How To Value Shares In A Private Company In The UK

Putting a price on your company’s shares isn’t just an investor exercise - it’s something most small businesses need to do at key moments, from bringing in a co-founder to buying back a departing shareholder’s stake.

Because there’s no public market setting the price for private company shares, the question “how are shares valued?” can feel murky. Don’t stress - with a clear method, good data and the right legal steps, you can reach a fair, defensible number and stay compliant under UK law.

In this guide, we walk through how to value shares in a private company, the factors that move the dial, a step-by-step process you can follow, and the legal and tax points to get right.

What Does “Valuing Shares” Actually Mean?

At a basic level, valuing the shares in a private company means estimating the fair market value of the business, then translating that into a price per share - and adjusting for the specific rights and risks attached to the particular shares being valued.

Two layers are happening at once:

• Company level: What is the whole business worth today, based on its cash flows, assets, market position and prospects?
• Share class and stake level: What portion of that value accrues to this specific parcel of shares, given their rights (e.g. ordinary vs preference), percentage holding, and whether the stake is controlling or minority?

Because private companies don’t have daily trading to set a market price, you’ll rely on accepted valuation methods and clear assumptions. The goal is a valuation that is reasonable, consistent with market practice, and well documented - so it stands up to scrutiny by buyers, auditors, HMRC or a court if a dispute arises.

Common Scenarios When You’ll Need A Share Valuation

You’ll typically need a share valuation in situations like these:

• Issuing new shares to a founder, investor or employee: To agree pricing for a new round or allocation and to assess dilution. If you’re granting tax-advantaged options, you’ll also need to agree HMRC valuations for EMI options (typically “AMV” and “UMV”).
• Buying back shares: A company buyback requires a fair price and careful compliance. You’ll usually want a formal valuation and a Share Buyback Agreement to document terms.
• Shareholder exits and internal transfers: When a co-founder leaves or a minority shareholder wants to sell, you’ll need a method for setting price - ideally already agreed in your Shareholders Agreement.
• Fundraising negotiations: Even if investors propose a price, you should understand your own valuation and the drivers behind it to negotiate confidently.
• Employee incentive plans: For option grants and refreshers, you’ll need updated valuations to set exercise prices and to assess any potential tax impact.
• Financial reporting and tax: Certain accounting events, group restructures and transactions can require a supportable valuation for auditors and HMRC.
• Disputes and compulsory transfers: If your Articles of Association or shareholders’ terms trigger a forced sale (e.g. bad leaver), a pre-agreed valuation mechanism will save headaches.

How Are Shares Valued In A Private Company? Core Methods

There’s no single “right” number. Instead, you pick a method (or triangulate a few) that best fits your stage and business model, then adjust for the rights and risks of the shares being valued.

1) Income Approach (Discounted Cash Flow)

This estimates the present value of the future cash the business can generate. You’ll forecast free cash flows (usually 3–5 years), apply a discount rate that reflects the risk of those cash flows, and include a terminal value for the period beyond your forecast horizon.

Best for businesses with reasonable visibility on revenues and margins. Less reliable for very early-stage startups without stable cash flows.

2) Market Approach (Multiples)

Here you value the company by applying market multiples (like EV/Revenue or EV/EBITDA) derived from comparable listed companies or recent private transactions, and then adjusting for size, growth and risk.

Common in growth-stage and mature SMEs. Be conservative: private company discounts, lower scale, and customer concentration often justify a lower multiple than large public peers.

3) Asset-Based Approach

You value the business based on its tangible and identifiable intangible assets net of liabilities. For asset-heavy businesses (e.g. property holding, manufacturing with significant equipment), this can be appropriate. For service or SaaS businesses, asset values understate the enterprise value, so you’d usually use income or market approaches instead.

4) Recent Transactions / Waterfall

Where there has been a recent arm’s-length investment or sale, that price can be a strong indicator - assuming no major changes since. For complex cap tables with multiple share classes and liquidation preferences, a “waterfall” analysis or option-pricing method allocates enterprise value among classes based on their rights.

