UK EMI Share Option Valuations

1. Bottom line up front

An EMI valuation does two specific jobs. It sets the Actual Market Value of the option share so the strike price preserves the income-tax and NIC-free treatment at grant and exercise, and it sets the Unrestricted Market Value so the **£250,000 per-employee** and **£3 million company-wide** EMI limits can be tested at the date of grant. Both figures need to be defensible to HMRC's Shares and Assets Valuation team because the entire tax advantage of the scheme depends on them.

The single most valuable feature of the EMI regime is the ability to agree the valuation with HMRC in advance via form VAL231. An agreed valuation removes the largest tail risk from the scheme: that the strike price will later be challenged, the income tax treatment unwound, and the employees left with an unexpected tax bill on shares they have not yet sold. The agreement is valid for ninety days from the date of HMRC's letter, which is the operational window in which the board needs to make the grant.

This guide explains how AMV and UMV are built, what the VAL231 submission contains, how the ninety-day window is managed, and the practical blueprint we use with high-growth SMEs running rolling option programmes.

2. The strike-price-as-baseline analogy

Think of an EMI option like a long-dated property option agreement. A developer takes an option to buy a parcel of land at a strike price agreed today, exercisable at any point in the next ten years. The strike price is the baseline against which the upside is measured. If the land is worth £1m today and the option strike is set at £1m, every penny of future appreciation belongs to the option holder. If the strike is set at £800k because the land was undervalued, HMRC will treat the £200k discount as a tax benefit on the day the option is granted, not on the day it is exercised, and the tax treatment becomes punitive.

EMI options work on the same logic. Set the strike at AMV and every penny of subsequent growth flows to the employee through CGT at 14% under BADR (subject to the qualifying conditions). Set the strike below AMV and HMRC will assess income tax and NIC on the discount at the moment of grant or exercise, the tax-advantaged status collapses, and the scheme delivers a worse outcome than a straightforward bonus. The valuation is the baseline survey that establishes the strike at the right level on the right date, and the VAL231 agreement is the formal confirmation that the surveyor's report has been accepted by the authority.

3. AMV, UMV, and the VAL231 submission

Before laying out the eighteen-month rolling programme, here is the comparative framework that explains what AMV and UMV are, how they differ, and why both numbers matter on grant day.

AMV vs UMV in practice

The eighteen-month rolling EMI programme blueprint

• Month 0. Inaugural valuation prepared and VAL231 submitted. Cap table cleaned and articles reviewed for restriction wording.
• Months 1 to 3. HMRC agrees the valuation. First grant window opens. Initial cohort of options granted with grant notices filed within ninety-two days.
• Months 4 to 6. Quarterly compliance review. ERS annual return prepared for the prior tax year if applicable. Quarterly hire-cohort grant prepared on the existing agreed valuation if still in window.
• Month 6. Refresh valuation if material business change (funding round, large customer win or loss, EBITDA inflection).
• Months 7 to 12. Subsequent quarterly grants on refreshed agreed valuations. Leaver options dealt with on the agreed framework. Scheme rules reviewed for any technical drift.
• Months 13 to 18. Annual scheme review covering the £3m company limit, the £250k per-employee limit utilisation, and the qualifying trade tests. Refreshed valuation prepared for the next twelve-month cycle.

Anonymised UK case study

Drawing from our aggregate transaction data at BusinessValuation.co.uk, a London-headquartered B2B SaaS business with **£3.8m ARR** approached us six months after closing a Series A round at a **£24m post-money** valuation. The board wanted to grant EMI options to the senior engineering and commercial team but had no agreed strike. We prepared AMV at **£0.72 per share** and UMV at **£1.20 per share**, reflecting a 40% restriction discount for the leaver, drag, and vesting provisions in the articles. HMRC agreed both figures at first submission without query, six weeks from filing. The board granted **£1.6m of options across eleven employees** within the ninety-day window, well under the £250k individual cap and the £3m company cap. Eighteen months later the business secured a Series B at a **£62m post-money** valuation. The options remain qualifying, and on a future exit at that valuation the option-holders would realise gains taxable at 14% BADR rather than income tax at 45% plus NIC, a post-tax delta of around **£540k** across the cohort relative to a non-EMI alternative.

4. How the methodology shifts by stage of business

Not every EMI valuation is built the same way. The methodology is calibrated to where the business sits in its growth arc, because the evidence base available differs materially.

Established profitable SMEs. The earnings multiple is the primary method, supported by a DCF and an asset-base reconciliation. The peer-set multiple is selected from comparable private and public transactions, adjusted for size and growth. The AMV discount is built from the specific restriction wording in the articles and the shareholders' agreement, with reference to HMRC's published guidance and the case law on share restrictions.

Growth-stage businesses with recent funding rounds. The most recent priced funding round is the dominant evidence point, provided the round was at arm's length and within the last twelve months. The valuation builds the AMV by reference to the round price, applies the relevant restriction discount, and tests the result against an earnings or revenue multiple cross-check. Where the funding round was strategic rather than financial (corporate venture, customer-investor) we triangulate against an independent peer set.

Pre-revenue or pre-profit businesses. A scenario-weighted DCF is the standard approach, supplemented by a venture capital method analysis (target return, exit multiple, dilution). The valuation acknowledges the wide uncertainty range and presents the AMV at a defensible point within the range, with full disclosure of the assumptions. HMRC's SAV team accepts this methodology when it is clearly explained and supported by the founder's own forecast and the comparable transactions in the sector.

5. Common mistakes that put the tax treatment at risk

Granting without an agreed valuation. Self-assessed valuations are technically permitted but they leave the strike price exposed to challenge for the whole life of the option. The administrative cost of a VAL231 is modest relative to the tax risk it removes, and we recommend it on every initial scheme set-up.

Missing the ninety-day window. An agreed valuation expires ninety days from HMRC's letter. Granting on day ninety-one means the agreement is gone and the strike is once again self-assessed. Board calendars need to be aligned with the HMRC response date, not the original submission date.

Breaching the £250k individual limit. The £250k limit is tested against UMV at grant, cumulatively across all EMI options granted to the individual in the previous three years. Tracking this across multiple grants requires a register, and the register needs to be updated each grant cycle. Breaching the limit disqualifies the excess and the tax-advantaged treatment falls away on that tranche.

Failing the qualifying trade test. EMI is available only to qualifying trades carried on by the company or a 51%-owned trading subsidiary. Excluded activities include banking, insurance, property development, hotels, farming, and most professional services. A change in the trade mix can disqualify a previously qualifying scheme, and the test needs to be reviewed at each grant date.

Late ERS annual returns. Employer-related securities annual returns must be filed by 6 July following the tax year. Late filing attracts penalties and repeated late filing puts the qualifying status of the scheme at risk. The annual filing should be diarised at scheme set-up and assigned to a named owner.

6. Frequently asked questions