£60,000 in enterprise value.
• Growth trajectory: A business growing at 15% annually commands a higher multiple than one flat or declining at the same current profit level. The buyer is partly paying for future earnings.

What destroys valuation

• Key-person dependency (the founder is the business)
• Customer concentration above 20%
• Lease obligations that a buyer must assume
• Deferred tax liabilities and pension deficits
• Poor or inconsistent financial records
• Declining margins in the most recent 12–24 months
• Earn-out requirements (buyer does not trust stated profitability)

The 12-month plan before selling

1. Get three years of clean statutory accounts prepared by a reputable firm
2. Build a management accounts pack you run monthly
3. Document all key processes and train a team member to execute them
4. Review all customer contracts — ensure they are assignable to a new owner
5. Identify and clean out any personal costs in the P&L
6. Focus on gross margin improvement — even a 2% improvement compounds significantly in enterprise value
7. Reduce debtor days to demonstrate tight financial management
8. Get an informal valuation 12 months before you intend to go to market