What Affects The Value Of An Individual Share?

Once you have a company-level value, you consider features that change how much of that value a particular share parcel is worth:

• Control vs minority: A controlling stake may justify a premium. Minority stakes often suffer a discount for lack of control and liquidity.
• Share class rights: Preference shares with dividends, liquidation preferences, anti-dilution or enhanced voting rights can be worth more than ordinary shares - and sometimes vice versa depending on the scenario.
• Transfer restrictions and leaver provisions: Lock-ins, pre-emption, and bad leaver clauses can reduce marketability and value.
• Performance and concentration risk: Revenue growth, margins, churn, customer concentration, contract pipeline and IP protection all move the needle.
• Balance sheet strength: Cash runway, debt levels and working capital affect risk and therefore required returns.
• Stage and volatility: Early-stage companies typically carry higher risk and wider valuation ranges; later-stage businesses support tighter ranges.

Step-By-Step: How To Value Shares In Your Company

You can keep this process structured and transparent. Here’s a practical sequence most SMEs follow.

1) Define The Purpose And The Standard Of Value

Start by agreeing your objective and audience. Are you pricing an internal transfer, preparing for a round, or supporting an HMRC agreement for options? Your purpose affects whether you aim for a full market valuation, a tax-specific basis (e.g. AMV/UMV for EMI), or a price consistent with your Shareholders Agreement or Articles.

2) Gather The Right Information

Prepare a clean data pack so your valuation is grounded in facts:

• Last 24–36 months of management accounts and statutory accounts
• Forecast P&L, cash flow and key assumptions for 12–36 months
• Customer metrics: churn, LTV, pipeline, top 10 client exposure
• Key contracts (customers, suppliers), IP position and licences
• Cap table, share class rights and any recent transactions

This is also a great moment to check your company secretarial hygiene - for example, issuing and recording share certificates correctly and keeping your member register up to date.

3) Choose Appropriate Valuation Methods

Pick one or two methods that fit your model and stage, and cross-check with a third where possible:

• DCF if you have credible forecasts and stable unit economics
• Revenue or EBITDA multiples if you have comps and trailing performance
• Asset basis for property or asset-heavy structures
• Recent transaction price if still relevant; waterfall for multiple classes

Write down your rationale. If someone asks “why this multiple?” you should be able to point to comparables, growth rates and risk factors that justify your selection.

4) Normalise Earnings And Adjust For One-Offs

Scrub the numbers. Remove extraordinary items, adjust owner remuneration to a market rate, and reflect any recurring costs that weren’t previously captured (e.g. support roles, SaaS subscriptions moved from founder personal cards to the company). Consistency matters more than perfection - explain your adjustments.

5) Apply Control And Marketability Adjustments

Translate enterprise value into the value of the actual shares being transferred. That can mean discounts for lack of control or liquidity, or premiums for control stakes. Be careful not to double count (e.g. if your multiple already reflects private company discounts).

6) Document Your Valuation

Produce a short valuation note or report covering your purpose, methods, key assumptions, calculations and adjustments. Attach your data pack and board minutes approving the valuation methodology. Good documentation makes future audits, disputes or follow-on valuations much smoother.

7) Align With The Legal Paperwork

Once pricing is agreed, make sure the legal documents match the deal. For example:

• Use a Share Sale Agreement for a transfer between shareholders (including price, warranties, completion mechanics and restrictive covenants where appropriate).
• Use a Share Buyback Agreement and follow Companies Act procedures for a company buyback (including funding and filings).
• Ensure your Articles of Association and Shareholders Agreement support the transfer mechanism, pre-emption rights, leaver provisions and valuation formulae.

Legal And Compliance Essentials Under UK Law

Getting the number right is only half the job. Make sure your process and paperwork meet UK legal and tax requirements.

