How to Negotiate Heads of Terms: A Practical Guide for UK Business Sellers

Heads of Terms is the most important document most sellers underestimate. Once you sign it and enter exclusivity, your negotiating leverage drops sharply — the buyer knows you are off the market, the clock is ticking, and momentum works in their favour. The deal you agree at HoTs stage is, in most respects, the deal you complete. That is why this is where you need to negotiate hardest.

Table of Contents

Why do Heads of Terms matter more than most sellers realise?

HoTs — sometimes called a Letter of Intent (LOI) or Term Sheet — sets out the headline commercial terms of a deal before the lawyers begin drafting the Share Purchase Agreement. Most of it is not legally binding. But that is precisely what makes it dangerous to rush through.

Because HoTs feels like a preliminary document, sellers sometimes treat it as a formality — a stepping stone to the "real" negotiations. That instinct is wrong. Once you sign HoTs and enter the exclusivity period, you have effectively committed yourself emotionally and practically to this buyer. Walking away becomes costly in time, money, and momentum. Buyers know this. The leverage you had during competitive bidding — multiple interested parties, genuine optionality — is largely gone.

The price, the payment structure, the earn-out mechanics, and the conditions under which the buyer can exit: all of these are agreed at HoTs stage. Revisiting them later is possible, but hard. Every change you want to make after exclusivity begins will feel like a renegotiation, and buyers will use that perception against you.

Where does your leverage actually sit?

At HoTs stage, you are at peak leverage. You may have run a competitive process, you have received at least one credible offer, and the buyer wants the deal. They have invested time but not yet the full legal and due diligence costs. If they walk away now, they lose relatively little. The same is true for you — which means both parties are negotiating from a position of genuine choice.

After exclusivity begins, that balance shifts. The buyer has committed weeks of management time, legal fees, and due diligence costs. But so have you. Walking away at that point is expensive and demoralising. Buyers understand this dynamic very well. Use your leverage before you sign it away.

Which HoTs terms are worth negotiating hard on?

Not all HoTs terms carry equal weight. These are the ones where the commercial stakes are highest.

Price and payment structure

The headline price matters, but the structure often matters more. A £6m deal paid entirely upfront is materially different from a £6m deal where £1.5m is deferred over two years and £1m is tied to an earn-out. Be specific in HoTs about:

  • The upfront cash consideration
  • Any deferred consideration — the amount, the timing, and whether it is conditional on anything
  • Any earn-out — the basis on which it is calculated (EBITDA? Revenue? Profit?), the measurement period, and who controls the levers that drive it

Earn-outs look attractive on paper. In practice, they transfer risk back to you post-sale. If the buyer subsequently runs the business differently — changes the cost base, shifts revenue recognition, or redirects sales resource — your earn-out can evaporate without any bad faith on their part. If you accept an earn-out, negotiate the mechanics carefully at HoTs stage, not later.

Exclusivity period length and conditions

Standard exclusivity requests range from 4 to 12 weeks. Buyers often ask for longer than they need. A 12-week exclusivity period is a long time to be off the market, particularly if due diligence reveals issues that stall the process.

Push for the shortest reasonable period — typically 6–8 weeks for a straightforward deal. Agree clear conditions under which exclusivity lapses: for example, if the buyer fails to complete due diligence by a specified date, or if they attempt to renegotiate price without new material evidence.

No-shop provisions

No-shop clauses prevent you from approaching other buyers during exclusivity. These are reasonable and expected. But check whether the clause covers only you approaching others, or also prohibits you from responding to inbound interest. Narrow it where you can.

Conditions to completion (conditionality)

Buyers will sometimes include broad conditionality — essentially, a list of reasons they can walk away without penalty. Common ones include satisfactory completion of due diligence, no material adverse change (MAC) in the business, key employee retention, and regulatory clearances.

Negotiate MAC clauses tightly. A MAC clause that reads "any material adverse change in the business, financial condition, or prospects of the company" gives the buyer enormous discretion. Push for specific, defined thresholds — for example, a drop in EBITDA of more than 15% — rather than open-ended language.

Key employee arrangements

If the buyer intends to retain key managers, settle the broad outline of those arrangements at HoTs stage — retention bonuses, new contracts, equity participation if applicable. Leaving this entirely to the SPA phase creates uncertainty for your management team and potential complications with TUPE obligations where relevant.

What gets left to the SPA?

The Share Purchase Agreement covers the legal architecture of the deal: warranties, indemnities, limitations on liability, completion mechanics, and the precise drafting of conditions. This is where solicitors earn their fees. At HoTs stage, you do not need to resolve every legal detail — and attempting to do so will slow down an already delicate process.

What you do need is for the commercial terms to be clear enough that there is no room for material reinterpretation by the time the SPA lands. Vague HoTs produce contentious SPA negotiations.

