Unlimited liability clauses in commercial contracts: what they mean

An unlimited liability clause removes the agreed financial ceiling for some or all contractual claims. It can expose a business to losses far above the contract value, but “unlimited” does not automatically mean liability for every loss claimed: the other party must still establish a valid legal basis for recovery, subject to the contract and applicable law.

This article is general information, not legal advice. It uses commercial contracts governed by the law of England and Wales as its main legal context; different rules may apply elsewhere in the UK.

How liability caps and carve-outs work

A limitation-of-liability clause usually has several moving parts:

a financial cap, such as £100,000 or 100% of fees paid;
excluded types of loss, such as loss of profit or indirect loss;
carve-outs from the cap, which remain uncapped or have a higher “super-cap”;
indemnities, which may or may not sit inside the cap; and
procedural rules, such as claim-notification deadlines.

A contract can therefore advertise a clear headline cap while leaving its most likely claims outside it.

For example, a contract may cap ordinary claims at the fees paid in the previous 12 months but exclude confidentiality breaches, data-protection claims, intellectual-property indemnities, and “any breach of law” from that cap. The practical exposure may be much wider than the headline number suggests.

What “unlimited liability” does — and does not — mean

If a category of liability is uncapped, there is no agreed maximum amount for that category. It does not necessarily mean that:

every loss is recoverable;
the claimant can ignore causation, remoteness, mitigation, or proof of loss;
exclusions elsewhere in the contract have no effect;
an indemnity automatically covers every related cost; or
directors’ personal assets are exposed merely because the company signed the contract.

A director or owner may face personal exposure where they sign a personal guarantee or incur liability in their own right, but a company’s uncapped contractual liability is not by itself the same as personal liability.

Liability that the contract may not be able to exclude

Under the Unfair Contract Terms Act 1977, a party cannot exclude or restrict liability for death or personal injury resulting from negligence. Restrictions on liability for other negligence loss are subject to a reasonableness requirement.

Section 3 of the Act can also subject certain exclusions or restrictions in written standard business terms to a reasonableness test. Its application is technical and fact-dependent, so a clause should not be assumed valid or invalid from its wording alone.

Commercial contracts also commonly state that nothing excludes liability for fraud or fraudulent misrepresentation. The precise treatment of any attempted exclusion should be checked under the governing law rather than reduced to a generic list of “always unlimited” claims.

Common carve-outs that deserve close attention

The following categories often sit outside the general cap or under a separate higher cap:

intellectual-property infringement;
confidentiality breaches;
data-protection and cybersecurity incidents;
breach of restrictive covenants;
tax liabilities;
property damage or personal injury;
indemnity obligations;
deliberate default, wilful misconduct, or gross negligence; and
“any breach of law” or “any breach of this agreement”.

Some carve-outs may be commercially sensible where one party controls the risk. Problems arise when the wording is vague, exceptionally broad, or one-sided.

Also check defined terms. A carve-out for “Losses” may include legal fees, regulatory costs, settlements, internal investigation expenses, or amounts paid to third parties. A cap limited to “damages” may not clearly capture debts, service credits, refunds, or indemnity payments.

Six questions to ask about the cap

What is the number? Is the cap fixed, linked to fees, or linked to insurance?
What period of fees is used? Total contract fees, fees paid in the previous 12 months, or fees under the affected order only?
Is it aggregate or per claim? A “per event” cap can multiply if several events or claims arise.
Which claims sit outside it? Read every carve-out and cross-reference every indemnity.
Is the cap mutual? The same number may be inappropriate for both parties, but each side’s exposure should be visible and reasoned.
Does insurance actually respond? A policy limit is not proof that the policy covers the contractual promise. Check exclusions, deductibles, notification requirements, and contractual-liability wording.

Do not rely on “indirect or consequential loss” labels alone

Commercial parties often assume that an exclusion of “indirect or consequential loss” removes all remote, unusual, or financial loss. The legal meaning may be narrower than the everyday meaning, and separately listed losses such as lost profit, lost revenue, lost data, or wasted expenditure may be treated differently.

A useful review asks which real-world losses the business wants to recover or avoid — not only which legal labels appear in the clause.

What a more proportionate liability structure may look like

There is no universal “market” cap. A proportionate structure often includes:

an aggregate general cap tied to contract value or a negotiated fixed amount;
a higher cap for defined higher-risk categories;
a short list of genuinely necessary uncapped liabilities;
express treatment of indemnities, service credits, refunds, and data claims;
exclusions tailored to the losses each party could realistically suffer; and
alignment with available insurance and the party that controls the relevant risk.

The amount should reflect the possible harm, bargaining position, insurance, and value of the deal. A cap equal to annual fees may be reasonable for one low-risk service and inadequate for another that controls critical data, systems, or intellectual property.