Companies Act 2006 - Procedures And Approvals

• Directors’ duties: Directors must act in the company’s best interests. A fair and documented valuation helps demonstrate you’ve set a proper price, especially where conflicts could arise (e.g. a director selling shares to the company).
• Share transfers: Check any restrictions in your Articles or shareholder terms. Pre-emption rights may require offering shares to existing holders first.
• Buybacks: Company buybacks have strict rules - the company must have distributable profits or follow the “permissible capital payment” route, use the correct contract, pass required resolutions, and file the right forms with Companies House. Missing steps can make a buyback invalid.

HMRC, Valuations And Tax Points

• Stamp duty on share transfers: Most off-market share transfers attract 0.5% stamp duty on consideration over £1,000. Factor this into the deal and timing; see our guide on stamp duty on shares.
• EMI and option valuations: If you’re issuing options, you’ll typically agree values with HMRC for “Unrestricted Market Value” and “Actual Market Value.” This helps evidence a defensible exercise price and employee tax treatment; our overview of UMV explains how this works in practice.
• Income vs capital treatment: Ensure transaction documents and pricing don’t inadvertently create employment income charges (e.g. under value transfers to employees) when you intended capital gains treatment.

Paperwork, Filings And Records

• Contracts and resolutions: Make sure board minutes, shareholder resolutions and the relevant agreements are executed correctly. If you’re unsure on execution formalities for companies and deeds, get advice to avoid invalid documents.
• Companies House filings: File any required forms after allotments, buybacks or changes to share capital. Keep PSC and cap table records current.
• Company registers: Update your register of members promptly and issue new share certificates to the right holders.

Build Valuation Into Your Governance

The easiest way to avoid disputes is to write your valuation rules down before you need them. Many owners include a simple, fair mechanism in their constitutional documents:

• A definition of “Fair Value” and when it applies (e.g. leaver events, pre-emption)
• The preferred method or a hierarchy of methods (e.g. average of independent valuations, or an agreed multiple of EBITDA)
• Who appoints an independent valuer and who pays
• Timelines and data access obligations

If your current documents are silent or unclear, consider updating your Articles of Association and your Shareholders Agreement.

Pricing, Funding And Cap Table Strategy

A fair valuation is also strategic. Pricing too high can make later rounds painful; pricing too low can cause unnecessary dilution or tax issues. If you’re planning option grants, align timing with an HMRC-accepted valuation for EMI options and set refresh points so you’re not stuck with outdated numbers.

When To Bring In A Valuer (And How Much To Spend)

For small internal transfers, a light-touch valuation memo may be sufficient. If you’re preparing for a sizeable buyback, a contentious exit, or a round with sophisticated investors, an independent valuation is a good investment. Not only does it support negotiations, it reduces the risk of a challenge later.

Practical Pitfalls To Avoid

• One method only: Cross-check your result with a second method or sanity check (e.g. revenue multiple and DCF) to avoid anchoring bias.
• Outdated data: Don’t rely on projections made six months ago if your pipeline has shifted. Update assumptions.
• Ignoring share rights: Price per share isn’t always “company value divided by total shares.” Rights matter. Model them.
• No documentation: If it isn’t written down, it didn’t happen. Keep a valuation note and board minutes on file.
• Skipping the legals: Even a fair price can turn into a headache if you don’t use the right agreements and follow the correct procedure for transfers or buybacks.

Key Takeaways

• Start by clarifying the purpose of your valuation and who needs to rely on it - pricing, tax or governance needs can change the approach.
• Use accepted methods (income, market, asset or recent transactions) and adjust for control, liquidity and share class rights to value the actual shares being transferred.
• Document your process and assumptions in a short valuation note, and align the outcome with the right legal paperwork such as a Share Sale Agreement or Share Buyback Agreement.
• Build valuation mechanisms into your governance - clear wording in your Shareholders Agreement and Articles of Association prevents disputes when someone exits.
• Don’t overlook compliance: consider HMRC impacts (including UMV/AMV for EMI options), Companies Act procedures, and 0.5% stamp duty on shares for transfers.
• If you need a deeper dive on approaches and examples, our overview on how to value company shares covers the nuts and bolts with UK-specific context.

If you’d like help valuing shares, updating your shareholder documents, or documenting a transfer or buyback, we’re here to help. You can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.