Heads of terms: what they are and what to include

What a heads of terms is

A heads of terms (also called heads of agreement) is a preliminary summary of the key terms of a proposed transaction, setting out what the parties intend to do and on what broad terms before they invest in detailed drafting and due diligence. The phrase is most common in the United Kingdom and other common law markets, and it appears frequently in cross-border deals. In the United States the same document is usually called a letter of intent (LOI) or, when the terms are listed as bullet points, a term sheet. Whatever the label, the purpose is the same: to confirm that both sides are aligned on the shape of the deal and to set the agenda for the negotiation that follows.

The defining feature of heads of terms is their mixed legal character. Under US contract law, most substantive terms are framed as statements of intent, which means neither side can be forced to close on those terms alone, while a small set of provisions is meant to bind immediately. Courts look at the words used and the parties’ conduct rather than the title of the document, so a summary that reads and behaves like a contract can be enforced as one. Being explicit about which sections bind and which do not is therefore the single most important drafting decision the document involves.

Key terms and clauses to include

Well-drafted heads of terms carry enough detail to steer the deal while leaving the parties free to walk away. The items below are the ones negotiators expect to see.

• Parties and transaction summary. Identify each party by legal name and describe, in plain language, the transaction contemplated (a share or asset purchase, a lease, a joint venture, a supply relationship).
• Structure, price, and consideration. State the proposed price or valuation and how it is paid, or the method and assumptions for fixing numbers that are not yet settled, including any earn-out or adjustment.
• Binding versus non-binding statement. Include an express clause identifying which sections are legally binding and which are only statements of intent. This clause prevents the most costly disputes.
• Confidentiality. Protect the sensitive financial, customer, and operational information exchanged during diligence, and intend this clause to bind from signature.
• Exclusivity or lock-out. Give the buyer or investor a defined period during which the other side agrees not to solicit or negotiate competing offers.
• Conditions. List the gating items, such as due diligence, financing, board or shareholder approval, and regulatory clearance, that must be met before a definitive agreement is signed.
• Timetable. Set target dates for diligence, drafting, and signing, plus a long-stop date after which either party may withdraw.
• Costs and break fee. State whether each party bears its own costs and whether any break fee applies if a party walks away.
• Governing law and dispute resolution. Choose the state law that governs the binding provisions and how disputes over them are resolved.
• Expiration. Set a date on which the heads of terms lapse if no definitive agreement has been signed, and describe how either party may terminate.

When you need one

You do not need heads of terms for every transaction, but they earn their place whenever a deal is complex, high value, or likely to run over a long negotiation. In mergers and acquisitions they signal serious intent and frame the diligence process. In commercial real estate they let landlord and tenant agree on rent, term, and fit-out before lawyers draft the lease. In joint ventures and partnerships they capture each side’s contribution and share of control before the detailed agreements are written.

Heads of terms are also useful when a party needs something concrete to move an internal process forward, such as securing board approval, arranging financing, or justifying the cost of due diligence to stakeholders. Putting price and structure in writing often exposes gaps in understanding that a handshake conceals, so heads of terms can surface deal-breakers early, before either side spends heavily on lawyers and advisers. For small, routine, or fully priced transactions, by contrast, moving straight to a definitive contract is usually faster and cleaner.

Common pitfalls

The most frequent and expensive mistake is ambiguity about whether the document binds the parties. Heads of terms that read like a contract, are signed, and are followed by performance can be enforced as a contract even when the parties assumed they were only preliminary, so the binding-versus-non-binding clause must be unmistakable.

A related trap is the “agreement to agree.” Language promising to negotiate the remaining terms later is often unenforceable, yet in some states it can still create a duty to negotiate in good faith and the liability that comes with it.

Other recurring problems include over-specifying terms, which can lock a party into a position before diligence is complete; omitting confidentiality or exclusivity, which leaves a party exposed while it invests in the deal; and forgetting to set an expiration date, which leaves stale heads of terms hanging over a transaction that has moved on. Signing without internal authority is another common error, because a document executed by someone without approval can create confusion about whether the company is committed. Finally, letting the heads of terms and the final contract drift out of alignment invites argument over which one reflects the real bargain.

From heads of terms to disciplined contract management

Heads of terms are only the first document in a chain that runs through the definitive agreement to renewals, amendments, and expiration. Treating them as a governed record rather than a loose email attachment keeps their binding obligations, such as confidentiality, exclusivity, and agreed deadlines, visible and enforceable. A contract lifecycle management platform such as Pactolane can hold the heads of terms in a central repository, route them through approval workflows so that only authorized signers commit the company, and capture eIDAS electronic signatures with a full audit trail. Renewal and deadline alerts keep exclusivity windows and diligence milestones from lapsing unnoticed, while PactAI can produce a multilingual executive summary, answer questions about the terms through conversational chat, and score the document’s risk from 0 to 100 so the human makes the final call with the full picture in view. Managed this way, heads of terms become the disciplined starting point of a deal rather than a loose end.