How HMRC Values Shares in a Private UK Company

A private company share is not a listed share with a live market ticker. For HMRC, the question is both simple and awkward: What would a real buyer pay for these exact shares, on this specific date, with these precise rights?

If you are dealing with an EMI valuation, tax reporting, a share transfer, inheritance tax, or a shareholder dispute, a rough guess will not do. You need a valuation that matches the purpose, the paperwork, and the commercial reality.

That starts with one point many founders miss: HMRC is not always asking the same question.

Need an HMRC-compliant share valuation? Book a free Strategy Call with Consult EFC to speak directly with an ICAEW-regulated Corporate Finance Adviser.

Start with why HMRC needs the valuation

The right value depends on the reason the valuation exists. The exact same company, cap table, and month can produce different values depending on the tax purpose.

HMRC is not valuing your pitch-deck equity story. It is valuing the actual shares, on the actual facts, at the valuation date.

Here is the quickest way to frame it:

Situation	What HMRC Usually Wants	What Matters Most
EMI or CSOP Options	A supportable market value before grant.	Share rights, restrictions, recent trading, forecasts.
Tax Reporting / Gifts	Open market value for the transferred shares.	Real market conditions, minority status, transfer limits.
Disputes / Reorganisations	A fair value for a defined event.	Control, class rights, recent deals, who is buying.

The table looks tidy. Real life rarely is. That’s why the purpose must come first.

EMI, CSOP and share scheme valuations

For EMI and other employee share schemes, companies must agree the value with HMRC before options are granted. This secures the tax treatment for both the company and the employee.

You will usually hear two terms:

• Unrestricted Market Value (UMV): The value without special restrictions.
• Actual Market Value (AMV): The value after restrictions are taken into account.

Note: From 6 April 2026, EMI limits widened (the gross assets cap rose to £120 million and the employee limit rose to 500 FTE), but the need for a defensible, formal valuation has not changed. Read our full guide on HMRC EMI Share Valuations in 2026.

Tax, inheritance tax and share transfers

Shares also need valuing for capital gains tax, inheritance tax, gifts and transfers between shareholders. Here, HMRC will look hard at whether the valuation reflects what a willing buyer would pay in the real market, not what the parties would like it to be.

Restrictions can matter a lot. So can dividend rights, minority status and whether the shares can be sold without board approval. A transfer between family members or connected parties still needs an open market lens.

Disputes, reorganisations and investor events

Buybacks, demergers, shareholder fallouts and new investment rounds can all trigger a valuation question. The same shares may not carry the same value in each case.

Why? Because price changes with context. A buyer getting control may pay more. A small holding with no say over dividends may be worth less. A preference share with liquidation rights may sit in a different place again.

Gather the company facts before you value anything

A valuation is only as good as the facts behind it. If the inputs are weak, the output is weak, even if the maths looks polished.

HMRC will usually want recent accounts, management numbers, forecasts, debt details, cash balances and any evidence of recent transactions. It will also want the legal documents that define what the shares can, and cannot, do.

Review the articles and shareholders’ agreement

Start with the articles of association and any shareholders’ agreement. These documents often tell you more about value than the headline profit number.

Look for voting rights, dividend rights, transfer restrictions, drag and tag clauses, pre-emption rights and liquidation preferences. Two share classes in the same company can have very different economics. Even two holdings of the same class can feel different if one gives control and the other does not.

Use clean, recent financial information

Out-of-date numbers create false confidence. Use the latest statutory accounts, current management information and a forecast that management can explain without hand-waving.

Normalise the figures before you value anything. Remove one-off costs, founder personal expenses, unusual bonuses, non-trading items and transactions that won’t repeat. If the business had a freak month, say so. If margins moved because a major contract was delayed, say that too. HMRC would rather see a clear adjustment than a neat fiction.

Check for company-specific issues that change value

Some factors push value up. Others drag it down. Both matter.

Customer concentration, key-person dependence, related-party balances, unpaid taxes, legal claims and reliance on a future fundraising round can all change the answer. So can a single contract renewal, a disputed debt or a weak finance function. For growing businesses, this is where a lot of the real judgement sits.

Choose a valuation method that fits the business

There is no single HMRC formula for private company shares. The method should fit the business, not the other way round.

A good valuer will usually test more than one approach and compare the answers. If you want the wider picture, this business valuation methods guide gives useful context on how UK businesses are commonly assessed.