TermAgreed at HoTsAgreed at SPA
Headline price✓—
Earn-out mechanics (broad)✓Detailed drafting
Exclusivity period✓—
Completion conditions (broad)✓Detailed drafting
Warranty scope—✓
Indemnities—✓
Liability caps and baskets—✓
Completion accounts mechanismOutlineDetailed drafting
W&I insurance requirementsNote if required✓

What mistakes do sellers commonly make at HoTs stage?

These are the errors that cost sellers money and cause deals to collapse or complete on worse terms than expected.

Accepting an over-long exclusivity period. Twelve weeks is rarely necessary. If due diligence runs into problems, you want the ability to re-engage with other buyers without having to wait for exclusivity to formally lapse.

Leaving earn-out mechanics vague. Agreeing an earn-out "based on future EBITDA performance" without defining the EBITDA calculation, the measurement period, and the accounting policies to be applied is an invitation for a dispute.

Not addressing what happens if the buyer cuts headcount or costs post-completion. If your earn-out is EBITDA-based, a buyer who cuts your sales team or marketing budget can directly reduce the number you are paid against. Protect against this with specific operating covenants during the earn-out period.

Accepting broad MAC clauses. As above — wide-open MAC language gives a motivated buyer enormous flexibility to renegotiate price during due diligence.

Treating HoTs as non-binding and therefore unimportant. The moral and commercial weight of what you agree at HoTs stage is significant, even if most terms are not legally enforceable. Departing from HoTs terms during SPA negotiation will create friction and erode trust.

A practical HoTs negotiation checklist

Before you sign Heads of Terms, work through this list:

  1. Price — Is the headline figure clearly stated, and on what basis (equity value, enterprise value, cash-free debt-free)?
  2. Upfront cash — What percentage is paid on completion?
  3. Deferred consideration — Is it unconditional, or does it depend on future performance or events?
  4. Earn-out — If included, are the metrics, measurement period, and accounting basis clearly defined?
  5. Exclusivity period — Is the duration the shortest that is practically workable? Are there lapse conditions?
  6. No-shop clause — Is it limited to you approaching others, or does it block inbound interest too?
  7. MAC clause — Is it defined with specific, measurable thresholds rather than open-ended language?
  8. Conditions to completion — Are they listed and specific?
  9. Key employees — Are retention arrangements outlined at a headline level?
  10. Costs — Who bears deal costs if the transaction falls through? Is there a break fee?

If you want to understand the broader context before entering negotiations, the guides on Heads of Terms Explained for UK Business Sellers and What is a Share Purchase Agreement? are worth reading alongside this one. Between the three, you will have a clear picture of the full deal process from first offer to legal completion.

FAQ

Are Heads of Terms legally binding in the UK? Most HoTs are not legally binding in their commercial terms — price, structure, and conditions are typically stated as "subject to contract". However, certain clauses — most commonly exclusivity, confidentiality, and costs provisions — are usually expressed as legally binding. Make sure you know which clauses are binding before you sign.

How long should an exclusivity period be? For most UK mid-market deals, 6–8 weeks is sufficient for a buyer to complete due diligence on a well-prepared business. Buyers may ask for longer. Unless there is a genuine complexity reason — regulatory approval, multiple jurisdictions — push back on anything beyond 8 weeks.

Can I negotiate HoTs without a corporate finance adviser? You can, but it significantly increases the risk of leaving money on the table or agreeing terms you later regret. An experienced corporate finance adviser will have seen dozens of HoTs and will know where buyers typically push hard and where there is room to move. The fee is generally well justified at this stage.

What happens if the buyer tries to renegotiate price after HoTs? Buyers occasionally attempt to reduce price during due diligence — a practice sometimes called "chipping". If new material information emerges that genuinely changes the picture, some adjustment may be warranted. If it does not, you are within your rights to hold to the agreed terms or walk away. A well-drafted MAC clause that defines materiality with specific thresholds makes this easier to manage.

Should earn-outs be avoided? Not necessarily, but they should be accepted with clear eyes. Earn-outs are common in professional services, recruitment, and businesses where the seller's relationships are central to future revenue. If you accept one, the mechanics must be tightly defined — including how EBITDA is calculated, what operating decisions the buyer can make during the earn-out period, and what happens in the event of a dispute.

What is the difference between Heads of Terms and a Letter of Intent? In UK M&A practice, these terms are largely interchangeable. A Letter of Intent (LOI) is more common in US deals; Heads of Terms (HoTs) or a Term Sheet are the standard UK equivalents. The structure and purpose are the same: a non-binding document recording the agreed commercial terms before the SPA is drafted.

This article contains general information only and does not constitute financial or tax advice. Every business sale is different. Speak to a qualified UK tax adviser about your specific situation before making any decisions.

Thinking about what your business might be worth before you enter any negotiation? Use the free valuation calculator on Succession Group to get an indicative range based on your sector, revenue, and EBITDA — before you sit down at the table.