Heads of Terms in Business Deals: Why a Document That Isn't Binding Still Matters Hugely

When you're buying or selling a business, the temptation early on is to dive straight into the formal sale agreement and worry about the detail later. That instinct usually costs people time and money. Heads of terms exist precisely to slow things down at the right moment, force a proper conversation between buyer and seller, and get the big commercial points pinned down before anyone reaches for a lawyer's drafting pen.

They aren't legally required, and most of what they contain won't be binding. But anyone who's worked through a deal that fell apart at the eleventh hour will tell you the same thing: the cost of skipping this step is almost always higher than the cost of doing it properly.

What Heads of Terms Actually Do

At their core, heads of terms (sometimes called a letter of intent, term sheet, or memorandum of understanding) are a written summary of what the buyer and seller have agreed in principle. They aren't the deal itself. They're the framework the deal will be built on.

The real value sits in the conversation they force. Drafting a set of heads pushes both sides to confront the commercial issues that matter early, while there's still goodwill and momentum on both sides. That's much easier than discovering, three months and a small fortune in fees later, that you and the other side had completely different assumptions about the structure or price.

Done well, heads of terms cut the risk of negotiations dragging on, reduce the chance of late-stage breakdowns, and give everyone a clearer sense of whether the deal is worth pursuing in the first place.

What's Usually Inside

The exact contents vary deal by deal, but most heads of terms will cover some combination of the following:

• The main commercial terms. Price, structure, what's actually being bought or sold, and any conditions attached.
• A deal timetable. Target dates for due diligence, exchange, and completion, so everyone is working to the same clock.
• Conduct during negotiations. What each party is and isn't allowed to do while talks are ongoing.
• Confidentiality. How shared business information will be protected, particularly the sensitive financial and commercial data that gets exchanged during due diligence.
• Exclusivity. Whether the seller is locked out of negotiating with other potential buyers for a defined period.
• Costs. Who pays for what, and what happens if the deal collapses.

It's the breadth of that list that makes heads of terms so useful. Even if most of it isn't binding, getting these points down in writing is a much firmer footing than relying on conversations and good intentions.

Binding or Not? Get the Distinction Right

Here's where heads of terms catch people out. Most of the contents won't be legally binding, with the assumption being that the formal sale agreement will supersede them. But certain provisions usually are binding, and confidentiality and exclusivity are the two most common.

That mix matters. If you sign heads of terms thinking nothing in them is enforceable, you can find yourself on the wrong end of a breach claim for sharing information you assumed was loosely covered, or for talking to a rival buyer during what turned out to be a binding exclusivity period.

A well-drafted heads document spells out, in plain language, which clauses bite and which don't. Anything less than that is a problem waiting to happen.

The Commercial Reality of "Non-Binding"

There's another wrinkle worth flagging. Even where heads of terms aren't legally binding, they often carry real commercial weight. Once you've agreed something in writing with the other side, walking it back later is harder than it looks.

The other party will, reasonably, ask why something that was settled is now back on the table. Trust gets dented. Momentum gets lost. In some cases the deal doesn't survive the conversation. So while the legal answer might be "you're free to renegotiate", the practical answer is often "you can, but it'll cost you".

That cuts both ways. It means you should treat the drafting of heads of terms seriously, because what you write down today will shape what you can realistically achieve at the formal agreement stage. It also means you shouldn't let yourself be hurried into committing to terms you haven't properly thought through.

When to Get a Lawyer Involved

Unless you've been through several deals before, getting the draft heads checked by a lawyer is almost always worth the modest cost. The aim isn't to bog things down with detail. It's to make sure that what's written down genuinely reflects what you intended, that the binding and non-binding sections are properly distinguished, and that you haven't unknowingly agreed something that will hurt you when the full sale agreement is drafted.

A good corporate lawyer will also spot the gaps. Things that haven't been addressed but should have been, or assumptions one side is making that the other side hasn't shared. Those are the issues that cause deals to stall later, and surfacing them at the heads stage is far easier than fixing them at completion.

Where Specialist Advice Pays for Itself

The challenge with corporate deals isn't usually any one document. It's the way that early decisions shape every step that follows, often in ways that aren't obvious at the time. Get the heads of terms right, and the rest of the deal tends to run more smoothly. Get them wrong, and you spend the next several months unpicking issues that should have been resolved on day one.

Corporate transactions sit at the meeting point of legal, commercial, and tax considerations, which is why most buyers and sellers benefit from working with a firm that handles deals like these regularly rather than as a side specialism. A firm like Darwin Gray, for example, advises buyers and sellers on drafting and negotiating heads of terms, running the deal process, and getting the full sale agreement over the line. Bringing that input in at the heads stage, rather than later, is one of the simplest ways to keep a deal on track.

‍