Net asset value for asset-heavy companies

Net asset value works best when the balance sheet is doing most of the heavy lifting. Think holding companies, property-rich businesses, investment vehicles or companies with weak trading profits but meaningful assets.

The logic is plain enough, assets less liabilities. The hard part is using realistic asset values. Book value may understate property, overstate stock or ignore contingent liabilities. For HMRC purposes, the balance sheet often needs cleaning up before it tells the truth.

Earnings or profit-based methods for trading businesses

For trading companies, value often sits in future maintainable earnings. That usually means normalised profit, EBITDA or another earnings measure, then applying a market multiple.

The multiple is where judgement comes in. Growth, customer quality, margin strength, sector risk, contract visibility and management depth all move it. A stable engineering business and a fast-growing SaaS company should not be treated as twins. For some early-stage SaaS businesses, revenue may be used as a cross-check where profits lag growth.

Market comparisons and cross-checks

Comparisons help test whether the answer feels grounded. Recent transactions, sector multiples, funding rounds and industry benchmarks can all be useful.

They are not perfect matches. Private businesses vary too much for that. Different deal sizes, different control positions, different growth profiles and different share rights can skew the picture. Use comparisons as a sense check, not a shortcut.

Explore Further: For a deeper look at how these approaches work in practice, read our comprehensive Business Valuation Methods Guide.

Turn company value into the value of the actual shares

This is where many valuations go wrong. People value the company, divide by the number of shares and stop there.

HMRC usually won’t stop there. It wants the value of the specific shares being considered, after taking account of rights, restrictions and how easy they are to sell.

Minority discounts and lack of marketability

A small stake is often worth less per share than a controlling stake. That is not unfair, it is how buyers think.

A minority holder may have little control over dividends, pay, timing of a sale or strategic decisions. Then add the obvious problem, private company shares are hard to sell. There is no public market, no daily price and often no ready buyer. That is why a discount for lack of marketability is common.

Control rights, voting power and dividend rights

Control can add value. A majority stake can influence the board, steer dividends and shape an exit. Shares with stronger voting rights may deserve a higher price than shares with weaker rights.

Dividend rights matter too. Preferred shares, alphabet shares and non-voting shares may need a separate approach. A holding that looks large on paper can still be economically weak if it cannot direct cash or influence a sale.

Restrictions that change the real-world price

Legal restrictions can reduce what a buyer would pay. Lock-ins, pre-emption rights, compulsory transfer terms and bad leaver clauses all affect the real-world price.

This is why spreadsheet maths is not enough. If a shareholder must offer shares back at a formula price, or cannot transfer them without approval, the market for those shares is narrower. HMRC will want that reflected, but only where the restriction has real bite.

Build a valuation HMRC can follow, and challenge less

A credible valuation is clear, consistent and easy to trace. HMRC does not need theatre. It needs to see how you got from the facts to the number.

That means setting out the assumptions, keeping the working papers and linking every key judgement to evidence. It also helps to remember that agreed HMRC share valuations are usually time-limited, often 90 days, unless something material changes first.

Show your assumptions and normalisation adjustments

Write down the main assumptions. Growth rates, margins, discount rates, debt treatment, maintainable earnings and any weighting between methods should all be visible.

Do the same for normalisation adjustments. If you add back a founder’s personal car, explain it. If you strip out an unusual legal cost, explain that too. Hidden assumptions are where weak valuations fall apart.

Keep the evidence behind the numbers

If HMRC asks questions later, the file should answer most of them. Keep the support pack together from day one.

That usually includes:

• recent statutory accounts and management accounts
• forecasts and the basis behind them
• the cap table and details of each share class
• articles, shareholders’ agreements and option documents
• board papers, funding documents and any recent share transactions

Good records save time. They also show that the valuation was built from evidence, not memory.

Know when a specialist report is the right move

Sometimes a board-level estimate is enough for planning. Sometimes it isn’t.

If you need advance agreement for EMI, you’re dealing with an investor event, or the valuation may be contested, get proper advice. A formal HMRC-compliant business appraisal can cost far less than a long argument with HMRC, investors or other shareholders. Talk to an ICAEW-regulated Corporate Finance Adviser today.

Conclusion

The hard part is not picking a clever formula. It is matching the valuation to the purpose, the company facts, the share rights and the market reality.

That is why HMRC often disagrees with simple equity maths. A strong valuation is supportable, date-specific and built on evidence. For founders and business owners, it should sit inside wider finance and tax planning, not arrive as an afterthought when a deadline lands.